Web Management Guide

Table Of Contents
Chapter 4
| Interface Configuration
Port Configuration
– 110
Configuring Remote
Port Mirroring
Use the Interface > Port > RSPAN page to mirror traffic from remote switches for
analysis at a destination port on the local switch. This feature, also called Remote
Switched Port Analyzer (RSPAN), carries traffic generated on the specified source
ports for each session over a user-specified VLAN dedicated to that RSPAN session
in all participating switches. Monitored traffic from one or more sources is copied
onto the RSPAN VLAN through IEEE 802.1Q trunk or hybrid ports that carry it to any
RSPAN destination port monitoring the RSPAN VLAN as shown in the figure below.
Figure 35: Configuring Remote Port Mirroring
Command Usage
Traffic can be mirrored from one or more source ports to a destination port on
the same switch (local port mirroring as described in “Configuring Local Port
Mirroring” on page 108), or from one or more source ports on remote switches
to a destination port on this switch (remote port mirroring as described in this
section).
Configuration Guidelines
Take the following step to configure an RSPAN session:
1.
Use the VLAN Static List (see “Configuring VLAN Groups” on page 147) to
reserve a VLAN for use by RSPAN (marking the “Remote VLAN” field on this
page. (Default VLAN 1 is prohibited.)
2.
Set up the source switch on the RSPAN configuration page by specifying
the mirror session, the switchs role (Source), the RSPAN VLAN, and the
uplink port. Then specify the source port(s), and the traffic type to monitor
(Rx, Tx or Both).
3.
Set up all intermediate switches on the RSPAN configuration page, entering
the mirror session, the switchs role (Intermediate), the RSPAN VLAN, and
the uplink port(s).
Source Switch
Intermediate SwitchIntermediate Switch
Destination Switch
Source Port Destination PortUplink Port Uplink Port
Uplink Port Uplink Port
Ingress or egress traffic
is mirrored onto the RSPAN
VLAN from here.
Tagged or untagged traffic
from the RSPAN VLAN is
analyzed at this port.
RPSAN VLAN