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H3C 园区盒式交换机典型配置举例-6W105

目录

    53-Smart Link典型配置举例

    本章节下载：53-Smart Link典型配置举例(525.05 KB)

    53-Smart Link典型配置举例

    目录

    1 简介

    2 配置前提

    3 使用限制

    4 Smart Link组负载分担配置举例

    4.1 组网需求

    4.2 配置思路

    4.3 适用产品及版本

    4.4 配置注意事项

    4.5 配置步骤

    4.5.1 Device A的配置

    4.5.2 Device B的配置

    4.5.3 Device C的配置

    4.5.4 Device D的配置

    4.6 验证配置

    4.7 配置文件

    5 Smart Link与Monitor Link联动配置举例

    5.1 组网需求

    5.2 配置思路

    5.3 适用产品及版本

    5.4 配置注意事项

    5.5 配置步骤

    5.5.1 Device A的配置

    5.5.2 Device B的配置

    5.5.3 Device C的配置

    5.5.4 Device D的配置

    5.5.5 Device E的配置

    5.6 验证配置

    5.7 配置文件

    6 在IRF中应用Smart Link典型配置举例

    6.1 组网需求

    6.2 配置思路

    6.3 适用产品及版本

    6.4 配置注意事项

    6.5 配置步骤

    6.5.1 搭建IRF

    6.5.2 配置Smart Link

    6.6 验证配置

    6.7 配置文件

    1 简介

    本文档介绍了Smart Link配置举例。

    2 配置前提

    本文档不严格与具体软、硬件版本对应，如果使用过程中与产品实际情况有差异，请参考相关产品手册，或以设备实际情况为准。

    本文档中的配置均是在实验室环境下进行的配置和验证，配置前设备的所有参数均采用出厂时的缺省配置。如果您已经对设备进行了配置，为了保证配置效果，请确认现有配置和以下举例中的配置不冲突。

    本文档假设您已了解Smart Link、Monitor Link和IRF特性。

    3 使用限制

    请勿将一个端口同时加入聚合组和Smart Link组，否则该端口在Smart Link组中将不会生效，也无法使用display smart-link group命令查看到。

    4 Smart Link组负载分担配置举例

    4.1 组网需求

    如图1所示，某企业财务部和市场部分别使用VLAN 10和VLAN 11，出于可靠性考虑，接入设备Device A提供两条链路双上行到汇聚设备Device D。现要求如下：

    ·通过配置Smart Link来实现链路备份和负载分担。财务部优先使用Device A—>Device B路径转发数据流量，市场部优先使用Device A—>Device C路径转发数据流量。

    ·当Device A到Device B、Device C的两条上行链路都正常时，财务部和市场部的数据流量分别通过不同路径转发；当其中一条链路出现故障时，Smart Link功能会将故障链路上的流量快速切换到另一条链路上；当链路故障恢复时，Smart Link功能又会将数据流量及时切换回原来的转发路径。

    图1 Smart Link组配置组网图

    设备

    接口

    VLAN

    设备

    接口

    VLAN

    Device A

    GE1/0/1

    10、11

    Device C

    GE1/0/1

    10、11

    GE1/0/2

    10、11

    GE1/0/2

    10、11

    GE1/0/3

    10

    Device D

    GE1/0/1

    10、11

    GE1/0/4

    11

    GE1/0/2

    10、11

    Device B

    GE1/0/1

    10、11

    GE1/0/3

    10、11

    GE1/0/2

    10、11

    4.2 配置思路

    为了实现流量在两条上行链路上的负载分担，需在Device A创建两个Smart Link组，不同Smart Link组包含相同的成员端口，但同一端口在不同Smart Link组内角色不同，且财务部和市场部使用的VLAN分别为这两个Smart Link组的保护VLAN。

    为了实现链路故障恢复时，财务部和市场部的数据流量仍能切换回各自原来的路径转发，需要为两个Smart Link组都配置角色抢占模式。

    为了避免当Smart Link组中的主从链路切换时，由于上游设备上的MAC地址转发表项和ARP/ND表项没有及时更新，而导致下行数据流量发生中断，需要在Device A上配置发送Flush报文功能，处于从Device A到Device D主、从链路上的端口都需要使能接收Flush报文功能。

    4.3 适用产品及版本

    表1 适用产品及版本

    产品

    软件版本

    S6812系列

    S6813系列

    Release 6615Pxx系列、Release 6628Pxx系列

    S6550XE-HI系列

    Release 6008及以上版本、Release 8106Pxx

    S6525XE-HI系列

    Release 6008及以上版本、Release 8106Pxx

    S5850系列

    Release 8005及以上版本、Release 8106Pxx

    S5570S-EI系列

    Release 11xx

    S5560X-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系、Release 6628Pxx系列列

    S5560X-HI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5500V2-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-30F

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-30C

    MS4520V2-54C

    Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-28S

    MS4520V2-24TP

    Release 63xx系列

    S6520X-HI系列

    S6520X-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S6520X-SI系列

    S6520-SI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5000-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4600系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    ES5500系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5560S-EI系列

    S5560S-SI系列

    Release 63xx系列

    S5500V3-24P-SI

    S5500V3-48P-SI

    Release 63xx系列

    S5500V3-SI系列（除S5500V3-24P-SI、S5500V3-48P-SI）

    Release 11xx

    S5170-EI系列

    Release 11xx

    S5130S-HI系列

    S5130S-EI系列

    S5130S-SI系列

    S5130S-LI系列

    Release 63xx系列

    S5120V2-SI系列

    S5120V2-LI系列

    Release 63xx系列

    S5120V3-EI系列

    Release 11xx

    S5120V3-36F-SI

    S5120V3-28P-HPWR-SI

    S5120V3-54P-PWR-SI

    Release 11xx

    S5120V3-SI系列（除S5120V3-36F-SI、S5120V3-28P-HPWR-SI、S5120V3-54P-PWR-SI）

    Release 63xx系列

    S5120V3-LI系列

    Release 63xx系列

    S3600V3-EI系列

    Release 11xx

    S3600V3-SI系列

    Release 11xx

    S3100V3-EI系列

    S3100V3-SI系列

    Release 63xx系列

    S5110V2系列

    Release 63xx系列

    S5110V2-SI系列

    不支持

    S5000V3-EI系列

    S5000V5-EI系列

    不支持

    S5000E-X系列

    S5000X-EI系列

    不支持

    E128C

    E152C

    E500C系列

    E500D系列

    Release 63xx系列

    MS4320V2系列

    MS4320V3系列

    MS4300V2系列

    MS4320系列

    MS4200系列

    Release 63xx系列

    WS5850-WiNet系列

    Release 63xx系列

    WS5820-WiNet系列

    WS5810-WiNet系列

    Release 63xx系列

    WAS6000系列

    不支持

    IE4300-12P-AC & IE4300-12P-PWR

    IE4300-M系列

    IE4320系列

    Release 63xx系列

    IE4520系列

    Release 66xx系列

    S5135S-EI系列

    Release 6810及以上版本

    4.4 配置注意事项

    ·如果欲配置某端口为Smart Link组的成员端口（主端口或从端口），请先手工关闭该端口，并待Smart Link组配置完成后再开启该端口，以避免形成环路，导致广播风暴。

    ·在配置Smart Link组的成员端口及其直连端口之前，请确认端口未启用STP或者RRPP功能。

    ·上游设备上配置的接收处理Flush报文的控制VLAN和在Smart Link设备上配置的发送控制VLAN需要相同。

    ·不同的Smart Link组需要配置不同的控制VLAN。Smart Link组的控制VLAN应同时为该Smart Link组的保护VLAN，且不要将已配置为控制VLAN的VLAN删除，否则会影响Flush报文的发送。

    4.5 配置步骤

    4.5.1 Device A的配置

    # 关闭端口GigabitEthernet1/0/1和GigabitEthernet1/0/2，并配置端口为Trunk端口，允许VLAN 10、VLAN 11流量通过，并关闭STP。

    system-view

    [DeviceA] vlan 10 to 11

    [DeviceA] interface gigabitethernet 1/0/1

    [DeviceA-GigabitEthernet1/0/1] shutdown

    [DeviceA-GigabitEthernet1/0/1] port link-type trunk

    [DeviceA-GigabitEthernet1/0/1] port trunk permit vlan 10 11

    [DeviceA-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceA-GigabitEthernet1/0/1] undo stp enable

    [DeviceA-GigabitEthernet1/0/1] quit

    [DeviceA] interface gigabitethernet 1/0/2

    [DeviceA-GigabitEthernet1/0/2] shutdown

    [DeviceA-GigabitEthernet1/0/2] port link-type trunk

    [DeviceA-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceA-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceA-GigabitEthernet1/0/2] undo stp enable

    [DeviceA-GigabitEthernet1/0/2] quit

    # 配置端口GigabitEthernet1/0/3、GigabitEthernet1/0/4为Access端口，分别允许VLAN 10和VLAN 11流量通过。

    [DeviceA] interface gigabitethernet 1/0/3

    [DeviceA-GigabitEthernet1/0/3] port access vlan 10

    [DeviceA-GigabitEthernet1/0/3] quit

    [DeviceA] interface gigabitethernet 1/0/4

    [DeviceA-GigabitEthernet1/0/4] port access vlan 11

    [DeviceA-GigabitEthernet1/0/4] quit

    # 将VLAN 10映射到MSTI 1、VLAN 11映射到MSTI 2上，并激活MST域的配置。

    [DeviceA] stp region-configuration

    [DeviceA-mst-region] instance 1 vlan 10

    [DeviceA-mst-region] instance 2 vlan 11

    [DeviceA-mst-region] active region-configuration

    [DeviceA-mst-region] quit

    # 创建Smart Link组1，并配置其保护VLAN为MSTI 1所映射的VLAN。

    [DeviceA] smart-link group 1

    [DeviceA-smlk-group1] protected-vlan reference-instance 1

    # 配置端口GigabitEthernet1/0/1为主端口，GigabitEthernet1/0/2为从端口。

    [DeviceA-smlk-group1] port gigabitethernet 1/0/1 primary

    [DeviceA-smlk-group1] port gigabitethernet 1/0/2 secondary

    # 使能发送Flush报文。

    [DeviceA-smlk-group1] flush enable control-vlan 10

    # 配置抢占模式，配置延时抢占时间为10秒。

    [DeviceA-smlk-group1] preemption mode role

    [DeviceA-smlk-group1] preemption delay 10

    [DeviceA-smlk-group1] quit

    # 创建Smart Link组2，并配置其保护VLAN为MSTI 2所映射的VLAN。

    [DeviceA] smart-link group 2

    [DeviceA-smlk-group2] protected-vlan reference-instance 2

    # 配置端口GigabitEthernet1/0/2为主端口，GigabitEthernet1/0/1为从端口。

    [DeviceA-smlk-group2] port gigabitethernet 1/0/2 primary

    [DeviceA-smlk-group2] port gigabitethernet 1/0/1 secondary

    # 使能发送Flush报文。

    [DeviceA-smlk-group2] flush enable control-vlan 11

    # 配置抢占模式，配置默认的延时抢占时间为10秒。

    [DeviceA-smlk-group2] preemption mode role

    [DeviceA-smlk-group2] preemption delay 10

    [DeviceA-smlk-group2] quit

    # 开启端口GigabitEthernet1/0/1和GigabitEthernet1/0/2。

    [DeviceA] interface gigabitethernet 1/0/1

    [DeviceA-GigabitEthernet1/0/1] undo shutdown

    [DeviceA-GigabitEthernet1/0/1] quit

    [DeviceA] interface gigabitethernet 1/0/2

    [DeviceA-GigabitEthernet1/0/2] undo shutdown

    [DeviceA-GigabitEthernet1/0/2] quit

    4.5.2 Device B的配置

    # 配置端口GigabitEthernet1/0/1为Trunk端口，允许VLAN 10、VLAN 11流量通过，在该端口上关闭STP并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    system-view

    [DeviceB] vlan 10 to 11

    [DeviceB] interface gigabitethernet 1/0/1

    [DeviceB-GigabitEthernet1/0/1] port link-type trunk

    [DeviceB-GigabitEthernet1/0/1] port trunk permit vlan 10 11

    [DeviceB-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceB-GigabitEthernet1/0/1] undo stp enable

    [DeviceB-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11

    [DeviceB-GigabitEthernet1/0/1] quit

    # 配置端口GigabitEthernet1/0/2为Trunk端口，允许VLAN 10、VLAN 11流量通过，使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    [DeviceB] interface gigabitethernet 1/0/2

    [DeviceB-GigabitEthernet1/0/2] port link-type trunk

    [DeviceB-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceB-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceB-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11

    [DeviceB-GigabitEthernet1/0/2] quit

    4.5.3 Device C的配置

    # 配置端口GigabitEthernet1/0/1为Trunk端口，允许VLAN 10、VLAN 11流量通过，在该端口上关闭STP并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    system-view

    [DeviceC] vlan 10 to 11

    [DeviceC] interface gigabitethernet 1/0/1

    [DeviceC-GigabitEthernet1/0/1] port link-type trunk

    [DeviceC-GigabitEthernet1/0/1] port trunk permit vlan 10 11

    [DeviceC-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceC-GigabitEthernet1/0/1] undo stp enable

    [DeviceC-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11

    [DeviceC-GigabitEthernet1/0/1] quit

    # 配置端口GigabitEthernet1/0/2为Trunk端口，允许VLAN 10、VLAN 11流量通过，使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    [DeviceC] interface gigabitethernet 1/0/2

    [DeviceC-GigabitEthernet1/0/2] port link-type trunk

    [DeviceC-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceC-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceC-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11

    [DeviceC-GigabitEthernet1/0/2] quit

    4.5.4 Device D的配置

    # 配置端口GigabitEthernet1/0/1、GigabitEthernet1/0/2、GigabitEthernet1/0/3为Trunk端口，允许VLAN 10、VLAN 11的流量通过；GigabitEthernet1/0/1、GigabitEthernet1/0/2使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    system-view

    [DeviceD] vlan 10 to 11

    [DeviceD] interface gigabitethernet 1/0/1

    [DeviceD-GigabitEthernet1/0/1] port link-type trunk

    [DeviceD-GigabitEthernet1/0/1] port trunk permit vlan 10 11

    [DeviceD-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceD-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11

    [DeviceD-GigabitEthernet1/0/1] quit

    [DeviceD] interface gigabitethernet 1/0/2

    [DeviceD-GigabitEthernet1/0/2] port link-type trunk

    [DeviceD-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceD-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceD-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11

    [DeviceD-GigabitEthernet1/0/2] quit

    [DeviceD] interface gigabitethernet 1/0/3

    [DeviceD-GigabitEthernet1/0/3] port link-type trunk

    [DeviceD-GigabitEthernet1/0/3] port trunk permit vlan 10 11

    [DeviceD-GigabitEthernet1/0/3] undo port trunk permit vlan 1

    [DeviceD-GigabitEthernet1/0/3] quit

    4.6 验证配置

    (1) 当Device A正常工作时，查看Smart Link组的信息

    # 查看Device A上的Smart Link组的信息。

    [DeviceA] display smart-link group all

    Smart link group 1 information:

    Device ID : 0000-fc00-2500

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 10

    Protected VLAN : Reference Instance 1

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/1 PRIMARY ACTIVE 0 NA

    GE1/0/2 SECONDARY STANDBY 2 16:22:40 2019/10/29

    Smart link group 2 information:

    Device ID : 0000-fc00-2500

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 11

    Protected VLAN : Reference Instance 2

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/2 PRIMARY ACTIVE 2 16:22:40 2019/10/29

    GE1/0/1 SECONDARY STANDBY 0 NA

    上述信息表示，在Smart Link组1中，Device A的GigabitEthernet1/0/1是主端口，负责转发VLAN 10的流量；在Smart Link组2中，Device A的GigabitEthernet1/0/2是主端口，负责转发VLAN 11的流量。

    (2) 当Device A的GigabitEthernet1/0/1接口Down时，查看Smart Link组的信息

    # 查看Device A上的Smart Link组的信息。

    [DeviceA] display smart-link group all

    Smart link group 1 information:

    Device ID : 0000-fc00-2500

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 10

    Protected VLAN : Reference Instance 1

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/1 PRIMARY DOWN 0 NA

    GE1/0/2 SECONDARY ACTIVE 3 16:43:06 2019/10/29

    Smart link group 2 information:

    Device ID : 0000-fc00-2500

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 11

    Protected VLAN : Reference Instance 2

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/2 PRIMARY ACTIVE 2 16:22:40 2019/10/29

    GE1/0/1 SECONDARY DOWN 0 NA

    上述信息表示，GigabitEthernet1/0/1接口Down时，在Smart Link组1中，Device A的GigabitEthernet1/0/2负责转发VLAN 10的流量；在Smart Link组2中，Device A的GigabitEthernet1/0/2仍然是主端口，负责转发VLAN 11的流量。

    # 通过使用display smart-link flush命令可以查看Device B上收到的Flush报文信息。

    [DeviceB] display smart-link flush

    Received flush packets : 1

    Receiving interface of the last flush packet : GigabitEthernet1/0/2

    Receiving time of the last flush packet : 16:43:08 2019/10/29

    Device ID of the last flush packet : 0000-fc00-2500

    Control VLAN of the last flush packet : 10

    4.7 配置文件

    说明

    部分交换机的配置文件中会显示port link-mode bridge命令，请以实际情况为准。

    ·Device A：

    #

    vlan 1

    #

    vlan 10 to 11

    #

    stp region-configuration

    instance 1 vlan 10

    instance 2 vlan 11

    active region-configuration

    #

    smart-link group 1

    preemption mode role

    preemption delay 10

    flush enable control-vlan 10

    protected-vlan reference-instance 1

    #

    smart-link group 2

    preemption mode role

    preemption delay 10

    flush enable control-vlan 11

    protected-vlan reference-instance 2

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    undo stp enable

    port smart-link group 1 primary

    port smart-link group 2 secondary

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    undo stp enable

    port smart-link group 1 secondary

    port smart-link group 2 primary

    #

    interface GigabitEthernet1/0/3

    port link-mode bridge

    port access vlan 10

    #

    interface GigabitEthernet1/0/4

    port link-mode bridge

    port access vlan 11

    #

    ·Device B：

    #

    vlan 1

    #

    vlan 10 to 11

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    undo stp enable

    smart-link flush enable control-vlan 10 to 11

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    #

    ·Device C：

    #

    vlan 1

    #

    vlan 10 to 11

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    undo stp enable

    smart-link flush enable control-vlan 10 to 11

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    #

    ·Device D：

    #

    vlan 1

    #

    vlan 10 to 11

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    #

    interface GigabitEthernet1/0/3

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    #

    5 Smart Link与Monitor Link联动配置举例

    5.1 组网需求

    如图2所示，区域A和区域B分别使用VLAN 10和VLAN 11，出于可靠性考虑，接入层设备Device A和Device B都提供两条链路分别双上行到汇聚层设备Device C和Device D。现要求如下：

    ·Device A和Device B设备通过配置Smart Link来实现链路备份。

    ·当Device A到Device C和Device D的两条上行链路都正常时，区域A的数据流量优先通过Device A—>Device C的路径转发。当该链路出现故障时，Smart Link功能会将故障链路上的流量快速切换到Device A—>Device D的链路上。当链路故障恢复时，Smart Link功能又会将数据流量及时切换回原来的转发路径。

    ·当Device B到Device C和Device D的两条上行链路都正常时，区域B的数据流量优先通过Device B—>Device D的路径转发。当该链路出现故障时，Smart Link功能会将故障链路上的流量快速切换到Device B—>Device C的链路上。当链路故障恢复时，Smart Link功能又会将数据流量及时切换回原来的转发路径。

    ·通过配置Smart Link和Monitor Link联动，确保Device C和Device D的上行接口出现故障时能够快速感知并将下行接口的状态变为Down，触发Smart Link进行链路切换，从而最大可能地避免区域A和区域B与外部通信中断。

    图2 Smart Link+Monitor Link组配置组网图

    设备

    接口

    VLAN

    设备

    接口

    VLAN

    Device A

    GE1/0/1

    10

    Device D

    GE1/0/1

    11

    GE1/0/2

    10

    GE1/0/2

    10、11

    GE1/0/3

    10

    GE1/0/3

    10

    Device B

    GE1/0/1

    11

    Device E

    GE1/0/1

    10、11

    GE1/0/2

    11

    GE1/0/2

    10、11

    GE1/0/3

    11

    GE1/0/3

    10、11

    Device C

    GE1/0/1

    10

    GE1/0/2

    10、11

    GE1/0/3

    11

    5.2 配置思路

    为了实现Device A和Device B的链路备份，需在Device A和Device B上分别创建一个Smart Link组，区域A和区域B的VLAN分别为这两个Smart Link组的保护VLAN。

    为了实现链路故障恢复时，区域A和区域B的数据流量仍能切换回各自原来的路径转发，需要为两个Smart Link组都配置角色抢占模式。

    为了避免当Smart Link组中的主从链路切换时，由于上游设备上的MAC地址转发表项和ARP/ND表项没有及时更新，而导致下行数据流量发生中断，需要在Device A和Device B上配置发送Flush报文功能，Device C和Device D的下行端口都需要使能接收Flush报文功能。

    5.3 适用产品及版本

    表2 适用产品及版本

    产品

    软件版本

    S6812系列

    S6813系列

    Release 6615Pxx系列、Release 6628Pxx系列

    S6550XE-HI系列

    Release 6008及以上版本、Release 8106Pxx

    S6525XE-HI系列

    Release 6008及以上版本、Release 8106Pxx

    S5850系列

    Release 8005及以上版本、Release 8106Pxx

    S5570S-EI系列

    Release 11xx

    S5560X-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5560X-HI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5500V2-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-30F

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-30C

    MS4520V2-54C

    Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-28S

    MS4520V2-24TP

    Release 63xx系列

    S6520X-HI系列

    S6520X-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S6520X-SI系列

    S6520-SI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5000-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4600系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    ES5500系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5560S-EI系列

    S5560S-SI系列

    Release 63xx系列

    S5500V3-24P-SI

    S5500V3-48P-SI

    Release 63xx系列

    S5500V3-SI系列（除S5500V3-24P-SI、S5500V3-48P-SI）

    Release 11xx

    S5170-EI系列

    Release 11xx

    S5130S-HI系列

    S5130S-EI系列

    S5130S-SI系列

    S5130S-LI系列

    Release 63xx系列

    S5120V2-SI系列

    S5120V2-LI系列

    Release 63xx系列

    S5120V3-EI系列

    Release 11xx

    S5120V3-36F-SI

    S5120V3-28P-HPWR-SI

    S5120V3-54P-PWR-SI

    Release 11xx

    S5120V3-SI系列（除S5120V3-36F-SI、S5120V3-28P-HPWR-SI、S5120V3-54P-PWR-SI）

    Release 63xx系列

    S5120V3-LI系列

    Release 63xx系列

    S3600V3-EI系列

    Release 11xx

    S3600V3-SI系列

    Release 11xx

    S3100V3-EI系列

    S3100V3-SI系列

    Release 63xx系列

    S5110V2系列

    Release 63xx系列

    S5110V2-SI系列

    不支持

    S5000V3-EI系列

    S5000V5-EI系列

    不支持

    S5000E-X系列

    S5000X-EI系列

    不支持

    E128C

    E152C

    E500C系列

    E500D系列

    Release 63xx系列

    MS4320V2系列

    MS4320V3系列

    MS4300V2系列

    MS4320系列

    MS4200系列

    Release 63xx系列

    WS5850-WiNet系列

    Release 63xx系列

    WS5820-WiNet系列

    WS5810-WiNet系列

    Release 63xx系列

    WAS6000系列

    不支持

    IE4300-12P-AC & IE4300-12P-PWR

    IE4300-M系列

    IE4320系列

    Release 63xx系列

    IE4520系列

    Release 66xx系列

    S5135S-EI系列

    Release 6810及以上版本

    5.4 配置注意事项

    ·如果欲配置某端口为Smart Link组的成员端口（主端口或从端口），请先手工关闭该端口，并待Smart Link组配置完成后再开启该端口，以避免形成环路，导致广播风暴。

    ·在配置Smart Link组的成员端口及其直连端口之前，请确认端口未启用STP或者RRPP功能。

    ·上游设备上配置的接收处理Flush报文的控制VLAN和在Smart Link设备上配置的发送控制VLAN需要相同。

    ·不同的Smart Link组需要配置不同的控制VLAN。Smart Link组的控制VLAN应同时为该Smart Link组的保护VLAN，且不要将已配置为控制VLAN的VLAN删除，否则会影响Flush报文的发送。

    ·一个接口只能属于一个Monitor Link组。

    ·请勿通过shutdown或undo shutdown命令手动开启或关闭接口来改变Monitor Link组中下行接口的状态。

    5.5 配置步骤

    5.5.1 Device A的配置

    # 关闭端口GigabitEthernet1/0/1和GigabitEthernet1/0/2，并配置端口为Trunk端口，允许VLAN 10流量通过，并关闭STP。

    system-view

    [DeviceA] vlan 10 to 11

    [DeviceA] interface gigabitethernet 1/0/1

    [DeviceA-GigabitEthernet1/0/1] shutdown

    [DeviceA-GigabitEthernet1/0/1] port link-type trunk

    [DeviceA-GigabitEthernet1/0/1] port trunk permit vlan 10

    [DeviceA-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceA-GigabitEthernet1/0/1] undo stp enable

    [DeviceA-GigabitEthernet1/0/1] quit

    [DeviceA] interface gigabitethernet 1/0/2

    [DeviceA-GigabitEthernet1/0/2] shutdown

    [DeviceA-GigabitEthernet1/0/2] port link-type trunk

    [DeviceA-GigabitEthernet1/0/2] port trunk permit vlan 10

    [DeviceA-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceA-GigabitEthernet1/0/2] undo stp enable

    [DeviceA-GigabitEthernet1/0/2] quit

    # 配置端口GigabitEthernet1/0/3为Access端口，允许VLAN 10流量通过。

    [DeviceA] interface gigabitethernet 1/0/3

    [DeviceA-GigabitEthernet1/0/3] port access vlan 10

    [DeviceA-GigabitEthernet1/0/3] quit

    # 将VLAN 10映射到MSTI 1上，并激活MST域的配置。

    [DeviceA] stp region-configuration

    [DeviceA-mst-region] instance 1 vlan 10

    [DeviceA-mst-region] active region-configuration

    [DeviceA-mst-region] quit

    # 创建Smart Link组1，并配置其保护VLAN为MSTI 1所映射的VLAN。

    [DeviceA] smart-link group 1

    [DeviceA-smlk-group1] protected-vlan reference-instance 1

    # 配置端口GigabitEthernet1/0/1为主端口，GigabitEthernet1/0/2为从端口。

    [DeviceA-smlk-group1] port gigabitethernet 1/0/1 primary

    [DeviceA-smlk-group1] port gigabitethernet 1/0/2 secondary

    # 使能发送Flush报文。

    [DeviceA-smlk-group1] flush enable control-vlan 10

    # 配置抢占模式，配置延时抢占时间为10秒。

    [DeviceA-smlk-group1] preemption mode role

    [DeviceA-smlk-group1] preemption delay 10

    [DeviceA-smlk-group1] quit

    # 开启端口GigabitEthernet1/0/1和GigabitEthernet1/0/2。

    [DeviceA] interface gigabitethernet 1/0/1

    [DeviceA-GigabitEthernet1/0/1] undo shutdown

    [DeviceA-GigabitEthernet1/0/1] quit

    [DeviceA] interface gigabitethernet 1/0/2

    [DeviceA-GigabitEthernet1/0/2] undo shutdown

    [DeviceA-GigabitEthernet1/0/2] quit

    5.5.2 Device B的配置

    # 关闭端口GigabitEthernet1/0/1和GigabitEthernet1/0/2，并配置端口为Trunk端口，允许VLAN 11流量通过，并关闭STP。

    system-view

    [DeviceB] vlan 10 to 11

    [DeviceB] interface gigabitethernet 1/0/1

    [DeviceB-GigabitEthernet1/0/1] shutdown

    [DeviceB-GigabitEthernet1/0/1] port link-type trunk

    [DeviceB-GigabitEthernet1/0/1] port trunk permit vlan 11

    [DeviceB-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceB-GigabitEthernet1/0/1] undo stp enable

    [DeviceB-GigabitEthernet1/0/1] quit

    [DeviceB] interface gigabitethernet 1/0/2

    [DeviceB-GigabitEthernet1/0/2] shutdown

    [DeviceB-GigabitEthernet1/0/2] port link-type trunk

    [DeviceB-GigabitEthernet1/0/2] port trunk permit vlan 11

    [DeviceB-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceB-GigabitEthernet1/0/2] undo stp enable

    [DeviceB-GigabitEthernet1/0/2] quit

    # 配置端口GigabitEthernet1/0/3为Access端口，分别允许VLAN 11流量通过。

    [DeviceB] interface gigabitethernet 1/0/3

    [DeviceB-GigabitEthernet1/0/3] port access vlan 11

    [DeviceB-GigabitEthernet1/0/3] quit

    # 将VLAN 11映射到MSTI 1上，并激活MST域的配置。

    [DeviceB] stp region-configuration

    [DeviceB-mst-region] instance 1 vlan 11

    [DeviceB-mst-region] active region-configuration

    [DeviceB-mst-region] quit

    # 创建Smart Link组1，并配置其保护VLAN为MSTI 1所映射的VLAN。

    [DeviceB] smart-link group 1

    [DeviceB-smlk-group1] protected-vlan reference-instance 1

    # 配置端口GigabitEthernet1/0/1为主端口，GigabitEthernet1/0/2为从端口。

    [DeviceB-smlk-group1] port gigabitethernet 1/0/1 primary

    [DeviceB-smlk-group1] port gigabitethernet 1/0/2 secondary

    # 使能发送Flush报文。

    [DeviceB-smlk-group1] flush enable control-vlan 11

    # 配置抢占模式，配置延时抢占时间为10秒。

    [DeviceB-smlk-group1] preemption mode role

    [DeviceB-smlk-group1] preemption delay 10

    [DeviceB-smlk-group1] quit

    # 开启端口GigabitEthernet1/0/1和GigabitEthernet1/0/2。

    [DeviceB] interface gigabitethernet 1/0/1

    [DeviceB-GigabitEthernet1/0/1] undo shutdown

    [DeviceB-GigabitEthernet1/0/1] quit

    [DeviceB] interface gigabitethernet 1/0/2

    [DeviceB-GigabitEthernet1/0/2] undo shutdown

    [DeviceB-GigabitEthernet1/0/2] quit

    5.5.3 Device C的配置

    # 配置端口GigabitEthernet1/0/1为Trunk端口，允许VLAN 10流量通过，在该端口上关闭STP并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10。

    system-view

    [DeviceC] vlan 10 to 11

    [DeviceC] interface gigabitethernet 1/0/1

    [DeviceC-GigabitEthernet1/0/1] port link-type trunk

    [DeviceC-GigabitEthernet1/0/1] port trunk permit vlan 10

    [DeviceC-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceC-GigabitEthernet1/0/1] undo stp enable

    [DeviceC-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10

    [DeviceC-GigabitEthernet1/0/1] quit

    # 配置端口GigabitEthernet1/0/2为Trunk端口，允许VLAN 10、VLAN11流量通过，并使能Flush报文接收。

    [DeviceC] interface gigabitethernet 1/0/2

    [DeviceC-GigabitEthernet1/0/2] port link-type trunk

    [DeviceC-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceC-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceC-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11

    [DeviceC-GigabitEthernet1/0/2] quit

    # 配置端口GigabitEthernet1/0/3为Trunk端口，允许VLAN 11流量通过，在该端口上关闭STP并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 11。

    [DeviceC] interface gigabitethernet 1/0/3

    [DeviceC-GigabitEthernet1/0/3] port link-type trunk

    [DeviceC-GigabitEthernet1/0/3] port trunk permit vlan 11

    [DeviceC-GigabitEthernet1/0/3] undo port trunk permit vlan 1

    [DeviceC-GigabitEthernet1/0/3] undo stp enable

    [DeviceC-GigabitEthernet1/0/3] smart-link flush enable control-vlan 11

    [DeviceC-GigabitEthernet1/0/3] quit

    # 创建Monitor Link组1。

    [DeviceC] monitor-link group 1

    # 配置触发Monitor Link组状态切换的上行接口阈值为1。

    [DeviceC-mtlk-group1] uplink up-port-threshold 1

    # GigabitEthernet1/0/2配置为上行接口，GigabitEthernet1/0/1和GigabitEthernet1/0/3配置为下行接口。

    [DeviceC-mtlk-group1] port gigabitethernet 1/0/2 uplink

    [DeviceC-mtlk-group1] port gigabitethernet 1/0/1 downlink

    [DeviceC-mtlk-group1] port gigabitethernet 1/0/3 downlink

    [DeviceC-mtlk-group1] quit

    5.5.4 Device D的配置

    # 配置端口GigabitEthernet1/0/1为Trunk端口，允许VLAN 11流量通过，在该端口上关闭STP并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 11。

    system-view

    [DeviceD] vlan 10 to 11

    [DeviceD] interface gigabitethernet 1/0/1

    [DeviceD-GigabitEthernet1/0/1] port link-type trunk

    [DeviceD-GigabitEthernet1/0/1] port trunk permit vlan 11

    [DeviceD-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceD-GigabitEthernet1/0/1] undo stp enable

    [DeviceD-GigabitEthernet1/0/1] smart-link flush enable control-vlan 11

    [DeviceD-GigabitEthernet1/0/1] quit

    # 配置端口GigabitEthernet1/0/2为Trunk端口，允许VLAN 10、VLAN11流量通过，并使能Flush报文接收。

    [DeviceD] interface gigabitethernet 1/0/2

    [DeviceD-GigabitEthernet1/0/2] port link-type trunk

    [DeviceD-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceD-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceD-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11

    [DeviceD-GigabitEthernet1/0/2] quit

    # 配置端口GigabitEthernet1/0/3为Trunk端口，允许VLAN 10流量通过，在该端口上关闭STP并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10。

    [DeviceD] interface gigabitethernet 1/0/3

    [DeviceD-GigabitEthernet1/0/3] port link-type trunk

    [DeviceD-GigabitEthernet1/0/3] port trunk permit vlan 10

    [DeviceD-GigabitEthernet1/0/3] undo port trunk permit vlan 1

    [DeviceD-GigabitEthernet1/0/3] undo stp enable

    [DeviceD-GigabitEthernet1/0/3] smart-link flush enable control-vlan 10

    [DeviceD-GigabitEthernet1/0/3] quit

    # 创建Monitor Link组1。

    [DeviceD] monitor-link group 1

    # 配置触发Monitor Link组状态切换的上行接口阈值为1。

    [DeviceD-mtlk-group1] uplink up-port-threshold 1

    # GigabitEthernet1/0/2配置为上行接口，GigabitEthernet1/0/1和GigabitEthernet1/0/3配置为下行接口。

    [DeviceD-mtlk-group1] port gigabitethernet 1/0/2 uplink

    [DeviceD-mtlk-group1] port gigabitethernet 1/0/1 downlink

    [DeviceD-mtlk-group1] port gigabitethernet 1/0/3 downlink

    [DeviceD-mtlk-group1] quit

    5.5.5 Device E的配置

    # 配置端口GigabitEthernet1/0/1、GigabitEthernet1/0/2、GigabitEthernet1/0/3为Trunk端口，允许VLAN 10、VLAN 11的流量通过；GigabitEthernet1/0/1、GigabitEthernet1/0/2使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    system-view

    [DeviceE] vlan 10 to 11

    [DeviceE] interface gigabitethernet 1/0/1

    [DeviceE-GigabitEthernet1/0/1] port link-type trunk

    [DeviceE-GigabitEthernet1/0/1] port trunk permit vlan 10 11

    [DeviceE-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceE-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11

    [DeviceE-GigabitEthernet1/0/1] quit

    [DeviceE] interface gigabitethernet 1/0/2

    [DeviceE-GigabitEthernet1/0/2] port link-type trunk

    [DeviceE-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceE-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceE-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11

    [DeviceE-GigabitEthernet1/0/2] quit

    [DeviceE] interface gigabitethernet 1/0/3

    [DeviceE-GigabitEthernet1/0/3] port link-type trunk

    [DeviceE-GigabitEthernet1/0/3] port trunk permit vlan 10 11

    [DeviceE-GigabitEthernet1/0/3] undo port trunk permit vlan 1

    [DeviceE-GigabitEthernet1/0/3] quit

    5.6 验证配置

    (1) 当Device A和Device B正常工作时，查看Smart Link组的信息

    # 查看Device A上的Smart Link组的信息。

    [DeviceA] display smart-link group all

    Smart link group 1 information:

    Device ID : 0000-fc00-2500

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 10

    Protected VLAN : Reference Instance 1

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/1 PRIMARY ACTIVE 1 17:37:49 2019/10/29

    GE1/0/2 SECONDARY STANDBY 3 17:43:06 2019/10/29

    # 查看Device B上的Smart Link组的信息。

    [DeviceB] display smart-link group all

    Smart link group 1 information:

    Device ID : 0000-fc01-2501

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 11

    Protected VLAN : Reference Instance 2

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/1 PRIMARY ACTIVE 2 17:22:40 2019/10/29

    GE1/0/2 SECONDARY STANDBY 0 NA

    上述信息表示，在Device A设备的Smart Link组1中，Device A的GigabitEthernet1/0/1是主端口，负责转发VLAN 10的流量；在Device B设备的Smart Link组1中，Device B的GigabitEthernet1/0/1是主端口，负责转发VLAN 11的流量。

    (2) 当Device C和Device D正常工作时，查看Monitor Link组的信息

    # 查看Device C上的Monitor Link组的信息。

    [DeviceC] display monitor-link group all

    Monitor link group 1 information:

    Group status : UP

    Downlink up-delay: 0(s)

    Last-up-time : 17:07:26 2019/10/29

    Last-down-time : -

    Up-port-threshold: 1

    Member Role Status

    --------------------------------------------

    GE1/0/2 UPLINK UP

    GE1/0/1 DOWNLINK UP

    GE1/0/3 DOWNLINK UP

    # 查看Device D上的Monitor Link组的信息。

    [DeviceD] display monitor-link group all

    Monitor link group 1 information:

    Group status : UP

    Downlink up-delay: 0(s)

    Last-up-time : 17:09:33 2019/10/29

    Last-down-time : -

    Up-port-threshold: 1

    Member Role Status

    --------------------------------------------

    GE1/0/2 UPLINK UP

    GE1/0/1 DOWNLINK UP

    GE1/0/3 DOWNLINK UP

    上述信息表示，Device C设备的Monitor Link 1中，GigabitEthernet1/0/2为上行接口，GigabitEthernet1/0/1和GigabitEthernet1/0/3为下行接口；Device D设备的Monitor Link 2中，GigabitEthernet1/0/2为上行接口，GigabitEthernet1/0/1和GigabitEthernet1/0/3为下行接口。

    (3) 当Device A的GigabitEthernet1/0/1接口Down时，查看Smart Link组的信息

    # 查看Device A上的Smart Link组的信息。

    [DeviceA] display smart-link group all

    Smart link group 1 information:

    Device ID : 0000-fc00-2500

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 10

    Protected VLAN : Reference Instance 1

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/1 PRIMARY DOWN 1 17:37:49 2019/10/29

    GE1/0/2 SECONDAR ACTIVE 4 17:49:06 2019/10/29

    上述信息表示，Device A的GigabitEthernet1/0/1接口Down时，在Smart Link组1中， GigabitEthernet1/0/2负责转发VLAN 10的流量。

    # 通过使用display smart-link flush命令可以查看Device C上收到的Flush报文信息。

    [DeviceC] display smart-link flush

    Received flush packets : 1

    Receiving interface of the last flush packet : GigabitEthernet1/0/2

    Receiving time of the last flush packet : 17:49:08 2019/10/29

    Device ID of the last flush packet : 0000-fc00-2500

    Control VLAN of the last flush packet : 10

    (4) 当Device C的上行接口GigabitEthernet1/0/2的状态变为Down时，查看Monitor Link组的信息

    # 查看Device C上的Monitor Link组的信息。

    [DeviceC] display monitor-link group all

    Monitor link group 1 information:

    Group status : DOWN

    Downlink up-delay: 0(s)

    Last-up-time : 17:07:26 2019/10/29

    Last-down-time : 18:01:05 2019/10/29

    Up-port-threshold: 1

    Member Role Status

    --------------------------------------------

    GE1/0/2 UPLINK DOWN

    GE1/0/1 DOWNLINK DOWN (Monitor Link)

    GE1/0/3 DOWNLINK DOWN (Monitor Link)

    # 查看Device D上的Monitor Link组的信息。

    [DeviceD] display monitor-link group all

    Monitor link group 1 information:

    Group status : UP

    Downlink up-delay: 0(s)

    Last-up-time : 17:09:33 2019/10/29

    Last-down-time : -

    Up-port-threshold: 1

    Member Role Status

    --------------------------------------------

    GE1/0/2 UPLINK UP

    GE1/0/1 DOWNLINK UP

    GE1/0/3 DOWNLINK UP

    上述信息表示，Device C设备的GigabitEthernet1/0/2状态变为Down时，Device C上的Monitor Link 1的状态变为Down，所有下行接口的状态变为Down。

    # 查看Device A上的Smart Link组的信息。

    [DeviceA] display smart-link group all

    Smart link group 1 information:

    Device ID : 0000-fc00-2500

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 10

    Protected VLAN : Reference Instance 1

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/1 PRIMARY DOWN 2 17:57:49 2019/10/29

    GE1/0/2 SECONDAR ACTIVE 5 18:01:06 2019/10/29

    上述信息表示，Device A的GigabitEthernet1/0/1状态也变为Down，在Smart Link组1中， GigabitEthernet1/0/2负责转发VLAN 10的流量。

    5.7 配置文件

    说明

    部分交换机的配置文件中会显示port link-mode bridge命令，请以实际情况为准。

    ·Device A：

    #

    vlan 1

    #

    vlan 10

    #

    stp region-configuration

    instance 1 vlan 10

    active region-configuration

    #

    smart-link group 1

    preemption mode role

    preemption delay 10

    flush enable control-vlan 10

    protected-vlan reference-instance 1

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10

    undo stp enable

    port smart-link group 1 primary

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10

    undo stp enable

    port smart-link group 1 secondary

    #

    interface GigabitEthernet1/0/3

    port link-mode bridge

    port access vlan 10

    #

    ·Device B：

    #

    vlan 1

    #

    vlan 11

    #

    stp region-configuration

    instance 1 vlan 11

    active region-configuration

    #

    smart-link group 1

    preemption mode role

    preemption delay 10

    flush enable control-vlan 11

    protected-vlan reference-instance 1

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 11

    undo stp enable

    port smart-link group 1 primary

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 11

    undo stp enable

    port smart-link group 1 secondary

    #

    interface GigabitEthernet1/0/3

    port link-mode bridge

    port access vlan 11

    #

    ·Device C：

    #

    vlan 1

    #

    vlan 10 to 11

    #

    monitor-link group 1

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10

    undo stp enable

    smart-link flush enable control-vlan 10

    port monitor-link group 1 downlink

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    port monitor-link group 1 uplink

    #

    interface GigabitEthernet1/0/3

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 11

    undo stp enable

    smart-link flush enable control-vlan 11

    port monitor-link group 1 downlink

    #

    ·Device D：

    #

    vlan 1

    #

    vlan 10 to 11

    #

    monitor-link group 1

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 11

    undo stp enable

    smart-link flush enable control-vlan 11

    port monitor-link group 1 downlink

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    port monitor-link group 1 uplink

    #

    interface GigabitEthernet1/0/3

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10

    undo stp enable

    smart-link flush enable control-vlan 10

    port monitor-link group 1 downlink

    #

    ·Device E：

    #

    vlan 1

    #

    vlan 10 to 11

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    #

    interface GigabitEthernet1/0/3

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    #

    6 在IRF中应用Smart Link典型配置举例

    6.1 组网需求

    如图3所示，某企业财务部和市场部分别使用VLAN 10和VLAN 11接入Device A和Device B。为了扩展性考虑，接入层设备Device A和Device B组成IRF，接入汇聚层设备Device C和Device D。现要求如下：

    ·接入层设备通过配置Smart Link来实现链路备份。

    ·当Device A和Device B的上行链路都正常时，财务部和市场部的数据流量通过Device A—>Device C的路径进行转发；当该链路出现故障时，Smart Link功能会将故障链路上的流量快速切换到另一条链路上；当链路故障恢复时，Smart Link功能又会将数据流量及时切换回原来的转发路径。

    图3 Smart Link +IRF组配置组网图

    设备

    接口

    VLAN

    设备

    接口

    VLAN

    Device A

    GE1/0/1

    10、11

    Device B

    GE2/0/1

    10、11

    GE1/0/3

    10

    GE2/0/3

    11

    Device C

    GE1/0/1

    10、11

    Device D

    GE1/0/1

    10、11

    GE1/0/2

    10、11

    GE1/0/2

    10、11

    6.2 配置思路

    为了实现Device A和Device B的链路备份，需在Device A 和Device B上创建一个Smart Link组，财务部和市场部的VLAN为这个Smart Link组的保护VLAN。

    为了实现链路故障恢复时，财务部和市场部的数据流量仍能切换回各自原来的路径转发，需要为两个Smart Link组都配置角色抢占模式。

    为了避免当Smart Link组中的主从链路切换时，由于上游设备上的MAC地址转发表项和ARP/ND表项没有及时更新，而导致下行数据流量发生中断，需要在Device A和Device B上配置发送Flush报文功能，Device C、Device D的GigabitEthernet1/0/1端口需要使能接收Flush报文功能。

    6.3 适用产品及版本

    表3 适用产品及版本

    产品

    软件版本

    S6812系列

    S6813系列

    Release 6615Pxx系列、Release 6628Pxx系列

    S6550XE-HI系列

    Release 6008及以上版本、Release 8106Pxx

    S6525XE-HI系列

    Release 6008及以上版本、Release 8106Pxx

    S5850系列

    Release 8005及以上版本、Release 8106Pxx

    S5570S-EI系列

    Release 11xx

    S5560X-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5560X-HI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5500V2-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-30F

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-30C

    MS4520V2-54C

    Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4520V2-28S

    MS4520V2-24TP

    Release 63xx系列

    S6520X-HI系列

    S6520X-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S6520X-SI系列

    S6520-SI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5000-EI系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    MS4600系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    ES5500系列

    Release 63xx系列、Release 65xx系列、Release 6615Pxx系列、Release 6628Pxx系列

    S5560S-EI系列

    S5560S-SI系列

    Release 63xx系列

    S5500V3-24P-SI

    S5500V3-48P-SI

    Release 63xx系列

    S5500V3-SI系列（除S5500V3-24P-SI、S5500V3-48P-SI）

    Release 11xx

    S5170-EI系列

    Release 11xx

    S5130S-HI系列

    S5130S-EI系列

    S5130S-SI系列

    S5130S-LI系列

    Release 63xx系列

    S5120V2-SI系列

    S5120V2-LI系列

    Release 63xx系列

    S5120V3-EI系列

    Release 11xx

    S5120V3-36F-SI

    S5120V3-28P-HPWR-SI

    S5120V3-54P-PWR-SI

    Release 11xx

    S5120V3-SI系列（除S5120V3-36F-SI、S5120V3-28P-HPWR-SI、S5120V3-54P-PWR-SI）

    Release 63xx系列

    S5120V3-LI系列

    Release 63xx系列

    S3600V3-EI系列

    Release 11xx

    S3600V3-SI系列

    Release 11xx

    S3100V3-EI系列

    S3100V3-SI系列

    Release 63xx系列

    S5110V2系列

    Release 63xx系列

    S5110V2-SI系列

    不支持

    S5000V3-EI系列

    S5000V5-EI系列

    不支持

    S5000E-X系列

    S5000X-EI系列

    不支持

    E128C

    E152C

    E500C系列

    E500D系列

    Release 63xx系列

    MS4320V2系列

    MS4320V3系列

    MS4300V2系列

    MS4320系列

    MS4200系列

    Release 63xx系列

    WS5850-WiNet系列

    Release 63xx系列

    WS5820-WiNet系列

    WS5810-WiNet系列

    Release 63xx系列

    WAS6000系列

    不支持

    IE4300-12P-AC & IE4300-12P-PWR

    IE4300-M系列

    IE4320系列

    Release 63xx系列

    IE4520系列

    Release 66xx系列

    S5135S-EI系列

    Release 6810及以上版本

    6.4 配置注意事项

    ·如果欲配置某端口为Smart Link组的成员端口（主端口或从端口），请先手工关闭该端口，并待Smart Link组配置完成后再开启该端口，以避免形成环路，导致广播风暴。

    ·在配置Smart Link组的成员端口及其直连端口之前，请确认端口未启用STP或者RRPP功能。

    ·上游设备上配置的接收处理Flush报文的控制VLAN和在Smart Link设备上配置的发送控制VLAN需要相同。

    ·Smart Link组的控制VLAN应同时为该Smart Link组的保护VLAN，且不要将已配置为控制VLAN的VLAN删除，否则会影响Flush报文的发送。

    ·有关IRF的配置注意事项，请参见“虚拟化技术配置指导”中的“IRF”。

    6.5 配置步骤

    6.5.1 搭建IRF

    1. Device A的配置

    # 配置IRF端口1/2，并将它与物理端口GigabitEthernet1/0/2绑定，并保存配置。

    [DeviceA] interface gigabitethernet 1/0/2

    [DeviceA-GigabitEthernet1/0/2] shutdown

    [DeviceA-GigabitEthernet1/0/2] quit

    [DeviceA] irf-port 1/2

    [DeviceA-irf-port1/2] port group interface gigabitethernet 1/0/2

    [DeviceA-irf-port1/2] quit

    [DeviceA] interface gigabitethernet 1/0/2

    [DeviceA-GigabitEthernet1/0/2] undo shutdown

    [DeviceA-GigabitEthernet1/0/2] quit

    [DeviceA] save

    # 激活IRF端口下的配置。

    [DeviceA] irf-port-configuration active

    2. Device B的配置

    # 将Device B的成员编号配置为2，并重启设备使新编号生效。

    system-view

    [DeviceB] irf member 1 remember 2

    Warning: Renumbering the member ID may result in configuration change or loss. Continue? [Y/N]:y

    [DeviceB] quit

    reboot

    # 参照图3进行物理连线。

    # 配置IRF端口2/1，并将它与物理端口GigabitEthernet2/0/2绑定，并保存配置。

    system-view

    [DeviceB] interface gigabitethernet 2/0/2

    [DeviceB-GigabitEthernet2/0/2] shutdown

    [DeviceB-GigabitEthernet2/0/2] quit

    [DeviceB] irf-port 2/1

    [DeviceB-irf-port2/1] port group interface gigabitethernet 2/0/2

    [DeviceB-irf-port2/1] quit

    [DeviceB] interface gigabitethernet 2/0/2

    [DeviceB-GigabitEthernet2/0/2] undo shutdown

    [DeviceB-GigabitEthernet2/0/2] quit

    [DeviceB] save

    # 激活IRF端口下的配置。

    [DeviceB] irf-port-configuration active

    Device A和Device B间将会进行主设备竞选，竞选失败的一方将重启，重启完成后，IRF形成。

    6.5.2 配置Smart Link

    1. Device A的配置

    # 关闭端口GigabitEthernet1/0/1和GigabitEthernet2/0/1，并配置端口为Trunk端口，允许VLAN 10、VLAN 11流量通过，并关闭STP。

    system-view

    [DeviceA] vlan 10 to 11

    [DeviceA] interface gigabitethernet 1/0/1

    [DeviceA-GigabitEthernet1/0/1] shutdown

    [DeviceA-GigabitEthernet1/0/1] port link-type trunk

    [DeviceA-GigabitEthernet1/0/1] port trunk permit vlan 10 11

    [DeviceA-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceA-GigabitEthernet1/0/1] undo stp enable

    [DeviceA-GigabitEthernet1/0/1] quit

    [DeviceA] interface gigabitethernet 2/0/1

    [DeviceA-GigabitEthernet2/0/1] shutdown

    [DeviceA-GigabitEthernet2/0/1] port link-type trunk

    [DeviceA-GigabitEthernet2/0/1] port trunk permit vlan 10 11

    [DeviceA-GigabitEthernet2/0/1] undo port trunk permit vlan 1

    [DeviceA-GigabitEthernet2/0/1] undo stp enable

    [DeviceA-GigabitEthernet2/0/1] quit

    # 配置端口GigabitEthernet1/0/3为Access端口，允许VLAN 10流量通过。

    [DeviceA] interface gigabitethernet 1/0/3

    [DeviceA-GigabitEthernet1/0/3] port access vlan 10

    [DeviceA-GigabitEthernet1/0/3] quit

    # 配置端口GigabitEthernet2/0/3为Access端口，允许VLAN 11流量通过。

    [DeviceA] interface gigabitethernet 2/0/3

    [DeviceA-GigabitEthernet2/0/3] port access vlan 11

    [DeviceA-GigabitEthernet2/0/3] quit

    # 将VLAN 10和VLAN 11映射到MSTI 1上，并激活MST域的配置。

    [DeviceA] stp region-configuration

    [DeviceA-mst-region] instance 1 vlan 10 11

    [DeviceA-mst-region] active region-configuration

    [DeviceA-mst-region] quit

    # 创建Smart Link组1，并配置其保护VLAN为MSTI 1所映射的VLAN。

    [DeviceA] smart-link group 1

    [DeviceA-smlk-group1] protected-vlan reference-instance 1

    # 配置端口GigabitEthernet1/0/1为主端口，GigabitEthernet2/0/1为从端口。

    [DeviceA-smlk-group1] port gigabitethernet 1/0/1 primary

    [DeviceA-smlk-group1] port gigabitethernet 2/0/1 secondary

    # 使能发送Flush报文。

    [DeviceA-smlk-group1] flush enable control-vlan 10

    # 配置抢占模式，配置延时抢占时间为10秒。

    [DeviceA-smlk-group1] preemption mode role

    [DeviceA-smlk-group1] preemption delay 10

    [DeviceA-smlk-group1] quit

    # 开启端口GigabitEthernet1/0/1和GigabitEthernet2/0/1。

    [DeviceA] interface gigabitethernet 1/0/1

    [DeviceA-GigabitEthernet1/0/1] undo shutdown

    [DeviceA-GigabitEthernet1/0/1] quit

    [DeviceA] interface gigabitethernet 2/0/1

    [DeviceA-GigabitEthernet2/0/1] undo shutdown

    [DeviceA-GigabitEthernet2/0/1] quit

    2. Device C的配置

    # 配置端口GigabitEthernet1/0/1为Trunk端口，允许VLAN 10和11流量通过，在该端口上关闭STP并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    system-view

    [DeviceC] vlan 10 to 11

    [DeviceC] interface gigabitethernet 1/0/1

    [DeviceC-GigabitEthernet1/0/1] port link-type trunk

    [DeviceC-GigabitEthernet1/0/1] port trunk permit vlan 10 11

    [DeviceC-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceC-GigabitEthernet1/0/1] undo stp enable

    [DeviceC-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11

    [DeviceC-GigabitEthernet1/0/1] quit

    # 配置端口GigabitEthernet1/0/2为Trunk端口，允许VLAN 10和11流量通过，使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    [DeviceC] interface gigabitethernet 1/0/2

    [DeviceC-GigabitEthernet1/0/2] port link-type trunk

    [DeviceC-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceC-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceC-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11

    [DeviceC-GigabitEthernet1/0/2] quit

    3. Device D的配置

    # 配置端口GigabitEthernet1/0/1为Trunk端口，允许VLAN 10和11流量通过，在该端口上关闭STP并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    system-view

    [DeviceD] vlan 10 to 11

    [DeviceD] interface gigabitethernet 1/0/1

    [DeviceD-GigabitEthernet1/0/1] port link-type trunk

    [DeviceD-GigabitEthernet1/0/1] port trunk permit vlan 10 11

    [DeviceD-GigabitEthernet1/0/1] undo port trunk permit vlan 1

    [DeviceD-GigabitEthernet1/0/1] undo stp enable

    [DeviceD-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11

    [DeviceD-GigabitEthernet1/0/1] quit

    # 配置端口GigabitEthernet1/0/2为Trunk端口，允许VLAN 10和11流量通过，并使能Flush报文接收，并指定接收Flush报文的控制VLAN为VLAN 10和11。

    [DeviceD] interface gigabitethernet 1/0/2

    [DeviceD-GigabitEthernet1/0/2] port link-type trunk

    [DeviceD-GigabitEthernet1/0/2] port trunk permit vlan 10 11

    [DeviceD-GigabitEthernet1/0/2] undo port trunk permit vlan 1

    [DeviceD-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11

    [DeviceD-GigabitEthernet1/0/2] quit

    6.6 验证配置

    (1) 配置完成后，查看IRF的相关信息

    # 在Device A上查看IRF的相关信息。

    display irf

    MemberID Role Priority CPU-Mac Description

    *+1 Master 1 0210-fc01-0001 -----

    2 Standby 1 0210-fc02-0002 -----

    --------------------------------------------------------

    * indicates the device is the master.

    + indicates the device through which the user logs in.

    The Bridge MAC of the IRF is: 00e0-fc00-1000

    Auto upgrade : yes

    Mac persistent : 6 min

    Domain ID : 0

    以上显示信息表明IRF已经成功建立。

    (2) 当Device A正常工作时，查看Smart Link组的信息

    # 查看Device A上的Smart Link组的信息。

    [DeviceA] display smart-link group all

    Smart link group 1 information:

    Device ID : 00e0-fc00-c518

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 10

    Protected VLAN : Reference Instance 1

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/1 PRIMARY ACTIVE 3 18:16:44 2019/10/29

    GE2/0/1 SECONDARY STANDBY 0 NA

    上述信息表示，在Smart Link组1中，Device A的GigabitEthernet1/0/1是主端口，负责转发VLAN 10和VLAN 11的流量，Device B的GigabitEthernet2/0/1是从端口，作为备份端口。

    (3) 当Device A的GigabitEthernet1/0/1接口Down时，查看Smart Link组的信息

    # 查看Device A上的Smart Link组的信息。

    [DeviceA] display smart-link group all

    Smart link group 1 information:

    Device ID : 00e0-fc00-c518

    Preemption mode : Role

    Preemption delay: 10(s)

    Control VLAN : 10

    Protected VLAN : Reference Instance 1

    Member Role State Flush-count Last-flush-time

    -----------------------------------------------------------------------------

    GE1/0/1 PRIMARY DOWN 3 18:16:44 2019/10/29

    GE2/0/1 SECONDARY ACTIVE 1 18:22:37 2019/10/29

    上述信息表示，Device A的GigabitEthernet1/0/1接口Down时，在Smart Link组1中，Device B的GigabitEthernet2/0/1负责转发VLAN 10和VLAN 11的流量。

    # 通过使用display smart-link flush命令可以查看Device C上收到的Flush报文信息。

    [DeviceC] display smart-link flush

    Received flush packets : 1

    Receiving interface of the last flush packet : GigabitEthernet1/0/3

    Receiving time of the last flush packet : 18:22:39 2019/10/29

    Device ID of the last flush packet : 00e0-fc00-c518

    Control VLAN of the last flush packet : 10

    # 通过使用display smart-link flush命令可以查看Device D上收到的Flush报文信息。

    [DeviceD] display smart-link flush

    Received flush packets : 1

    Receiving interface of the last flush packet : GigabitEthernet1/0/1

    Receiving time of the last flush packet : 18:22:38 2019/10/29

    Device ID of the last flush packet : 00e0-fc00-c518

    Control VLAN of the last flush packet : 10

    6.7 配置文件

    说明

    部分交换机的配置文件中会显示port link-mode bridge命令，请以实际情况为准。

    ·Device A

    #

    sysname DeviceA

    #

    vlan 10 to 11

    #

    irf mac-address persistent always

    irf auto-update enable

    undo irf link-delay

    irf member 1 priority 1

    irf member 2 priority 1

    #

    irf-port 1/2

    port group interface GigabitEthernet1/0/2

    #

    irf-port 2/1

    port group 1 interface GigabitEthernet2/0/2

    #

    stp region-configuration

    instance 1 vlan 10 to 11

    active region-configuration

    #

    smart-link group 1

    preemption mode role

    preemption delay 10

    flush enable control-vlan 10

    protected-vlan reference-instance 1

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    undo stp enable

    port smart-link group 1 primary

    #

    interface GigabitEthernet1/0/3

    port link-mode bridge

    port access vlan 10

    #

    interface GigabitEthernet2/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    undo stp enable

    port smart-link group 1 secondary

    #

    interface GigabitEthernet2/0/3

    port link-mode bridge

    port access vlan 11

    #

    ·Device C

    #

    sysname DeviceC

    #

    vlan 10 to 11

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    undo stp enable

    smart-link flush enable control-vlan 10 to 11

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    #

    ·Device D

    #

    sysname DeviceD

    #

    vlan 10 to 11

    #

    interface GigabitEthernet1/0/1

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    undo stp enable

    smart-link flush enable control-vlan 10 to 11

    #

    interface GigabitEthernet1/0/2

    port link-mode bridge

    port link-type trunk

    undo port trunk permit vlan 1

    port trunk permit vlan 10 to 11

    smart-link flush enable control-vlan 10 to 11

    #

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