Users Guide

Table Of Contents
424 | RSTP Dell PowerConnect ArubaOS 5.0 | [User Guide
In the CLI
Change the default configurations via the command line.
(host) (config-if)#spanning-tree ?
cost Change an interface's spanning tree path cost
point-to-point Set interface as point-to-point link
port-priority Change an interface's spanning tree priority
portfast Allow a change from blocking to forwarding
Monitoring RSTP
Statistical information for point-to-point, role, BPDU etc. can be viewed from the WebUI (see Figure 74).
Figure 74 Monitoring RSTP
Troubleshooting
The following points give some troubleshooting tips.
z The show spantree command displays the root and the bridge information; verify that they are correct. Also
displayed is the port/interface information (for example state, role, etc.); make sure that the state and role
information correspond to each other.
(host) (config) #show spantree
Designated Root MAC 00:0b:86:50:3c:20
Designated Root Priority 32768
Root Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
Bridge MAC 00:0b:86:50:3c:20
Bridge Priority 32768
Configured Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
Rapid Spanning-Tree port configuration
--------------------------------
Port State Cost Prio PortFast P-to-P Role
---- ----- ---- ---- -------- ------ ----
FE 1/0 Discarding 0 128 Disable Enable Disabled
FE 1/1 Forwarding 0 128 Disable Enable Designated
FE 1/2 Forwarding 0 128 Disable Enable Root
FE 1/3 Discarding 0 128 Disable Disable Disabled
FE 1/4 Discarding 0 128 Disable Enable Alternate