[127707] in North American Network Operators' Group
Hardware for 50Mbs BGP feed.WAS Rate Limiting on Cisco Router
daemon@ATHENA.MIT.EDU (Dylan Ebner)
Fri Jul 9 12:43:54 2010
From: Dylan Ebner <dylan.ebner@crlmed.com>
To: "nanog@nanog.org" <nanog@nanog.org>
Date: Fri, 9 Jul 2010 16:43:09 +0000
In-Reply-To: <AANLkTinbLB6Re-gPnOyTXc-Uq01cfVtFjhvxyYTPNWvG@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Yesterday we took possession of a free 50Mb connection upgrade from one of =
our ISPs. The previous connection was 30Mbps with a partial route table via=
BGP. Other than BGP, the only other complex functions the router performs =
is access listing the CRYMU Team Bogon table and traffic shaping. We termin=
ate this into a 2811 running 12.4 with 512MB of memory. When the Access lis=
ts were applied we peaked the connection at 39Mbps and when the access list=
was removed we peaked at 43.5Mbps. The CPU was pegged at 65% with the acl =
and 50% without. Given the recent discussion about 80Mbps and a 7200, what =
would members here recommend for a 50Mb connection that we expect to grow t=
o 100Mb in the next 18 months. We are also planning on adding netflow colle=
ction in the next year as well.
We were think of upgrading to a 3900 series, but it sounds like maybe we sh=
ould be thinking bigger?
Also, how do members determine if their routers are overloaded. Besides loo=
king at memory and CPU usage are their other statistics they look at? Are t=
heir third party tools that provide some insight into the routers condition=
?
Dylan Ebner
-----Original Message-----
From: Alan Bryant [mailto:alan@gtekcommunications.com]=20
Sent: Thursday, July 08, 2010 8:33 PM
To: gordslater@ieee.org
Cc: Murphy, Jay, DOH; nanog@nanog.org
Subject: Re: Rate Limiting on Cisco Router
So you guys would not recommend the traffic shaping route on a 7206
with a NPE-G1? Is it the processor or memory that would not be able to
handle it?
I don't necessarily plan on doing anything other than limiting it at
80Mbps or whatever it is that we are capping ourselves at at the time.
On Thu, Jul 8, 2010 at 7:13 PM, gordon b slater <gordslater@ieee.org> wrote=
:
> On Thu, 2010-07-08 at 18:54 -0500, Jack Bates wrote:
>> underpowered router or poor code
>
> Agreed. So which is it? =A0:)
>
> To be fair, some IOS versions were better than others at it in my
> limited experience of that chassis.
>
> Gord
> --
> I hold you XAP
>
>
>
>
--=20
Alan Bryant | Systems Administrator
Gtek Computers & Wireless, LLC.
alan@gtekcommunications.com | www.gtek.biz
O 361-777-1400 | F 361-777-1405
