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05-Smart Link典型配置举例
本章节下载： 05-Smart Link典型配置举例 (465.71 KB)
本文档介绍了Smart Link配置举例。
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。
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。
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 |
XGE1/0/1 |
10、11 |
Device C |
XGE1/0/1 |
10、11 |
|
|
XGE1/0/2 |
10、11 |
|
XGE1/0/2 |
10、11 |
|
|
XGE1/0/3 |
10 |
Device D |
XGE1/0/1 |
10、11 |
|
|
XGE1/0/4 |
11 |
|
XGE1/0/2 |
10、11 |
|
Device B |
XGE1/0/1 |
10、11 |
|
XGE1/0/3 |
10、11 |
|
|
XGE1/0/2 |
10、11 |
|
|
|
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。
|
产品 |
软件版本 |
|
S6805系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6825系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6850系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9850系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9820-64H |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9820-8C |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6800系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6860系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6826系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9826系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
· 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。
# 关闭端口Ten-GigabitEthernet1/0/1和Ten-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。
<DeviceA> system-view
[DeviceA] vlan 10 to 11
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] shutdown
[DeviceA-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceA-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10 11
[DeviceA-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceA-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceA-Ten-GigabitEthernet1/0/1] quit
[DeviceA] interface ten-gigabitethernet 1/0/2
[DeviceA-Ten-GigabitEthernet1/0/2] shutdown
[DeviceA-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceA-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceA-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceA-Ten-GigabitEthernet1/0/2] undo stp enable
[DeviceA-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-GigabitEthernet1/0/3、Ten-GigabitEthernet1/0/4为Access端口，分别允许VLAN 10和VLAN 11流量通过。
[DeviceA] interface ten-gigabitethernet 1/0/3
[DeviceA-Ten-GigabitEthernet1/0/3] port access vlan 10
[DeviceA-Ten-GigabitEthernet1/0/3] quit
[DeviceA] interface ten-gigabitethernet 1/0/4
[DeviceA-Ten-GigabitEthernet1/0/4] port access vlan 11
[DeviceA-Ten-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Ten-GigabitEthernet1/0/1为主端口，Ten-GigabitEthernet1/0/2为从端口。
[DeviceA-smlk-group1] port ten-gigabitethernet 1/0/1 primary
[DeviceA-smlk-group1] port ten-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Ten-GigabitEthernet1/0/2为主端口，Ten-GigabitEthernet1/0/1为从端口。
[DeviceA-smlk-group2] port ten-gigabitethernet 1/0/2 primary
[DeviceA-smlk-group2] port ten-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Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/2。
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] undo shutdown
[DeviceA-Ten-GigabitEthernet1/0/1] quit
[DeviceA] interface ten-gigabitethernet 1/0/2
[DeviceA-Ten-GigabitEthernet1/0/2] undo shutdown
[DeviceA-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-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。
<DeviceB> system-view
[DeviceB] vlan 10 to 11
[DeviceB] interface ten-gigabitethernet 1/0/1
[DeviceB-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceB-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10 11
[DeviceB-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceB-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceB-Ten-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11
[DeviceB-Ten-GigabitEthernet1/0/1] quit
# 配置端口Ten-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 ten-gigabitethernet 1/0/2
[DeviceB-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceB-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceB-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceB-Ten-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11
[DeviceB-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-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。
<DeviceC> system-view
[DeviceC] vlan 10 to 11
[DeviceC] interface ten-gigabitethernet 1/0/1
[DeviceC-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceC-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceC-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceC-Ten-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/1] quit
# 配置端口Ten-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 ten-gigabitethernet 1/0/2
[DeviceC-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceC-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceC-Ten-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-GigabitEthernet1/0/1、Ten-GigabitEthernet1/0/2、Ten-GigabitEthernet1/0/3为Trunk端口，允许VLAN 10、VLAN 11的流量通过；Ten-GigabitEthernet1/0/1、Ten-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。
<DeviceD> system-view
[DeviceD] vlan 10 to 11
[DeviceD] interface ten-gigabitethernet 1/0/1
[DeviceD-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceD-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceD-Ten-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/1] quit
[DeviceD] interface ten-gigabitethernet 1/0/2
[DeviceD-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceD-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceD-Ten-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/2] quit
[DeviceD] interface ten-gigabitethernet 1/0/3
[DeviceD-Ten-GigabitEthernet1/0/3] port link-type trunk
[DeviceD-Ten-GigabitEthernet1/0/3] port trunk permit vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/3] undo port trunk permit vlan 1
[DeviceD-Ten-GigabitEthernet1/0/3] quit
(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
-----------------------------------------------------------------------------
XGE1/0/1 PRIMARY ACTIVE 0 NA
XGE1/0/2 SECONDARY STANDBY 2 16:22:40 2014/12/29
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
-----------------------------------------------------------------------------
XGE1/0/2 PRIMARY ACTIVE 2 16:22:40 2014/12/29
XGE1/0/1 SECONDARY STANDBY 0 NA
上述信息表示，在Smart Link组1中，Device A的Ten-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Ten-GigabitEthernet1/0/2是主端口，负责转发VLAN 11的流量。
(2) 当Device A的Ten-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
-----------------------------------------------------------------------------
XGE1/0/1 PRIMARY DOWN 0 NA
XGE1/0/2 SECONDARY ACTIVE 3 16:43:06 2014/12/29
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
-----------------------------------------------------------------------------
XGE1/0/2 PRIMARY ACTIVE 2 16:22:40 2014/12/29
XGE1/0/1 SECONDARY DOWN 0 NA
上述信息表示，Ten-GigabitEthernet1/0/1接口Down时，在Smart Link组1中，Device A的Ten-GigabitEthernet1/0/2负责转发VLAN 10的流量；在Smart Link组2中，Device A的Ten-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 : Ten-GigabitEthernet1/0/2
Receiving time of the last flush packet : 16:43:08 2014/10/29
Device ID of the last flush packet : 0000-fc00-2500
Control VLAN of the last flush packet : 10
· 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 Ten-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 Ten-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 Ten-GigabitEthernet1/0/3
port link-mode bridge
port access vlan 10
#
interface Ten-GigabitEthernet1/0/4
port link-mode bridge
port access vlan 11
#
· Device B：
#
vlan 1
#
vlan 10 to 11
#
interface Ten-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 Ten-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 Ten-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 Ten-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 Ten-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 Ten-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 Ten-GigabitEthernet1/0/3
port link-mode bridge
port link-type trunk
undo port trunk permit vlan 1
port trunk permit vlan 10 to 11
#
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 |
XGE1/0/1 |
10 |
Device D |
XGE1/0/1 |
11 |
|
|
XGE1/0/2 |
10 |
|
XGE1/0/2 |
10、11 |
|
|
XGE1/0/3 |
10 |
|
XGE1/0/3 |
10 |
|
Device B |
XGE1/0/1 |
11 |
Device E |
XGE1/0/1 |
10、11 |
|
|
XGE1/0/2 |
11 |
|
XGE1/0/2 |
10、11 |
|
|
XGE1/0/3 |
11 |
|
XGE1/0/3 |
10、11 |
|
Device C |
XGE1/0/1 |
10 |
|
|
|
|
|
XGE1/0/2 |
10、11 |
|
|
|
|
|
XGE1/0/3 |
11 |
|
|
|
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。
表2 适用产品及版本
|
产品 |
软件版本 |
|
S6805系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6825系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6850系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9850系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9820-64H |
Release 6710Pxx版本，Release 6715及以上版本 |
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S9820-8C |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6800系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6860系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
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S6826系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9826系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
· 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。
# 关闭端口Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/2，并配置端口为Trunk端口，允许VLAN 10流量通过，并关闭STP。
<DeviceA> system-view
[DeviceA] vlan 10 to 11
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] shutdown
[DeviceA-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceA-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10
[DeviceA-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceA-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceA-Ten-GigabitEthernet1/0/1] quit
[DeviceA] interface ten-gigabitethernet 1/0/2
[DeviceA-Ten-GigabitEthernet1/0/2] shutdown
[DeviceA-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceA-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10
[DeviceA-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceA-Ten-GigabitEthernet1/0/2] undo stp enable
[DeviceA-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-GigabitEthernet1/0/3为Access端口，允许VLAN 10流量通过。
[DeviceA] interface ten-gigabitethernet 1/0/3
[DeviceA-Ten-GigabitEthernet1/0/3] port access vlan 10
[DeviceA-Ten-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Ten-GigabitEthernet1/0/1为主端口，Ten-GigabitEthernet1/0/2为从端口。
[DeviceA-smlk-group1] port ten-gigabitethernet 1/0/1 primary
[DeviceA-smlk-group1] port ten-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Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/2。
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] undo shutdown
[DeviceA-Ten-GigabitEthernet1/0/1] quit
[DeviceA] interface ten-gigabitethernet 1/0/2
[DeviceA-Ten-GigabitEthernet1/0/2] undo shutdown
[DeviceA-Ten-GigabitEthernet1/0/2] quit
# 关闭端口Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/2，并配置端口为Trunk端口，允许VLAN 11流量通过，并关闭STP。
<DeviceB> system-view
[DeviceB] vlan 10 to 11
[DeviceB] interface ten-gigabitethernet 1/0/1
[DeviceB-Ten-GigabitEthernet1/0/1] shutdown
[DeviceB-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceB-Ten-GigabitEthernet1/0/1] port trunk permit vlan 11
[DeviceB-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceB-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceB-Ten-GigabitEthernet1/0/1] quit
[DeviceB] interface ten-gigabitethernet 1/0/2
[DeviceB-Ten-GigabitEthernet1/0/2] shutdown
[DeviceB-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceB-Ten-GigabitEthernet1/0/2] port trunk permit vlan 11
[DeviceB-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceB-Ten-GigabitEthernet1/0/2] undo stp enable
[DeviceB-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-GigabitEthernet1/0/3为Access端口，分别允许VLAN 11流量通过。
[DeviceB] interface ten-gigabitethernet 1/0/3
[DeviceB-Ten-GigabitEthernet1/0/3] port access vlan 11
[DeviceB-Ten-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Ten-GigabitEthernet1/0/1为主端口，Ten-GigabitEthernet1/0/2为从端口。
[DeviceB-smlk-group1] port ten-gigabitethernet 1/0/1 primary
[DeviceB-smlk-group1] port ten-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Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/2。
[DeviceB] interface ten-gigabitethernet 1/0/1
[DeviceB-Ten-GigabitEthernet1/0/1] undo shutdown
[DeviceB-Ten-GigabitEthernet1/0/1] quit
[DeviceB] interface ten-gigabitethernet 1/0/2
[DeviceB-Ten-GigabitEthernet1/0/2] undo shutdown
[DeviceB-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-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。
<DeviceC> system-view
[DeviceC] vlan 10 to 11
[DeviceC] interface ten-gigabitethernet 1/0/1
[DeviceC-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceC-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10
[DeviceC-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceC-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceC-Ten-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10
[DeviceC-Ten-GigabitEthernet1/0/1] quit
# 配置端口Ten-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 ten-gigabitethernet 1/0/2
[DeviceC-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceC-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceC-Ten-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-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 ten-gigabitethernet 1/0/3
[DeviceC-Ten-GigabitEthernet1/0/3] port link-type trunk
[DeviceC-Ten-GigabitEthernet1/0/3] port trunk permit vlan 11
[DeviceC-Ten-GigabitEthernet1/0/3] undo port trunk permit vlan 1
[DeviceC-Ten-GigabitEthernet1/0/3] undo stp enable
[DeviceC-Ten-GigabitEthernet1/0/3] smart-link flush enable control-vlan 11
[DeviceC-Ten-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
# Ten-GigabitEthernet1/0/2配置为上行接口，Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/3配置为下行接口。
[DeviceC-mtlk-group1] port ten-gigabitethernet 1/0/2 uplink
[DeviceC-mtlk-group1] port ten-gigabitethernet 1/0/1 downlink
[DeviceC-mtlk-group1] port ten-gigabitethernet 1/0/3 downlink
[DeviceC-mtlk-group1] quit
# 配置端口Ten-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。
<DeviceD> system-view
[DeviceD] vlan 10 to 11
[DeviceD] interface ten-gigabitethernet 1/0/1
[DeviceD-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceD-Ten-GigabitEthernet1/0/1] port trunk permit vlan 11
[DeviceD-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceD-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceD-Ten-GigabitEthernet1/0/1] smart-link flush enable control-vlan 11
[DeviceD-Ten-GigabitEthernet1/0/1] quit
# 配置端口Ten-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 ten-gigabitethernet 1/0/2
[DeviceD-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceD-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceD-Ten-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-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 ten-gigabitethernet 1/0/3
[DeviceD-Ten-GigabitEthernet1/0/3] port link-type trunk
[DeviceD-Ten-GigabitEthernet1/0/3] port trunk permit vlan 10
[DeviceD-Ten-GigabitEthernet1/0/3] undo port trunk permit vlan 1
[DeviceD-Ten-GigabitEthernet1/0/3] undo stp enable
[DeviceD-Ten-GigabitEthernet1/0/3] smart-link flush enable control-vlan 10
[DeviceD-Ten-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
# Ten-GigabitEthernet1/0/2配置为上行接口，Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/3配置为下行接口。
[DeviceD-mtlk-group1] port ten-gigabitethernet 1/0/2 uplink
[DeviceD-mtlk-group1] port ten-gigabitethernet 1/0/1 downlink
[DeviceD-mtlk-group1] port ten-gigabitethernet 1/0/3 downlink
[DeviceD-mtlk-group1] quit
# 配置端口Ten-GigabitEthernet1/0/1、Ten-GigabitEthernet1/0/2、Ten-GigabitEthernet1/0/3为Trunk端口，允许VLAN 10、VLAN 11的流量通过；Ten-GigabitEthernet1/0/1、Ten-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。
<DeviceE> system-view
[DeviceE] vlan 10 to 11
[DeviceE] interface ten-gigabitethernet 1/0/1
[DeviceE-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceE-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10 11
[DeviceE-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceE-Ten-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11
[DeviceE-Ten-GigabitEthernet1/0/1] quit
[DeviceE] interface ten-gigabitethernet 1/0/2
[DeviceE-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceE-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceE-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceE-Ten-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11
[DeviceE-Ten-GigabitEthernet1/0/2] quit
[DeviceE] interface ten-gigabitethernet 1/0/3
[DeviceE-Ten-GigabitEthernet1/0/3] port link-type trunk
[DeviceE-Ten-GigabitEthernet1/0/3] port trunk permit vlan 10 11
[DeviceE-Ten-GigabitEthernet1/0/3] undo port trunk permit vlan 1
[DeviceE-Ten-GigabitEthernet1/0/3] quit
(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
-----------------------------------------------------------------------------
XGE1/0/1 PRIMARY ACTIVE 1 17:37:49 2014/12/29
XGE1/0/2 SECONDARY STANDBY 3 17:43:06 2014/12/29
# 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
-----------------------------------------------------------------------------
XGE1/0/1 PRIMARY ACTIVE 2 17:22:40 2014/12/29
XGE1/0/2 SECONDARY STANDBY 0 NA
上述信息表示，在Device A设备的Smart Link组1中，Device A的Ten-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Ten-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 2014/12/29
Last-down-time : -
Up-port-threshold: 1
Member Role Status
--------------------------------------------
XGE1/0/2 UPLINK UP
XGE1/0/1 DOWNLINK UP
XGE1/0/3 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 2014/12/29
Last-down-time : -
Up-port-threshold: 1
Member Role Status
--------------------------------------------
XGE1/0/2 UPLINK UP
XGE1/0/1 DOWNLINK UP
XGE1/0/3 DOWNLINK UP
上述信息表示，Device C设备的Monitor Link 1中，Ten-GigabitEthernet1/0/2为上行接口，Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/3为下行接口；Device D设备的Monitor Link 2中，Ten-GigabitEthernet1/0/2为上行接口，Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet1/0/3为下行接口。
(3) 当Device A的Ten-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
-----------------------------------------------------------------------------
XGE1/0/1 PRIMARY DOWN 1 17:37:49 2014/12/29
XGE1/0/2 SECONDAR ACTIVE 4 17:49:06 2014/12/29
上述信息表示，Device A的Ten-GigabitEthernet1/0/1接口Down时，在Smart Link组1中， Ten-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 : Ten-GigabitEthernet1/0/2
Receiving time of the last flush packet : 17:49:08 2014/12/29
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Ten-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 2014/12/29
Last-down-time : 18:01:05 2014/12/29
Up-port-threshold: 1
Member Role Status
--------------------------------------------
XGE1/0/2 UPLINK DOWN
XGE1/0/1 DOWNLINK DOWN
XGE1/0/3 DOWNLINK DOWN
# 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 2014/12/29
Last-down-time : -
Up-port-threshold: 1
Member Role Status
--------------------------------------------
XGE1/0/2 UPLINK UP
XGE1/0/1 DOWNLINK UP
XGE1/0/3 DOWNLINK UP
上述信息表示，Device C设备的Ten-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
-----------------------------------------------------------------------------
XGE1/0/1 PRIMARY DOWN 2 17:57:49 2014/12/29
XGE1/0/2 SECONDAR ACTIVE 5 18:01:06 2014/12/29
上述信息表示，Device A的Ten-GigabitEthernet1/0/1状态也变为Down，在Smart Link组1中， Ten-GigabitEthernet1/0/2负责转发VLAN 10的流量。
· 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 Ten-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 Ten-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 Ten-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 Ten-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 Ten-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 Ten-GigabitEthernet1/0/3
port link-mode bridge
port access vlan 11
#
· Device C：
#
vlan 1
#
vlan 10 to 11
#
monitor-link group 1
#
interface Ten-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 Ten-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 Ten-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 Ten-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 Ten-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 Ten-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 Ten-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 Ten-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 Ten-GigabitEthernet1/0/3
port link-mode bridge
port link-type trunk
undo port trunk permit vlan 1
port trunk permit vlan 10 to 11
#
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 |
XGE1/0/1 |
10、11 |
Device B |
XGE2/0/1 |
10、11 |
|
|
XGE1/0/3 |
10 |
|
XGE2/0/3 |
11 |
|
Device C |
XGE1/0/1 |
10、11 |
Device D |
XGE1/0/1 |
10、11 |
|
|
XGE1/0/2 |
10、11 |
|
XGE1/0/2 |
10、11 |
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Ten-GigabitEthernet1/0/1端口需要使能接收Flush报文功能。
表3 适用产品及版本
|
产品 |
软件版本 |
|
S6805系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6825系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6850系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9850系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9820-64H |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9820-8C |
不支持 |
|
S6800系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6860系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S6826系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
|
S9826系列 |
Release 6710Pxx版本，Release 6715及以上版本 |
· 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”。
# 配置IRF端口1/2，并将它与物理端口Ten-GigabitEthernet1/0/2绑定，并保存配置。
[DeviceA] interface ten-gigabitethernet 1/0/2
[DeviceA-Ten-GigabitEthernet1/0/2] shutdown
[DeviceA-Ten-GigabitEthernet1/0/2] quit
[DeviceA] irf-port 1/2
[DeviceA-irf-port1/2] port group interface ten-gigabitethernet 1/0/2
[DeviceA-irf-port1/2] quit
[DeviceA] interface ten-gigabitethernet 1/0/2
[DeviceA-Ten-GigabitEthernet1/0/2] undo shutdown
[DeviceA-Ten-GigabitEthernet1/0/2] quit
[DeviceA] save
# 激活IRF端口下的配置。
[DeviceA] irf-port-configuration active
# 将Device B的成员编号配置为2，并重启设备使新编号生效。
<DeviceB> 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
<DeviceB> 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Ten-GigabitEthernet2/0/2绑定，并保存配置。
<DeviceB> system-view
[DeviceB] interface ten-gigabitethernet 2/0/2
[DeviceB-Ten-GigabitEthernet2/0/2] shutdown
[DeviceB-Ten-GigabitEthernet2/0/2] quit
[DeviceB] irf-port 2/1
[DeviceB-irf-port2/1] port group interface ten-gigabitethernet 2/0/2
[DeviceB-irf-port2/1] quit
[DeviceB] interface ten-gigabitethernet 2/0/2
[DeviceB-Ten-GigabitEthernet2/0/2] undo shutdown
[DeviceB-Ten-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。
# 关闭端口Ten-GigabitEthernet1/0/1和Ten-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。
<DeviceA> system-view
[DeviceA] vlan 10 to 11
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] shutdown
[DeviceA-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceA-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10 11
[DeviceA-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceA-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceA-Ten-GigabitEthernet1/0/1] quit
[DeviceA] interface ten-gigabitethernet 2/0/1
[DeviceA-Ten-GigabitEthernet2/0/1] shutdown
[DeviceA-Ten-GigabitEthernet2/0/1] port link-type trunk
[DeviceA-Ten-GigabitEthernet2/0/1] port trunk permit vlan 10 11
[DeviceA-Ten-GigabitEthernet2/0/1] undo port trunk permit vlan 1
[DeviceA-Ten-GigabitEthernet2/0/1] undo stp enable
[DeviceA-Ten-GigabitEthernet2/0/1] quit
# 配置端口Ten-GigabitEthernet1/0/3为Access端口，允许VLAN 10流量通过。
[DeviceA] interface ten-gigabitethernet 1/0/3
[DeviceA-Ten-GigabitEthernet1/0/3] port access vlan 10
[DeviceA-Ten-GigabitEthernet1/0/3] quit
# 配置端口Ten-GigabitEthernet2/0/3为Access端口，允许VLAN 11流量通过。
[DeviceA] interface ten-gigabitethernet 2/0/3
[DeviceA-Ten-GigabitEthernet2/0/3] port access vlan 11
[DeviceA-Ten-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Ten-GigabitEthernet1/0/1为主端口，Ten-GigabitEthernet2/0/1为从端口。
[DeviceA-smlk-group1] port ten-gigabitethernet 1/0/1 primary
[DeviceA-smlk-group1] port ten-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Ten-GigabitEthernet1/0/1和Ten-GigabitEthernet2/0/1。
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] undo shutdown
[DeviceA-Ten-GigabitEthernet1/0/1] quit
[DeviceA] interface ten-gigabitethernet 2/0/1
[DeviceA-Ten-GigabitEthernet2/0/1] undo shutdown
[DeviceA-Ten-GigabitEthernet2/0/1] quit
# 配置端口Ten-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。
<DeviceC> system-view
[DeviceC] vlan 10 to 11
[DeviceC] interface ten-gigabitethernet 1/0/1
[DeviceC-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceC-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceC-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceC-Ten-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/1] quit
# 配置端口Ten-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 ten-gigabitethernet 1/0/2
[DeviceC-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceC-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceC-Ten-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11
[DeviceC-Ten-GigabitEthernet1/0/2] quit
# 配置端口Ten-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。
<DeviceD> system-view
[DeviceD] vlan 10 to 11
[DeviceD] interface ten-gigabitethernet 1/0/1
[DeviceD-Ten-GigabitEthernet1/0/1] port link-type trunk
[DeviceD-Ten-GigabitEthernet1/0/1] port trunk permit vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1
[DeviceD-Ten-GigabitEthernet1/0/1] undo stp enable
[DeviceD-Ten-GigabitEthernet1/0/1] smart-link flush enable control-vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/1] quit
# 配置端口Ten-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 ten-gigabitethernet 1/0/2
[DeviceD-Ten-GigabitEthernet1/0/2] port link-type trunk
[DeviceD-Ten-GigabitEthernet1/0/2] port trunk permit vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1
[DeviceD-Ten-GigabitEthernet1/0/2] smart-link flush enable control-vlan 10 11
[DeviceD-Ten-GigabitEthernet1/0/2] quit
(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。
<Sysname> 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
IRF mode : normal
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
-----------------------------------------------------------------------------
XGE1/0/1 PRIMARY ACTIVE 3 18:16:44 2014/12/29
XGE2/0/1 SECONDARY STANDBY 0 NA
上述信息表示，在Smart Link组1中，Device A的Ten-GigabitEthernet1/0/1是主端口，负责转发VLAN 10和VLAN 11的流量，Device B的Ten-GigabitEthernet2/0/1是从端口，作为备份端口。
(3) 当Device A的Ten-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
-----------------------------------------------------------------------------
XGE1/0/1 PRIMARY DOWN 3 18:16:44 2014/12/29
XGE2/0/1 SECONDARY ACTIVE 1 18:22:37 2014/12/29
上述信息表示，Device A的Ten-GigabitEthernet1/0/1接口Down时，在Smart Link组1中，Device B的Ten-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 : Ten-GigabitEthernet1/0/3
Receiving time of the last flush packet : 18:22:39 2014/12/29
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 : Ten-GigabitEthernet1/0/1
Receiving time of the last flush packet : 18:22:38 2014/12/29
Device ID of the last flush packet : 00e0-fc00-c518
Control VLAN of the last flush packet : 10
· Device A
#
sysname DeviceA
#
vlan 10 to 11
#
irf mac-address persistent always
irf auto-update enable
irf auto-merge enable
undo irf link-delay
irf member 1 priority 1
irf member 2 priority 1
#
irf-port 1/2
port group interface Ten-GigabitEthernet1/0/2
#
irf-port 2/1
port group 1 interface Ten-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 Ten-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 Ten-GigabitEthernet1/0/3
port link-mode bridge
port access vlan 10
#
interface Ten-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 Ten-GigabitEthernet2/0/3
port link-mode bridge
port access vlan 11
#
· Device C
#
sysname DeviceC
#
vlan 10 to 11
#
interface Ten-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 Ten-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 Ten-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 Ten-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
#
请参考对应产品和版本的如下手册：
· 二层技术-以太网交换配置指导
· 二层技术-以太网交换命令参考
· 可靠性配置指导
· 可靠性命令参考
· 虚拟化技术配置指导
· 虚拟化技术命令参考
不同款型规格的资料略有差异, 详细信息请向具体销售和400咨询。H3C保留在没有任何通知或提示的情况下对资料内容进行修改的权利!
支持
