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B. SNMP MIBs and Traps, and RMON Alarm Defaults
B-10
September 2002 9128-A2-GB20-80
Traps: linkUp and linkDown
These traps are supported on the following interfaces:
Network, DSX-1, and synchronous data ports – Physical sublayer interfaces
Frame relay logical link layer interfaces
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-5. linkUp and linkDown Traps
Trap What It Indicates Possible Cause
linkDown A failure in one of the
communication interfaces
has occurred.
A failure in one of the
communication interfaces has
occurred.
linkUp One of the failed
communication interfaces is
up and operational.
One of the failed communication
interfaces is up and operational.