Testing UDP works over a VPN via console?

[whiteford]

From my Cisco 877 and 1841 with ADSL consoles, how can I test that a UDP port is able to reach a remote server over the VPN?

Is there a commadni can run?

[Richard Burts]

Andy

I am encouraged that some data has shown up on the NetFlow website.

I would suggest that it might not be a bad idea to start another thread on the forum asking if anyone has experience (or has suggestions) with running NetFlow over VPN.

HTH

Rick

[whiteford]

Will do, I'm not sure which interface to really monitor. I have an Ethernet cable from one of the four LAN ports on the back of the Cisco 837 into a 24 port switch. I have Ethernet 0 which assume is live a VLAN across the four ports being monitored. Not sure if it should be this or ATM 0 or dialer 1?

[whiteford]

Update:

I ran up an 1841 ADSL in a VPN mode, and had the same issues. So I installed the Netflow application onto a laptop on the side of the VPN, and it all instantly worked. So it must be a VPN issue.

Shame about this, are there other tools I could test. Then again I could install the free version (2 interfaces) on a PC at every site.

[Richard Burts]

Andy

Thanks for confirming your additional testing and it looks like it is a bug with NetFlow over VPN. I would hope that Cisco would address this and provide a fix but I have no idea how long we will wait to see this.

HTH

Rick

[whiteford]

That's true.

What a Cisco pro like you do to check who's doing what over a VPN when things go slow on the bandwidth? Just those console ip flow and cache export commands?