CIsco 7206VXR w/NPE-G1 Question

Fri Jan 30 17:14:17 UTC 2004

Do you get commission from Juniper?

Matt.

-----Original Message-----
From: alex at pilosoft.com [mailto:alex at pilosoft.com]
Sent: 30 January 2004 16:51
Cc: nanog at merit.edu
Subject: RE: CIsco 7206VXR w/NPE-G1 Question

Keep in mind, 72xx is still flow-based, so you need to count *both* shared 
fabric capacity (aka PCI buses) and capacity of NPE to establish flows 
(aka pps rate).

NPE-G1 might probably route 3*GE, without any services and if all 3GE are 
in a single flow, but will melt down at a face of one-packet-per-flow DDoS 
(read: "Nachi" worm) at a far lower rate (I'd be surprised if it sustains 
200kpps DDoS traffic, which can be as low as 150Mbit bandwidth). 

That is of course, as opposed to Juniper, which is truly line-rate at any
interface, with any services, at any composition of traffic.

-alex

On Fri, 30 Jan 2004 Jack.W.Parks at alltel.com wrote:

> 
> Does anyone have definitive speed results on the 3 "built-in" Gig ports
> on the NPE-G1?  I know that they aren't attached to the PCI Buses, and
> don't consume bandwidth points, but all of that is mute.  Can all three
> of the ports do line rate Gig?  The Gig PA is limited to 400Mbps.  I
> have seen posts that allude to the fact the max throughput on the 3 Gigs
> are 800Mbps.  It's is like a big mystery that cannot be solved.  With a
> "J" M7i, I know I'm going to get line rate per port up to the total
> forwarding capacity of the FPC.
> 
> We are trying to create a comparison matrix and any info you have would
> be great.
> 
> Jack
> 
> 
> -----Original Message-----
> From: owner-nanog at merit.edu [mailto:owner-nanog at merit.edu] On Behalf Of
> Simon Hamilton-Wilkes
> Sent: Friday, January 30, 2004 9:36 AM
> To: nanog at merit.edu
> Subject: RE: CIsco 7206VXR w/NPE-G1 Question
> 
> 
> 
> One more interesting feature - if you need a 4th GigE port, you can add
> the GigE I/O card which still uses none of the bus bandwidth points.
> The buses are fine for OC3 and below...
> 
> 
> Simon
> 
>
****************************************************************************
**************
> The information contained in this message, including attachments, may
contain 
> privileged or confidential information that is intended to be delivered
only to the 
> person identified above. If you are not the intended recipient, or the
person 
> responsible for delivering this message to the intended recipient, ALLTEL
requests 
> that you immediately notify the sender and asks that you do not read the
message or its 
> attachments, and that you delete them without copying or sending them to
anyone else. 
> 

------------------------------------------------------------------------------
Live Life in Broadband
www.telewest.co.uk

The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material.
Statements and opinions expressed in this e-mail may not represent those of the company. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender immediately and delete the material from any computer.

==============================================================================