HP Comware 5 Debug Manual Vol 1

Usage guidelines
If neither the send keyword nor the receive keyword are specified, debugging for both received and sent
CFD packets is enabled.
If none of the ais, cci, fng, lbi, mcc, mme, and rmep keywords are specified, debugging for all CFD state
machines is enabled.
If you do not specify a port, debugging for all ports is enabled.
If you enable debugging for sent packets on a port with inbound MEPs configured, only CCM packets
are printed, while LT and LB packets are not printed. If you enable debugging for received packets on the
port, none of CCM packets, LT packets, and LB packets are printed. To view all the packets, enable CFD
debugging for both sent packets and received packets on all the ports.
If you enable CFD packet debugging on a device that supports sending short-interval CCM messages,
the system outputs debugging information only when no port is specified. If the interval field value in the
CCM messages is smaller than 4, the system samples one incoming packet and one outgoing packet per
second for debugging.
Ta b l e 161 describes output fields and messages for the debugging cfd error command.
Table 161 Output from the debugging cfd error command
Field
Description
CCM Continuity check message.
LBM Loopback message.
LBR Loopback reply messages.
LTM Linktrace message.
LTR Linktrace reply message.
1DM One-way delay measurement.
DMM Delay measurement message.
DMR Delay measurement reply.
AIS Alarm indication signal.
TST Test PDU.
LMM Loss measurement message.
LMR Loss measurement reply.
PDU Protocol data unit.
Origin Information TLV's Origin MAC is multicast
address
The source MAC address of the source information
TLV is a multicast address.
Origin Information TLV's Target MAC is multicast
address
The destination MAC address of the source
information TLV is a multicast address.
Origin Information TLV's TTL is 0
The TTL of the source information TLV is 0, which is
invalid.
Reply Information TLV's return TTL is 255
The TTL of the reply information TLV is 255, which is
invalid.
Reply Information TLV's Relay is invalid The relay value of the reply information TLV is invalid.
Reply Ingress TLV's Ingress Action is invalid The ingress action of the reply ingress TLV is invalid.
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