System Logs; Ip Flow Information Export; Remote Packet Capture - Avaya WLAN 8100 Series Troubleshooting Manual

Troubleshooting Tools
The cable diagnostic tests only apply to Ethernet copper ports; fiber ports cannot be tested.
You can initiate a test on multiple ports at the same time. When you test a cable with the TDR,
if the cable has a 10/100 MB/s link speed, the link is broken during the test and restored only
when the test is complete. TDR test does not affect the gigabit links.

System logs

You can use the syslog messaging feature of the WLAN 8100 series products to manage event
messages. The WLAN 8100 series syslog software communicates with a server software
component named syslogd that resides on your management workstation.
The daemon syslogd is a software component that receives and locally logs, displays, prints,
or forwards messages that originate from sources that are internal and external to the
workstation. For example, syslogd software concurrently handles messages received from
applications running on the workstation, as well as messages received from an WLAN 8100
series device running in a network accessible to the workstation.

IP Flow information export

The WCS implements IP flow information e (IPFIX) for the wired ports. You can define flows
based on IP addresses and TCP/UDP ports, and collect statistics for these flows. The collected
statistics are exported to the IPFIX collector.
In Release 1.1, the only external collector supported is NetQOS. At this time, up to two
collectors can be supported. IPFIX data is exported from the switch in Netflow version 9 format.
Data is exported using UDP port 9995.

Remote packet capture

The WLAN 8100 system supports the capture of traffic on any of the AP interfaces. Two modes
of packet capture are supported: offline analysis mode and real-time analysis mode.
In offline analysis mode, the administrator can start a packet capture on a single AP interface
by issuing a command with filter specifications to the AP. The AP captures up to 2MB of data
and stores it in a capture file in libcap format. The file is overwritten every time a new capture
is started.
WCs can issue a command to stop capture at any time after the capture operation at the AP
begins. The capture operation stopd whenever the AP receives a command from the WCS to
stop the capture or when there is no space left in the capture file.
The administrator can specify the number of packets to be captured, the snapshot length of
the packet, the interface on which to capture, and a filter string. The administrator can specify
10 Avaya WLAN 8100 Troubleshooting Guide
Comments? infodev@avaya.com
August 2011