CANOGA PERKINS 9145EMP NID Software Version 4.0 - Manual (Page 176)

Service OAM 9145EMP NID Software User’s Manual
Maintenance End Points
161
11.6.7 Linktrace Procedures
A Linktrace Message (LTM) is initiated by a MEP to trace a path to a target MAC address or MEP
ID. It is forwarded from MIP to MIP, up to the point at which the LTM reaches its target, a MEP, or
can no longer be forwarded. Each MEP or MIP along the path to the target generates a linktrace
reply (LTR).
11.6.7.1 Initiating a Linktrace Request
You can initiate a link trace and monitor the results on a separate screen.
NOTE: Only one Linktrace session can be active at a time for the entire system.
1. On the Maintenance End Point Attributes screen (Figure 11-21 for 802.1ag or Figure 11-
22 for Y.1731), type T and press Enter. If a linktrace request was already initiated from
this MEP, the Linktrace Monitoring screen (Figure 11-27) opens. Otherwise, the Linktrace
Request screen (Figure 11-26) opens.
2. To enter an address for the linktrace request, type 1 and press Enter. Select MAC
address or MEP ID and press Enter. You are prompted to type the address or ID. Type a
MAC address or MEP ID and press Enter.
3. To set the FDB only flag, type 2 and press Enter. If the FDB only flag is set to yes, the
linktrace response is sent to the originator only if the egress port for the destination MAC
address is known by the forwarding database and not through other methods. Select Yes
or No and press Enter.
4. To set the Initial TTL (time to live) value for the LTM, type 3 and press Enter. The TTL
value indicates the number of nodes (SOAM enabled L2 forwarding devices) the LTM will
cross before it is dropped. The default value is 64. If the LTM TTL is 0 or 1, the LTM is not
forwarded to the next node, and if 0, no LTR is generated.
5. Type a value between 2 and 255 and press Enter. The Linktrace Monitoring screen
(Figure 11-27) opens.
6. Press Esc to return to the Maintenance End Point Attributes screen.
7. To send the linktrace request, type S and press Enter.
11.6.7.2 Monitoring a Linktrace Request
1. To see results details, on the Linktrace Monitoring screen (Figure 11-27), type S and
press Enter. The SOAM Linktrace Report screen (Figure 11-28) opens.
2. Press Esc to return to the Linktrace Monitoring screen.
3. To send another Linktrace Request, type R and press Enter. The Linktrace Request
screen (Figure 11-26) opens.
4. Press Esc to return to Maintenance End Point attributes screen.