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Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide User Manual

Page 265

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CLI display of detailed STP information for ports (Continued)

TABLE 47

Field

Description

Active Timers

The current values for the following timers, if active:

• Message age - The number of seconds this port has been waiting for a hello message

from the root bridge.

• Forward delay - The number of seconds that have passed since the last topology change

and consequent reconvergence.

• Hold time - The number of seconds that have elapsed since transmission of the last

Configuration BPDU.

BPDUs Sent and
Received

The number of BPDUs sent and received on this port since the software was reloaded.

Displaying detailed STP information for a single port in a specific VLAN

Enter a command such as the following to display STP information for an individual port in a specific
VLAN.

device#show span detail vlan 1 ethernet 7/1

Port 7/1 is FORWARDING

Port - Path cost: 19, Priority: 128, Root: 0x800000e052a9bb00

Designated - Bridge: 0x800000e052a9bb00, Interface: 7, Path cost: 0

Active Timers - None

BPDUs - Sent: 29, Received: 0

Syntax: show span detail [ vlan vlan-id ethernet port]

Displaying STP state information for an individual interface

To display STP state information for an individual port, you can use the methods in

Displaying STP

information for an entire device

on page 259 or

Displaying detailed STP information for each interface

on page 261. You also can display STP state information for a specific port using the following method.

To display information for a specific port, enter a command such as the following at any level of the CLI.

device#show interface ethernet 3/11

FastEthernet3/11 is up, line protocol is up

Port up for 1 hour 50 minutes 30 seconds

Hardware is FastEthernet, address is 0000.00a9.bb49 (bia 0000.00a9.bb49)

Configured speed auto, actual 100Mbit, configured duplex fdx, actual fdx

Member of L2 VLAN ID 1, port is untagged, port state is FORWARDING

STP configured to ON

, priority is level0, flow control enabled

mirror disabled, monitor disabled

Not member of any active trunks

Not member of any configured trunks

No port name

MTU 1518 bytes, encapsulation ethernet

5 minute input rate: 352 bits/sec, 0 packets/sec, 0.00% utilization

5 minute output rate: 0 bits/sec, 0 packets/sec, 0.00% utilization

1238 packets input, 79232 bytes, 0 no buffer

Received 686 broadcasts, 0 runts, 0 giants

0 input errors, 0 CRC, 0 frame, 0 ignored

529 multicast

918 packets output, 63766 bytes, 0 underruns

0 output errors, 0 collisions

The STP information is shown in bold type in this example.

Syntax: show interfaces [ ethernet port] | [loopback num] | [slot slot-num] | [ve num] | [brief]

Displaying detailed STP information for a single port in a specific VLAN

FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide

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