Cabletron Systems STS16-20D User Manual

Monitoring the Network from the Console Statistics Menu

SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide

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Known-<port type> Port <nn>

—

A known address on port nn. The port number “nn” can be followed by
SRT

 which means that the address is known as source of frames 

that shall be switched using the SRT switching mode. If a BRF is
configured for SRT/SRB mode, a MAC address can be known both as
an SRT address and as an SRB address.

—

<port type> can be:
TR—

The address is known at the specified Token-Ring port.

—The address is known at the specified ATM port

—The address is known at the specified High-Speed 

Token-Ring port
TS

—The address is known at the specified Translational Switch.

—In this case “nn” will appear as <box number>/<port number>. 

The address is known at a port of another switch in the stack.

If the address has occurred as a destination address in 
incoming frames at other ports, it will be present in these 
ports too.

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Unknown

—

The address is a unicast address and has occurred as a destination 

address in incoming frames at one or more ports. The switch has, 
however, not yet learned the location of the address because the station 
has not sent any response frames. 

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Multicast

—

The address is a group address or a functional address and has occurred 

as a destination address in incoming frames at one or more ports.

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STP Multicast

—

The group address used as a destination address in IEEE Spanning 
Tree Protocol frames.

—       Present on all ports.

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STP Multicast-Cisco

—

The group address used as a destination address in Cisco Spanning 
Tree Protocol frames.

—       Present on all ports.

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STP Multicast-IBM

—       The functional address used as a destination address in IBM Spanning 

Tree Protocol frames.