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24-port NWay Ethernet Switch User’s Guide
28 Switch Management Concepts
♦
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
transitions 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 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 Storm This trap is sent whenever the port
reaches the broadcast storm rising or falling
threshold.
MIBs
Management information and counters are stored in the
Switch in the Management Information Base (MIB). The
Switch uses the standard MIB-II Management Information