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DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
Switch Management and Operating Concepts 55
sent if a new root trap is sent for the same
transition.
• Link Change Event This trap is sent
whenever the link of a port changes from link
up to link down or from link down to link up.
• Port Partition This trap is sent whenever the
port state enters the partition mode (or
automatic partitioning, port disable) when
more than thirty-two collisions occur while
transmitting at 10Mbps or more than sixty-
four collisions occur while transmitting at
100Mbps.
• Broadcast\Multicast Storm This trap is
sent whenever the port reaches the threshold
(in packets per second) set globally for the
switch. Counters are maintained for each
port, and separate counters are maintained
for broadcast and multicast packets. The
switch’s default setting is 128 kpps for both
broadcast and multicast packets.
MIBs
Management and counter information are stored in the Switch
in the Management Information Base (MIB). The Switch uses
the standard MIB-II Management Information Base module.
Consequently, values for MIB objects can be retrieved from any
SNMP-based network management software. In addition to the
standard MIB-II, the Switch also supports its own proprietary
enterprise MIB as an extended Management Information Base.
These MIBs may also be retrieved by specifying the MIB’s