On Sat, Jan 23, 2010 at 07:22:21PM +0500, Muhammad Aamir wrote: > Hi Experts, > > We are planning to go with IPv6; currently we have all Junipers in the > Core. I just want to know does juniper supports all features related > to IPv6. Anybody faced any problem while configuring IPv6 on their > Juniper routers. Does JUNOS (version 9.4) have any bug related to > IPv6? All comments are really appreciated.
Well, that's a pretty non-specific question, but off the top of my head I'd say that IPv6 works extremely well on Juniper with the following caveats: * I've heard reports of issues load balancing IPv6 traffic over ae's on older platforms (M20s and the like). I don't know exactly what platforms are affected, but it seems likely that everything pre M320/T-series would have the same issue. The older PFEs don't seem to be able to hash on inet6 addresses, so all the v6 traffic from a single mac lands on a single ae member. * Juniper does something weird with next-hop self, which causes a lot of grief when you want to do ipv4/ipv6 dual stack. Basically the problems is there isn't an "update-source <interface>" option like Cisco has, so the next-hop self value is taken from the local address of the BGP session rather than from any particular interface. So when you carry ipv4+piv6 AFIs over a single IBGP session (using for example an IPv4 address as transport), and you do a next-hop self, it sets the v6 nexthop to ::i.p.v.4 rather than a proper v6 address. You can avoid setting next-hop self in most cases, but it's pretty hard to avoid when you're doing prefix origination. IMHO the easiest way to work around this is just to make an ::i.p.v.4 alias on your lo0 and carry both values in your IGP, but it's something to keep in mind. * IPv6 support is currently nonexistant on the EX8200-series platforms, with varying dates mentioned for when it will finally be added (some of the worst ones being 2011 :P). Why they even bothered shipping this box without IPv6 support I can't imagine, but for whatever reason they did. -- Richard A Steenbergen <r...@e-gerbil.net> http://www.e-gerbil.net/ras GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC) _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp