Troubleshooting Fundamentals - Nortel 8300 Troubleshooting Manual

Troubleshooting fundamentals

This section provides conceptual information about the methods and tools
that you can use to troubleshoot and isolate problems in your Ethernet
Routing Switch 8300 network.
The types of problems that typically occur with networks involve connectivity
and performance. The Ethernet Routing Switch 8300 supports a diverse
range of network architectures and protocols, some of which are used to
maintain and monitor connectivity and isolate connectivity faults.
In addition, the Ethernet Routing Switch 8300 supports a wide range of
diagnostic tools that you can use to monitor and analyze traffic, capture and
analyze data packets, trace data flows, view statistics, and manage event
messages.
Certain protocols and tools are tailored for troubleshooting specific Ethernet
Routing Switch 8300 network topologies. For instance, the Connectivity
Fault Management (CFM), the IEEE standard 802.1ag, is used to maintain
connectivity for Provider Backbone Transport (PBT) trunks and service
instances. Other tools are more general in their application and can be
used to diagnose and monitor ingress and egress traffic on the Ethernet
Routing Switch 8300.
When connectivity problems occur and the source of the problem is
unknown, it is usually best to follow the OSI network architecture layers.
Therefore, confirm that your physical environment, such as the cables and
module connections, is operating without any failures before moving up to
the network and application layers.
Nortel recommends that you use debugging procedures only under Global
Product Support (GPS) team guidance. To contact the GPS team, call
1-8004NORTEL (1-800-466-7835).
The following provides a summary of the different troubleshooting tools
and their application.
Copyright © 2007, Nortel Networks
.
ATTENTION
Nortel Ethernet Routing Switch 8300
Troubleshooting
NN46200-704 01.01 Standard
4.0 29 October 2007
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