Users Guide

Setting VRRP Initialization Delay
When congured, VRRP is enabled immediately upon system reload or boot. You can delay VRRP initialization to allow the IGP and EGP
protocols to be enabled prior to selecting the VRRP Master. This delay ensures that VRRP initializes with no errors or conicts. You can
congure the delay for up to 15 minutes, after which VRRP enables normally.
NOTE: When you reload a node that contains VRRP conguration and is enabled for VLT, Dell Networking recommends that you
congure the reload timer by using the vrrp delay reload command to ensure that VRRP is functional. Otherwise, when
you reload a VLT node congured for VRRP, the local destination address is not seen on the reloaded node causing suboptimal
routing.
Set the delay timer on individual interfaces. The delay timer is supported on all physical interfaces, VLANs, and LAGs.
When you congure both CLIs, the later timer rules VRRP enabling. For example, if you set vrrp delay reload 600 and vrrp
delay minimum 300, the following behavior occurs:
• When the system reloads, VRRP waits 600 seconds (10 minutes) to bring up VRRP on all interfaces that are up and congured for
VRRP.
• When an interface comes up and becomes operational, the system waits 300 seconds (5 minutes) to bring up VRRP on that interface.
To set the delay time for VRRP initialization, use the following commands.
• Set the delay time for VRRP initialization on an individual interface.
INTERFACE mode
vrrp delay minimum seconds
This time is the gap between an interface coming up and being operational, and VRRP enabling.
The seconds range is from 0 to 900.
The default is 0.
• Set the delay time for VRRP initialization on all the interfaces in the system congured for VRRP.
INTERFACE mode
vrrp delay reload seconds
This time is the gap between system boot up completion and VRRP enabling.
The seconds range is from 0 to 900.
The default is 0.
Sample Congurations
Before you set up VRRP, review the following sample congurations.
VRRP for an IPv4 Conguration
The following conguration shows how to enable IPv4 VRRP. This example does not contain comprehensive directions and is intended to
provide guidance for only a typical VRRP conguration. You can copy and paste from the example to your CLI. To support your own IP
addresses, interfaces, names, and so on, be sure that you make the necessary changes. The VRRP topology was created using the CLI
conguration shown in the following example.
Virtual Router Redundancy Protocol (VRRP)
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