The 9E312/9E423 Module View
2-8 Viewing Module Information
LIS (Listening) (Magenta) The port is not adding information to the
filtering database. It is monitoring Bridge Protocol Data
Unit (BPDU) traffic while preparing to move to the
forwarding state.
BLK (Blocking) (Orange) The port is on-line, but filtering traffic from
going across the 9E312/9E423 from one network
segment to another. Bridge topology information will be
forwarded by the port.
BRK (Broken) (Red) The physical interface has malfunctioned.
The Chassis Manager Window
Like most networking devices, Cabletron’s devices draw their functionality from
a collection of proprietary MIBs and IETF RFCs. In addition, Cabletron’s newer
intelligent devices — like the 9E312/9E423 Module — organize their MIB data
into a series of “components.” A MIB component is a logical grouping of MIB
data, and each group controls a defined set of objects. For example, 9E312/9E423
Module bridging information is organized into its own component; more generic
device and port information resides in the chassis component. Note, too, 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 — and, therefore, the functionality —
supported by the currently monitored device.
Figure 2-4. Chassis Manager Window
The MIBs which provide the
9E312/9E423 Module’s
functionality — both proprietary
MIBs and IETF RFCs — are
listed here
MIB Components are listed here;
remember, there’s no one-to-one
correspondence between MIBs
and MIB Components