CANOGA PERKINS 9145E NID Software Version 4.10 - Manual (Page 244)

9145E NID Software User’s Manual Service OAM
Maintenance End Points
232
11.6.7 Loopback Procedures
A loopback request is initiated by a MEP to verify the connectivity to a specified target MEP or
MIP in the network.
NOTE: Only one Loopback session can be active at a time for the entire system.
11.6.6.2 Initiating a Loopback Request
1. On the Maintenance End Point Attributes screen (Figure 11-21 for 802.1ag or Figure 11-
22 for Y.1731), type L and press Enter.
• If a Loopback request was already initiated from the MEP, a Loopback Monitoring
screen (Figure 11-29 for unicast, Figure 11-30 for sweep, or Figure 11-31 for mul-
ticast) opens.
NOTE: Multicast loopback monitoring is valid for Y.1731 mode only.
• Otherwise, the Loopback Request screen (Figure 11-32) opens.
2. To change the loopback mode, on the Loopback Request screen, type 1 and press Enter.
• For 802.1ag, select unicast regular or unicast sweep.
• For Y.1731, select unicast regular, unicast sweep, or multicast.
Sweep loopback allows you to initiate a procedure for which the size of a loopback
message is automatically incremented by 1 within a preset limit.
Once you select a loopback mode, the screen will change to display only the parameters
applicable to that mode. Number of packets, transmission rate, and Data TLV attributes
do not apply to sweep and multicast modes.
3. To change the destination of the loopback message, type 2 and press Enter. Select MAC
address or MEP ID. You are prompted to enter the address or ID. Type the address or ID
and press Enter.
4. To change the priority of the request (priority bits (P-Bit) value), type 3 and press Enter.
Type a value between 0 and 7 and press Enter.
5. To change the DE (drop eligibility) bit value, type 4 and press Enter. The DE value
indicates whether the request can be dropped. Type 0 or 1 and press Enter.
• If you chose regular mode in step 1, go to step 6.
• If you chose sweep mode in step 1, go to step 10.
• If you chose multicast in step 1, type S to send and press Enter.
6. To change the Transmission rate, type 5 and press Enter. Type a value between 1 and 66
and press Enter.
7. To change the number of packets, type 6 and press Enter. The default is 1. A value of 0
indicates a continuous loopback. Type a value between 0 and 99 and press Enter.