[edit forwarding-options port-mirroring instance pm-instance-name family family]
b.
user@host# edit output
5. Specify mirror destination properties.
a.
Specify the physical interface on which to send the mirrored packets:
[edit forwarding-options port-mirroring instance pm-instance-name family family
output]
user@host# set interface interface-name
b.
(Optional) Allow configuration of filters on the destination interface for the global
port-mirroring instance:
[edit forwarding-options port-mirroring instance pm-instance-name family family
output]
user@host# set no-filter-check
NOTE: You cannotconfigure port mirroring instances on MX80 routers.
You can only configure port mirroring at the global level on MX80
routers.
6.
(Optional) Specify that any packets selected for mirroring are to be mirrored only
once to any mirroring destination:
[edit forwarding-options port-mirroring instance pm-instance-name family family
output]
user@host# up 3
[edit forwarding-options port-mirroring]
user@host# set mirror-once
TIP: Enable the global mirror-once option when an MX Series router or an
EX Series switch is configured to perform Layer 2 port mirroring at both
ingress and egress interfaces, which could result in sending duplicate
packets to the same destination (which in turn would complicate the
analysis of the mirrored traffic).
7. To configure a mirroring destination for a different packet family type, repeat steps 4
through 6.
8.
Verify the minimum configuration of the named instances of Layer 2 port mirroring:
[edit forwarding-options ... ]
user@host# top
[edit]
user@host# show forwarding-options
forwarding-options {
port-mirroring {
... optional-global-port-mirroring-configuration ...
instance {
pm-instance-name ( # A named instance of port mirroring
input { # Packet-selection properties
Copyright © 2016, Juniper Networks, Inc.26
Port Mirroring Feature Guide for EX9200 Switches
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