Hi Guys,

I'm just new here and trying to learn to use PRTG, I have setup a lab environment which I want to test capturing traffic.

I have a cisco C3560E switch and a server with PRTG installed and running OK. On the Cisco switch I have the int0/1 going to the Firewall and configured to be the source. While the PRTG server is connected to the int0/24 of the switch and configured to be the destination.

However, as soon as I configured int0/24 to be the destination PRTG loses connectivity to everything.

switch#sh run Building configuration...

Current configuration : 1862 bytes ! <SNIP> interface GigabitEthernet0/1 ! interface GigabitEthernet0/24 ! monitor session 1 source interface Gi0/1 monitor session 1 destination interface Gi0/24 end

switch#

Am I doing it correctly? I am really sorry, I know this is really dumb.

Thanks, James

Article Comments

Dear jvictorio,

could it be that the packet sniffer sensor gets overloaded with that configuration? Beside using a more powerful CPU, you can try to set an input filter in the packet sniffer sensor settings. This means to narrow down what will be analyzed, but also can offload the CPU.


Dec, 2017 - Permalink