RADIUS ATTRIBUTES REFERENCE GUIDE
RELEASE 14.0.R4
RADIUS Attributes Reference
Issue: 01 3HE 10793 AAAB TQZZA 01 69
26-6527-144 Alc-Tunnel-Acct-Policy Refers to a preconfigured L2TP tunnel accounting policy-name
(configure aaa l2tp-accounting-policy policy-name). L2TP
tunnel accounting (RFC 2867) can collect usage data based
either on L2TP tunnel and/or L2TP session and send these
accounting data to a RADIUS server. Different RADIUS
attributes like [66] Tunnel-Client-Endpoint, [67] Tunnel-Server-
Endpoint, [68] Acct-Tunnel-Connection, [82] Tunnel-
Assignment-ID could be used to identify the tunnel or session.
The value with tag 0 is used as default for the tunnels where the
value is not specified. Preconfigured values are used when
attribute is omitted (configure router/service vprn service-id
l2tp radius-accounting-policy). Unreferenced policy-names
or policy-names longer than the allowed maximum are treated
as host setup failures.
26-6527-204 Alc-Tunnel-DF-bit This attribute is used on an L2TP LAC only. By default, a LAC
does not allow L2TP packet fragmentation by sending L2TP
towards the LNS with the Do not Fragment (DF) bit set to 1. This
DF bit can be set to 0 to allow downstream routers to fragment
the L2TP packets. The LAC itself will not fragment L2TP
packets. Packets sent with MTU bigger than the allowed size on
the LAC egress port are dropped. This attribute is silently
ignored if RADIUS returns an Alc-Tunnel-Group attribute. In
that case, the tunnel level, group level, or as last resort the root
level configuration is used instead.
26-6527-214 Alc-Tunnel-Recovery-Method Sets the L2TP LAC failover recovery-method to be used for this
tunnel: mcs or recovery-tunnel (RFC 4951). Preconfigured
values are used when attribute is omitted (configure router/
service vprn service-id l2tp failover recovery-method).
When tunnel recovery method is set to recovery-tunnel but
LNS does not support this capability, then the system
automatically falls back to mcs.
Values outside the limits are treated as a setup failure.
26-6527-215 Alc-Tunnel-Recovery-Time Only applicable when the L2TP LAC failover recovery-method
is set to recovery-tunnel. Sets the L2TP LAC failover recovery-
time to be negotiated with LNS via L2TP failover extensions
(RFC 4951). It indicates to the LNS how long it needs to extend
its protocol retry timeout before declaring the control channel
down. Preconfigured values are used when attribute is omitted
(configure router/service vprn service-id l2tp failover
recovery-time).
Values outside the limits are treated as a setup failure.
Table 8 Wholesale-Retail: L2TP Tunneled Access Mode (Description) (Continued)
Attribute ID Attribute Name Description
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