Alcatel-Lucent 7750 Reference Manual page 64

Wholesale-Retail — L2TP Tunneled Access Mode
Table 8: Wholesale-Retail: L2TP Tunneled Access Mode (description) (Continued)
Attribute ID
26-6527-97 Alc-Tunnel-Challenge
26-6527-100 Alc-Serv-Id
26-6527-101 Alc-Interface
26-6527-104 Alc-Tunnel-Serv-Id
Page 64
Attribute Name
Defines if tunnel authentication (challenge-response) is to be used or
not. L2TP tunnel-authentication is based on RFC1994 CHAP
authentication and requires the shared-secret defined in attribute [69]
Tunnel-Password. The value with tag 0 is used as default for the
tunnels where the value is not specified. When the attribute is
omitted and no [69] Tunnel-Password attribute is specified, a pre-
configured value is used (configure router/service vprn <service-
id> l2tp challenge). When the attribute is omitted and a [69] Tunnel-
Password attribute is specified, then the value 'always' is used. When
the attribute has the value 'always', no [69] Tunnel-Password
attribute is specified and no pre-configured value exists for the
password, then the tunnel setup fails. Values outside the Limits are
treated as a setup failure.
The ies/vprn <service-id> on LNS node where the PPP sessions are
established (configure service ies/vprn <service-id> subscriber-
interface <name> group-interface <name>. Pre-configured values
are used if attribute is omitted (configure subscriber-mgmt local-
user-db ppp host interface <ip-int-name> service-id <service-id>
or configure router/service vprn <service-id> l2tp group ppp
default-group-interface <ip-int-name> service-id <service-id>).
Values above the Limits or unreferenced are treated as a setup
failure.
Refers to the group interface <name> on LNS node only where the
PPP sessions are established (configure service ies/vprn <service-
id> subscriber-interface <ip-int-name> group-interface <ip-int-
name>). Pre-configured values are used if the attribute is omitted
(configure subscriber-mgmt local-user-db <local-user-db-name>
ppp host interface <ip-int-name> service-id <service-id> or
configure router/service vprn <service-id> l2tp group ppp
default-group-interface <ip-int-name> service-id <service-id>).
Alc-interface names longer than the maximum allowed value are
treated as session setup failures.
The service-id from which the tunnel should be established, enables
the tunnel origin to be in a VPRN (VRF). The default value = Base.
Values above the Limits or unreferenced are treated as a setup
failure.
7750 SR RADIUS Attributes Reference Guide
Description