Configuring VRRP and VRRPE
December 2005 © Foundry Networks, Inc. 22 - 13
The CLI displays a warning message such as the following:
Router1(config-vrrp-router)# no router vrrp
router vrrp mode now disabled. All vrrp config data will be lost when writing to
flash!
If you have disabled the protocol but have not yet saved the configuration to the startup-config file and reloaded
the software, you can restore the configuration information by re-entering the command to enable the protocol (ex:
router vrrp). If you have already saved the configuration to the startup-config file and reloaded the software, the
information is gone.
If you are testing a VRRP or VRRPE configuration and are likely to disable and re-enable the protocol, you might
want to make a backup copy of the startup-config file containing the protocol’s configuration information. This way,
if you remove the configuration information by saving the configuration after disabling the protocol, you can restore
the configuration by copying the backup copy of the startup-config file onto the flash memory.
Configuring Additional VRRP and VRRPE Parameters
You can modify the following VRRP and VRRPE parameters on an individual VRID basis. These parameters
apply to both protocols:
• Authentication type (if the interfaces on which you configure the VRID use authentication)
• Router type (Owner or Backup)
NOTE: For VRRP, change the router type only if you have moved the real IP address from one router to
another or you accidentally configured the IP address Owner as a Backup.
For VRRPE, the router type is always Backup. You cannot change the type to Owner.
• Backup priority
• Suppression of RIP advertisements on Backup routes for the backed up interface
• Hello interval
• Dead interval
• Backup Hello messages and message timer (Backup advertisement)
•Track port
• Track priority
• Backup preempt mode
For information about the fields, see the parameter descriptions in the following sections.
See “VRRP and VRRPE Parameters” on page 22-9 for a summary of the parameters and their defaults.
Authentication Type
If the interfaces on which you configure the VRID use authentication, the VRRP or VRRPE packets on those
interfaces also must use the same authentication. Foundry’s implementation of VRRP and VRRPE supports the
following authentication types:
• No authentication – The interfaces do not use authentication. This is the default for VRRP and VRRPE.
• Simple – The interfaces use a simple text-string as a password in packets sent on the interface. If the
interfaces use simple password authentication, the VRID configured on the interfaces must use the same
authentication type and the same password.
To configure the VRID interface on Router1 for simple-password authentication using the password “ourpword”,
enter the following commands:
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