[AusNOG] Cisco router - In Session Shaping

McDonald Richards macca at vocus.com.au
Fri Jan 16 16:39:07 EST 2009

Any L2TP termination box that supports RFC3576 (specifically Change of
Authorisation) should allow you to modify subscriber policy on-the-fly. This
would of course need to be coupled with something to detect the out of quota
usage and generate the RADIUS packet but a quick google reveals that even
freeradius supports it so any commercial one should. I think a Cisco box
requires a 12.2SB IOS as per Simon's post below (and probably an equivalent
'feature license'). NFI what version Redback/Juniper would require but you
can bet the feature will be there since the big C have it.






From: ausnog-bounces at lists.ausnog.net
[mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of jim at bbw.net.au
Sent: Friday, 16 January 2009 4:23 PM
To: ausnog at ausnog.net
Subject: Re: [AusNOG] Cisco router - In Session Shaping


Hi Simon, 

I am also interested in what solutions people recommend, we have a system
that kicks users off the LNS once they have reached their plan quota limit
and implements a shaping profile using Cisco AVpairs in radius when they

I agree there should be a better way to do it but as of yet have not found a
viable way of performing it so I'd be interested in a nicer solution if
anyone has already found one. 

Jim Woodward
Network Operations Manager
Broadband Wireless Pty Ltd
ABN 78 096 428 634

Level 1, 29 Elizabeth St,
Hobart 7000
+61 (3) 6234 1288
+61 (3) 6234 3874


"Simon" <simonl at bigair.net.au> 


<ausnog at ausnog.net> 


01/16/2009 02:48 PM 


[AusNOG] Cisco router - In Session Shaping



Hi everyone, 
On our systems we use Cisco routers, and we need to slow users once they
have exceeded their monthly download limit. We have separate peak and
off-peak time periods so sometimes we need to toggle the user's speed a
couple of times per day. Kicking the user out of session to apply the new
limit is not a good solution, which leads to unhappy customers. I know
people who have solved this problem with: 
* 12.2SB IOS 
* ISG 
Are there any other solutions besides those? 
AusNOG mailing list
AusNOG at lists.ausnog.net

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