Paul wrote: > > Hi all, > > Quick question, I have enabled SPAN to mirror from one port to > another. > However, when doing so the transmitting port appears detached > form the > network. i.e.. I cannot ping from the PC attached to that port > and nothing on > the network can ping it too. When I remove the port from the > session I get > connectivity again. Could anyone give me any ideas on why this > is occurring > please.
If I understand what you're saying, that's normal. SPAN sends traffic to and from one or more "source ports" to a "destination port." A protocol analyzer resides at the destination port. The source ports are the monitored ports whose traffic you want to analyze. I'm not sure what you mean by "transmitting port." Cisco doesn't use that term becauses it's too unclear which port it refers to. Now that we have the terminology straight :-), it's normal for traffic to be disrupted to and from the destination port where the analyzer resides. Per the config guide for the 4000, "Once an interface becomes an active destination interface, incoming traffic is disabled. You cannot configure a SPAN destination interface to receive ingress traffic. The interface does not forward any traffic except that required for the SPAN session. " It is not normal for the traffic to be disrupted for the source port. If that's what you're saying, then you better tell us more about the config and the output from show monitor session. I'm guessing that's not what you meant though... Priscilla > > I used the 'monitor session' command and left it blank at the > end implying > 'both' rather than explicitly specifying 'TX or 'RX. None of > the ports are > involved in trunking, they are in the same VLAN and they are on > the same > physical switch, and even on the same blade (4006). > > Any help would be greatly appreciated. > > Kind regards > > Paul .... > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72518&t=72507 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
