From: Swan, Jay (jswan@sugf.com)
Date: Thu Jul 05 2007 - 12:33:44 ART
There's a good discussion of "which IGP" in the Cisco Press book
"Optimal Routing Design". There's also a Networkers presentation on it
that's given almost every year.
As usual, it depends on what you're trying to accomplish. In very large
networks, design is the main limiting factor in scalability. In short,
EIGRP scales better in very large hub-and-spoke topologies (such as
really big DMVPN implementations), whereas OSPF scales better in meshy
topologies.
Both protocols require tuning in large environments. EIGRP can be tuned
to converge very quickly (~200ms) in dual-homed, L3-switched
access-distribution-core type environments; OSPF may be near this now
with all the recent enhancements, but I'm not sure.
Obviously EIGRP is proprietary, which can be a problem. Also, you need
to use a link-state protocol if you are doing MPLS TE.
Jay
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
john matijevic
Sent: Thursday, July 05, 2007 6:49 AM
To: Cisco certification
Subject: OT routing protocol for internal network
Hello Team,
Curious as to which routing protocol is best for internal network for
large
network containing thousands of devices. I have implemented OSPF for a
pretty large network and I tend to prefer OSPF, want to see what people
think of EIGRP, as well as others, obviously RIP would not be
considered.
Please reply offline.
Sincerely,
John
-- John Matijevic Insight Global 305-243-5469 (office) 305-298-9876 (cell)
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