On Wed, Jul 28, 2010 at 11:58 AM, Miya Kohno <mko...@juniper.net> wrote: > Hi, > >>> The draft is discussing about inter-router backbone link, where >>> "directly-connected neighbor" has a significant meaning from >>> routing protocol point of view. So it needs to be assumed "on-link". > >> Even if the two routers are in the off-link model for the IPv6 address
'off link' does not (for the case of this discussion) mean 'off the ethernet wire', it's a semantic distinction that thayler and shermant are attempting to make in order to keep the authors from having to go off and muck with a bunch of other already finalized documents. So... in short 'off link' just means 'dont call this a /127, call this two ips that happen to live together on the same piece of ethernet/sonet/frame/wifi' -chris >> and RA configuration, the network between the two routers is still a >> directly connected network. One router sends his packet to the other >> without going thru any routed hop. So what specifically fails for BGP >> with an off-link addressing and RA configuration? > > A quote from IOS manual: > > ------------------ > A BGP routing process will verify the connection of single-hop eBGP > peering session (TTL=254) to determine if the eBGP peer is directly > connected to the same network segment by default. If the peer is not > directly connected to same network segment, connection verification will > prevent the peering session from being established. > ------------------ > http://cisco.biz/en/US/docs/ios/12_3t/ip_route/command/reference/ip2_n1g > t.html#wp1109875 > > Miya > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
