Configuring An Mvrrp Backup Group To Track The Bfd Session Status - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
VRRP packets. Alternatively, it implements its state machine by directly copying the status of
the mVRRP back group. A service VRRP backup group can be bound to only one mVRRP
backup group.
Only a single member VRRP backup group can be configured on a single interface.
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4.5.3 Configuring an mVRRP Backup Group to Track the BFD
Session Status
By tracking the status of a BFD session, a VRRP backup group can perform the fast VRRP
switchover when the BFD session status changes.
Context
Do as follows on a router that needs the fast VRRP switchover:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface
The view of the interface configured with VRRP backup group is displayed.
Step 3 Run the following commands are required:
l Run:
Issue 02 (2011-09-10)
NOTE
NOTE
l When configuring a fast VRRP switchover, if VRRP monitors the peer BFD session, you must
configure peer BFD sessions on both the master router and the backup router. Otherwise, VRRP
flapping occurs.
l When a VRRP backup group is bound to the mVRRP backup group, the VRRP backup group cannot
perform the fast switchover bytracking any BFD session, and the status of the VRRP backup group
should be consistent with the status of the mVRRP backup group.
l When configuring a VRRP backup group to track the status of a BFD session, note the following points:
l If the parameter session-name bfd-configure-name is specified, the VRRP backup group can track
the status of only static BFD sessions with automatically negotiated discriminators.
l If the parameter session-id is specified, the VRRP backup group can track the status of only static
BFD sessions.
interface-type interface-number[.subinterface-number ]
vrrp vrid virtual-router-id track bfd-session { bfd-session-id | session-name
bfd-configure-name } [ increased value-increased | reduced value-reduced ]
The normal BFD session is tracked.
increased value-increased: specifies the value by which the priority increases each time the
tracked BFD session goes Down. The value ranges from 1 to 255. The maximum value of
the priority is 254. The value takes effect only when the status of the VRRP backup group
is Backup.
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