H3CS7000/S7500E/10500系列堆叠后BFD检测配置方法

1 配置需求或说明
1.1 适用产品系列
本案例适用于如S7006、S7503E、S7506E、S7606、S10510、S10508等S7000、S7500E、S10500系列&＃xff0c;且软件版本是V7的交换机

1.2 配置需求及实现的效果
核心设备Device A和Device B配置IRF&＃xff0c;为了防止万一IRF链路故障导致IRF分裂、网络中存在两个配置冲突的IRF&＃xff0c;需要启用MAD检测功能&＃xff0c;采用BFD MAD检测方式来监测IRF的状态&＃xff0c;IRF分裂后&＃xff0c;通过分裂检测机制IRF会检测到网络中存在其它处于Active状态&＃xff0c;冲突处理会让Master成员编号最小的IRF继续正常工作&＃xff0c;其它IRF会迁移到Recovery状态&＃xff08;表示IRF处于禁用状态&＃xff09;&＃xff0c;并关闭Recovery状态IRF中所有成员设备上除保留端口以外的其它所有物理端口

2 组网图

配置步骤
3 配置步骤
3.1 交换机DeviceA、B堆叠配置
具体配置可参考交换机虚拟化配置举例&＃xff0c;本章不做介绍。

3.2 配置BFD MAD

system-view

[DeviceA] vlan 3

[DeviceA-vlan3] port gigabitethernet 1/0/1 gigabitethernet 2/0/1

[DeviceA-vlan3] quit

[DeviceA] interface vlan-interface 3

[DeviceA-Vlan-interface3] mad bfd enable

[DeviceA-Vlan-interface3] mad ip address 192.168.2.1 24 member 1

[DeviceA-Vlan-interface3] mad ip address 192.168.2.2 24 member 2

[DeviceA-Vlan-interface3] quit

[Sysname] interface gigabitethernet 1/0/1

[Sysname-gigabitethernet1/0/1] undo stp enable

[Sysname-gigabitethernet1/0/1] quit

[Sysname] interface gigabitethernet 2/0/1

[Sysname-gigabitethernet2/0/1] undo stp enable

3.3 保存配置
save force

3.4 实验结果验证
[H3C]display mad

MAD ARP disabled.

MAD ND disabled.

MAD LACP disabled.

MAD BFD enabled.

[H3C]display mad verbose

Multi-active recovery state: No

Excluded ports (user-configured):

Excluded ports (system-configured):

Ten-GigabitEthernet1/1/2

Ten-GigabitEthernet2/1/1

MAD ARP disabled.

MAD ND disabled.

MAD LACP disabled.

MAD BFD enabled interface: Vlan-interface3

MAD status : Faulty \MAD状态为:Faulty状态说明堆叠分裂

Member ID MAD IP address Neighbor MAD status

1 192.168.2.1/24 2 Faulty

此时使用“display interface brief down”查看端口时发现端口全部被关闭&＃xff0c;状态为mad shutdown

display interface brief down

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE2/0/2 DOWN MAD ShutDown

GE2/0/3 DOWN MAD ShutDown

3.5 注意事项
1、 BFD MAD和STP功能互斥&＃xff0c;用于BFD MAD检测的端口不能使能STP功能

2、 使能BFD MAD检测功能的三层接口只能专用于BFD MAD检测&＃xff0c;不允许运行其它业务。如果配置了其它业务&＃xff0c;可能会影响该业务以及BFD MAD检测功能的运行