Cabletron Systems NB30 manual NB-30 Bridge Port Status Display, Chassis Manager

The NB-30 Bridge Chassis View

The NB-30 Bridge Port Status Display

Each port display on the NB-30 will indicate that portÕs current bridging state:

FWD (Forwarding)	(Green) The port is on line and forwarding packets across
	the NB-30 from one network segment to another.
DIS (Disabled)	(Blue) Bridging at the port has been disabled by
	management; no trafÞc can be received or forwarded on
	this port, including conÞguration information for the
	bridged topology.
LRN (Learning)	(Magenta) The Forwarding database is being created, or
	the Spanning Tree Algorithm is being executed because
	of a network topology change. The port is monitoring
	network trafÞc, and learning network addresses.
LIS (Listening)	(Magenta) The port is not adding information to the
	Þltering database. It is monitoring Bridge Protocol Data
	Unit (BPDU) trafÞc while preparing to move to the
	forwarding state.
BLK (Blocking)	(Orange) The port is on line, but Þltering trafÞc from
	going across the NB-30 from one network segment to
	another. Bridge topology information will be forwarded
	by the port.
BRK (Broken)	(Red) The physical interface has malfunctioned.

Chassis Manager

Like most networking devices, CabletronÕs devices draw their functionality from a collection of proprietary MIBs and IETF RFCs. In addition, CabletronÕs newer intelligent devices organize their MIB data into a series of Òcomponents.Ó A MIB component is a logical grouping of MIB data, and each group controls a deÞned set of objects. Note that there is no one-to-one correspondence between MIBs and MIB components; a single MIB component might contain objects from several different proprietary MIBs and RFCs.

The Chassis Manager window, Figure 2-4,is a read-only window that displays the MIBs and the MIB components Ñ and, therefore, the functionality Ñ supported by the currently monitored device.

To view the Chassis Manager window:

1.Click on Help on the far right of the menu bar at the top of the Chassis View window.

2.Drag down to MIBs Supported, and release.

2-6 Viewing Chassis Information