Allied Telesis AT-S63 - Manual (Page 636)

Chapter 33: Multiple Spanning Tree Protocol (MSTP) Commands
636 Section V: Spanning Tree Protocols
 Forwarding delay
 Maximum age
 Maximum hops
 Configuration name
 Reversion level
 Bridge identifier
 Root identifier
The hello time, forwarding delay, and bridge max age parameters will
have two values if MSTP is enabled on the switch (for example,
Forwarding Delay .. 15/15). The first number is the configured value on the
switch for the parameter and the second is the value the switch obtained
from the root bridge and is actually using for the parameter. The switch
displays only the configured values for these parameters if spanning tree
is not enabled on the switch.
The bridge Identifier parameter consists of the switch’s CIST priority value
and MAC address, separated by a slash (/). To change the CIST priority
value, refer to “SET MSTP CIST” on page 625. The MAC address of the
switch cannot be changed.the MAC address of the switch.
The root bridge parameter specifies the bridge identifier of the root bridge
of the spanning tree domain. The identifier consists of the bridge or CIST
priority value and MAC address of the root switch, separated by a slash
(/). This parameter only appears when STP is activated on the switch.
The PORTCONFIG parameter displays the following MSTP port
parameter settings:
 Edge-port status
 Point-to-point status
 External and internal port costs
 Port priority
The PORTSTATE parameter displays the following MSTP port status
information:
 MSTP port state
 MSTP role
 Point-to-point status
 Spanning tree version
 Internal and external port costs