Dell PowerConnect J-EX4200-24T Software Manual page 3320

Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS
Table 437: Port Mirroring Terminology (continued)
Term
Analyzer output interface
Also known as monitor port
Analyzer VLAN
Also known as monitor VLAN
Firewall-based analyzer
Input interface
Also known as mirrored ports or
monitored interfaces
Mirror ratio
Monitoring station
Native analyzer session
Policy-based mirroring
Protocol analyzer application
Remote port mirroring
3248
Description
Interface to which mirrored traffic is sent and to which a protocol analyzer application is
connected.
NOTE: Interfaces used as output for a port mirror analyzer must be configured as family
.
ethernet-switching
Analyzer output interfaces have the following limitations:
Cannot also be a source port.
Cannot be used for switching.
Do not participate in Layer 2 protocols, such as Spanning Tree Protocol (STP), when
part of a port mirroring configuration.
When configured as an analyzer output interface, they lose any existing VLAN associations.
If the bandwidth of the analyzer output interface is not sufficient to handle the traffic from
the source ports, overflow packets are dropped.
VLAN to which mirrored traffic is sent. The mirrored traffic can be used by a protocol analyzer
application. The monitor VLAN is spread across the switches in your network.
An analyzer session that has only an "output" stanza. A firewall-based analyzer must be
used along with a firewall filter to achieve the functionality of an analyzer.
An interface on the switch that is being mirrored, either on traffic entering or exiting the
interface. An input interface cannot also be an output interface for an analyzer.
See statistical sampling.
A computer running a protocol analyzer application.
An analyzer session that has both "input" and "output" stanzas.
Mirroring of packets that match the match items in the defined firewall filter term. The
action item
analyzer analyzer-name
port mirror analyzer.
An application used to examine packets transmitted across a network segment. Also
commonly called network analyzer, packet sniffer, or probe.
Functions the same as local port mirroring, except that the mirrored traffic is not copied to
a local analyzer port but is flooded into an analyzer VLAN that you create specifically for
the purpose of receiving mirrored traffic.
In the intermediate switch, you can avoid flooding of the mirrored traffic to the member
ports of the VLAN by setting the "ingress only" attribute to the incoming ports of the VLAN
and the "egress only" attribute to the outgoing port of the VLAN.
is used in the firewall filter to send the packets to the