PCI Token Ring Administrator's Guide

Troubleshooting Token Ring
Diagnostic Flowcharts
Chapter 4 99
Flowchart 5 Procedures
A. Execute ping to remote host. Using ping(1M), send a message to
the remote host to which you are having problems connecting. For
example:
ping bunny
B. ping successful? A message is printed on stdout for each ping
packet returned by the remote host. If packets are being returned,
your system has network level connectivity to the remote host.
You may find it useful to note what percentage of the total packets
are lost, if any. Losing ten percent or more may indicate the network
or remote host is extremely busy. You may also find it useful to note
the round-trip transmission times. Periodically, high transmission
times may indicate that the network or remote host is extremely
busy. Consistently high transmission times may indicate the local
host is extremely busy. If a message is not returned after executing
ping, ping is not successful. Do Cntrl C to stop the ping output.
C. Command hangs? Use Cntrl C to exit from ping(1M).
D. Network unreachable? If so, check the status of the local Token
Ring interface first using lanscan(1M).
E. Check the Internet address. Check the remote host Internet
address. It should have the same network number as the local
Internet address. To bring up the interface, issue ifconfig(1M), e.g.,
ifconfig lan1 192.6.1.17 up.
F. Unknown host? Error= Unknown host hostname (alias)?
G. Correct BIND, YP or /etc/hosts configuration. Add the missing
host name and start again with flowchart 5.
H. No route to host? Error= Sendto: No route to host? If so, go to
flowchart 6. Otherwise, call your HP representative.