3com S7906E Guide De Référence

 

1-3 

Any view 

1: Monitor level 

instance instance-id: Displays the spanning tree information of a particular MSTI. The value of 

instance-id ranges from 0 to 31. The minimum value is 0, representing the common internal spanning 

tree (CIST). 

interface  interface-list: Specifies an Ethernet port list, in the format of interface-list = { interface-type 

interface-number [ to  interface-type interface-number ] }&<1-10>, where &<1-10> indicates that you 

can specify up to 10 ports or port ranges. 

slot slot-number: Displays the spanning tree information of the card on the specified slot. 

brief: Displays brief information.  

Use the display stp command to view the MSTP status information and statistics information.  

Based on the MSTP status information and statistics information, you can analyze and maintain the 

network topology or check whether MSTP is working normally.  

Note that: 

z 

If you do not specify any MSTI ID or port list, this command will display the MSTP information on all 

ports. The displayed information is sequenced by MSTI ID and by port name in each MSTI.  

z 

If you specify an MSTI ID, this command will display the MSTP information on all ports in that MSTI. 

The displayed information is sequenced by port name.  

z 

If you specify a port list, this command will display the MSTP information on the specified ports. The 

displayed information is sequenced by MSTI ID, and by port name in each MSTI.  

z 

If you specify both an MSTI ID and a port list, this command will display the MSTP information on 

the specified ports in the specified MSTI.  

The MSTP status information includes:  

z 

CIST global parameters: Protocol work mode, device priority in the CIST (Priority), MAC address, 

hello time, max age, forward delay, maximum hops, common root of the CIST, external path cost 

from the device to the CIST common root, regional root, the internal path cost from the device to 

the regional root, CIST root port of the device, and status of the BPDU guard function (enabled or 

disabled).  

z 

CIST port parameters: Port status, role, priority, path cost, designated bridge, designated port, 

edge port/non-edge port, whether connecting to a point-to-point link, maximum transmission rate 

(transmit limit), status of the root guard function (enabled or disabled), BPDU format, boundary 

port/non-boundary port, hello time, max age, forward delay, message age, remaining hops, and 

whether rapid state transition enabled (designated ports).  

z 

MSTI global parameters: MSTI ID, bridge priority of the MSTI, regional root, internal path cost, 

MSTI root port, and master bridge.  

z 

MSTI port parameters: Port status, role, priority, path cost, designated bridge, designated port, 

remaining hops, and whether rapid state transition enabled (for designated ports).  

The statistics information includes: