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Supported RADIUS Attribute/
Value Pairs for L2TP operation
150
Tunnel-Client-
Endpoint
66 Present for relayed L2TP, text IPv4 or IPv6 address of our address on the
outbound tunnel
Tunnel-Server-
Endpoint
67 Present for relayed L2TP, text IPv4 or IPv6 address of the far end address of
the outbound tunnel
Tunnel-Assignment-
ID
82 Present for relayed L2TP, text local L2TP tunnel ID
Tunnel-Client-Auth-
ID
90 Present for relayed L2TP, local end hostname quoted by outgoing tunnel
Tunnel-Server-Auth-
ID
91 Present for relayed L2TP, far end hostname quoted by outgoing tunnel
Note that most parameters are not included in interim and stop accounting records. The acct-session-id should
be used by accounting servers to correlate interim and stop records with the start record. The graph name could
be used, but is only available where there is a graph. If too many different graphs then that is not present. Some
exceptions apply as they can be changed by a change of authorisation RADIUS request, such as Connect-Info.
F.4. Accounting Interim
Table F.5. Accounting-Interim
AVP
No. Usage
Acct-Status-Type
40 3 Interim-Update
Acct-Delay-Time
41 Seconds since accounting data collected
Acct-Event-
Timestamp
55 Data collected time (unix timestamp)
Acct-Session-Id
44 Unique ID for session
Chargeable-User-
Identity
89 Graph name that applies, sanitised to comply with CQM graph name rules..
Connect-Info
77 Text Tx speed/Rx speed in use
NAS-Identifier
32 Configured hostname of FireBrick
NAS-IP-Address
4 NAS IPv4 address if using IPv4
NAS-IPv6-Address
95 NAS IPv6 address if using IPv6
NAS-Port
5 L2TP session ID
Acct-Input-Octets
42 Rx byte count
Acct-Input-
Gigawords
52 Rx byte count (high 4 bytes)
Acct-Output-Octets
43 Tx byte count
Acct-Output-
Gigawords
53 Tx byte count (high 4 bytes)
Acct-Input-Packets
47 Rx packet count
Acct-Output-Packets
48 Tx packet count
Tunnel-Type
64 Present for relayed L2TP sessions, L2TP
Tunnel-Medium-Type
65 Present for relayed L2TP, 1 (IPv4) or 2 (IPv6)
Tunnel-Client-
Endpoint
66 Present for relayed L2TP, text IPv4 or IPv6 address of our address on the
outbound tunnel
Tunnel-Server-
Endpoint
67 Present for relayed L2TP, text IPv4 or IPv6 address of the far end address of
the outbound tunnel