Thanks Steve, all posts edited.
I've just run the ping again to make sure I'm getting things in the right direction.
pinging Device2 from Device1
[root@device1:Standby:Disconnected] config ping 192.168.63.216
PING 192.168.63.216 (192.168.63.216) 56(84) bytes of data.
64 bytes from 192.168.63.216: icmp_seq=1 ttl=64 time=0.189 ms
64 bytes from 192.168.63.216: icmp_seq=2 ttl=64 time=0.168 ms
64 bytes from 192.168.63.216: icmp_seq=3 ttl=64 time=0.166 ms
64 bytes from 192.168.63.216: icmp_seq=4 ttl=64 time=0.166 ms
^C
--- 192.168.63.216 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 0.166/0.172/0.189/0.013 ms
[root@device1:Standby:Disconnected] config ping 192.168.11.170
PING 192.168.11.170 (192.168.11.170) 56(84) bytes of data.
From 192.168.10.170 icmp_seq=2 Destination Host Unreachable
From 192.168.10.170 icmp_seq=3 Destination Host Unreachable
^C
--- 192.168.11.170 ping statistics ---
4 packets transmitted, 0 received, +2 errors, 100% packet loss, time 2998ms
pinging Device1 from Device2
[root@device2:Active:Disconnected] config ping 192.168.63.63
PING 192.168.63.63 (192.168.63.63) 56(84) bytes of data.
64 bytes from 192.168.63.63: icmp_seq=1 ttl=64 time=0.268 ms
64 bytes from 192.168.63.63: icmp_seq=2 ttl=64 time=0.148 ms
^C
--- 192.168.63.63 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.148/0.208/0.268/0.060 ms
[root@device2:Standby:Disconnected] config ping 192.168.10.170
PING 192.168.10.170 (192.168.10.170) 56(84) bytes of data.
From 192.168.11.170 icmp_seq=1 Destination Host Unreachable
From 192.168.11.170 icmp_seq=2 Destination Host Unreachable
^C
--- 192.168.10.170 ping statistics ---
3 packets transmitted, 0 received, +2 errors, 100% packet loss, time 2000ms
So they can ping the management address but not the Self IPs.
Someone else has commented on my other post about Network > Interfaces...
On Device1, 1.1 & 1.2 are showing UP, only 1.1 has a VLAN count
On Device2 1.1 DOWN & 1.2 UP, again only 1.1 has a VLAN count
But I'm not overly sure how this is controlled.