Hello List!

Now we are using Cisco 7201 routers to terminate ISG IPoE sessions (subscriber 
interface). For some sessions, we use Netflow activation through the radius 
(CoA). For the downstream subscriber traffic radius Netflow activation was 
realized by assigning the policy-map with the netflow-sampler "random 
one-out-of 1" in the class-default. For the upstream subscriber traffic we are 
using the class-map with "set qos-group 91". At the router uplink interface 
there are the policy-map with the class-map matching qos group 91 and 
netflow-sampler "random one-out-of 1".

Sample configuration:

ISG Service activated via RADIUS for sessions with netflow:
policy-map type service FLOWON
   service-policy input FLOW-IN-ON
   service-policy output FLOW-OUT-ON

Policy-map that activates the service on the session:
policy-map FLOW-OUT-ON
   class class-default
    netflow-sampler interesting-flows
policy-map FLOW-IN-ON
   class class-default
   set qos group 91

Netflow-sampler:
flow-sampler-map interesting-flows
  mode random one-out-of 1

We want to upgrade our C7201 to the Cisco ASR 1002, ESP10. But this 
configuration does not work on the ASR. Traffic enters to the class-map but 
sampler not executed. The flexible netflow works if it configured on the 
interface manually. 

Are there any options to enable or disable NetFlow using RADIUS CoA for ISG 
subscriber interface sessions on the Cisco ASR1000 routers?

The IOS version we tested is "IOS XE Version: 03.06.01.S"


---

Evgeny Zhuravlev

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