Configuring Port Mirroring For Local Traffic Analysis - Dell PowerConnect J-EX4200-24T Software Manual

NOTE: Interfaces used as output for a port mirror analyzer must be configured
as family
ethernet-switching
Configuring Port Mirroring for Local Traffic Analysis on page 3261
Configuring Port Mirroring for Remote Traffic Analysis on page 3261
Filtering the Traffic Entering an Analyzer on page 3262

Configuring Port Mirroring for Local Traffic Analysis

To mirror interface traffic or VLAN traffic on the switch to an interface on the switch:
Choose a name for the port mirroring configuration—in this case,
1.
employee-monitor —and specify the input—in this case, packets entering
and ge-0/0/1 :
[edit ethernet-switching-options]
user@switch# set analyzer employee-monitor input ingress interface ge–0/0/0.0
[edit ethernet-switching-options]
user@switch# set analyzer employee-monitor input ingress interface ge–0/0/1.0
Optionally, you can specify a statistical sampling of the packets by setting a ratio:
2.
[edit ethernet-switching-options]
user@switch# set analyzer employee-monitor ratio 200
When the ratio is set to 200, 1 of every 200 packets is mirrored to the analyzer. You
can use statistical sampling to reduce the volume of mirrored traffic, as a high volume
of mirrored traffic can be performance intensive for the switch. On J-EX8200 switches,
you can set a ratio only for ingress packets.
Configure the destination interface for the mirrored packets:
3.
[edit ethernet-switching-options]
user@switch# set analyzer employee-monitor output interface ge-0/0/10.0
Configuring Port Mirroring for Remote Traffic Analysis
To mirror traffic that is traversing interfaces or a VLAN on the switch to a VLAN for analysis
from a remote location:
Configure a VLAN to carry the mirrored traffic. This VLAN is called
1.
and given the ID of 999 by convention in this documentation:
[edit]
user@switch# set vlans remote-analyzer vlan-id 999
Set the uplink module interface that is connected to the distribution switch to trunk
2.
mode and associate it with the
[edit]
user@switch# set interfaces ge-0/1/1 unit 0 family ethernet-switching port-mode trunk
vlan members 999
.
remote-analyzer VLAN:
Chapter 126: Port Mirroring
ge-0/0/0
remote-analyzer
3261