Hi,
On Tue, 28 Jul 1998, Jon Lewis wrote:
> I'm about to grow what's been primarily a LAN into a WAN over the next few
> weeks. Instead of just one POP, I'm going to have several remote POPs
> connected via frame relay to the main one (home POP). I've been using
> OSPF on the LAN at the home POP, and BGP between the home POP and its
> upstream connections. I'm trying to decide what IGP to use on the WAN
> now.
>
> The options I'm considering are OSPF and iBGP. I think I'd rather go
> with iBGP. I plan to continue to use OSPF on the home POP LAN, and will
> probably use it at each remote POP, but I'm not sure if I want to try it
> over WAN connections.
>
iBGP is not really an IGP. You are better off running both OSPF (or ISIS)
and IBGP on the WAN.
> The biggest objection I have with BGP is that BGP really wants to be fully
> meshed, or I'll have to setup a router (probably a home pop) to be a route
> reflector. If I do run OSPF at each LAN, but use iBGP between POPs, then
> I will probably have to carefully export OSPF into BGP.
>
If you are only OSPF or only IBGP you are going to have a "redistribution"
nightmare...I recommend running both...Carry your customers routes in BGP
and you backbone routes in your IGP of choice.
best,
Amir
> Anyone have any recommendations?
>
> Multiple T1's to Internet
> ||
> Remote1-----\ ||
> \ ||
> home POP
> / \
> Remote2-------/ \--------Remote3---|
> | [1]
> ----------------------|------
> | | |
> | Remote3a1-------Remote3a |
> -----------------------------
>
> [1] These remote POPs connected to remote POPs don't exist yet, but it is
> likely they will exist at some point.
>
>
> ------------------------------------------------------------------
> Jon Lewis <jlewis@fdt.net> | Spammers will be winnuked or
> Network Administrator | drawn and quartered...whichever
> Florida Digital Turnpike | is more convenient.
> ______http://inorganic5.fdt.net/~jlewis/pgp for PGP public key____
>
>
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