
D-Link Unified Switch CLI Command Reference
464
© 2009 D-Link Corporation. All Rights Reserved
no debug spanning-tree bpdu receive
This command disables tracing of received spanning tree BPDUs.
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.
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:
Source_Mac
Source MAC address of the packet.
Version
Spanning tree protocol version (0-3). 0 refers to STP, 2 RSTP and 3 MSTP.
Root_Mac
MAC address of the CIST root bridge.
Root_Priority
Priority of the CIST root bridge. The value is between 0 and 61440. It is displayed in hex in multiples
of 4096.
Path_Cost
External root path cost component of the BPDU.
Format
no debug spanning-tree bpdu receive
Mode
Privileged EXEC
Default
disabled
Format
debug spanning-tree bpdu transmit
Mode
Privileged EXEC
Parameter
Definition
TX
A packet transmitted by the device.
Intf
The interface that the packet went out on. Format used is unit/port/slot (internal interface number). Unit
is always shown as 1.
Source_Mac
Source MAC address of the packet.
Version
Spanning tree protocol version (0-3). 0 refers to STP, 2 RSTP and 3 MSTP.
Root_Mac
MAC address of the CIST root bridge.
Root_Priority
Priority of the CIST root bridge. The value is between 0 and 61440. It is displayed in hex in multiples
of 4096.
Path_Cost
External root path cost component of the BPDU.
Parameter
Definition
Содержание DWS-4000 Series
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