On Fri, Jul 13, 2012 at 10:38 AM, -Hammer- <[email protected]> wrote:
> OK. I'm pretty sure I'm gonna get some flak for this but I'll share this > question and it's background anyway. Please be gentle. > > In the past, with IPv4, we have used reserved or "non-routable" space > Internally in production for segments that won't be seen anywhere else. > Examples? A sync VLAN for some FWs to share state. An IBGP link between > routers that will never be seen or advertised. In those cases, we have > often used 192.0.2.0/24. It's reserved and never used and even if it did > get used one day we aren't "routing" it internally. It's just on segments > where we need some L3 that will never be seen. > > On to IPv6 > > I was considering taking the same approach. Maybe using 0100::/8 or > 1000::/4 or A000::/3 as a space for this. > Would using "just" Link Locals not be sufficient? *(Failing that, as others noted, ULAs are the next "right" answer ... )* * * /TJ
