HP Comware 5 Debug Manual Vol 2

Field
Description
Received IPC ack "fail", destination node[1] was
down and dropped the message[type:5]
LPDT failed to receive an IPC ACK message. The
destination node 1 was down and the message was
dropped. The message type is 5.
Table 229 Output from the debugging loopback-detection packet command
Field
Description
Received loopback detection packet, and LPDT
control block does not exist on interface
0x12345676
LPDT received a loopback detection packet, but the
LPDT control module does not exist on interface
0x12345676.
Can't send loopback detection packet on VLAN 2 for
MBuf creating failed
LPDT failed to send loopback detection packets from
VLAN 2 because the packets were not successfully
created.
Can't send loopback detection packet on VLAN 2 for
packet sending component is null
LPDT failed to send loopback detection packets from
VLAN 2 because the packet sending component was
null.
STG Component was null The Spanning Tree Group (STG) component was null.
Valid device TLV does not exist The packet does not contain valid device TLVs.
Example
# Enable loopback detection error debugging.
<Sysname> debugging loopback-detection abnormal
*Dec 22 14:09:53:859 2008 Sysname LPDT/7/ABNORMAL:
Failed to get Component
// LPDT failed to obtain required components.
# Enable loopback detection event debugging.
<Sysname> debugging loopback-detection event
*Dec 22 11:59:33:391 2008 Sysname LPDT/7/EVENT: Slot=1;
Detected loopback on interface Ethernet1/1
// LPDT detected a loop on Ethernet 1/1.
*Dec 22 13:22:31:299 2008 Sysname LPDT/7/EVENT:
Received interface create event [Bridge-Aggregation1]
// LPDT received a message for notifying that aggregate interface Bridge-Aggregation 1 was created.
*Dec 22 14:40:32:297 2008 Sysname LPDT/7/EVENT:
Loopback detection interval changes from 30 to 50
// The loopback detection interval changed from 30 seconds to 50 seconds.
# Enable loopback detection packet debugging, and enable loopback detection for VLAN 6.
<Sysname> debugging loopback-detection packet
<Sysname> system-view
[Sysname] loopback-detection enable vlan 6
*Dec 22 11:57:31:453 2008 Sysname LPDT/7/PACKET:
Succeeded in sending loopback detection packet on VLAN 6
// LPDT sent loopback detection packets successfully on VLAN 6.
*Dec 22 13:50:31:453 2008 Sysname LPDT/7/PACKET:
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