Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
debug spanning-tree switch
debug spanning-tree switch
To enable the switch shim debugging, use the debug spanning-tree switch command. To disable the
debugging output, use the no form of this command.
debug spanning-tree switch {all | errors | general | pm | rx {decode | errors | interrupt |
process} | state | tx [decode]}
no debug spanning-tree switch {all | errors | general | pm | rx {decode | errors | interrupt |
process} | state | tx [decode]}
Syntax Description
Defaults This command has no default settings.
Command Modes Privileged EXEC mode
Command History
Usage Guidelines This command is supported only on the supervisor engine and enterable only from the switch console.
all Displays all the spanning-tree switch shim debugging messages.
errors Enables the debugging of switch shim errors or exceptions.
general Enables the debugging of general events.
pm Enables the debugging of port manager events.
rx Displays the received BPDU-handling debugging messages.
decode Enables the debugging of the decode-received packets of the spanning-tree switch
shim.
errors Enables the debugging of the receive errors of the spanning-tree switch shim.
interrupt Enables the shim ISR receive BPDU debugging on the spanning-tree switch.
process Enables the process receive BPDU debugging on the spanning-tree switch.
state Enables the debugging of the state changes on the spanning-tree port.
tx Enables the transmit BPDU debugging on the spanning-tree switch shim.
decode
(Optional) Enables the decode-transmitted packets debugging on the spanning-tree
switch shim.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E