[92352] in North American Network Operators' Group
RE: Q on what IGP routing protocol to use for supplying only gateway address
daemon@ATHENA.MIT.EDU (Mark D. Kaye)
Thu Sep 14 17:26:24 2006
Date: Thu, 14 Sep 2006 22:25:30 +0100
In-Reply-To: <Pine.LNX.4.62.0609141047010.7224@sokol.elan.net>
From: "Mark D. Kaye" <mark@eatonkaye.com>
To: "william(at)elan.net" <william@elan.net>
Cc: <nanog@nanog.org>
Errors-To: owner-nanog@merit.edu
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Hi,
In Answer to you question re Windows 2000/2k3 you would just need to install
routing and remote access service (RRAS) - part of windows, you can then add
OSPF as a routing protocol and tell it which adapter to listen on.
I have used this successfully when setting ISA Server up with a default
gateway off one nic (pointing towards the net - protected by a decent
firewall) and another pointing at the local network, one can then learn the
LAN routes using OSPF or RIP etc. and have a default route out the other
NIC.
Mark Kaye
-----Original Message-----
From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of
william(at)elan.net
Sent: 14 September 2006 18:55
To: Roland Dobbins
Cc: nanog@nanog.org
Subject: Re: Q on what IGP routing protocol to use for supplying only
gateway address
On Thu, 14 Sep 2006, Roland Dobbins wrote:
> On Sep 14, 2006, at 10:35 AM, william(at)elan.net wrote:
>
>> Any suggestion as to what IGP protocol is best for this scenario?
>
> This is more of a cisco-nsp question, but probably OSPF, as it's supported
> by the routing daemons on most *NIXes out of the box. I don't know about
> Windows.
If this was 5+ years ago, I'd have said RIP as it works great for
supplying only gateway address, but I want RIP to go RIP and will
not use it again. So yes OSPF seems like best choice, but I was
hoping something simple for gateway-only is available. I've no idea
yet how to deal with Windows (all win2000 and win2003), anybody?
> Are you doing anycasting or something?
Yes, anycasting will be involved but only for very small number of
servers (all linux) - that is kind-of separate issue. The equipment
itself however will only see local gateway addresses (obviously), so
it should not care or know about it.
> If simple redundancy in the default gateway is the goal, another (and
> probably simpler) method is to implement HSRP or GLBP between your routers
> which are serving the hosts in question.
Can't use HSRP in this case (or IVRP or whatever else its called with
non-cisco options) - too long to explain why.
--
William Leibzon
Elan Networks
william@elan.net
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