•Authentication Failure This trap signifies that someone has tried to logon to the switch using an invalid SNMP community string. The switch automatically stores the source IP address of the unauthorized user.
•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
•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
If you use a
Packet Forwarding
The Switch enters the relationship between destination MAC or IP addresses and the Ethernet port or gateway router the destination resides on into its forwarding table. This information is then used to forward packets. This reduces the traffic congestion on the network, because packets, instead of being
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