Associating The Track Module With An Application Module; Associating Track With Vrrp - HPE FlexNetwork HSR6800 series Configuration Manual

Associating the Track module with an application
module

Associating Track with VRRP

VRRP is an error-tolerant protocol. It adds a group of routers that can act as network gateways to a
VRRP group, which forms a virtual router. Routers in the VRRP group elect the master acting as the
gateway according to their priorities. A router with a higher priority is more likely to become the
master. The other routers function as the backups. When the master fails, the backups in the VRRP
group elect a new gateway to undertake the responsibility of the failed master. This ensures that the
hosts in the network segment can uninterruptedly communicate with external networks.
When VRRP is operating in standard protocol mode or load balancing mode, associate the Track
module with the VRRP group to implement the following actions:
•
Change the priority of a router according to the status of the uplink. If a fault occurs on the uplink
of the router, the VRRP group cannot be aware of the uplink failure. If the router is the master,
hosts in the LAN cannot access the external network. This problem can be solved by
establishing a track-VRRP group association. Use the detection modules to monitor the status
of the uplink of the router and establish collaborations between the detection modules, Track
module and VRRP. When the uplink fails, the detection modules notify the Track module to
change the status of the monitored track entry to Negative, and the priority of the master
decreases by a specific value. This allows a higher priority router in the VRRP group to become
the master, and maintains proper communication between the hosts in the LAN and the
external network.
•
Monitor the master on a backup. If a fault occurs on the master, the backup working in
switchover mode will switch to the master immediately to maintain normal communication.
When VRRP is operating in load balancing mode, associate the Track module with the VRRP Virtual
Forwarder (VF) to implement the following functions:
•
Change the priority of the active VF (AVF) according to its uplink state. When the uplink of the
AVF fails, the track entry changes to Negative state and the weight of the AVF decreases by a
specific value so that the VF with a higher priority becomes the new AVF to forward packets.
•
Monitor the AVF status from the listening VF (LVF), which refers to the VF in listening state.
When the AVF fails, the LVF that is operating in switchover mode becomes the new AVF to
ensure continuous forwarding.
Follow these guidelines when you associate Track with VRRP group:
•
VRRP tracking is not valid on an IP address owner. An IP address owner refers to a router when
the IP address of the virtual router is the IP address of an interface on the router in the VRRP
group.
•
When the status of the track entry changes from Negative to Positive or Invalid, the associated
router or VF restores its priority automatically.
•
You can associate a nonexistent track entry with a VRRP group or VF. The association takes
effect only after you use the track command to create the track entry. For more information
about VRRP, see "Configuring VRRP."
To associate Track with VRRP group:
Step
1. Enter system view.
2. Enter interface view.
Command
system-view
interface interface-type
interface-number
206
Remarks
N/A
N/A