RADIUS ATTRIBUTES REFERENCE GUIDE
RELEASE 14.0.R4
RADIUS Attributes Reference
Issue: 01 3HE 10793 AAAB TQZZA 01 241
65 Tunnel-Medium-Type Which transport medium to use when creating a tunnel for those
protocols (such as L2TP) that can operate over multiple transports. This
attribute is mandatory on LAC Access-Accept and needs to be IP or
IPv4. The same attribute is included on LNS in the Access-Request and
Acct-Request if configure subscriber-mgmt authentication-
policy|radius-accounting-policy policy name include-radius-
attribute tunnel-server-attrs is enabled on LNS. For L2TP Tunnel/Link
Accounting this attribute is always included on LAC and LNS.
66 Tunnel-Client-
Endpoint
The dotted-decimal IP address of the initiator end of the tunnel.
Preconfigured values are used when attribute is omitted (configure
router/service vprn service-id l2tp local-address). If omitted in
Access Accept on LAC and no local-address configured, then the
address is taken from the interface with name system. This attribute is
included on LNS in the Access-Request and Acct-Request only if
configure subscriber-mgmt authentication-policy|radius-
accounting-policy policy name include-radius-attribute tunnel-
server-attrs is enabled on LNS. For L2TP Tunnel/Link Accounting this
attribute is always included on LAC and LNS as untagged.
67 Tunnel-Server-
Endpoint
The dotted-decimal IP address of the server end of the tunnel and is on
the LAC the dest-ip for all L2TP packets for that tunnel.
68 Acct-Tunnel-
Connection
Indicates the identifier assigned to the tunnel session. For Tunnel start/
stop it is a concatenation, without delimiter, of LAC-tunnel-id (4 bytes)
and LNS-tunnel-id (4 bytes) were the LAC-tunnel-id maps to the hex
value of L2TP AVP 9 AssignedTunnelId from SCCRQ and LNS-tunnel-
id maps to the hex value L2TP AVP 9 AssignedTunnelId in SCCRP.
Unknown tunnel-ids (Tunnel Reject and Tunnel Link Reject) are
reported as 0000 or ffff. For Tunnel Link Start/Stop it maps to the integer
Call Serial Number from ICRQ L2TP AVP 15 Call Serial Number.
The default format of the attribute can be changed with configure aaa
l2tp-accounting-policy policy-name acct-tunnel-connection-fmt
ascii-spec.
82 Tunnel-Assignment-
ID
Indicates to the tunnel initiator the particular tunnel to which a session
is to be assigned. Some tunneling protocols, such as PPTP and L2TP,
allow for sessions between the same two tunnel endpoints to be
multiplexed over the same tunnel and also for a given session to utilize
its own dedicated tunnel.
Table 72 L2TP Tunnel Accounting (Description) (Continued)
Attribute ID Attribute Name Description
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