Reference Guide

1472 | Spanning Tree Protocol (STP)
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Example
(brief)
FTOS#show span 0 brief
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32768
Address 0001.e800.0a56
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32768,
Address 0001.e800.0a56
Configured hello time 2, max age 20, forward delay 15
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
-------------- ------ ---- ---- --- ----- ----------------- ------
Gi 1/1 8.26 8 4 FWD 0 32768 0001.e800.0a56 8.26
Gi 1/2 8.27 8 4 FWD 0 32768 0001.e800.0a56 8.27
Gi 1/3 8.28 8 4 FWD 0 32768 0001.e800.0a56 8.28
FTOS#
Example
(guard)
FTOS#show spanning-tree 0 guard
Interface
Name Instance Sts Guard type
--------- -------- --------- ----------
Gi 0/1 0 INCON(Root) Rootguard
Gi 0/2 0 LIS Loopguard
Gi 0/3 0 EDS (Shut) Bpduguard
“Number of...” Displays the number of topology changes, the time of
the last topology change, and on what interface the
topology change occurred.
“Timers” Lists the values for the following bridge timers:
hold time, topology change, hello time, max age, and
forward delay.
“Times” List the number of seconds since the last:
• hello time
• topology change
• notification
• aging
“Port 1...” Displays the Interface type slot/port information and
the status of the interface (Disabled or Enabled).
“Port path...” Displays the path cost, priority, and identifier for the
interface.
“Designated root...” Displays the priority and MAC address of the root
bridge of the STG that the interface belongs.
“Designated port...” Displays the designated port ID
Table 52-1. show spanning-tree 0 Command Information
Field Description
Table 52-2. show spanning-tree 0 guard Command Example Information
Field Description
Interface Name STP interface
Instance STP 0 instance