Enabling Users To Ping Virtual Ip Addresses; Configuring The Association Between Virtual Ip Address And Mac Address - 3Com MSR 50 Series Configuration Manual

1980 C 107: VRRP C
HAPTER
Enabling Users to Ping
Virtual IP Addresses
c
Configuring the
Association Between
Virtual IP Address and
MAC Address
ONFIGURATION
Task
"Configuring Router Priority, Preemption Mode and Tracking Function"
on page 1982
"Configuring VRRP Packet Attributes" on page 1983
You can configure whether the master router responds to the received ICMP echo
requests, that is, whether the virtual IP address of a standby group can be
successfully pinged.
Follow these steps to enable a user to successfully ping the virtual IP addresses of
standby groups:
To do...
Enter system view
Enable users to ping virtual IP
address of the standby group
CAUTION: Configure this function before creating a standby group. Otherwise,
your configuration will fail.
After the virtual IP address of a standup group is associated with a MAC address,
the master router takes the configured MAC address as the source MAC address
of the packets to be sent, so that the hosts in the internal network can learn the
association between the IP address and the MAC address and thus forward the
packets to be forwarded to the other network segments to the master router
properly.
There are two types of association between virtual IP address and MAC address:
Virtual IP address is associated with virtual router MAC address
■
By default, a MAC address is created for a standby group after the standby group
is created, and the virtual IP address is associated with the virtual MAC address.
With such association adopted, the hosts in the internal network need not update
the association between IP address and MAC address when the master router
changes.
Virtual IP address is associated with real MAC address of the interface
■
When an IP address owner exists in a standby group, if you associate the virtual IP
address with the virtual MAC address, two MAC addresses are associated with an
IP address. In this case, you can associate the virtual IP address of the standby
group with the real MAC address, so that the packets from a host are forwarded
to the IP address owner according the real MAC address.
Follow these steps to configure the association between MAC address and virtual
IP address:
To do...
Enter system view
Use the command...
system-view
vrrp ping-enable
Use the command...
system-view
Remarks
Optional
Optional
Remarks
-
Optional
Enabled by default.
Remarks
-