Appropriate Router For a 100Mb WAN Circuit

Unanswered Question
May 7th, 2007

I'm trying to figure out what router would be able to route fast enough to handle a 100Mb WAN circuit. I was reading the 3800 series router blurb which says "Built for performance, the Cisco 3800 Series routers deliver multiple concurrent services up to wire-speed T3/E3 rates". I don't know if that means it can handle the equivalent of multiple 45Mb circuits or a total of 45Mb.

I'm told this circuit will be delivered to us as standard 100Mb Ethernet using an RJ-45 connection. I was wondering if it would be dumb to just use a switch seeing as they seem to most of the features of a router these days.

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Manoj Wadhwa Mon, 05/07/2007 - 14:06

If you are using 100 MB as your WAN link, it would most probably be a fiber link rather than a standard RJ45 connection. We have 100 MB internet link on one of our routers. Its using a fiber connection and the router model used is Cisco 3825.

Cheers!!!

- Manoj

jasonrandolph Mon, 05/07/2007 - 14:35

What kind of hand-off are we talking? Direct Ethernet drop? If so, a L3 switch would be just fine unless you require features that only a router cold provide.

informationage Wed, 05/09/2007 - 10:23

I would suggest a 7200 VXR if you have the funds. We have a 100Mb ethernet drop with Cogent that absolutely killed some 3640s.

Wilson Samuel Wed, 05/09/2007 - 11:57

Hi,

If you want to get any interface of upto 100 Mbps, you should you ahead with 7200 VXR with atleast NPE-G1 (which can take care of 100Mbps Interfaces and the processing speed required by the processor).

Furthermore, you may confirm the same by visiting the Data Sheets at

7200VXR Datasheet:-

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http://www.cisco.com/en/US/products/hw/routers/ps341/products_data_sheet09186a008008872b.html

NPE-G1 Data Sheet:-

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http://www.cisco.com/en/US/products/hw/routers/ps341/products_data_sheet09186a00800c6bd6.html

Hope this helps,

please rate.

Kind Regards,

Wilson Samuel

Paolo Bevilacqua Wed, 05/09/2007 - 14:02

If there are not too many features, 100mbps can be handled well by an NPE-400 as well. NPE-G1 and G2 are really more for gigabits speeds.

Hope this helps, please rate post if it does!

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