This document describes troubleshooting the ISG Accounting feature applied to a PPPoE Session with a Traffic Class "Internet" on the Cisco ASR1000 platform running IOS-XE.
Included in this document is Configuration, verification of the feature in IOS-XE, verification of programming in the Linux Kernel, verification of programming of the the feature in hardware (QFP/ESP) and the debugs associated from Session initialisation to completion.
The ISG accounting feature gathers usage statistics on the overall session or service of the client.
In this example, ISG accounting was applied to the traffic-class Internet (Service) which was applied via the RADIUS Attributes from the User and Service Profile on the RADIUS Server.
Below is a configuration example of ISG Session and Service Accounting.
“The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.”
RADIUS User and Service Profile Definition used below
#### User Profile Definition ####
PPPoE-Client-1 Cleartext-Password := "cisco"
Framed-Protocol = PPP,
Service-Type = Framed,
Cisco-Account-Info += "AINTERNET",
#### Internet Service Profile Definition #### DEFAULT Prefix == "INTERNET", Auth-Type := Accept Cisco-AVPair += "ip:traffic-class=in access-group name ACL-Internet-In",
show platform hardware qfp active feature subscriber session id <session>
BRAS-ASR1K#show platform hardware qfp active feature subscriber session id 16908315
Session ID: 16908315
EVSI type: TC_FLOW
SIP Segment ID: 0x5000004d56
SIP Segment type: PPPOE
FSP Segment ID: 0x0
FSP Segment type: ----
QFP if handle: 81
QFP interface name: EVSI16908315
SIP TX Seq num: 0
SIP RX Seq num: 0
FSP TX Seq num: 0
FSP RX Seq num: 0
Conditon Debug: 0x00000000
Accounting feature enabled
show platform hardware qfp active feature subscriber state feature accounting
BRAS-ASR1K#show platform hardware qfp active feature subscriber state feature accounting
Subscriber Accounting State:
Total Install: 2
Total Remove : 1
Total Query : 0
Total Update : 0
Total Report (in) : 0
Total Report (out): 0
Total Report Failed (in) : 0
Total Report Failed (out): 0
QFP Number 0:
SBS handle (input dir): 0x111bd9a8
SBS handle (output dir): 0x111bda80
Debugs collected for PPP session with ISG Accounting applied.
Warning: Use debug commands with caution. In general, it is recommended that these commands only be used under the direction of your router technical support representative when troubleshooting specific problems. Enabling debugging can disrupt operation of the router when internetworks are experiencing high load conditions. Hence, if logging is enabled, the access server can intermittently freeze as soon as the console port gets overloaded with log messages.