Bay Technical Associates BayStack 304 - Manual (Page 63)

Customizing and Managing the BayStack Switches
893-01010-A 3-9
• Topology Change
Specifies the total number of topology changes detected by this bridge since
the management entity was last reset or initialized.
• Time Since Topology Change
Provides the time since the last topology change was detected by the bridge
entity.
• Root Cost
Provides the path cost from the switch to the designated root bridge.
• Hold Time
Specifies the time value that determines the interval length during which no
more than two configuration bridge PDUs shall be transmitted by this node.
• Bridge Max Age
Specifies the maximum age (in seconds) that a hello message can attain before
it is discarded. This parameter, set for this bridge by management, takes effect
only when this bridge becomes the root bridge. Note that, if this bridge
becomes the root bridge, its Maximum Age Time parameter value becomes
the (actual) Maximum Age Time parameter value for all bridges in the
spanning tree network (see also “Maximum Age Time” parameter).
• Bridge Hello Time
Indicates the Hello interval (the amount of time between transmissions of
Configuration Bridge PDUs) that is specified (set by management) for this
bridge. This parameter takes effect only when this bridge becomes the root
bridge. Range is 1 to 65535 seconds with a default of 2 seconds.
Note: Although you can set the hello time for a bridge with bridge
management software, once the spanning tree computation process is
complete, all bridges participating in spanning tree use the root bridge’s
Hello Interval parameter value. If any bridge becomes the root bridge, its
Hello Interval parameter value becomes the (actual) Hello Interval
parameter value for all bridges in the spanning tree network (see also
“Hello Time” parameter).
89301010.BK Page 9 Tuesday, June 10, 1997 8:00 PM