Trap linkUp and linkDown, Physical Sublayer

B. SNMP MIBs, Traps, and RMON Alarm Defaults

Trap: linkUp and linkDown

These traps are supported on the following interfaces:

Physical sublayer interfaces: Network and synchronous data ports

Logical link layer interfaces: Frame relay

Table B-5. linkUp and linkDown Traps

Trap	What It Indicates

linkDown	A failure on one of the communication interfaces has occurred.

linkUp	One of the failed communication interfaces is up and operational.

The linkUp and linkDown variable-bindings are in Table B-6, linkUp and linkDown Variable-Bindings.

Physical and logical sublayers are represented by the entry in the MIB II Interfaces Table. It is supported by a combination of the Frame Relay Extension MIB and either the Frame Relay Services MIB or the Frame Relay DTEs MIB.

Table B-6. linkUp and linkDown Variable-Bindings (1 of 3)

Interface

Variable-Bindings

Possible Cause

Physical Sublayer

Network

(Supported by an entry in the MIB-II Interfaces Table.)

ifIndex (RFC 1573)

ifAdminStatus (RFC 1573)

ifOperStatus (RFC 1573)

devLastTrapString (devHealthAndStatus.mib)

linkDown – One or more alarm conditions are active on the interface. Alarm conditions include:

–Loss of Signal (LOS)

– Signal-to-Noise (S/N) Net Margin Threshold exceeded

Strings:

‘$ifString down.’

(e.g., ‘Network DSL down due to LOS.’)

‘$ifString administratively shut down.’ (Due to an intentional shutdown.)

linkUp – No alarms on the

interface. String: ‘$ifString up.’

B-8

December 2002

9700-A2-GB20-20

9720, 9788 specifications

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Paradyne 9788 Trap linkUp and linkDown, Table B-5. linkUp and linkDown Traps What It Indicates

Models: 9720 9788