3Com Switch 8800 Advanced Software V5 Configuration Guide

768 CHAPTER 54: VRRP CONFIGURATION
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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 IP Addresses of
Standby Groups
According to VRRP, the virtual IP 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 IP address has been used by the standby
group. This may result in a user configuring the same IP 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 IP addresses of standby groups:
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CAUTION: Configure this function before creating a standby group. Otherwise,
your configuration will fail.
Configuring the
Association Between
MAC Address and
Virtual IP Address
There are two types of association between MAC address and virtual IP address:
■ Virtual IP address is associated with virtual switch MAC address
■ Virtual IP address is associated with real MAC address of the interface
Follow these steps to configure the association between MAC address and virtual
IP address:
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CAUTION: You should configure this function before creating a standby group.
Otherwise, you cannot modify the mapping between the MAC address and the
virtual IP address.
“Creating Standby Group and Configuring Virtual IP Address” on
page 769
Required
“Configuring Priority, Preemption Mode and Interface Tracking for a
Standby Group” on page 769
Optional
“Configuring VRRP Packet Attributes” on page 770 Optional
Task Remarks
To do... Use the command... Remarks
Enter system view system-view -
Enable users to ping virtual IP
address of the standby group
vrrp ping-enable Optional
Enabled by default.
To do... Use the command... Remarks
Enter system view system-view -
Configure the association
between MAC address and
virtual IP address
vrrp method { real-mac |
virtual-mac }
Optional
The virtual MAC address is
associated with the virtual IP
address by default.