Allied Telesis 2.6.1 manual Using Trace Route for IP Traffic, Check route tables

Maintenance and Troubleshooting 117

3.Check for file server on Remote Office switch

Does the file server appear in the IPX service table of the Remote Office switch? If the server does not appear in the table, its presence is not advertised to the local LAN. To check this, enter the command:

SHOW IPX SERVICE

This should produce a display like that shown in Figure 29 on page 117. The important point is that the file server must appear in the service table on the Remote Office switch and there must be a route to the file server’s internal network number. If there is, and it still does not work, contact your authorised distributor or reseller for assistance.

Figure 29: Example output from the SHOW IPX SERVICES command for a basic Novell IPX network

IPX services
Name			Age
Address	Server type	Circuit	Hops Defined

--------------------------------------------------------------------------------

ACCOUNTS					0
00007500:000000000001:0451	0004:Fileserver	1	(vlan1)	1	SAP
ACCOUNTS					0
00007500:000000000001:8104	0107:RCconsole	1	(vlan1)	1	SAP
TYPISTS					0
00000012:0080488018d8:0451	0004:FileServer	1	(ppp0)	2	SAP

--------------------------------------------------------------------------------

To interpret output from the SHOW IPX SEVICES command see the Novell

IPX chapter in the AT-8800 Series Switch Software Reference.

4.Check route tables

To check the route tables on both switches, enter the command:

SHOW IPX ROUTE

Check for the presence of networks on the remote side of the wide area network. If the remote network is missing from the route table on either switch, enter the command:

RESET IPX

which resets the IPX routing software and forces the switches to broadcast their routing and service tables.

Using Trace Route for IP Traffic

You can use trace route to discover the route that packets pass between two systems running the IP protocol. Trace route sends an initial UDP packets with the Time To Live (TTL) field in the IP header set starting at 1. The TTL field is increased by one for every subsequent packet sent until the destination is reached. Each hop along the path between two systems responds with a TTL exceeded packet and from this the path is determined.

To initiate a trace route, enter the command:

TRACE [[IPADDRESS=]ipadd] [MAXTTL=number] [MINTTL=number] [NUMBER=number] [PORT=port-number] [SCREENOUTPUT={YESNO}] [SOURCE=ipadd] [TIMEOUT=number] [TOS=number]

Software Release 2.6.1 C613-02039-00 REV A