Configure The Monitored Traffic In A Mirror Session; Traffic Selection Options; Mirroring-Source Restrictions - HP Aruba JL253A Management And Configuration Manual

CAUTION: After you configure a mirroring session with traffic-selection criteria and a destination, the
switch immediately starts to mirror traffic to the destination device connected to each exit port. In a
remote mirroring session that uses IPv4 encapsulation, if the remote (endpoint) switch is not already
configured as the destination for the session, its performance may be adversely affected by the
stream of mirrored traffic. For this reason, Hewlett Packard Enterprise strongly recommends that you
configure the endpoint switch in a remote mirroring session, as described on the previous page in the
section titled "For a remote mirroring session", before using the mirror remote ip command in
this section to configure the mirroring source for the same session.

Configure the monitored traffic in a mirror session

This step configures one or more interfaces on a source switch with traffic-selection criteria to select the traffic to
be mirrored in a local or remote session configured in section.

Traffic selection options

To configure traffic mirroring, specify the source interface, traffic direction, and criteria to be used to select the
traffic to be mirrored by using the following options:
• Interface type
◦ Port, trunk, and/or mesh
◦ VLAN
◦ Switch (global configuration level)
• Traffic direction and selection criteria
◦ All inbound and/or outbound traffic on a port or VLAN interface
◦ Only inbound IP traffic selected with an ACL (deprecated in software release K.14.01 and greater)
◦ Only inbound IPv4 or IPv6 traffic selected with a classifier-based mirroring policy
◦ All inbound and/or outbound traffic selected by MAC source and/or destination address
The different ways to configure traffic-selection criteria on a monitored interface are described in the following
sections.

Mirroring-source restrictions

In a mirroring session, you can configure any of the following sources of mirrored traffic:
• Multiple port and trunk, and/or mesh interfaces
• One VLAN
If you configure a VLAN as the source interface in a mirroring session and assign a second VLAN to the
session, the second VLAN overwrites the first VLAN as the source of mirrored traffic.
• One classifier-based policy
If you configure a mirroring policy on a port or VLAN interface to mirror inbound traffic in a session, you cannot
configure a port, trunk, mesh, ACL, or VLAN as an additional source of mirrored traffic in the session.
• Up to 320 MAC addresses (used to select traffic according to source, destination MAC address, or both) in all
mirroring sessions configured on a switch
432 Aruba 2930F / 2930M Management and Configuration Guide
for ArubaOS-Switch 16.08