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Smart Link#xff0c;又叫做备份链路。一个Smart Link由两个接口组成#xff0c;其中一个接口作为另一个的备份。Smart Link常用于双上行组网#xff0c;提供可靠高效的备份和快速的切换机制。
目的
下游设备连接到上游设备#xff0c;当使用单上行方式时#x…定义
Smart Link又叫做备份链路。一个Smart Link由两个接口组成其中一个接口作为另一个的备份。Smart Link常用于双上行组网提供可靠高效的备份和快速的切换机制。
目的
下游设备连接到上游设备当使用单上行方式时若出现单点故障会造成业务中断。若采用双上行方式将一台下游设备同时连接到两台上游设备可降低单点故障对网络的影响提高了可靠性。
组网需求
如下图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。 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
1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。
Huaweisystem-view
[Huawei]sysname SwitchA
[SwitchA]vlan batch 10 100 500
[SwitchA]interface GigabitEthernet 0/0/1
[SwitchA-GigabitEthernet0/0/1]port link-type trunk
[SwitchA-GigabitEthernet0/0/1]port trunk allow-pass vlan 10 100 500
[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 10 100 500
[SwitchA-GigabitEthernet0/0/2]quit2在SwitchA上配置VLAN映射
[SwitchA]stp region-configuration
[SwitchA-mst-region]instance 10 vlan 500
[SwitchA-mst-region]active region-configuration
[SwitchA-mst-region]quit3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 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 4在SwitchA上配置负载分担功能
[SwitchA-smlk-group1]load-balance instance 10 slave
5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
6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 simple huawei-123
7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
simple huawei-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
simple huawei-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
simple huawei-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
simple huawei-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
simple huawei-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
simple huawei-123
[SwitchD-GigabitEthernet0/0/2]stp disable
[SwitchD-GigabitEthernet0/0/2]quit
8在SwitchA使能Smart Link组功能
[SwitchA-smlk-group1]smart-link enable
[SwitchA-smlk-group1]quit
9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 enabledWtr-time is: 30 sec.Load-Balance Instance: 10 There is no protected-vlan reference-instanceDeviceID: 4c1f-cc8e-66bb Control-vlan ID: 10Member Role State Flush Count Last-Flush-Time----------------------------------------------------------------------GigabitEthernet0/0/1 Master Active 1 2023/12/07 15:57:28 UTC-08
:00 GigabitEthernet0/0/2 Slave Inactive 0 0000/00/00 00:00:00 UTC00
: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 enabledWtr-time is: 30 sec.Load-Balance Instance: 10 There is no protected-vlan reference-instanceDeviceID: 4c1f-cc8e-66bb Control-vlan ID: 10Member Role State Flush Count Last-Flush-Time----------------------------------------------------------------------GigabitEthernet0/0/1 Master Inactive 1 2023/12/07 15:57:28 UTC-08
:00 GigabitEthernet0/0/2 Slave Active 0 0000/00/00 00:00:00 UTC00
: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 enabledWtr-time is: 30 sec.Load-Balance Instance: 10 There is no protected-vlan reference-instanceDeviceID: 4c1f-cc8e-66bb Control-vlan ID: 10Member Role State Flush Count Last-Flush-Time----------------------------------------------------------------------GigabitEthernet0/0/1 Master Active 2 2023/12/07 16:03:41 UTC-08
:00 GigabitEthernet0/0/2 Slave Inactive 0 0000/00/00 00:00:00 UTC00
:00 # 假设PC1所属的VLAN为VLAN100PC2所属的VLAN为VLAN500PC1和PC2都能访问Internet。
配置文件 SwitchA的配置文件
#
sysname SwitchA
#
vlan batch 10 100 500
#
stp region-configurationinstance 10 vlan 500active region-configuration
#
interface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 10 100 500stp disable
#
interface GigabitEthernet0/0/2port link-type trunkport trunk allow-pass vlan 10 100 500stp disable
#
smart-link group 1load-balance instance 10 slaverestore enablesmart-link enableport GigabitEthernet0/0/1 masterport GigabitEthernet0/0/2 slavetimer wtr 30flush send control-vlan 10 password simple huawei-123
#
return SwitchB的配置文件
#
sysname SwitchB
#
vlan batch 10 100 500
#
interface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 10 100 500stp disablesmart-link flush receive control-vlan 10 password simple huawei-123
#
interface GigabitEthernet0/0/2port link-type trunkport trunk allow-pass vlan 10 100 500stp disablesmart-link flush receive control-vlan 10 password simple huawei-123
return SwitchC的配置文件
#
sysname SwitchC
#
vlan batch 10 100 500
#
interface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 10 100 500stp disablesmart-link flush receive control-vlan 10 password simple huawei-123
#
interface GigabitEthernet0/0/2port link-type trunkport trunk allow-pass vlan 10 100 500stp disablesmart-link flush receive control-vlan 10 password simple huawei-123
#
return SwitchD的配置文件
#
sysname SwitchD
#
vlan batch 10 100 500
#
interface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 10 100 500stp disablesmart-link flush receive control-vlan 10 password simple huawei-123
#
interface GigabitEthernet0/0/2port link-type trunkport trunk allow-pass vlan 10 100 500stp disablesmart-link flush receive control-vlan 10 password simple huawei-123
#
return
