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New Member

Sniffer a VLAN

Hi,

I recently installed a Catalyst 2950 in my site.

I'd like to sniffer a single VLAN. What is the configuration I must do in one port to listeng all packets in a VLAN ?

Thanks.

Luciano Lima

2 REPLIES
New Member

Re: Sniffer a VLAN

This example shows how to configure the destination port for ingress traffic on VLAN 5 by using a security device that does not support 802.1Q encapsulation.

Switch(config)# monitor session 1 destination interface fastethernet0/5 ingress vlan 5

This example shows how to configure the destination port for ingress traffic on VLAN 5 by using a security device that supports 802.1Q encapsulation.

Switch(config)# monitor session 1 destination interface fastethernet0/5 encapsulation dot1q ingress vlan 5

New Member

Re: Sniffer a VLAN

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/12114ea1/2950scg/swspan.htm

Documentation for the 2950 series routers on SPAN and RSPAN.

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