Configuring Vf Tracking - HP MSR Series Configuration Manual

Step
4. Set the interval at which the
master in an IPv4 VRRP group
sends VRRP advertisements.
5. Specify the source interface for
receiving and sending VRRP
packets.
6. Enable TTL check for IPv4 VRRP
packets.
7. Return to system view.
8. Set a DSCP value for VRRP
packets.

Configuring VF tracking

You can configure VF tracking in both standard mode and load balancing mode, but the function takes
effect only in load balancing mode.
In load balancing mode, you can establish the collaboration between the VFs and NQA or BFD through
the tracking function. When the state of the track entry transits to Negative, the weights of all VFs in the
VRRP group on the router decrease by a specific value. When the state of the track entry transits to
Positive or Notready, the original weight values of the VFs restore.
Configuration guidelines
• By default, the weight of a VF is 255, and its lower limit of failure is 10.
When the weight of a VF owner is higher than or equal to the lower limit of failure, its priority is
•
always 255. The priority does not change with the weight. When the upstream link of the VF owner
fails, an LVF must take over as the AVF. The switchover happens when the weight of the VF owner
drops below the lower limit of failure. This requires that the reduced weight for the VF owner be
higher than 245.
Configuration procedure
To configure VF tracking:
Step
1. Enter system view.
2. Enter interface view.
Command
vrrp vrid virtual-router-id timer
advertise adver-interval
vrrp vrid virtual-router-id
source-interface interface-type
interface-number
vrrp check-ttl enable
quit
vrrp dscp dscp-value
Command
system-view
interface interface-type
interface-number
27
Remarks
The default setting is 100
centiseconds.
To maintain system stability, HP
recommends that you set the VRRP
advertisement interval to be greater
than 100 centiseconds.
By default, the source interface for
receiving and sending VRRP
packets is not specified. The
interface where the VRRP group
resides sends and receives VRRP
packets.
By default, TTL check for IPv4 VRRP
packets is enabled.
N/A
The DSCP value identifies the
packet priority during transmission.
By default, the DSCP value for VRRP
packets is 48.
Remarks
N/A
N/A