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Bridge Status 3-5
NB-30 Bridging
Bridge State on Interface
This color-coded text box indicates the state of bridging over the port interface.
Note that this state (and its corresponding color code) will also be reßected on the
NB-20E/25E Port display in the Chassis View window. Possible bridge states and
their corresponding colors are:
FWD (Forwarding) (Green) The port is on-line and forwarding packets
across the NB-20E/25E 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-20E/25E from one network segment
to another. Bridge topology information will be
forwarded by the port.
BRK (Broken) (Red) The physical interface has malfunctioned.
The port Status is taken from CabletronÕs proprietary Bridge MIB, as the
NB-30 is an older bridge. Potential status conditions are:
OFF The port is off, due to a failed network interface chip
associated with that port.
OK/SQE ON The port is communicating with the network and the
transceiver making the connection to the network has
SQE enabled.
OK/SQE OFF The port is communicating with the network and the
transceiver making the connection to the network has
SQE disabled.
CARRIER LOST Communication with the network has not been
established or has been lost