atmloop - test cell reception and transmission of an ATM interface
/usr/sbin/atmloop card_inst_num [count]
atmloop verifies the complete transmit and receive path of a single
ATM interface. It is usually invoked for diagnostic purposes to
determine if an interface is working properly. It requires a loopback
hood to be plugged into the external connector.
Every three seconds atmloop opens a PVC loopback connection using
alternatively the SONET and SDH physical layer types, sends and then
receives count messages through the cable and prints the transfer
success rate of the current set of messages.
To stop atmloop execution, send an interrupt signal (or press CTRL+C).
The ATM interface must be stopped to run the atmloop command (use the
atmstop(1M) command), so access to the network is interrupted during
execution, and existing IP applications may be disrupted.
You must be superuser to use the atmloop command.
card_inst_num The card instance number of the ATM adapter. No
default. This is the logical unit number of the ATM
adapter. (run the command ioscan -f to get it).
count The number of messages atmloop will transfer each
Default: it sends 5 messages each cycle.
atmloop returns 1 if it was unable to start the test. It returns 0 on
normal completion (interruption signal).
atmloop was developed by HP.
atminit(1M), atmstop(1M), atmmgr(1M), atmcheck(1M), atmserver(1M)
- 1 - Formatted: August 2, 2006