From: Nick Shah (nshah@connect.com.au)
Date: Sat Oct 12 2002 - 07:40:08 GMT-3
Brad
No one protocol is better than the other. Both have their Pros, and since
they are highly mature protocols, they really dont have that many cons. A
few facts related to both of them, from an operational perspective ...
- OSPF is more CPU intensive than EIGRP
- EIGRP is a Cisco proprietory protocol, so if you are using non-cisco
routers/devices in your network OSPF is your only choice.
- MPLS capability, if desired, leaves you only OSPF as the choice (and ISIS,
of course). I had heard that there was some work happening with making EIGRP
mpls capable (the TLV functionality is currently absent).
- OSPF requires more management (even for medium sized networks), EIGRP is
straightforward for medium sized
networks (less mgmt. intensive)
- OSPF has no scalability limits, with EIGRP you really have to do proper
summarization & stub routing etc. to achieve the scalability of OSPF (so as
network size grows, you will find that the complexity working with EIGRP
increases)
- EIGRP has faster convergence than OSPF (very slightly, but yet it beats
OSPF at speed)
Now a couple of cons..
- OSPF's LSA flooding can sometimes be too much for a lesser powered router
and low bandwidth links, well so is EIGRP SIA (stuck in active). However in
a well laid out network (use stub areas for OSPF , summarization boundaries&
stub routing in EIGRP) thats not too much of a problem.
- Area mgmt. with OSPF can be quite cumbersome, however with a proper
design, the complexity is paid off with increased stability.
So if your or customers network is still in design stage, you can weigh the
pros & cons and decide for urself.
Thanks
Nick
----- Original Message -----
From: Hung, Sing-Yu <Sing-Yu.Hung@pccw.com>
To: <ccielab@groupstudy.com>
Sent: Saturday, October 12, 2002 4:48 PM
Subject: OSPF Or EIGRP
> Dear,
>
> I just want to know which protocol is better? OSPF or EIGRP. Because
> my client want to change from OSPF to EIGRP without any reason. And May I
> have your suggestion?
>
> Bradford Hung
>
> Pacific Century CyberWorks
> Tel: 288 33125
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