Cisco Catalyst 4500 Series Configuration Manual page 220

Ios software configuration guide isco ios xe 3.9.0e and ios 15.2(5)ex
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debug spanning-tree switch
Examples
The following example shows how to enable the transmit BPDU debugging on the spanning tree switch
shim:
Switch# debug spanning-tree switch tx
Spanning Tree Switch Shim transmit bpdu debugging is on
*Sep 30 08:47:33: SP: STP SW: TX: bpdu of type ieee-st size 92 on FastEthernet5/9 303
*Sep 30 08:47:33: SP: STP SW: TX: bpdu of type ieee-st size 92 on FastEthernet5/9 304
*Sep 30 08:47:33: SP: STP SW: TX: bpdu of type ieee-st size 92 on FastEthernet5/9 305
*Sep 30 08:47:33: SP: STP SW: TX: bpdu of type ieee-st size 92 on FastEthernet5/9 349
*Sep 30 08:47:33: SP: STP SW: TX: bpdu of type ieee-st size 92 on FastEthernet5/9 350
*Sep 30 08:47:33: SP: STP SW: TX: bpdu of type ieee-st size 92 on FastEthernet5/9 351
*Sep 30 08:47:33: SP: STP SW: TX: bpdu of type ieee-st size 92 on FastEthernet5/9 801
<... output truncated...>
Switch#
Related Commands
Command
undebug spanning-tree switch (same as
no debug spanning-tree switch)
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release XE 3.9.xE and 15.2(5)Ex
2-182
Chapter 2
Cisco IOS Commands for the Catalyst 4500 Series Switches
Description
Disables debugging output.
OL-30934-01

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