I have been doing some reading on IPv6 and have read a few different best practices guides and all of them seem to have conflicting information on the best way to assign loopback addresses.
In the end I essentially decided to use /128 on loopback interfaces using globally unique IPv6 space out of a /64 reserved for loopback numbering across our entire network.
The issue I am having now is attempting to get the loopback addresses to route between routers. I was hoping that I would be able to use the link local IPv6 addresses of the port channel between the routers to route the loopback address information, however, this does not seem to be working in Cisco IOS. Is this not supported? Am I doing something wrong?
sh ipv6 int brief outputs: FE80::21D:71FF:FE53:6C00 for Vlan10 interface IP
I can ping the link local ips from each respective router to the other but I cannot ping the loopback interface IPs from the either router to the other. I can ping the loopback IPs locally on each respective router.
Is this setup not supported? Is it a bug in our IOS version? Is this a horrible practice?
The routes do appear in the routing tables for each respective router:
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...