From: Tom Rogers (cccie71@yahoo.com)
Date: Thu Jul 08 2004 - 02:47:59 GMT-3
Basically all these remote 20 sites at present re ATM (45mb). Since, Fa 100 cost is coming down to half, we're planning to change the topology.
I had laid down this network with 7204VXRs for ATM connectivity and a 3550emi as first switch in the rack at user lan. So I have 1 7204 and 1 3550 emi at each site.
Now with this new topology (fa handout) I just need one device. All I am going to run is pure ip traffic with EIGRP. This is all in within 200 mile radius and is not crossing any carrier nor connection to internet is in the picture.
I want the fast and max throughput on this type of connectivity and make use of full 100mb BW provided by the carrier. At the HUB (2 gig handout) I am going to connect to 6500 directly, that is not an issue.
Having said that, which direction should I lean? 3550 or 7204
Following is a sample of type of 7200 I have on each site.
cisco 7204VXR (NPE400) processor (revision A) with 114688K/16384K bytes of memory.
Processor board ID 26797215
R7000 CPU at 350Mhz, Implementation 39, Rev 3.3, 256KB L2, 4096KB L3 Cache
James <james@towardex.com> wrote:On Wed, Jul 07, 2004 at 08:54:55PM -0700, Tom Rogers wrote:
> Thank you guys for the response. I am at point where I need to make a decision between 7204 VXRs and 3550 EMIs. I am going to be given Fa 100mb handout by the provider.
> Basically I ll need to 2 Fa connections, one to the provider and the other to my lan at each site.
> I am going to have 20 such remote locations all layer 2 handouts
> (in one broadcast domain), with the hub as 2 gig handout.
> I have several 7200s and 3550s as spare.
> What should I use? Which will have the better throughput?
> thanks
>
I see, this is for a production network.
I am not sure how much of 100mb line you are looking to use, but if you don't
want to multihome, etc in the future, 3550 EMI should definately give you the
performance, as its hardware based, just watch out the system resources.
7200 Series VXR with NPE-300 or higher should be able to serve you quite well
for most applications. But if you are looking to push linerate of >= ~200Mbps
traffic to about gig worth of traffic, then NPE-G1 finally makes 7200 Series
useful again :)
Exactly how much traffic are you looking to push, not just in bits, but also in
packets is what you will need to determine. Are you looking to get multihomed
later and run BGP, etc, etc is another set of questiosn to keep in mind. I'd
personally prefer starting out with 7200 VXR in place as router, IMHO. Depends
on the NPE you have, 3550 will most likely give you more performance but at a
tough cost of smaller available resources/breathing room to work with (in terms
of feature set of the box) than with a 7200 router.
-J
-- James Jun TowardEX Technologies, Inc. Technical Lead Network Design, Consulting, IT Outsourcing james@towardex.com Boston-based Colocation & Bandwidth Services cell: 1(978)-394-2867 web: http://www.towardex.com , noc: www.twdx.net
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