Information Technology Reference
In-Depth Information
Table 8-3 outlines the problems that might cause this symptom and describes solutions to those
problems.
Table8-3
Novell IPX: Client Cannot Connect to Server over PSN
Possible Problem
Solution
Address mapping
error
1. Use the show running-config privileged exec command to
view the configuration of the router.
2. Depending on your PSN environment, look for any x25 map
ipx, frame-relay map ipx , 1 or smds static-map ipx 2
interface configuration command entries in the router
configuration.
Make sure that the address mapping specified by these
commands is correct:
For X.25, address mapping maps host protocol addresses to
the host's X.121 address.
For Frame Relay, address mapping maps a next-hop protocol
address and the DLCI 3 used to connect to the address.
For SMDS, address mapping defines static entries for SMDS
remote peer routers.
For more information about configuring address maps, refer to
the Cisco IOS Wide Area Networking Configuration Guide and
Wide Area Networking Command Reference .
Encapsulation
mismatch
1.
Use the show interfaces privileged exec command to
determine the encapsulation type being used (such as X.25,
Frame Relay, or SMDS encapsulation). Look for output
similar to the following:
Serial0 is up, line protocol is up
Hardware is MCI Serial
Internet address is 192.168.54.92 255.255.255.0
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely
255/255, load 1/255
Encapsulation FRAME-RELAY, loopback not set, keepalive
set (10 sec)
2. If an encapsulation command is not present, the default is
HDLC 4 encapsulation. For PSN interconnection, you must
explicitly specify the proper encapsulation type (such as
encapsulation x25 for an X.25 connection).
Configure the proper encapsulation type, and use the show
interfaces command to verify that the encapsulation type is
correct.
Misconfigured
DLCI
assignments
(Frame Relay
only)
Use the show frame-relay map exec command on the hub
router to see the Frame Relay map assignments currently
configured.
1.
Check each Frame Relay map statement to ensure that the
DLCI assignments are correctly configured. Make sure that
you use the DLCIs obtained from your Frame Relay
provider. Remember that DLCI values are locally
significant.
2.
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