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184 Nokia Network Voyager for IPSO 4.0 Reference Guide
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.
Note
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.
Figure 1 shows a simple VRRP configuration with a master (Platform A) and one backup
(Platform B).
Figure 1 Simple VRRP Configuration
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 Figure 2.
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