I'm trying to convert all of our gateway interfaces from HSRP to VRRP in an effort to move toward standard protocols. Unfortunately I'm having trouble finding good documentation for setting up IPv6 addresses.
Our current setup is something like this (addresses made up):
(R1)
int vlan100
ip address 10.0.100.2/24
ipv6 address fd9c:a:b:c:d::2/64
hsrp version 2
hsrp 100
ip 10.0.100.1
hsrp 100 ipv6
ip fd9c:a:b:c:d::1
(R2)
int vlan100
ip address 10.0.100.3/24
ipv6 address fd9c:a:b:c:d::3/64
hsrp version 2
hsrp 100
ip 10.0.100.1
hsrp 100 ipv6
ip fd9c:a:b:c:d::1
The VRRP setup is something like this:
int vlan100
ip address 10.0.100.2/24
ipv6 address fd9c:a:b:c:d::2/64
vrrpv3 100 address-family ipv4
address 10.0.100.1 primary
vrrpv3 100 address-family ipv6
address fd9c:a:b:c:d::1 primary <----- This is the problem, doesn't work because it wants a link local address.
I found that I had to add a link local IPv6 address to the vrrpv3 ipv6 instance first, but I found no instructions which describe that or give any advice. So I just made up fe80:a:b:c:d::1, then added fd9c:a;b:c:d::1 and it just started working.
So it looks like this now:
int vlan100
ip address 10.0.100.2/24
ipv6 address fd9c:a:b:c:d::2/64
vrrpv3 100 address-family ipv4
address 10.0.100.1 primary
vrrpv3 100 address-family ipv6
address fe80:a:b:c:d::1 primary
address fd9c:a:b:c:d::1
And this works. The problem is, I don't know if this is correct or a good idea. I would rather see some documentation or an example configuration before I continue.
Any help or pointers to documentation would be appreciated.
