PCI Token Ring Administrator's Guide

Troubleshooting Token Ring
Diagnostic Flowcharts
Chapter 478
Diagnostic Flowcharts
Below is a summary of the types of network tests in the diagnostic
flowcharts. To diagnose your problem, first check the connections and
configuration on your system (flowcharts 1 through 4). If this does not
solve your problem, use flowcharts 5, 6, 7, 8, and 9 to test/verify
connectivity with a remote system.
Token Ring Connections Test: Checks that all the hardware
connections between your system and the Token Ring network are
connected and operational.
Configuration Test: Verifies the configuration of the network interface
on a host using the lanscan(1M), ioscan(1M), lanadmin(1M), and
ifconfig(1M) commands.
Network Level Loopback Test: Checks round trip communication
between Network Layers on the source and target hosts using the
ping(1M) command.
Transport Level Loopback Test: Checks round trip communication
between Transport Layers on the source and target hosts using ARPA
services telnet and ftp commands.
Link Level Loopback Test: Checks round trip communication between
Link Levels on the source and target hosts using the linkloop(1M)
diagnostic.
Table 4-1 List of Flowcharts
Flowchart Description
1 Token Ring Connections Test
2, 2A, 3, 3A, 4 Configuration Test
5, 6 Network Level Loopback Test
7 Transport Level Loopback Test (using
ARPA)
8 Link Level Loopback Test
9 Bridge/Gateway Loopback Test