Displaying Bridge Port Information

11-5

Table 11-1 Bridge Port Attributes (continued)

Parameter

Description

 

 

state

Spanning Tree state (blocking, listening, learning, forwarding,

 

disabled) in which the port is currently operating:

 

Blocking: The bridge continues to run the Spanning Tree

 

algorithm on that port, but the bridge does not receive data

 

packets from the port, learn locations of station addresses from it,

 

or forward packets onto it.

 

Listening: The bridge continues running the Spanning Tree

 

algorithm and transmitting configuration messages on the port,

 

but it discards data packets received on that port and does not

 

transmit data packets forwarded to that port.

 

Learning: Similar to listening, but the bridge receives data packets

 

on that port to learn the location of some of the stations located

 

on that port.

 

Forwarding: The bridge receives packets on that port and

 

forwards or does not forward them depending on address

 

comparisons with the bridge’s source address list.

 

Disabled: The port has been disabled by management.

stp

Whether the port is enabled or disabled for the Spanning Tree

 

Protocol

txAllFilters

Number of frames discarded because of a user-defined packet

 

filter on the transmit all path of this bridge port

txBlockedDiscs

Number of frames discarded by this port because the transmitting

 

bridge port was not in the forwarding state

txFrames

Number of frames that have been transmitted by this port to its

 

segment. A frame transmitted on the interface corresponding to

 

this port is only counted by this object if the frame is for a

 

protocol being processed by the local bridging function,

 

including bridge management frames.

txMcastFilters

Number of frames discarded because of a user-defined packet

 

filter on the transmit multicast path of this port

txMtuExcDiscs

Number of frames discarded by this port due to an excessive size

 

 

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3Com 2200 manual Bridge Port Attributes Parameter Description State, Disabled in which the port is currently operating, Stp