Configuration Prerequisites; Finding The Path Between A Source Mep And A Target Mep; Enabling Automatic Lt Messages Sending; Displaying And Maintaining Cfd - 3Com 4500G Family Configuration Manual

To implement the first function, the specified MEP first sends LTM messages to the target MEP.
Based on the LTR messages in response to the LTM messages, the path between the two MEPs
can be identified.
In the latter case, after LT messages automatic sending is enabled, if a MEP fails to receive the
CCMs from the remote MEP within 3.5 sending intervals, the link between the two is regarded as
faulty and LTMs will be sent out. Based on the LTRs that echo back, the fault source can be
located.

Configuration Prerequisites

Before configuring this function, you should first complete MEP and MIP configuration tasks.

Finding the Path Between a Source MEP and a Target MEP

Follow these
To do...
Enter system view
Find the path between a source
MEP and a target MEP

Enabling Automatic LT Messages Sending

Follow these steps to enable automatic LT messages sending:
To do...
Enter system view
Enable automatic LT messages
sending

Displaying and Maintaining CFD

To do...
Display CFD status
Display MD configuration
information
Display MA configuration
information
Display service instance
configuration information
Display MP information
Display the attribute and
running information of the
MEPs
steps to find the
system-view
cfd linktrace service-instance instance-id mep
mep-id { target-mep target-mep-id | target-mac
mac-address } [ ttl ttl-value ] [ hw-only ]
Use the command...
system-view
cfd linktrace auto-detection
[ size size-value ]
Use the command...
display cfd status
display cfd md
display cfd ma [ [ ma-name ]
md md-name ]
display cfd service-instance
[ instance-id ]
display cfd mp [ interface
interface-type
interface-number ]
display cfd mep mep-id
service-instance instance-id
path between a source
Use the command...
1-9
MEP and a target
Remarks
—
Required
Remarks
—
Required
Disabled by default
Remarks
Available in any view
Available in any view
Available in any view
Available in any view
Available in any view
Available in any view
MEP: