Re: FR mapping of IPv6 address and broadcast keyword

Just like in IPv4 routing, IPv6 IGPs send neighbor discovery with ttl=1
over link local. Broadcast is required on FE80 (link local mapping)
for adjacency to form. Exceptions to the rule are
when uni-cast hello's/updates are being sent with neighbor statements...

Broadcast isn't required for global address. There needs to be a
corresponding mapping for any IPv6 address to a DLCI. IPv6 does not perform
inverse arp. It isn't supported.

HTH

Marc

On Wed, Apr 18, 2012 at 11:47 AM, Joe Astorino <joeastorino1982_at_gmail.com>wrote:

> What Marko said...the broadcast keyword on the map just says "If I have
> broadcast multicast traffic, send it out this DLCI". The L3 address you
> have in the map makes no difference in that case.
>
> On Wed, Apr 18, 2012 at 1:22 PM, Marko Milivojevic <markom_at_ipexpert.com
> >wrote:
>
> > It doesn't matter where you put it. On frame maps, the "broadcast"
> > keyword is a parameter to the DLCI number and the protocol, not the
> > address.
> >
> > I highly recommend *not* putting broadcast on multiple instances of
> > the same DLCI for the same protocol, as that will multiply the traffic
> > generated as the result of pseudobroadcast replication.
> >
> > --
> > Marko Milivojevic - CCIE #18427 (SP R&S)
> > Senior CCIE Instructor - IPexpert
> >
> > On Wed, Apr 18, 2012 at 03:54, Ivan Hrvatska <ivanzghr_at_gmail.com> wrote:
> > > Hi,
> > > just one short question about FR mapping and IPV6 addresses. Since
> > > OSPFv3, EIGRPv6 and RIPng uses link-local FE80:: addresses for
> > > protocol communication and next-hop, what seems to be correct:
> > > a) putting broadcast keyword on static mapping of link-local
> > > b) putting broadcast keyword on static mapping of "actual" IPv6 address
> > >
> > > In Cisco literature they put it only on link-local mapping. I followed
> > > that and routing protocols work fine. In some vendors WBs broadcast
> > > keyword is put on mapping with non-link-local address and on some labs
> > > on both mapping.
> > >
> > > So, what would be the appropriate way to do it on lab?
> > >
> > >
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> >
> >
> >
> >
> >
> >
>
>
> --
> Regards,
>
> Joe Astorino
> CCIE #24347
> http://astorinonetworks.com
>
> "He not busy being born is busy dying" - Dylan
>
>
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>
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Received on Wed Apr 18 2012 - 12:44:40 ART