Table: L2TP tunnel accounting behavior describes L2TP tunnel accounting behavior along with some key RADIUS attributes (apply for both LAC and LNS):
| Act-packet | When | Key attributes |
|---|---|---|
Tunnel-Start |
A new L2TP tunnel is created |
Acct-Session-ID Event-Timestamp Tunnel-Type:0 Tunnel-Medium-Type:0 Tunnel-Assignment-Id:0 Tunnel-Client-Endpoint:0 Tunnel-Client-Auth-Id:0 Tunnel-Server-Endpoint:0 Tunnel-Server-Auth-Id:0 |
Tunnel-Reject |
A new L2TP tunnel creation failed |
Acct-Session-Id Event-Timestamp Tunnel-Type:0 Tunnel-Medium-Type:0 Tunnel-Assignment-Id:0 Tunnel-Client-Endpoint:0 Tunnel-Client-Auth-Id:0 Tunnel-Server-Endpoint:0 Acct-Terminate-Cause |
Tunnel-Stop |
An established L2TP tunnel is removed |
Acct-Session-Id Event-Timestamp Tunnel-Type:0 Tunnel-Type:0 Tunnel-Medium-Type:0 Tunnel-Assignment-Id:0 Tunnel-Client-Endpoint:0 Tunnel-Client-Auth-Id:0 Tunnel-Server-Endpoint:0 Tunnel-Server-Auth-Id:0 Tunnel-Server-Auth-Id:0 Acct-Session-Time Acct-Input-Gigawords Acct-Input-Octets Acct-Output-Gigawords Acct-Output-Octets Acct-Input-Packets Acct-Output-Packets Acct-Terminate-Cause |
Tunnel-Link-Start |
An L2TP session is created |
User-Name Acct-Session-Id — This is the same as Acct-Session-id in access-request of host auth Event-Timestamp Service-Type — Framed Class Tunnel-Type:0 Tunnel-Medium-Type:0 Tunnel-Assignment-Id:0 Tunnel-Client-Endpoint:0 Tunnel-Client-Auth-Id:0 Tunnel-Server-Endpoint:0 Tunnel-Server-Auth-Id:0 Acct-Tunnel-Connection — See RADIUS attributes value considerations |
Tunnel-Link-Reject |
A new L2TP session creation is failed |
Acct-Session-Id — Should be as same as Acct-Session-id in access-request of host auth Event-Timestamp Tunnel-Type:0 Tunnel-Medium-Type:0 Tunnel-Assignment-Id:0 Tunnel-Client-Endpoint:0 Tunnel-Client-Auth-Id:0 Tunnel-Server-Endpoint:0 Acct-Terminate-Cause Acct-Tunnel-Connection |
Tunnel-Link-Stop |
An established L2TP session is removed |
User-Name Acct-Session-Id — Should be as same as Acct-Session-id in access-request of host auth Event-Timestamp Service-Type — Framed Class Tunnel-Type:0 Tunnel-Medium-Type:0 Tunnel-Assignment-Id:0 Tunnel-Client-Endpoint:0 Tunnel-Client-Auth-Id:0 Tunnel-Server-Endpoint:0 Tunnel-Server-Auth-Id:0 Acct-Tunnel-Connection Acct-Session-Time Acct-Input-Gigawords Acct-Input-Octets Acct-Output-Gigawords Acct-Output-Octets Acct-Input-Packets Acct-Output-Packets Acct-Tunnel-Packets-Lost Acct-Terminate-Cause |
Notes:
Errors occur if there are multiple hosts sharing the same sla-profile instance and then these hosts go to different tunnel.
7750 SRs have an internal limitation of 500 pps for accounting messages. This feature shares the same limitation.