Ascend/BGP4 <-> hop <-> Cisco/BGP4

Wed Sep 24 05:09:19 UTC 1997

On Tue, 23 Sep 1997, Phil Howard wrote:

> Has anyone done a BGP4 peering between an Ascend GRF and a Cisco IOS when
> there is an extra hop in between?  I want to be on the lookout for the
> pitfalls.  The Ascend GRF will be on my side, as well the extra hop which
> is needed because Ascend isn't shipping T1 media cards for the GRF, yet.
> So we have to do with an ethernet first link out.  I'm assuming both of
> my upstreams are running Cisco 7xxx.  The topology looks like:
> 
> -------        ------
> | CRL |---T1---|P400|--     ---- servers
> -------        ------  \   /
>                      ---------
>                      |GRF 400|-- dialup
>                      ---------
> -------        ------  /   \
> | MCI |---T1---|P400|--     ---- dedicated
> -------        ------
> 
> When the T1 cards show up, I plan to simplify the topology.

For what it is worth, the CRL router you connect to will probably not be
your BGP peer, if they do it the way they did with us and with other 
people I talked to.  In our case, it was 3 hops away.

John Tamplin					Traveller Information Services
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205/883-4233x7007				Huntsville, AL 35801