Chapter 5: Troubleshooting Tool Fundamentals; Troubleshooting Overview - Avaya 8800 Troubleshooting Manual

Chapter 5: Troubleshooting tool
This section provides conceptual information about the methods and tools that you can use to troubleshoot
and isolate problems in your Avaya Ethernet Routing Switch 8800/8600 network.

Troubleshooting overview

Connectivity and performance are typical problems that occur with networks. The Avaya
Ethernet Routing Switch 8800/8600 supports a range of diagnostic tools that 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 Avaya
Ethernet Routing Switch 8800/8600 network topologies. Other tools are more general in their
application. These tools help diagnose and monitor ingress and egress traffic on the Ethernet
Routing Switch 8800/8600.
When gathering information about a problem, consider the following information:
• Use the OSI model when troubleshooting. Start at Layer 1 to confirm that your physical
environment, such as cables and module connections, is operating without any failures
before moving to the network and application layer. Address Resolution Protocol (ARP)
can cause some difficulties; ARP operates at Layer 2 to resolve MAC addresses to IP
addresses (Layer 3).
• Router-specific tools and protocols help you gather information. Ethernet Routing Switch
8800/8600-specific tools are outlined in this document.
• Use client and server-based tools from Microsoft, Novell, Linux, and UNIX. For example,
use Windows tools such as ifconfig, ipconfig, winipcfg, and route print to obtain IP
information and routing tables. Servers also maintain route tables. The following section
shows the output of the route print command.
Microsoft(R) Windows DOS
(C)Copyright Microsoft Corp 1990-2001.
C:\DOCUME~1\USER>route print
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 12 f0 74 2a 87 ...... Intel(R) PRO/Wireless 2200BG Network Connection
- Packet Scheduler Miniport
0x3 ...00 14 38 08 19 c6 ...... Broadcom NetXtreme Gigabit Ethernet - Packet
Sch eduler Miniport
0x4 ...44 45 53 54 42 00 ...... Avaya IPSECSHM Adapter - Packet Scheduler Minip
ort
===========================================================================
===========================================================================
Troubleshooting
fundamentals
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