配置smart-link主备备份

Tree Hole

2022-4-14

路由交换

组网需求

如图一所示，为了保证网络的可靠性，用户侧网络采用双上行方式组网。用户希望能够破除网络环路，实现主备链路冗余备份和快速收敛。

图1 配置Smart Link主备备份示例

配置思路

采用如下的思路配置Smart Link功能：

创建VLAN，并配置接口允许相应VLAN通过。
在SwitchA上创建Smart Link备份组，并指定端口角色。
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三台设备对应端口上使能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类似，详见配置文件。

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] vlan batch 10 to 30 
[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] port link-type trunk
[SwitchA-GigabitEthernet0/0/1] port trunk allow-pass vlan 10 to 30
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] port link-type trunk
[SwitchA-GigabitEthernet0/0/2] port trunk allow-pass vlan 10 to 30
[SwitchA-GigabitEthernet0/0/2] quit

在SwitchA上创建Smart Link备份组，并指定端口角色# 配置SwitchA

[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] stp disable
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] stp disable
[SwitchA-GigabitEthernet0/0/2] quit
[SwitchA] smart-link group 1
[SwitchA-smlk-group1] port gigabitethernet 0/0/1 master
[SwitchA-smlk-group1] port gigabitethernet 0/0/2 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 0/0/1
[SwitchB-GigabitEthernet0/0/1] smart-link flush receive control-vlan 10 password sha 123
[SwitchB-GigabitEthernet0/0/1] stp disable
[SwitchB-GigabitEthernet0/0/1] quit
[SwitchB] interface gigabitethernet 0/0/2
[SwitchB-GigabitEthernet0/0/2] smart-link flush receive control-vlan 10 password sha 123
[SwitchB-GigabitEthernet0/0/2] stp disable
[SwitchB-GigabitEthernet0/0/2] quit

# 配置SwitchC，并指定接收Flush报文的密码为SHA加密方式。

[SwitchC] interface gigabitethernet 0/0/1
[SwitchC-GigabitEthernet0/0/1] smart-link flush receive control-vlan 10 password sha 123
[SwitchC-GigabitEthernet0/0/1] stp disable
[SwitchC-GigabitEthernet0/0/1] quit
[SwitchC] interface gigabitethernet 0/0/2
[SwitchC-GigabitEthernet0/0/2] smart-link flush receive control-vlan 10 password sha 123
[SwitchC-GigabitEthernet0/0/2] stp disable
[SwitchC-GigabitEthernet0/0/2] quit

# 配置SwitchD，并指定接收Flush报文的密码为SHA加密方式。

[SwitchD] interface gigabitethernet 0/0/1
[SwitchD-GigabitEthernet0/0/1] smart-link flush receive control-vlan 10 password sha 123
[SwitchD-GigabitEthernet0/0/1] stp disable
[SwitchD-GigabitEthernet0/0/1] quit
[SwitchD] interface gigabitethernet 0/0/2
[SwitchD-GigabitEthernet0/0/2] smart-link flush receive control-vlan 10 password sha 123
[SwitchD-GigabitEthernet0/0/2] stp disable
[SwitchD-GigabitEthernet0/0/2] quit

在SwitchA使能Smart Link组功能

[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GE0/0/1为主接口且处于Active状态，接口GE0/0/2为从接口且处于Inactive。

[SwitchA] display smart-link group 1
Smart Link group 1 information :
  Smart Link group was enabled
  Wtr-time is: 30 sec.
  There is no Load-Balance
  There is no protected-vlan reference-instance
  DeviceID: 0018-2000-0083  Control-vlan ID: 10
  Member                  Role    State      Flush Count  Last-Flush-Time
  ----------------------------------------------------------------------

  GigabitEthernet0/0/1    Master  Active    1            2009/01/05 10:33:46 UTC+05:00
  GigabitEthernet0/0/2    Slave   Inactive  0            0000/00/00 00:00:00 UTC+05:00

# 使用shutdown命令关闭接口GE0/0/1，可以看到接口GE0/0/1已经处于Inactive状态，接口GE0/0/2为Active状态。

[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] shutdown

[SwitchA-GigabitEthernet0/0/1] display smart-link group 1
Smart Link group 1 information :
  Smart Link group was enabled
  Wtr-time is: 30 sec.
  There is no Load-Balance
  There is no protected-vlan reference-instance 
  DeviceID: 0018-2000-0083  Control-vlan ID: 10
  Member                  Role    State      Flush Count  Last-Flush-Time
  ----------------------------------------------------------------------

  GigabitEthernet0/0/1    Master  Inactive  1            2009/01/05 10:33:46 UTC+05:00
  GigabitEthernet0/0/2    Slave   Active    1            2009/01/05 10:34:46 UTC+05:00

# 使用undo shutdown命令开启接口GE0/0/1。

[SwitchA-GigabitEthernet0/0/1] undo shutdown

# 等待30秒后，可以看到接口GE0/0/1处于Active状态，接口GE0/0/2为Inactive状态。

[SwitchA-GigabitEthernet0/0/1] display smart-link group 1
Smart Link group 1 information :
  Smart Link group was enabled
  Wtr-time is: 30 sec.
  There is no Load-Balance
  There is no protected-vlan reference-instance 
  DeviceID: 0018-2000-0083  Control-vlan ID: 10
  Member                  Role    State      Flush Count  Last-Flush-Time
  ----------------------------------------------------------------------

  GigabitEthernet0/0/1    Master  Active    2            2009/01/05 10:35:46 UTC+05:00
  GigabitEthernet0/0/2    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 to 30
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10 to 30
 stp disable
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10 to 30
 stp disable
#
smart-link group 1
 restore enable
 smart-link enable
 port GigabitEthernet0/0/1 master
 port GigabitEthernet0/0/2 slave
 timer wtr 30
 flush send control-vlan 10 password sha %#%#rwIhOw`~g7,xyl>~|:v9Cyw2CH,7l2\dbzA[cH3YA9BdA;1qqSs%WJHM3|hO%#%#
#
return

SwitchB的配置文件

#
sysname SwitchB
#
vlan batch 10 to 30
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10 to 30
 stp disable
 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 GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10 to 30
 stp disable
 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 to 30
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10 to 30
 stp disable
 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 GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10 to 30
 stp disable
 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 to 30
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10 to 30
 stp disable
 smart-link flush receive control-vlan 10 password sha %#%#:ssvXl%=T&UGOl$eoPWJaQ'>)@+TbEELAQM=7sh~J1>;>,H<HIEjK$@kW1B1%#%#
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10 to 30
 stp disable
 smart-link flush receive control-vlan 10 password sha %#%#i~K431w:TERjN]OK0kS+Y*VB=*-BP2+X33UoHVG#{<qPBD:s1.~,2h/s($\&%#%#
#
return

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