Information Technology Reference
In-Depth Information
Table19-1
X.25: No Connections over X.25 Link (continued)
Possible Problem
Solution
The x25 map
command is
misconfigured.
1.
Use the
show running-config
privileged exec command to
view the router configuration. Look for x25 map interface
configuration command entries.
2.
Make sure that
x25 map
commands specify the correct
address mappings.
To retract a prior mapping, use the
no
form of the x25 map
command with the appropriate network protocol(s) and X.121
address argument:
no x25
map protocol address x121-address
To set up the LAN protocols-to-remote host mapping, use the
x25 map interface configuration command:
x25 map
protocol address [protocol2 address2[...[protocol9
address9]]] x121-address [option
]
Syntax Description
:
protocol
—Protocol type, entered by keyword. Supported
protocols are entered by keyword. As many as nine protocol
and address pairs can be specified in one command line.
•
address
—Protocol address.
•
x121-address
—X.121 address of the remote host.
•
option
—(Optional) Additional functionality that can be
specified for originated calls.
•
The x25 map
command is
misconfigured.
(continued)
3.
Ensure that all router X.25 configuration options match the
settings of attached switches. Reconfigure the router or
switch as necessary.
4.
Enable the
debug x25 events
command and look for
RESTART messages (for PVCs) or CLEAR REQUESTs
with nonzero cause codes (for SVCs).
To interpret X.25 cause and diagnostic codes provided in the
debug x25 events
output, refer to the
Debug Command
Reference.
1.
LAPB = Link Access Procedure, Balanced
2.
UA = Unnumbered acknowledgment
3.
SAMB = Set Asynchronous Balance Mode
4.
PVC = permanent virtual circuit
5.
SVC = switched virtual circuit
6.
PVC = permanent virtual circuit
7.
SVC = switched virtual circuit
