Specifying An Ip Address For A Virtual Router - Alcatel OmniSwitch 6800 Series Network Configuration Manual

Configuring VRRP
Preempt mode. By default, preempt mode is enabled. Use no preempt to turn it off, and preempt to
•
turn it back on. For more information about the preempt mode, see
Routers" on page
Advertising interval (in seconds). Use the interval keyword with the desired number of seconds for the
•
delay in sending VRRP advertisement packets. The default is 1 second. See
tisement Interval" on page
VRRP authentication. By default, VRRP packets are not authenticated; use authenticate to enable
•
simple text password authentication. A password of up to 16 characters must be entered. Use no
authenticate to disable authentication. See
The following example creates a virtual router (with VRID 7) on VLAN 2 with a priority of 75. VRRP
messages will be sent at intervals of 2 seconds, and VRRP packets will be authenticated with the pass-
word wwwtoe.
-> vrrp 7 2 priority 75 no preempt interval 2 authenticate wwwtoe
Note. All virtual routers with the same VRID on the same LAN should be configured with the same
advertising interval; otherwise the network may produce duplicate IP or MAC address messages. These
virtual routers should be configured with the same authentication setting. If authentication is enabled, all
routers must have the same password.
The vrrp command may also be used to specify whether the virtual router is enabled or disabled (it is
disabled by default). However, the virtual router must have an IP address assigned to it before it can be
enabled. Use the vrrp ip command as described in the next section to specify an IP address or addresses.
For more information about the vrrp command syntax, see the OmniSwitch CLI Reference Guide.

Specifying an IP Address for a Virtual Router

An IP address must be specified before a virtual router may be enabled. To specify an IP address for a
virtual router, use the
-> vrrp 6 4 ip 10.10.2.3
-> vrrp 6 4 enable
In this example, the vrrp ip command specifies that virtual router 6 on VLAN 4 will be used to backup IP
address 10.10.2.3. The virtual router is then enabled with the vrrp command.
Currently the OmniSwitch does not support multiple IP addresses on a single virtual router. If an
OmniSwitch is the IP address owner for a virtual router, then that address must be assigned to the virtual
router. If the OmniSwitch is configured as a backup for a VRRP router that allows more than one IP
address to be assigned to a virtual router, then multiple addresses may be assigned to the virtual router.
To remove an IP address from a virtual router, use the no form of the vrrp ip command. For example:
-> vrrp 6 4 disable
-> vrrp 6 4 no ip 10.10.2.3
In this example, virtual router 6 is disabled. (A virtual router must be disabled before IP addresses may be
added/removed from the router.) IP address 10.10.2.3 is then removed from the virtual router with the no
form of the vrrp ip command.
OmniSwitch 6800 Series Network Configuration Guide
16-11.
16-10.
vrrp ip command and the relevant IP address. For example:
"Setting Preemption for Virtual
"Configuring VRRP Authentication" on page
November 2004
Configuration Overview
"Configuring the Adver-
16-11.
page 16-9