FTOS Configuration Guide for the C-Series - Force10 Networks

Please note that the above recommendations are only indicative, and you must take into account the overall
traffic pattern in the network (like ARP broadcasts, IP broadcasts, STP, etc.) before changing the
advertisement interval. When the number of packets processed by RP2 processor increases or decreases
based on the dynamics of the network, the advertisement intervals in Table 46 may increase or decrease
accordingly.
Caution: Increasing the advertisement interval increases the VRRP Master dead interval, resulting in an
increased failover time for Master/Backup election. Ensure you take extra caution when increasing the
advertisement interval, as the increased dead interval causes packets to be dropped during that
switch-over time.
VRRP Configuration
To configure VRRP, use the commands in the VRRP mode to configure VRRP for 1-Gigabit Ethernet,
10-Gigabit Ethernet, VLAN, and port-channel interfaces.
By default, VRRP is not configured on the E-Series.
Configuration Task List for VRRP
The following list specifies the configuration tasks for VRRP:
• Create a virtual router on page 432 (mandatory)
• Assign virtual IP addresses on page 433 (mandatory)
• Set priority for the vrrp group on page 435 (optional)
• Configure authentication for VRRP on page 436 (optional)
• Enable preempt on page 437 (optional)
• Change the advertisement interval on page 438 (optional)
• Track an interface on page 438 (optional)
For a complete listing of all commands related to VRRP, refer to FTOS Command Line Interface.
Create a virtual router
To enable VRRP, you must create a virtual router. In FTOS, a virtual router is called a VRRP group, and
the first step in creating a virtual router is to assign a Virtual Router Identifier (VRID).
The interface containing the VRRP group must be enabled and configured with an primary IP address.
432 Virtual Router Redundancy Protocol (VRRP)