Specifications

6-7
Cisco 1700 Series Router Software Configuration Guide
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Chapter 6 Configuring a Leased Line
Troubleshooting Problems with Leased Lines
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load
1/255
Encapsulation PPP, loopback not set, keepalive set (10 sec)
LCP Closed
.
.
.
Step 2 Confirm that the “Serial0 is up, line protocol is up” message appears, as shown in
the command output example.
Step 3 Proceed as appropriate:
• If you see the “Serial0 is up, line protocol is up” message shown in the
example command output, continue configuration by reentering global
configuration mode.
• If you see one of the following messages instead of the “Serial0 is up, line
protocol is up” message, see the “Troubleshooting Problems with Leased
Lines” section for possible causes of the message and suggested actions:
– Serial0 is down, line protocol is down.
– Serial0 is up, line protocol is down.
– Serial0 is up, line protocol is up (looped).
– Serial0 is administratively down, line protocol is up.
Troubleshooting Problems with Leased Lines
Table 6-1 describes some common problems with leased lines, possible causes,
and suggested actions for solving the problems. The table uses Serial 0 port as the
location of the problems.