Nokia IPSO 4.0 User Manual

Nokia provides support for OSPF, BGP, RIP, and PIM (both sparse and dense mode) to advertise 
the virtual IP address of the VRRP virtual router. You must use monitored-circuit VRRP, not 
VRRPv2, to configure virtual IP support for a dynamic routing protocol. You must also enable 
the Accept Connections to VRRP IPs option. 

IPSO also supports OSPF over VPN tunnels that terminates at a VRRP group. Only active-
passive VRRP configurations are supported, active-active configurations are not.

The master is defined as the router with the highest setting for the priority parameter. You define 
a priority for each platform when you establish the VRID or add a platform to it. If two 
platforms have equivalent priorities, the platform that comes online and starts broadcasting 
VRRP advertisements first becomes the master. 

 shows a simple VRRP configuration with a master (Platform A) and one backup 

(Platform B).

A VRRP router (a router that is running VRRP) might participate in more than one VRID. The 
VRID mappings and priorities are separate for each VRID. You can use this type of 
configuration to create two VRIDs on the master and backup platforms, using one VRID for 
connections with the external network and one for connection with the internal network, as 
shown in 

. 

Host H1

Host H2

Host H3

Host H4

00496

VRID 192

192.168.2.1

192.168.2.2

Platform A

Platform B

Internal Network 192.168.2.0