Configuration Files - H3C S12500 Configuration Examples

Protocol: ISIS
Preference: 15
NextHop: 12.12.12.2
BkNextHop: 13.13.13.2
RelyNextHop: 0.0.0.0
Tunnel ID: 0x0
State: Active Adv
# Display the status of the BFD session automatically created by FRR.
<SwitchS> display bfd session verbose
Total Session Num: 1
Session Working Under Echo Mode:
Local Discr: 16
Source IP: 12.12.12.1
Session State: Up
Min Recv Inter: 10ms
Act Detect Inter: 30ms
Connect Type: Direct
Protocol: FRR
Diag Info: No Diagnostic
When the link between Switch S and Switch A fails, BFD immediately detects the failure, and FRR
performs a link switchover. The backup next hop is used to forward packets until IS-IS completes route
convergence, ensuring service continuity.

Configuration files

Method 1:
•
#
bfd echo-source-ip 67.67.67.67
#
vlan 100
#
vlan 200
#
isis 1
is-level level-2
fast-reroute auto
network-entity 00.0000.0000.0000.0001.00
#
interface Vlan-interface100
ip address 12.12.12.1 255.255.255.0
isis enable 1
isis cost 10
bfd min-echo-receive-interval 10
Tag: 0
Process ID: 1
Cost: 20
Interface: Vlan-interface100
BkInterface: Vlan-interface200
Neighbor : 0.0.0.0
Label: NULL
Age: 00h36m27s
Init Mode: Active
Destination IP: 12.12.12.2
Interface: Vlan-interface100
Act Trans Inter: 10ms
Running Up for: 00:39:05
Board Num: 0
12