H3C s7000/s7500e/10500 series post stack BFD detection configuration method

1 Configuration requirements or instructions
1.1 Applicable product range
This case is applicable to S7006、S7503E、S7506E、S7606、S10510、S10508 etc. S7000、S7500E、S10500 series , And the software version is V7 Switchboard

1.2 Configuration requirements and implementation effect
Core equipment Device A and Device B To configure IRF, Just in case IRF Caused by link failure IRF split 、 There are two configuration conflicts in the network IRF, You need to enable MAD Detection function , use BFD MAD Detection method to monitor IRF The state of ,IRF After the split , Through the split detection mechanism IRF It will detect that there are other problems in the network Active state , Conflict management will make Master Minimum member number IRF Continue to work normally , Other IRF Will move to Recovery state （ Express IRF In disabled state ）, And shut down Recovery state IRF All physical ports except reserved ports on all member devices in

2 Networking diagram

Configuration steps
3 Configuration steps
3.1 Switch DeviceA、B Stack configuration
For specific configuration, please refer to the example of switch virtualization configuration , There is no introduction in this chapter .

3.2 To configure BFD MAD

establish VLAN 3, And will Device A On the port GigabitEthernet1/0/1 and Device B On the port GigabitEthernet2/0/1 Join in VLAN3 in .

system-view

[DeviceA] vlan 3

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

[DeviceA-vlan3] quit

establish VLAN Interface 3, And configuration MAD IP Address .

[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

because BFD MAD And spanning tree function are mutually exclusive , So in GigabitEthernet1/0/1 and GigabitEthernet2/0/1 Close spanning tree protocol on .

[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 Save configuration
save force

3.4 Verification of experimental results
[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 Status as :Faulty State description stack split

Member ID MAD IP address Neighbor MAD status

1 192.168.2.1/24 2 Faulty

At this time to use “display interface brief down” When viewing ports, I found that all ports were closed , Status as 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 matters needing attention
1、 BFD MAD and STP Function mutually exclusive , be used for BFD MAD The detected port cannot be enabled STP function

2、 Can make BFD MAD The three-layer interface of the detection function can only be dedicated to BFD MAD testing , It is not allowed to run other businesses . If other services are configured , May affect the business and BFD MAD Operation of detection function