PCI Token Ring Administrator's Guide

Troubleshooting Token Ring
Diagnostic Flowcharts
Chapter 4108
Flowchart 9 Procedures
A. Execute ping from known good host through gateway to
known good remote host. This will test gateway connectivity to
the remote network.
B. Successful? If the executing ping returned successfully, the problem
may exist in the routing table for the problem host. Go to C.
C. Check route table on problem host and all hosts in between.
Execute netstat -r to examine a route table.
D. Examine gateway. If the gateway is an HP 9000, go to G. If it is
not, go to F.
E. Correct route tables. Ensure that the proper IP/Internet addresses
are assigned in the Destination and Gateway fields. If you are using
subnetting, make sure that the destination is what you expect: a
network or a host.
F. Other HP or other vendors, refer to networking
documentation. Refer to the documentation that came with the
gateway for additional diagnostics.
G. If HP 9000, execute ifconfig on gateway host. Execute ifconfig
for all network interfaces on the gateway. Go to H.
H. Network interface up? If the output from ifconfig does not include
the UP parameter, the network interface is down. Execute netstat -i
to check the status of the network interfaces. An asterisk (*)
indicates that the interface is down. If the network interface is down,
go to flowchart 4 to bring it up.
If the network interfaces are UP, start again with flowchart 2 if S800
HP-PB or 2A if HP 9000 EISA. Using flowchart 2 or 2A, test all
network interfaces on the gateway.