From: Alexandre Ribeiro (alexandregomesribeiro@gmail.com)
Date: Thu Jan 17 2008 - 13:15:47 ARST
I'm sure that common sense will prevail with proctors :-) However, on the
question, there may be hints like "guarantee that replicated multicast
traffic will only be sent once". My first lab attempt is scheduled for
August 26, so I don't have any real experience on this. What I'm stating is
what I got from IEE's CoD.
Alex
On Jan 17, 2008 1:58 PM, Mick Vaites <mick@pobox.net.uk> wrote:
> Hi Alex
>
> got that, the question is when confronted with the senario what is the
> proctor looking for ?
>
> Regards
>
> Mick
>
>
> ------------------------------
> *From:* Alexandre Ribeiro [mailto:alexandregomesribeiro@gmail.com]
> *Sent:* 17 January 2008 11:45
> *To:* Mick Vaites
> *Cc:* ccielab@groupstudy.com
> *Subject:* Re: IPv6 Frame-relay map's
>
> Hi,
>
> You need to place both mappings, since OSPFv3 or RIPng will use the link
> local address as the source address for link local scope multicasts.
>
> In the scenario that you presented you only need one broadcast statement,
> since both IPv6 addresses map to the same DLCI. If a multicast or broadcast
> packet arrives to a FR router, the router searches for the map statements
> that have the broadcast keyword and sends a packet to each circuit specified
> on those map statements. On the presented scenario, if you placed two
> broadcast statements, the router would send the same multicast packet twice
> to that DLCI.
>
> Alex
>
> On Jan 15, 2008 12:25 AM, Mick Vaites <mick@pobox.net.uk> wrote:
>
> > Hi all,
> >
> > I am puzzling over which is correct and which is not.
> >
> > It is necessary to put in L2 / L3 mappings for both the actual IPv6
> > addressing as well as the lnik local addresses but which gets the
> > broadcast statement?
> >
> > Senario: two routers connected for IPv6, R1 and R5 over a frame-relay
> > cloud, network is 2001:cc1e:5:15::x/64 and the DLCI's are 105 and 501
> > respectively. This are the possible snippets for R1. (apologies for any
> > obvious typos).
> >
> > I am wondering which is right
> >
> > !R1
> > Interface Serial 1/0
> > ipv6 address 2001:cc1e:5:15::1/64
> > ipv6 address fe80::1 link-local
> > frame-relay map ipv6 fe80::5 105 broadcast <---- broadcast on the
> > link-local
> > frame-relay map ipv6 2001:cc1e:5:15::5 105
> >
> > or
> >
> > !R1
> > Interface Serial 1/0
> > ipv6 address 2001:cc1e:5:15::1/64
> > ipv6 address fe80::1 link-local
> > frame-relay map ipv6 fe80::5 105
> > frame-relay map ipv6 2001:cc1e:5:15::5 105 broadcast <----- broadcast
> > on the main IP
> >
> > I have tried both of these senarios and both work okay ?
> >
> > Best regards
> >
> > Mick
> >
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