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VLAN Termination Causes and Code Values

When a VLAN event terminates a subscriber session, causing a RADIUS Acct-Stop message to be issued, the RADIUS Acct-Terminate-Cause attribute (49) reports the cause or reason for the termination. This attribute is included only in RADIUS Acct-Stop messages. The termination cause is conveyed as a code value in the attribute. RFC 2866, RADIUS Accounting, define the standard mapping between 18 code values and termination causes.

Junos OS defines a set of internal termination cause codes that are mapped to the RFC-defined code values. When a subscriber session is terminated, the router logs a message for the internal termination cause and logs another message for the RADIUS Acct-Terminate-Cause attribute. You can use the logged information to help monitor and troubleshoot terminated sessions.

Table 1 lists the default mapping between the internal identifier for VLAN termination causes and the code values that represent them in the RADIUS Acct-Terminate-Cause attribute (49).

Note:

You can remap the internal identifiers to a custom code value in the range 1 through 4,294,967,295 by using the terminate-code statement at the [edit access] hierarchy level. You can view the current mapping by issuing the show network-access terminate-code vlan detail command.

Table 1: Default Mapping Between VLAN Termination Causes and Code Values

Internal VLAN

Termination Cause

RADIUS Acct-Terminate-Cause Attribute

 

Code Value

RADIUS Termination Cause

vlan admin-logout

6

VLAN session termination initiated by the subscriber being administratively logged out.

vlan admin-reconnect

16

VLAN session termination initiated by the subscriber being administratively reconnected.

vlan other

9

VLAN session termination initiated by an otherwise undefined cause.

vlan out-of-band-access-interface-down

2

VLAN out-of-band session termination initiated by the access-facing interface going down.

vlan out-of-band-admin-access-interface-down

6

VLAN out-of-band session termination initiated by the access-facing interface being brought down administratively.

vlan out-of-band-admin-core-interface-down

6

VLAN out-of-band session termination initiated by the core-facing interface being brought down administratively.

vlan out-of-band-ancp-port-down

1

VLAN out-of-band session termination initiated by the receipt of an ANCP Port Down message.

vlan out-of-band-ancp-port-vlan-id-change

1

VLAN out-of-band session termination initiated by a change in the port VLAN ID, which is treated as a logical Port Down message.

vlan out-of-band-core-interface-down

2

VLAN out-of-band session termination initiated by the core-facing interface going down.

vlan out-of-band-l2-wholesale-no-free-vlans

15

VLAN out-of-band session termination initiated by the lack of any remaining available VLAN IDs.

vlan profile-request-error

9

VLAN session termination initiated by an error when requesting the dynamic profile associated with the VLAN range.

vlan sdb-error

9

VLAN session termination initiated by an error in the session database.

vlan subscriber-activate-error

9

VLAN session termination initiated by an error while attempting to activate the subscriber services for the session.