monitor
monitor
[
ethernet
stackid/slot/port
]
{
both
|
input
|
output
}
no monitor
[
ethernet
stackid/slot/port
]
{
both
|
input
|
output
}
Ports are not monitored.
Interface configuration mode
VLAN configuration mode
If you configure both ACL mirroring and ACL-based rate limiting on the same port, then all packets that match are mirrored, including the packets that exceed the rate limit. The same port cannot be both a monitored port and the mirror port. The same port can be monitored by one mirror port for ingress traffic and another mirror port for egress traffic. The mirror port cannot be a LAG port. More than one monitored port can be assigned to the same mirror port.
For stacked devices, if the ingress and egress analyzer ports are always network ports on the local device, each device may configure the ingress and egress analyzer port independently. However, if you need to mirror to a remote port, then only one ingress and one egress analyzer port are supported for the entire system.
The
no form of the command stops monitoring the mirrored ports.
The following example shows how to monitor the mirrored ports.
device(config)# interface ethernet 1/2/11 device(config-if-e1000-1/2/11)# monitor ethernet 1/2/4 both
The following example shows how to configure VLAN-based mirroring.
device(config)# mirror-port ethernet 1/1/21 input device(config)# vlan 10 device(config-vlan-10)# monitor ethernet 1/1/21 device(config-vlan-10)# exit device(config)# vlan 20 device(config-vlan-20)# monitor ethernet 1/1/21 device(config-vlan-20)# end