Is a 2811 big enough to efficiently utilize 6Mb MPLS?

Unanswered Question
Jan 22nd, 2008

We are beginning to install MPLS. We would like to install MPLS over a DS3 between a 7206 and a 2811. I am concerned that we will see performance issues with the 2811. Any ideas? Is there anyone doing this?

I have this problem too.
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sultan-shaikh Mon, 01/28/2008 - 21:56

Hi,

The Product Sheet says that 2811 supports 1.536 Mbps in Process Switching and 61.44 Mbps with CEF Switching mode.

But I would still suggest that you should go for a higher model to accommodate any further upgrade in bandwidth.

Cheers

mohammedmahmoud Mon, 01/28/2008 - 22:44

Hi James

Agree with Sultan, and below is the router performance sheet, as for the 2811 we have used it as a small PE in some situations, and i think we have utilized around 8M BW with no performance issues, but again as Sultan has pointed out you must consider the scalability issue.

http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf

BR,

Mohammed Mahmoud.

Joseph W. Doherty Tue, 01/29/2008 - 17:25

A full DS3 might be a bit much for a 2811.

Had the question whether we could connect one as a CE to a fractional DS3 providing 10 Mbps. Before deployment, found we could push about 20 Mbps through the box where it hit 100% CPU. After deployment, found it works well on the 10 Mbps hitting about 50% CPU. (This seems in the same ballpark with the other posters.)

shahzad-ali Tue, 01/29/2008 - 21:18

Hi NetPro,

Does 2811 support DS3? I think, 3825 support frac and 3845 full DS3. Could someone confirm this please?

Regards,

-SA

jobegates Thu, 01/31/2008 - 12:18

I setup a 2851 with a frac DS3. I think you have to go to a 3800 for Full.

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