Avaya ERS 2500, Руководство по устранению неисправностей

Страница: 19 / 90

Chapter 6: Initial troubleshooting
The types of problems that typically occur with networks involve connectivity and performance. Using the
Open System Interconnection (OSI) network architecture layers, and checking each in sequential order,
is usually best when troubleshooting. For example, confirm that the physical environment, such as the
cables and module connections, is operating without any failures before moving up to the network and
application layers.
As part of your initial troubleshooting, Avaya recommends that you check the Knowledge and Solution
Engine on the Avaya Web site for known issues and solutions related to the problem you are experiencing.
Gather information
Before contacting Avaya Technical Support, you must gather information that can help the
Technical Support personnel. This includes the following information:
•
Default and current configuration of the switch.
To obtain this
information, use the
show running-config
command.
• System status : Obtain this information using the
show sys-info
command. Output
from the command displays technical information about system status and information
about the hardware, software, and switch operation. For more detail, use the
show tech
command.
•
Information about past events
. To obtain this information, review the log files
using the
show logging
command.
• The software version that is running on the device. To obtain this information, use the
show sys-info
or
show system verbose
command to display the software version.
• A network topology diagram : Get an accurate and detailed topology diagram of your
network that shows the nodes and connections. Your planning and engineering function
should have this diagram.
• Recent changes : Find out about recent changes or upgrades to your system, your
network, or custom applications (for example, has configuration or code been changed).
Get the date and time of the changes, and the names of the persons who made them.
Get a list of events that occurred prior to the trouble, such as an upgrade, a LAN change,
increased traffic, or installation of new hardware.
• Connectivity information : When connectivity problems occur, get information on at least
five working source and destination IP pairs and five IP pairs with connectivity issues. To
obtain this information, use the following commands:
Troubleshooting November 2010 19