KB.15.15

Remote destinations

A remote mirroring traffic destination is an HP switch configured to operate as the exit switch for

mirrored traffic sessions originating on other HP switches. As of June, 2007, switches capable of

this operation include the following HP switches:

• 3500yl

• 5400zl

• 6200yl

• 8200zl

CAUTION: After you configure a mirroring session with traffic-selection criteria and a destination,

the switch immediately starts to mirror traffic to each destination device connected to an exit port.

In a remote mirroring session that uses IPv4 encapsulation, if the intended exit 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, HP Switch strongly recommends that you configure the

exit switch for a remote mirroring session before configuring the source switch for the same session.

Monitored traffic sources

You can configure mirroring for traffic entering or leaving the switch on:

• Ports and static trunks

Provides the flexibility for mirroring on individual ports, groups of ports, static port trunks, or

any combination of these..

• Meshed ports

Enables traffic mirroring on all ports configured for meshing on the switch.

• Static VLANs

Supports traffic mirroring on static VLANs configured on the switch. This option enables easy

mirroring of traffic from all ports on a VLAN. It automatically adjusts mirroring to include traffic

from newly added ports and to exclude traffic from ports removed from the VLAN.

Criteria for selecting mirrored traffic

On the monitored sources listed above, you can configure the following criteria to select the traffic

you want to mirror:

• Direction of traffic movement (entering or leaving the switch, or both.)

• Type of IPv4 or IPv6 traffic entering the switch, as defined by a classifier-based service policy.

In software release K.14.01 or greater, classifier-based service policies replace ACL-based

traffic selection in mirroring sessions.

• Source and/or destination MAC addresses in packet headers.

Mirroring configuration

Table 22 (page 345) shows the different types of mirroring that you can configure using the CLI,

Menu, and SNMP interfaces.

344 Monitoring and Analyzing Switch Operation