HPE FlexNetwork HSR6800 series Configuration Manual page 152

Figure 43 VRRP control VLAN
As shown in Figure 43, configure ambiguous VLAN termination for VLAN 10 and VLAN 20 on the
Layer 3 Ethernet subinterfaces on routers. To enable the master periodically multicasting VRRP
advertisements to the backups, be sure to enable the subinterfaces configured with VLAN
termination to transmit broadcast/multicast packets. Then, the master sends VRRP advertisements
within all VLANs whose VLAN packets are configured to be terminated by the subinterfaces. If the
Layer 3 Ethernet subinterfaces are configured to terminate packets from many VLANs, there will be
many VRRP advertisements to be transmitted through the subinterfaces, and the performance of the
router will be seriously affected.
To solve this problem, you can configure a VRRP control VLAN to allow the master to send VRRP
advertisements only within the control VLAN when the subinterfaces configured with VLAN
termination are disabled from transmitting broadcast or multicast packets.
VRRP control VLAN includes the following categories:
•
Specifying a single VLAN tag:
For subinterfaces configured with ambiguous Dot1q termination, this type of control VLAN
should be specified.
•
Specifying both inner and outer VLAN tags:
For subinterfaces configured with ambiguous QinQ termination, this type of control VLAN
should be specified.
You need to specify a control VLAN only for a Layer 3 Ethernet subinterface and Layer 3 aggregation
subinterface configured with ambiguous VLAN termination.
When VRRP operates in load balancing mode, you cannot specify the VRRP control VLAN.
If you specified the VRRP control VLAN, to update MAC address entries on devices in the VLAN
terminated ambiguously after an active/standby switchover, use the arp send-gratuitous-arp
command to enable the routers in the VRRP group to periodically send gratuitous ARP packets. For
more information about the arp send-gratuitous-arp command, see Layer 3—IP Services
Command Reference.
For more information about VLAN termination, see Layer 2—LAN Switching Configuration Guide.
To specify the VRRP control VLAN:
Step
1. Enter system view.
Command
system-view
145
Remarks
N/A