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Utility Commands
601
ProSafe M4100 and M7100 Managed Switches
no debug spanning-tree bpdu receive
This command disables tracing of received spanning tree BPDUs.
Format no debug spanning-tree bpdu receive
Mode
debug spanning-tree bpdu transmit
This command enables tracing of spanning tree BPDUs transmitted by the switch. Spanning
tree should be enabled on the device and on the interface in order to monitor packets on a
particular interface.
Default
Format debug spanning-tree bpdu transmit
Mode
A sample output of the trace message is shown below.
<15> JAN 01 01:02:04 192.168.17.29-1 DOT1S[191096896]: dot1s_debug.c(1249) 101 % Pkt TX
- Intf: 0/7(7), Source_Mac: 00:11:88:4e:c2:00 Version: 3, Root_Mac: 00:11:88:4e:c2:00,
Root_Priority: 0x8000 Path_Cost: 0
The following parameters are displayed in the trace message:
TX
Intf
Source_Mac
Version
Root_Mac
Root_Priority
Path_Cost
no debug spanning-tree bpdu transmit
This command disables tracing of transmitted spanning tree BPDUs.
Format no debug spanning-tree bpdu transmit
Mode
Privileged EXEC
disabled
Privileged EXEC
Parameter Definition
A packet transmitted by the device.
The interface that the packet went out on. Format used is slot/port (internal interface
number). Unit is always shown as 1 for interfaces on a non-stacking device.
Source MAC address of the packet.
Spanning tree protocol version (0-3). 0 refers to STP, 2 RSTP and 3 MSTP.
MAC address of the CIST root bridge.
Priority of the CIST root bridge. The value is from 0 through 61,440. It is displayed in hex
in multiples of 4096.
External root path cost component of the BPDU.
Privileged EXEC