Information Technology Reference
In-Depth Information
XNS: Clients Cannot Connect to Server over PSN
Symptom:
Clients cannot connect to servers across a PSN. Clients can communicate with servers
located on the local network.
Table 14-3 outlines the problems that might cause this symptom and describes solutions to those
problems.
Table14-3 XNS: Clients Cannot Connect to Server over PSN
Possible Problem
Solution
Address mapping
error
Use the
show running-config privileged exec
command to
view the configuration of the router.
1.
If you are running X.25, make sure
x25 map xns
interface
configuration commands are properly configured. Make sure
MAC addresses and X.121 addresses are correctly specified.
2.
If you are running Frame Relay, make sure
frame-relay map xns
interface configuration commands are
properly configured. Make sure MAC addresses and DLCIs
1
are correctly specified.
3.
Mismatched
router network
number
1.
Check the network numbers of network servers. This
information will be provided by the local XNS server
administration staff.
2.
Check the network number specified on the server side of the
router.
3.
Compare the network numbers. If they do not match,
reconfigure the router or servers as appropriate, with the
correct network number.
4.
If the network numbers match, check the router interface on
the client side and make sure the assigned network number
is unique with respect to all network numbers in the XNS
internetwork.
Encapsulation
mismatch
1.
Use the
show interfaces exec
command to determine the
encapsulation type being used (such as
encapsulation x25
).
2.
If an encapsulation command is not present, the default is
HDLC
2
encapsulation. For PSN interconnection, you must
explicitly specify an encapsulation type. To set the
encapsulation method used by the interface, use the
encapsulation
interface configuration command.
Syntax:
encapsulation
encapsulation-type
