Motorola EX-3524, Cli Reference Manual

Page: 337 / 617

Chapter 13
| Port Mirroring Commands
RSPAN Mirroring Commands
– 337 –
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.
Only 802.1Q trunk or hybrid (i.e., general use) ports can be configured as an
RSPAN uplink or destination port – access ports are not allowed (see
switchport
mode ).
◆
Local/Remote Mirror – The destination of a local mirror session (created with the
port monitor command) cannot be used as the destination for RSPAN traffic.
Only two mirror sessions are allowed. Both sessions can be allocated to remote
mirroring, unless local mirroring is enabled (which is limited to a single session).
◆
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.
RSPAN uplink ports cannot be configured to use IEEE 802.1X Port
Authentication, but RSPAN source ports and destination ports can be
configured to use it
◆
Port Security – If port security is enabled on any port, that port cannot be set as
an RSPAN uplink port, source port, or destination port. Also, when a port is
configured as an RSPAN uplink port, source port, or destination port, port
security cannot be enabled on that port.