Cabletron Systems STHI User Manual

Page 5-24

2

This displays the status of the ring to which the STHI is currently 
connected: if the STHI is bypassed, it refers only to the STHI hub’s internal 
ring; otherwise, it refers to the stack’s common ring.

•

This reflects a transient state during which the 

management agent is unable to determine the current ring status.

•

The STHI has disconnected itself completely from other 

hubs in the stack: it is not supporting the common ring and cannot 
determine the ring state.

•

The ring is operating trouble-free.

•

The active monitor has issued a ring purge command to 

clear all circulating transmissions. Communications will be restored 
momentarily—when the active monitor releases a new token.

•

The ring has entered into the active monitor 

contention process to determine a new active monitor for the ring.

•

The STHI has detected a beacon frame.

•

A station failed the lobe self-test when attempting to 

insert into the ring; soft-errors may have occurred.

3

This identifies the ring on which a bridge is available. Zero indicates that 
there is no bridge on any ring in the stack.

4

This displays the number of stations currently inserted into the ring. If the 
STHI is bypassed, only the stations on the STHI’s self-supported ring are 
counted.

5

This displays the number of TCU ports currently enabled.

6

This displays the STHI hub’s currently set ring speed.