Troubleshooting
11-21
9124-A2-GH30-00
June 1999 - Preliminary
Physical Tests
Physical Tests can be commanded for any of the following interfaces:
H
Network
H
DSX-1
H
Port 1
Physical tests require the participation of your network service provider.
CAUTION:
You should not run these tests with frame relay equipment attached;
you must disconnect the frame relay equipment and use external test
equipment.
Line Loopback
The Line Loopback (LLB) loops the information received on the selected interface
back to the source of the loopback. When used with a pattern test at the remote
node, LLB determines whether the problem is with the sending device or the T1
facility.
97-15336
The T1
Interface
Other
T1
Interface
LLB
All
1s
Framer
CAUTION:
Line Loopback may affect the operation of the frame relay PVCs
assigned to the selected port. While in loopback, the frame relay link
will be down so any IP data being sent while this test is active will be
disrupted.
An LLB cannot be started when one of the following tests is active:
H
Payload Loopback, Send Remote Line Loopback, or an active Monitor
Pattern on this network interface.
H
Repeater Loopback on any other T1 interface with DS0s assigned to this
network interface.
H
Send Pattern Test on this network interface or any synchronous data port
(Port Use set to Synchronous) assigned to this interface.
H
Send V.54 or FT1 Loopback, or Data Channel Loopback on any synchronous
data port (Port Use set to Synchronous) and assigned to this network
interface.
Summary of Contents for FrameSaver SLV 9124
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