Re: Cisco 7513 Bandwidth Points

2005-01-14 Thread Rodney Dunn

Noel, Tom,

There are limitations on the 75xx's depending on the
RSP/VIP setup you have.

It's a distributed platform that does software
based forwarding when running in dCEF mode.
All packet are switched by the VIPs and never
touch the RP.  Therefore the switching capacity
is a function of the speed of the VIPs and the
features you have enabled in the packet path
(ACL's, QOS, etc..).

The short answer is there isn't a bandwidth concept
like there is with the 72xx.  However, you can
overload the VIP with the right PA combination and
features. The matrix of performance will depend on
the features, ppps, and VIP type.

There have been extensive discussions
about this on cisco-nsp so if there are further questions
I'd suggest we move it over there and I can add more.

Thanks,
Rodney

On Thu, Jan 13, 2005 at 09:09:28PM -0500, Noel Montales wrote:
 
 On-List replies perhaps may be usefull.. Or could you post a summary of
 your findings?
 
 Regards,
 Noel Montales
 
 Claydon, Tom said:
 
  Hello,
 
  We are moving from a Cisco 7206 to a 7513, and I was wondering if we
  will be limited by bandwidth points on the 7513 (as we are with the
  7206). From the sparse documentation I've found so far, it doesn't
  appear that this limitation exists in the 7513, correct?
 
  Off-list replies are welcomed.
 


Cisco 7513 Bandwidth Points

2005-01-13 Thread Claydon, Tom

Hello,

We are moving from a Cisco 7206 to a 7513, and I was wondering if we
will be limited by bandwidth points on the 7513 (as we are with the
7206). From the sparse documentation I've found so far, it doesn't
appear that this limitation exists in the 7513, correct?

Off-list replies are welcomed.

Thanks,
 
= TC
 
--
Tom Claydon, IT/ATM Network Engineer
Dobson Telephone Company
phone: (405) 391-8201  cell: (405) 834-0341




Re: Cisco 7513 Bandwidth Points

2005-01-13 Thread Jon Lewis

On Thu, 13 Jan 2005, Claydon, Tom wrote:

 We are moving from a Cisco 7206 to a 7513, and I was wondering if we
 will be limited by bandwidth points on the 7513 (as we are with the
 7206). From the sparse documentation I've found so far, it doesn't
 appear that this limitation exists in the 7513, correct?

This is really more a cisco-nsp type question.

To answer, no, the 7500 doesn't have the bandwidth points issue the 7200s
have.  Each VIP has its own PCI bus(es) for PAs and then connects to the/a
1gbit cybus.

7500s have a whole new set of scaling issues.  :)

As long as you don't believe the performance numbers someone at cisco made
up for the 7500 VIP datasheets, you'll be fine.

--
 Jon Lewis   |  I route
 Senior Network Engineer |  therefore you are
 Atlantic Net|
_ http://www.lewis.org/~jlewis/pgp for PGP public key_


Re: Cisco 7513 Bandwidth Points

2005-01-13 Thread Noel Montales

On-List replies perhaps may be usefull.. Or could you post a summary of
your findings?

Regards,
Noel Montales

Claydon, Tom said:

 Hello,

 We are moving from a Cisco 7206 to a 7513, and I was wondering if we
 will be limited by bandwidth points on the 7513 (as we are with the
 7206). From the sparse documentation I've found so far, it doesn't
 appear that this limitation exists in the 7513, correct?

 Off-list replies are welcomed.