Figure 1 on page 85 shows the network topology for both these example scenarios.
Figure 1: Remote Mirroring Network Topology Example
In this example:
a. Interface ge-0/0/0 is a Layer 2 interface, and interface ge-0/0/1 is a Layer 2 interface
(both interfaces on the source switch) that serve as connections for employee
computers.
b. Interface ge-0/0/10 is a Layer 2 interface that connects the source switch to the
destination switch.
c. Interface ge-0/0/5 is a Layer 2 interface that connects the destination switch to the
remote monitoring station.
d. VLAN remote-analyzer is configured on all switches in the topology to carry the mirrored
traffic.
Mirroring Employee-to-Web Traffic for Remote Analysis
To configure port mirroring for remote traffic analysis of employee-to-Web traffic, perform
these tasks:
CLI Quick
Configuration
To quickly configure port-mirroring to mirror employee traffic to the external Web, copy
the following commands and paste them into the switch terminal window:
• Copy and paste the following commands in the source switch terminal window:
[edit]
set forwarding-options port-mirroring instance employee-web-monitor output vlan 999
set vlans remote-analyzer vlan-id 999
set interfaces ge-0/0/10 unit 0 family ethernet-switching interface-mode access
set interfaces ge-0/0/10 unit 0 family ethernet-switching vlan members 999
set firewall family ethernet-switching filter watch-employee term employee-to-corp from
destination-address 192.0.2.16/28
set firewall family ethernet-switching filter watch-employee term employee-to-corp from
source-address 192.0.2.16/28
85Copyright © 2016, Juniper Networks, Inc.
Chapter 9: Port Mirroring for Remote Destinations
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