Connection Testing; Figure 29-1 Network Loopback Paths - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

Chapter 29 Troubleshooting

Figure 29-1 Network Loopback Paths

U
X
M
F
R
M
LL = Local Loopback path

Connection Testing

System software includes a Test Connection (tstcon) command for testing network connections. This
test is initiated by the network operator from the NMS console and can be performed at any time but it
momentarily interrupts traffic on the connection during the test. Testing a connection should be
performed only when an alarm has been reported from the connection or during off-hours.
Test Connection tests both directions of transmission from end-to-end and displays a pass or fail
indication for each connection tested. You may specify:
•
•
•
•
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Local node
B
C
LL
F
R
I
User
device
a single connection,
all connections,
all connections of a particular type (voice, data, or frame relay),
or a starting and ending connection number.
Remote node
B
C
RL
F
R
I
User
device
RL = Remote Loopback path
Local node
S S
D D
P I
Cisco BPX 8600 Series Installation and Configuration
Troubleshooting the BPX Switch
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M
F
R
M
DSU
Loop
code
29-7