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配置Smart Link负载分担示例
更新时间：2022-09-07
组网需求
如图1所示，为了保证网络的可靠性，用户侧网络采用双上行方式组网。由于组网上存在多个VLAN的数据流量，为使链路得到充分利用，用户希望两条上行链路均进行数据流量的转发。组网要求业务中断时间控制在毫秒级。
图1 配置Smart Link负载分担示例
配置思路
采用如下的思路配置Smart Link功能：
在SwitchA上进行配置，将需要进行负载分担的VLAN 500映射到实例10。
在SwitchA上配置Smart Link组，将对应接口加入Smart Link组中。
在SwitchA上配置负载分担功能，实例10映射的VLAN数据从备份链路进行转发。
在SwitchA上使能回切功能，使得故障恢复后，流量切换到相对稳定的原主链路上。
在SwitchA上使能发送Flush报文功能。
在SwitchB、SwitchC和SwitchD三台设备对应接口上使能Flush报文接收功能。
在SwitchA上使能Smart Link组功能。
操作步骤
配置VLAN信息
# 在SwitchA上创建VLAN，并配置接口允许相应VLAN通过。SwitchB、SwitchC和SwitchD的配置与SwitchA相似，详见配置文件。
<Quidway> system-view
[Quidway] sysname SwitchA
[SwitchA] vlan batch 10 100 500
[SwitchA] interface gigabitethernet 1/0/1
[SwitchA-GigabitEthernet1/0/1] port link-type trunk
[SwitchA-GigabitEthernet1/0/1] port trunk allow-pass vlan 10 100 500
[SwitchA-GigabitEthernet1/0/1] quit
[SwitchA] interface gigabitethernet 1/0/2
[SwitchA-GigabitEthernet1/0/2] port link-type trunk
[SwitchA-GigabitEthernet1/0/2] port trunk allow-pass vlan 10 100 500
[SwitchA-GigabitEthernet1/0/2] quit
在SwitchA上配置VLAN映射
3. [SwitchA] stp region-configuration
4. [SwitchA-mst-region] instance 10 vlan 500
5. [SwitchA-mst-region] active region-configuration
6. [SwitchA-mst-region] quit
将去使能STP功能的上行接口加入Smart Link组并指定为主接口或从接口
# 配置SwitchA
[SwitchA] interface gigabitethernet 1/0/1
[SwitchA-GigabitEthernet1/0/1] stp disable
[SwitchA-GigabitEthernet1/0/1] quit
[SwitchA] interface gigabitethernet 1/0/2
[SwitchA-GigabitEthernet1/0/2] stp disable
[SwitchA-GigabitEthernet1/0/2] quit
[SwitchA] smart-link group 1
[SwitchA-smlk-group1] port gigabitethernet 1/0/1 master
[SwitchA-smlk-group1] port gigabitethernet 1/0/2 slave
在SwitchA上配置负载分担功能
9. [SwitchA-smlk-group1] load-balance instance 10 slave
使能回切功能并设置回切时间
# 配置SwitchA。
[SwitchA-smlk-group1] restore enable
[SwitchA-smlk-group1] timer wtr 30
使能发送Flush报文功能
# 配置SwitchA，并指定发送Flush报文的密码为SHA加密方式。
[SwitchA-smlk-group1] flush send control-vlan 10 password sha 123
使能接收Flush报文功能
# 配置SwitchB，并指定接收Flush报文的密码为SHA加密方式。
[SwitchB] interface gigabitethernet 1/0/1
[SwitchB-GigabitEthernet1/0/1] smart-link flush receive control-vlan 10 password sha 123
[SwitchB-GigabitEthernet1/0/1] quit
[SwitchB] interface gigabitethernet 1/0/2
[SwitchB-GigabitEthernet1/0/2] smart-link flush receive control-vlan 10 password sha 123
[SwitchB-GigabitEthernet1/0/2] quit
# 配置SwitchC，并指定接收Flush报文的密码为SHA加密方式。
[SwitchC] interface gigabitethernet 1/0/1
[SwitchC-GigabitEthernet1/0/1] smart-link flush receive control-vlan 10 password sha 123
[SwitchC-GigabitEthernet1/0/1] quit
[SwitchC] interface gigabitethernet 1/0/2
[SwitchC-GigabitEthernet1/0/2] smart-link flush receive control-vlan 10 password sha 123
[SwitchC-GigabitEthernet1/0/2] quit
# 配置SwitchD，并指定接收Flush报文的密码为SHA加密方式。
[SwitchD] interface gigabitethernet 1/0/1
[SwitchD-GigabitEthernet1/0/1] smart-link flush receive control-vlan 10 password sha 123
[SwitchD-GigabitEthernet1/0/1] quit
[SwitchD] interface gigabitethernet 1/0/2
[SwitchD-GigabitEthernet1/0/2] smart-link flush receive control-vlan 10 password sha 123
[SwitchD-GigabitEthernet1/0/2] quit
在SwitchA使能Smart Link组功能
14.[SwitchA-smlk-group1] smart-link enable
[SwitchA-smlk-group1] quit
验证配置结果
# 使用display smart-link group命令查看SwitchA上的Smart Link组信息。如果显示如下信息，则表示配置成功。
Smart Link组功能已经使能
回切时间为30秒
控制VLAN编号为10
接口GE1/0/1为主接口且处于Active状态，接口GE1/0/2为从接口且处于Inactive，并且配置了负载分担功能。
[SwitchA] display smart-link group 1
Smart Link group 1 information :
Smart Link group was enabled
Wtr-time is: 30 sec.
Load-Balance Instance: 10
There is no protected-vlan reference-instance
DeviceID: 0018-2000-0083 Control-vlan ID: 10
Member Role State Flush Count Last-Flush-Time
----------------------------------------------------------------------
GigabitEthernet1/0/1 Master Active 1 2009/01/05 10:33:46 UTC+05:00
GigabitEthernet1/0/2 Slave Inactive 0 0000/00/00 00:00:00 UTC+05:00
# 使用shutdown命令关闭接口GE1/0/1，可以看到接口GE1/0/1已经处于Inactive状态，接口GE1/0/2为Active状态。
[SwitchA] interface gigabitethernet 1/0/1
[SwitchA-GigabitEthernet1/0/1] shutdown
[SwitchA-GigabitEthernet1/0/1] display smart-link group 1
Smart Link group 1 information :
Smart Link group was enabled
Wtr-time is: 30 sec.
Load-Balance Instance: 10
There is no protected-vlan reference-instance
DeviceID: 0018-2000-0083 Control-vlan ID: 10
Member Role State Flush Count Last-Flush-Time
----------------------------------------------------------------------
GigabitEthernet1/0/1 Master Inactive 1 2009/01/05 10:33:46 UTC+05:00
GigabitEthernet1/0/2 Slave Active 1 2009/01/05 10:34:46 UTC+05:00
# 使用undo shutdown命令开启接口GE1/0/1。
[SwitchA-GigabitEthernet1/0/1] undo shutdown
# 等待30秒后，可以看到接口GE1/0/1处于Active状态，接口GE1/0/2为Inactive状态。
[SwitchA-GigabitEthernet1/0/1] display smart-link group 1
Smart Link group 1 information :
Smart Link group was enabled
Wtr-time is: 30 sec.
Load-Balance Instance: 10
There is no protected-vlan reference-instance
DeviceID: 0018-2000-0083 Control-vlan ID: 10
Member Role State Flush Count Last-Flush-Time
----------------------------------------------------------------------
GigabitEthernet1/0/1 Master Active 2 2009/01/05 10:35:46 UTC+05:00
GigabitEthernet1/0/2 Slave Inactive 1 2009/01/05 10:34:46 UTC+05:00
配置文件
SwitchA的配置文件
· #
· sysname SwitchA
· #
· vlan batch 10 100 500
· #
· stp region-configuration
· instance 10 vlan 500
· active region-configuration
· #
· interface GigabitEthernet1/0/1
· port link-type trunk
· port trunk allow-pass vlan 10 100 500
· stp disable
· #
· interface GigabitEthernet1/0/2
· port link-type trunk
· port trunk allow-pass vlan 10 100 500
· stp disable
· #
· smart-link group 1
· load-balance instance 10 slave
· restore enable
· smart-link enable
· port GigabitEthernet1/0/1 master
· port GigabitEthernet1/0/2 slave
· timer wtr 30
· flush send control-vlan 10 password sha %^%#rwIhOw`~g7,xyl>~|:v9Cyw2CH,7l2dbzA[cH3YA9BdA;1qqSs%WJHM3|hO%^%#
· #
return
SwitchB的配置文件
· #
· sysname SwitchB
· #
· vlan batch 10 100 500
· #
· interface GigabitEthernet1/0/1
· port link-type trunk
· port trunk allow-pass vlan 10 100 500
· smart-link flush receive control-vlan 10 password sha %^%#fR)IGHHT:>]iNbG:Nq#)<^1p#`np!T#/V&%)iHB_ibX!99]e#E{/L2Sxw!I%^%#
· #
· interface GigabitEthernet1/0/2
· port link-type trunk
· port trunk allow-pass vlan 10 100 500
· smart-link flush receive control-vlan 10 password sha %^%#XbPxG#g5C6$/*d2^GRU>3ODTJF_C(Bht`^*}tT05u]7SIZ5y%9bQ!x~3:v;O%^%#
· #
return
SwitchC的配置文件
· #
· sysname SwitchC
· #
· vlan batch 10 100 500
· #
· interface GigabitEthernet1/0/1
· port link-type trunk
· port trunk allow-pass vlan 10 100 500
· smart-link flush receive control-vlan 10 password sha %^%#IOf[Q`=F=QK"O4-j9A}Y-N7<,F~cn%/NR:G-,L5*[SMN,FlIYAZd88*ObE;T%^%#
· #
· interface GigabitEthernet1/0/2
· port link-type trunk
· port trunk allow-pass vlan 10 100 500
· smart-link flush receive control-vlan 10 password sha %^%#vMK'GvJozEo1Fi:%~jkO<ge&0HgYZVh@ch709e49'r8&M{k6X.NzX)<K_R<P%^%#
· #
return
SwitchD的配置文件
· #
· sysname SwitchD
· #
· vlan batch 10 100 500
· #
· interface GigabitEthernet1/0/1
· port link-type trunk
· port trunk allow-pass vlan 10 100 500
· smart-link flush receive control-vlan 10 password sha %^%#:ssvXl%=T&UGOl$eoPWJaQ'>)@+TbEELAQM=7sh~J1>;>,H<HIEjK$@kW1B1%^%#
· #
· interface GigabitEthernet1/0/2
· port link-type trunk
· port trunk allow-pass vlan 10 100 500
· smart-link flush receive control-vlan 10 password sha %^%#i~K431w:TERjN]OK0kS+Y*VB=*-BP2+X33UoHVG#{<qPBD:s1.~,2h/s($&%^%#
· #
return