home *** CD-ROM | disk | FTP | other *** search
-
- IN CASE OF TROUBLE
-
- Here is a list of common problems and their solutions as well as some
- very useful debugging techniques. Using these techniques should enable you
- to find most problems. Please let me know if this guide is insufficient.
-
- In general there are three sources of good information for debugging PCroute
- they are.
-
- PCROUTE.LOG - This file is created and written to when PCroute
- first starts up. PCroute writes out all its
- configuration data to insure that is it what you
- think it is, and to make sure the hardware is
- working properly.
-
- Logging host - Once PCroute boots up, it sends diagnostic information
- to the logging host. This is useful for debugging
- dynamic problems.
-
- 3rd Party - Much information can be gained by using PING
- (either to or though the router) traceroute (if you
- have it) and examine the routing tables (for
- RIP problems).
-
- ----------------------------------------------------------------------------
- PROBLEM: Can't PING PCroute from either local net (PCroute seems dead).
-
- The first thing to check is the PCROUTE.LOG file on the floppy.
-
- PCROUTE.LOG does not exist
- Make sure the floppy is not write protected.
- Make sure the floppy is bootable and that PCroute
- is run in the autoexec file.
- If necessary install a monitor and check the boot sequence
-
- If PCROUTE.LOG says the configuration file is corrupt, you must
- rerun config.exe. If that does not work make sure you are
- using the config.exe that came with the version of PCroute that
- you are running. If that does not work, delete PCROUTE.CFG
- and rerun config.exe from scratch.
-
- Check the ethernet addresses in the PCROUTE.LOG file. If any
- are FFFFFFFFF, that means the card does not have the I/O
- address set properly, and the software cannot find the card.
-
- Check that the IP addresses in PCROUTE.LOG are correct. Remember
- for the precompiled PCroute.exe interface 1 is the card with
- I/O address 280H, and interface 2 is the card with I/O
- address 2A0H. Make sure they are not mixed up.
-
- Check the ethernet card to make sure it is set for the correct
- type of ethernet (THIN or THICK)
-
- Check the cabling to the ethernet.
-
- ----------------------------------------------------------------------------
- PROBLEM: The network comes to a halt when PCroute is brought up
-
- This symptom indicates a broadcast storm. This is caused not by
- PCroute but by some other (OLD) IP host. Try turning off directed
- broadcasts on all interfaces of PCroute (Bit 3 of the interface flags)
- This usually stops the problem, but the real solution is to update
- all old networking software.
-
- ----------------------------------------------------------------------------
- PROBLEM: PCroute can be pinged, but no messages are received by the
- logging host.
-
- Check PCROUTE.LOG to make sure that the logging host IP address is
- correct.
-
- Try Pinging PCroute from the logging host, if you cannot there is
- a routing problem (see below). If possible, choose a logging
- host that is on a local network.
-
- Maybe you simply filtered out all of the messages, so that PCroute
- SHOULD send nothing. Good production settings for the filter
- parameters are (mask 0, priority 7), for debugging you should
- use (mask 0, priority 8) and if you set it to (mask 0 priority 9)
- PCroute will send 'I'M ALIVE' messages every minute.
-
- Make sure that the /etc/syslog.conf file is set up properly it should
- be listening for logging messages from facility 'local0' and
- priority 'debug' (everything).
-
- ----------------------------------------------------------------------------
- PROBLEM: PCroute can be pinged from a local net, but not a remote net.
-
- This is either a a routing problem or a subnetting problem, to
- test if it is a subnet problem, ping a host OUTSIDE your subnet
- from a host that must route through PCroute to get there. In the
- example, pinging any host that does NOT begin with 129.105 from
- a host on net A will do the job. If this ping succeeds, the subnetting
- mask is wrong and needs to be changed.
-
- If it is a routing problem, try inserting a static route, it that solves
- the problem, make sure that the other gateways are broadcasting
- RIP properly.
-
-
-