Understanding the current IPv4 configuration when VCS global clustering and VVR agents are not configured


Understanding the current IPv4 configuration when VCS global clustering and VVR agents are not configured
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Before you migrate VVR from IPv4 to IPv6, review your current configuration. The sample configuration is as follows:

There are two nodes each on the Primary and the Secondary site of replication.
RVG objects are created on both the sites. Replication between the sites uses the IPv4 address.
A failover service of the Virtual IPv4 address is created for high availability.
The failover service group consists of one IP resource and one NIC resource for the virtual IPv4 address.

On every system, the state of the resources in the failover service group is similar to the following:

# hares -state | grep -i res
#Resource     Attribute        System     Value
ipres         State            swsx25     ONLINE
ipres         State            swsx27     OFFLINE
nicres        State            swsx25     ONLINE
nicres        State            swsx27     ONLINE

On both the systems, the state of the failover service group is similar to the following:

# hastatus -summ | grep -i VVRGRP
B  VVRGRP          swsx25               Y          N      ONLINE
B  VVRGRP          swsx27               Y          N      OFFLINE

The contents of the main.cf file in the failover service group are displayed as follows:

group VVRGRP (
        SystemList = { swsx25 = 0, swsx27 = 1 }
        AutoStartList = { swsx25 }
        )

        IP ipres (
                Device = bge0
                Address = "10.209.87.186"
                NetMask = "255.255.252.0"
                )

        NIC nicres (
                Enabled = 1
                Device = bge0
                )
 
        ipres requires nicres

        // resource dependency tree
        //
        //      group VVRGRP
        //      {
        //      IP ipres
        //          {
        //          NIC nicres
        //          }
        //      }

After you create the service group VVRGRP, the output of the ifconfig command is as follows:

# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
bge0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
        inet 10.209.85.35 netmask fffff800 broadcast 10.209.87.255
        ether 0:14:4f:1f:bd:f1
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
        inet6 ::1/128