[c-nsp] Need working ASR1k pppoe police/shaping

Patrick Cole z at amused.net
Thu Jul 30 05:23:34 EDT 2015


Lukas,

As for rate limiting, when changing from 7200 to ASR, I started needing
to use the ISG/SSG way of doing it using the following radius attribute:

Cisco-Service-Info = "QU;$inbits;$inburst;$ineburst;D;$outbits;$outburst;$outeburst"

Replace variables as appropriate.

Pat

Thu, Jul 30, 2015 at 10:19:35AM +0200, Lukas Tribus wrote:

> > Hi,
> >
> > I am trying to determine a basic configuration for my Asr1k that
> > will allow me to establish some basic policing / shaping for my PPPoE
> > subscribers. I have read a lot of the cisco ISG documents and frankly
> > don't understand any of them; there isn't a clear explanation of the
> > interrelationships between policiy maps, class maps, control classes and
> > all the other numerous moving parts that all have to work in order for
> > any of it to work. No other 'examples' I have encountered online work
> > either, they all barf with various errors or simply fail to engage for
> > silent unexplained reasons. I have asked here a few times generally and
> > have not gotten a working solution. I still need some help!
> >
> > I have radius and am terminating pppoe sessions. On my c7201, I am
> > using CAR from radius to establish basic bandwidth limits per subscriber
> > (for those who need it set at the bras end, where their own cpe isn't
> > doing it for them), and this works well. I can connect via pppoe on
> > 1gbps ethernet and have the radius attributes set so that the pppoe
> > session is limited to 10mbps down / 1mbps up and it works flawlessly,
> > and is quit easy to understand and use.
> >
> > I would like to be able to replicate these results on ASR1k
> > initially where the rate limits are being established in radius only and
> > the ASR just polices the pppoe session. As a future stretch goal, I'd
> > also like to be able to do finer grained QoS and help my end users make
> > better use of their pipe.
> >
> > Does anyone have a pointer to any examples for either or both of
> > these that work on ASR1k on the IOS-XE 3.10.xx?
> 
> http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/bbdsl/configuration/xe-3s/asr1000/bba-xe-3s-asr1000-book/bba-ppoe-ses-q-rad-xe.html
> 
> Which basically boils down to:
> The following AV-pairs define the QoS policy to be applied dynamically to the session:
> "ip:sub-qos-policy-in=<name of the QoS policy in ingress direction>"
> "ip:sub-qos-policy-out=<name of egress policy>"
> 
> 
> You need to configure the policy-maps on the box first, obviously.
> 
> 
> Regards,
> 
> Lukas
> 
>  		 	   		  
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-- 
Patrick Cole <z at wwwires.com>
Senior Network Specialist
World Without Wires
PO Box 869. Palm Beach, QLD, 4221
Ph:  0410 626 630


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