Dell PowerConnect B-RX - Page 471

BigIron RX Series Configuration Guide 395
53-1002253-01
Displaying RSTP information
13
To display detailed information about RSTP, enter the following command.
Syntax: show rstp detail [vlan <vlan-id>]
The vlan <vlan-id> parameter displays RSTP information for the specified port-based VLAN.
The show rstp detail command shows the following information.
Role The current role of the port:
• Root
• Designated
• Alternate
• Backup
• Disabled
Refer to “Bridges and bridge port roles” on page 357 for definitions of the
roles.
State The port’s current RSTP state. A port can have one of the following states:
• Forwarding
• Discarding
• Learning
• Disabled
Refer to “Bridge port states” on page 361 and “Edge port and non-edge
port states” on page 362.
Designated Cost The best root path cost that this port received, including the best root path
cost that it can transmit.
Designated Bridge The ID of the bridge that sent the best RST BPDU that was received on this
port.
TABLE 81 The show rstp detail command output
This field... Displays...
VLAN ID ID of the VLAN that owns the instance of RSTP and the number of RSTP
instances on that VLAN.
Bridge ID ID of the bridge.
Control ports Ports assigned to the VLAN
TABLE 80 CLI display of RSTP summary (Continued)
This field... Displays...
BigIron RX(config)#show rstp detail
VLAN 10 - RSTP instance 0
--------------------------------------------------------------------
RSTP (IEEE 802.1w) Bridge Parameters:
BridgeId 0001000480a04000, RootBridgeId 0001000480a04000
Control ports - ethe 1/3 ethe 1/13
ForceVersion 2, MigrateTime 3, TxHoldCount 3
RSTP (IEEE 802.1w) Port Parameters:
Port 1/3 - Role: DISABLED - State: DISABLED
Port 1/13 - Role: DISABLED - State: DISABLED