mirror a port

[ohareka70]

Hello,

At moment I have mirrored a single port and am pointing the data back to the netflow server:

• monitor session 2 source interface Gi1/0/28 (data I want to capture)
  
• monitor session 2 destination interface Gi1/0/17 (mirrored port)
  

Is it possible though to mirror a Port-channel1 (trunk port)?

• interface Port-channel1
  
• switchport trunk encapsulation dot1q
  
• switchport mode trunk
  

Is it also possible to mirror a VLAN?

• vlan 226
  
• name SAN
  

• if so does anyone have the config for both?
  

[nawas · Accepted solution]

Yes, you can monitor a port channel, matter of fact if a physcial is part of a port channel you would have to add its port

channel in your source span using the following

• monitor session 2 source interface port-chanenl-1 (mirrored port)

Use the following command for vlan span

switch(config)#monitor sess 2 source vlan ?

  <1-4094>  SPAN source VLAN

[cadet alain · Accepted solution]

Hi,

yes you can do SPAN for a portchannel as source only and for vlan also.

so just specify interface port-channel 1 in source or the vlan you want to monitor.

Regards.

Alain

Don't forget to rate helpful posts.

[ohareka70]

thanks for the advice - spot on.

regards,

Kevin