[c-nsp] LNS router options

[John Elliot]

Thanks Tony - Always a hard thing to gauge, but initially 100 ADSL2 tails, plus some (~10) 10M eth tails...what that equates to in aggregate traffic is up for debate ;)

They are "business" users, so do not expect the services to be flogged, but I like to over engineer just in case.

Ill have a look at the 7301/7201 also - thanks



Date: Thu, 12 Jan 2012 20:37:36 -0800
From: td_miles at yahoo.com
Subject: Re: [c-nsp] LNS router options
To: johnelliot67 at hotmail.com; cisco-nsp at puck.nether.net

Hi John,
The main thing you need to look at is not the number of DSL/PPP sessions but the aggregate traffic (Mbps) through the router. This will drive your decision.
Any idea on the amount of traffic you're expecting across your DSL sessions ?
If you're looking at 3RU then you'd probably be better sticking with 7200. You could always go with 7201/7301 (both 1RU) if you're short on space and don't need anything more than a few GE ports.

regards,Tony.

 
       From: John Elliot <johnelliot67 at hotmail.com>
 To: cisco-nsp <cisco-nsp at puck.nether.net> 
 Sent: Friday, 13 January 2012 2:07 PM
 Subject: Re: [c-nsp] LNS router options
   

Thanks Hotmail - Ill resend to accommodate the (lack of) formatting..

Have a potential new pop that we are looking to terminate dsl tails(+MPLS,MPBGP, single Inet(full table), and some ethernet tails) - Have some space restrictions(RU)

Looking for some "real life" experience with the following platforms(Or
 alternatives?) on how many dsl tails they can support:

2851 - Cisco stated performance: 220,00PPS (2RU)

2951 - Cisco stated performance: 580,000PPS (2RU) but assume quite $$?

3845 - Cisco stated performance: 500,00PPS (3RU?)

3925 - Cisco stated performance: 833,000PPS(3RU?) but assume quite $$?


(NB would max out the ram on them for the bgp table)

Initially we are looking at ~100 dsl tails, with growth to 150 in 6months....are we better off looking at the old faithful 7200?

Cheers