Web Management Guide

Table Of Contents
Chapter 4
| Interface Configuration
Port Configuration
– 111
4.
Set up the destination switch on the RSPAN configuration page by
specifying the mirror session, the switchs role (Destination), the destination
port
2
, whether or not the traffic exiting this port will be tagged or
untagged, and the RSPAN VLAN. Then specify each uplink port where the
mirrored traffic is being received.
RSPAN Limitations
The following limitations apply to the use of RSPAN on this switch:
RSPAN Ports – Only ports can be configured as an RSPAN source,
destination, or uplink; static and dynamic trunks are not allowed. A port can
only be configured as one type of RSPAN interface – source, destination, or
uplink. Also, note that the source port and destination port cannot be
configured on the same switch.
Local/Remote Mirror – The destination of a local mirror session (created on
the Interface > Port > Mirror page) cannot be used as the destination for
RSPAN traffic.
Spanning Tree – If the spanning tree is disabled, BPDUs will not be flooded
onto the RSPAN VLAN.
MAC address learning is not supported on RSPAN uplink ports when RSPAN
is enabled on the switch. Therefore, even if spanning tree is enabled after
RSPAN has been configured, MAC address learning will still not be re-
started on the RSPAN uplink ports.
IEEE 802.1X – RSPAN and 802.1X are mutually exclusive functions. When
802.1X is enabled globally, RSPAN uplink ports cannot be configured, even
though RSPAN source and destination ports can still be configured. When
RSPAN uplink ports are enabled on the switch, 802.1X cannot be enabled
globally.
Port Security – If port security is enabled on any port, that port cannot be
set as an RSPAN uplink port, even though it can still be configured as an
RSPAN source or destination port. Also, when a port is configured as an
RSPAN uplink port, port security cannot be enabled on that port.
Parameters
These parameters are displayed:
Session
– A number identifying this RSPAN session. (Range: 1-2)
Only two mirror sessions are allowed, including both local and remote
mirroring. If local mirroring is enabled (see page 108), then there is only one
session available for RSPAN.
2. If the RSPAN packets are configured as untagged, then the destination port type cannot be trunk
mode (see Adding Static Members to VLANs” on page 150).