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Example of Debugging Command
This section introduces using and information of debugging command
through example.
For the environment and configuration, please refer to UDLD application
example one.
1. Port 0/1 receives the processing of one packet via
debug udld
port 0/0
.
Enable the command
debug udld port 0/0 1
SwitchA#
debug udld port 0/0 1
Displayed Result
Analysis
UDLD parse: Port 0/0 St:udld_St_Echo protEv:udld_Ev_EchoMsg
Len:92 Rlt:UDLD_RLT_INDTRMINT
UDLD fsm: Port 0/1 Event:udld_Ev_EchoMsg Len:92 [Pos
F:udld_iEchoRcvProc L:855]
Port 0/0 receives
event of
udld_Ev_EchoMsg,
the event further
comprises an echo
data package with
length about 92.
When the port
receives the event,
the Port 0/0 is under
status of
udld_St_Echo. The
single communication
status in the current
is unknown.
Enable the command
debug udld port 0/0
receive
to check the
contents of the UDLD packet received by port 0/0.
SwitchA#
debug udld port 0/0 receive
Displayed Result
Analysis
UDLD enter parse Data: port 0/0 receive PDU data: [Len:64]
00:00:36: Buff Len = 64
00:00:36: 0x21 0x02 0x00 0x01 0x00 0x01 0x00 0x10 0x30 0x30
00:00:36: 0x30 0x31 0x35 0x62 0x36 0x63 0x37 0x64 0x30 0x32
00:00:36: 0x00 0x02 0x00 0x0c 0x70 0x6f 0x72 0x74 0x20 0x30
00:00:36: 0x2f 0x30 0x00 0x03 0x00 0x04 0x00 0x04 0x00 0x05
00:00:36: 0x0f 0x00 0x05 0x00 0x05 0x05 0x00 0x06 0x00 0x0a
00:00:36: 0x72 0x6f 0x75 0x74 0x65 0x72 0x00 0x07 0x00 0x08
00:00:36: 0x00 0x00 0x00 0x01
An UDLD
message is
received by port
0/0, the length
of PDU is 64 and
the data is
displayed
according to the
mode of each
line with 10
bytes.
Enable the command
debug udld port 0/0
send
to check the contents
of the UDLD packet received by port 0/0.
Содержание 065-7434
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