10/100 Fast Ethernet Switch User’s Guide
Switch Management
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reconfigured and hardware systems are rebooted. A cold
start is different from a factory reset.
♦
Authentication Failure
: This trap signifies that an
addressee (or manager/ user) on the Switch is not a valid
user of the Switch and may have entered an incorrect
community name.
♦
New Root
: This trap indicates that the Switch has
become the new root of the Spanning Tree, the trap is sent
by a bridge soon after its election as the new root. This
implies that upon expiration of the Topology Change Timer
the new root trap is sent out immediately after the Switch’s
selection as a new root.
♦
Topology Change
: A Topology Change trap is sent by
the Switch when any of its configured ports tranisitions
from the Learning state to the Forwarding state, or from the
Forwarding state to the Blocking state. The trap is not 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
enter the partition mode (or automatic partitioning, port
disable) when more than thirty-two collisions occur while
transmitting.
MIBs
The information stored in the Switch is known as the
Management Information Base (MIB). The Switch uses the
standard MIB-II Management Information Base module.
Consequently, MIB values inside the Switch can be retrieved from
any SNMP-based network manager. In addition to the standard
