Cisco2811 and 50Mb throughput on WAN

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Apr 2nd, 2008
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I have a customer that has Cisco2811. They currently are using a 10Mb WAN connection. They need to increase that to 50Mb. Can this router support that bandwidth?

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Overall Rating: 5 (2 ratings)
lamav Wed, 04/02/2008 - 19:56
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If the router has a FastEthernet or Gigabit ethernet card, then yes.

FastE is 100Mb and GigE is 1,000 Mb

marcoleman Wed, 04/02/2008 - 19:59
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yes the router has the HWIC. My concern was backplane. I heard that the 2811 might only support up to 20mb throughput.


Joseph W. Doherty Thu, 04/03/2008 - 05:58
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50 Mbps of substained throughput is alot, and I believe too much, for a 2811.

The limitation isn't the backplane, but the performance of the CPU.

Worked with a customer who wanted to know whether a 2811 could drive a fractional DS-3. Did some crude peformance testing, was able to blast about 40 Mbps through a 2811. This drove the cpu to 100%. (Test traffic was unidirectional.)

Did place it in service with the DS-3. Most of the time, works very well as long as substained traffic is 15 Mbps or less, duplex.


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