Cisco Systems 3560 Manual De Usuario

A physical port that belongs to an EtherChannel group can be configured as a SPAN source port and 
still be a part of the EtherChannel. In this case, data from the physical port is monitored as it 
participates in the EtherChannel. However, if a physical port that belongs to an EtherChannel group 
is configured as a SPAN destination, it is removed from the group. After the port is removed from 
the SPAN session, it rejoins the EtherChannel group. Ports removed from an EtherChannel group 
remain members of the group, but they are in the inactive or suspended state.

If a physical port that belongs to an EtherChannel group is a destination port and the EtherChannel 
group is a source, the port is removed from the EtherChannel group and from the list of monitored 
ports. 

Multicast traffic can be monitored. For egress and ingress port monitoring, only a single unedited 
packet is sent to the SPAN destination port. It does not reflect the number of times the multicast 
packet is sent.

A private-VLAN port cannot be a SPAN destination port.

A secure port cannot be a SPAN destination port.

For SPAN sessions, do not enable port security on ports with monitored egress when ingress 
forwarding is enabled on the destination port. For RSPAN source sessions, do not enable port 
security on any ports with monitored egress.

An IEEE 802.1x port can be a SPAN source port. You can enable IEEE 802.1x on a port that is a 
SPAN destination port; however, IEEE 802.1x is disabled until the port is removed as a SPAN 
destination.

For SPAN sessions, do not enable IEEE 802.1x on ports with monitored egress when ingress 
forwarding is enabled on the destination port. For RSPAN source sessions, do not enable 
IEEE 802.1x on any ports that are egress monitored.

These sections contain this configuration information:

 shows the default SPAN and RSPAN configuration.

SPAN state (SPAN and RSPAN)

Disabled.

Source port traffic to monitor

Both received and sent traffic (both).

Encapsulation type (destination port)

Native form (untagged packets).

Ingress forwarding (destination port)

Disabled