loopback

Trigger the loopback test. The LBM packet is often compared to ping. A MEP transmits the loopback message to an intermediate or endpoint within a domain for the purpose of fault verification. This can be used to check the ability of the network to forward different sized frames.

Syntax

Command Parameters

<0x00:0x00:0x00:0x00:0x00:0x00>
Specifies the remote MAC address to reach the MEP/MIP.
<1-8191>
Specifies the MEP ID.
burst-count <1-200>
Specifies the burst count.
data-tlv-size <0-400>
Specifies the data Type-Length-Value (TLV) size.
frame-size <64-1500>
Specifies the frame size. The default is 0.
interframe-interval <0-1000>
Specifies the interval between LBM frames in msecs. A value of 0 msecs indicates to send the frames as fast as possible. The default is 500.
priority <0-7>
Specifies the priority. The default is 7.
source-mode {nodal|noVlanMac|smltVirtual}
Specifies the source mode as nodal, noVlanMac, or smltVirtual. Use the smltVirtual value with B-VLANs only. Use the noVlanMac value with C-VLANs only. The default is nodal.
source-mode {nodal}
Specifies the source mode as nodal.
test-fill-pattern {all-zero|all-zero-crc|pseudo-random-bit-sequence|pseudo-random-bit-sequence-crc}
Specifies the testfill pattern: all-zero: null signal without cyclic redundancy check; all-zero-crc: null signal with cyclic redundancy check with 32-bit polynomial; pseudo-random-bit-sequence: PRBS without cyclic redundancy check; or pseudo-random-bit-sequence-crc: pseudo-random-bit-sequence with cyclic redundancy check with 32-bit polynomial. A cyclic redundancy check is a code that detects errors. The default is 1:all-zero.
time-out <1-10>
Specifies the time-out interval in seconds. The default is 3.
WORD<1-22> WORD<1-22>
The first parameter, specifies the Maintenance domain name. The second parameter, specifies the Maintenance association name.

Default

None

Command Mode

User EXEC

9037144-00 Rev AA