MNS-BB
Software User Guide
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You can modify community names, add SNMP manager station or add trap station from this menu.
9.0
Monitoring and Analyzing Switch Operation
9.1 Overview
The LE2425A and LEV2525A Switches have several built-in tools for monitoring, analyzing, and
troubleshooting switch and network operations:
Status:
Includes options for displaying general Switch information, management address data, and
MAC addresses.
Event Log:
Lists Switch operating events and Alert events.
Configurable trap receivers:
Uses SNMP to enable management stations on your network to
receive the SNMP traps from the Switch.
Port monitoring (mirroring):
Copies all traffic from the specified ports to a designated monitoring
port.
9.2
Port Monitoring (Mirroring) Features
You can designate a port for monitoring traffic of one port (at a time) on the Switch. The Switch
monitors the network activity by copying all traffic from the specified monitoring source (monitor
port) to the designated monitoring (mirror or sniffer) port, to which a network analyzer can be
attached.
9.2.1
CLI: Configuring Port Monitoring
You must use the following configuration sequence to configure port monitoring in the CLI:
1. Assign a monitoring (mirroring) or sniffer port.
2. Designate the port to monitor.
To list the ports assigned to mirror (receive monitored traffic) and the ports being monitored you need
to use the command below:
Syntax
:
show port-mirror
For example, if you assign port 12 as the monitoring port and configure the Switch to monitor port 3,
show port-mirror
displays the following:
LE2425A #
show port-mirror
Port mirroring is Enabled
Monitor Port is : 3
Sniffer Port is : 12
Configuring the monitor port
assigns or removes a monitoring port. This must be executed from the
configuration level. Removing the monitor port disables port monitoring and resets the monitoring
parameters to their factory-default settings.
LE2425A #
port-mirror <enter>
LE2425A(port-mirror)##
syntax
:
setport monitor=<monitor port number> sniffer=<sniffer port number>
For example, to assign port 12 as the monitoring port and 3 as the monitored port,
type
LE2425A(port-mirror)##
setport monitor=3 sniffer=12
Port 3 set as Monitor Port
Port 12 set as Sniffer Port
To turn on or off the port monitoring
syntax
:
prtmr <enable|disable>
