3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring VRRP for IPv6 771
solve this problem, you can prolong the time interval to send VRRP packets and
configure a preemption delay.
Displaying and
Maintaining VRRP for
IPv4
Configuring VRRP for
IPv6
Complete these tasks to configure VRRP for IPv6:
c
CAUTION: VRRP is not supported on the VLAN interfaces of Super VLAN. Do not
configure VRRP on this type of interfaces.
Enabling Users to Ping
Virtual IPv6 Addresses of
Standby Groups
According to VRRPv3, the virtual IPv6 addresses of a standby group cannot be
pinged successfully. Thus, a user connected to the switch is unable to rely on the
ping command to judge whether or not an IPv6 address has been used by the
standby group. This may result in a user configuring the same IPv6 address for the
host and for the standby group. In this case, all the packets in this network
segment will be sent to the host, instead of being correctly forwarded.
You can, however, follow the steps below to enable a user to successfully ping the
virtual IPv6 addresses of standby groups:
To do... Use the command... Remarks
Display VRRP status display vrrp [ verbose ] [
interface interface-type
interface-number [ vrid
virtual-router-id ] ]
Available in any view
Display VRRP statistics display vrrp statistics [
interface interface-type
interface-number [ vrid
virtual-router-id ] ]
Available in any view
Remove VRRP statistics reset vrrp statistics [
interface interface-type
interface-number [ vrid
virtual-router-id ] ]
Available in user view
Task Remarks
“Enabling Users to Ping Virtual IPv6 Addresses of Standby Groups”
on page 771
Optional
“Configuring the Association Between MAC Address and Virtual
IPv6 Address” on page 772
Optional
“Creating Standby Group and Configuring Virtual IPv6 Address” on
page 772
Required
“Configuring Priority, Preemption Mode and Interface Tracking for a
Standby Group” on page 773
Optional
“Configuring VRRP Packet Attributes” on page 773 Optional
To do... Use the command... Remarks
Enter system view system-view -
Enable a user to ping virtual
IPv6 address of the standby
group
vrrp ipv6 ping-enable Optional
Enabled by default