HP 6400cl, Management Manual, Page: 586 / 664

Router Redundancy Using XRRP
Configuring XRRP
• To specifically identify the virtual router interfaces on the other router
in the Protection Domain, you would enter an
xrrp instance
command
with the
ip
parameter. For example, on Router-1 in VLAN 5, to identify
the virtual router interface on Router-2 that has the IP address 10.1.1.2
and mask length 24, you would enter the following command:
xrrp instance 2 5 ip 10.1.1.2/24
For the instance command that creates the virtual router interface on
the router being configured, the
ip
parameter must not be specified.
These XRRP instances, which are being configured on the router that
owns the IP address, automatically use the IP address of the VLAN on
the router being configured.
Please see the configuration examples on page 12-16 to help clarify
these concepts.
• If a VLAN has multiple IP addresses (a multinet situation), an indi­
vidual IP address can be removed from the XRRP configuration. To
remove an IP address from fail-over protection by the router being
configured, use the
no
version of the instance command. For example,
to remove the virtual interface in the above example from the fail-over
protection provided by Router-1, you would enter the following
command:
no xrrp instance 2 5 ip 10.1.1.2/24
You cannot remove an individual IP address if it is the only IP address
associated with the backup router.
Variable Parameters – In addition, the following variable parameters
can be specified by the
xrrp instance
command:
•
advertise < 1-60 >
– this parameter determines how quickly standard
failover occurs by specifying the frequency, in seconds, that the XRRP
Master sends out XRRP advertisement packets. The default is 5,
indicating that the Master sends out a packet every 5 seconds. (The
standard failover is three times the
advertise
interval.) The default
standard failover is 15 seconds.
•
authentication <
auth-string
>
– this parameter sets the string that is
used by the virtual router instance for the authentication of the
received XRRP packets. The string can be up to 8 characters long.
This same string must be configured on all the virtual routers in the
Protection Domain that wish to use authentication.
By default, there is no authentication. Use the
no
version of the
command to disable the authentication that was previously enabled
on the virtual router interface.
12-14