New 100mbps Internet connection

[Steven Williams]

Can a Cisco 2921 handle a 100mbps connection plus operate BGP with partial updates? I am worried about the CPU.                  

[jawad-mukhtar]

Please find this Perfromance sheet.

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

Based on your required bandwidth / packet rates you should be able to choose which range to go for

[Leo Laohoo]

Can a Cisco 2921 handle a 100mbps connection plus operate BGP with partial updates?

Partial updates?  No it won't.  The 2921 won't have enough DRAM to accomodate partial BGP updates.  You'd need a minimum of 3925E/3945E.

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

leolaohoo wrote:
Can a Cisco 2921 handle a 100mbps connection plus operate BGP with partial updates?
Partial updates?  No it won't.  The 2921 won't have enough DRAM to accomodate partial BGP updates.  You'd need a minimum of 3925E/3945E. 

How much RAM you believe is required, as the 2900 series can go up to 2GB?

[Leo Laohoo]

Nah.  You're right there, Joseph.  2 Gb for partial BGP would be more than enough.

But I'd still recommend a 3925E/3945E due to bandwidth capabilities.

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Cisco recommends the 2921 for up to 50 Mbps, WAN.  Cisco's recommendations tend to be conservative to handle even worst case, but from their whitepaper (attached), 100 Mbps looks to be borderline.