D-Link DES-3624 - Switch - Stackable User manual - Mibs
Stackable NWay Ethernet Switch User’s Guide
♦ 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 a port is
partitioned as a result of more than sixty-two collisions
on the port (i.e., is automatically partitioned). The
number of collisions that triggers this trap is the same at
either 10Mbps or 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 Base module.
Consequently, values for MIB objects can be retrieved from any
SNMP-based network manager 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
Object-Identity (OID) at the network manager. MIB values can
be either read-only or read-write.
Read-only MIBs variables can be either constants that are
programmed into the Switch, or variables that change while
the Switch is in operation. Examples of read-only constants
Switch Management Concepts
33