H3C Technologies H3C SR8800 - Manual (Page 65)

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• Specifying both inner and outer VLAN tags—For subinterfaces configured with ambiguous QinQ
termination, this type of control VLAN should be specified.
NOTE:
•
You need to specify a control VLAN for only Layer 3 Ethernet subinterfaces and Layer 3 aggregate
subinterfaces that have been configured with ambiguous VLAN termination.
• When VRRP works 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 Gratuitous ARP configuration
commands in the 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 Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
• Enter Layer 3 Ethernet
subinterface view:
interface interface-type
interface-number.subnumber
• Enter Layer 3 aggregation
subinterface view:
interface route-aggregation
interface-number.subnumber
Use either command.
3. Specify a VRRP control VLAN.
• Specify a VRRP control VLAN
for the subinterface configured
with ambiguous Dot1q
termination:
vrrp dot1q vid vlan-id
• Specify a VRRP control VLAN
for the subinterface configured
with ambiguous QinQ
termination:
vrrp dot1q vid vlan-id
secondary-dot1q
secondary-vlan-id
Use either command.
By default, no VRRP control VLAN is
specified for the subinterface
configured with VLAN termination.
That is, the master sends VRRP
advertisements within all VLANs
whose VLAN packets are
configured to be terminated by the
subinterface.
Creating a VRRP group and configuring virtual IP address
When creating a VRRP group on an interface, configure a virtual IP address for the VRRP group. If the
interface connects to multiple sub-networks, you can configure multiple virtual IP addresses for the VRRP
group to realize router backup on different sub-networks.
A VRRP group is automatically created when you specify the first virtual IP address for the VRRP group.
If you specify another virtual IP address for the VRRP group later, the virtual IP address is added to the
virtual IP address list of the VRRP group.