Huawei AR2200-S Series Configuration Manual page 19

Huawei AR2200-S Series Enterprise Routers
Configuration Guide - Reliability
2.
3.
4.
Example
Run the display standby state command to check the status of the BFD session and the backup
interface.
<Huawei> display standby state
Interface
Backup-flag meaning:
M---MAIN
D---LOAD
----------------------------------------------------------------------------
Below is track BFD information:
Bfd-Name
test
----------------------------------------------------------------------------
Below is track IP route information:
Destination/Mask
--------------------------------------------------------------------------------
Below is track NQA Information:
Instance Name
According to the preceding information, the BFD session status is OK and the status of backup
interface GigabitEthernet2/0/0 is STANDBY. The primary interface transmits services.
If the BFD session status is ERR and the status of backup interface GigabitEthernet2/0/0 is Up,
the backup interface is started. The following error message is displayed:
<Huawei> display standby state
Interface
Issue 01 (2012-01-06)
system-view
The system view is displayed.
(Optional) Run:
ip route-static ip-address { mask | mask-length } { nexthop-address | interface-
type interface-number [ nexthop-address ] } [ preference preference | tag
*
tag ] track bfd-session cfg-name [ description text ]
Association between the IPv4 static route of the primary link and a BFD session is
configured or route priorities of the primary and backup links are set.
NOTE
l If the primary and backup links use dynamic routes, skip 2.
l If the primary and backup links use static routes, perform
set the route of the backup link to have a higher priority than the route of the primary link.
Run:
interface interface-type interface-number
The view of the backup interface is displayed.
Run:
standby track bfd-session session-name session-name
Association between interface backup and BFD is configured.
NOTE
A backup interface can associate with only one BFD session, while a BFD session can associate with
multiple backup interfaces.
B---BACKUP
P---PULLED
Bfd-State
OK
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Interfacestate Backupstate Backupflag Pri
V---MOVED U---USED
BackupInterface
GigabitEthernet2/0/0
Route-State BackupInterface
BackupInterface
Interfacestate Backupstate Backupflag Pri
1 Interface Backup Configuration
2 to configure BFD for static routes or
Loadstate
State
STANDBY
State
State
Loadstate
11