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Level 1 Broadcast Hub to Monitor outgoing ping

Posted on 2006-06-21
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Last Modified: 2010-04-12
I am working with Tech Support to try and establish if and outgoing ping is being sent out of my VPN device to establish a connection.  The Tech Support Gentlemen suggested attaching a Level 1 Broadcast Hub and a Laptop to the outbound port to monitor the ping.  Does anyone know what a Level 1 Broadcast hub is and can you recommend one or another solution to check for an outgong ping.

Thanks!
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Question by:dupont2406
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Expert Comment

by:Rob Williams
ID: 16953536
I suspect he meant a class 1 hub which is an old hub, as opposed to a switch, which will broadcast/send all traffic to each port on the hub. Newer switches are more efficient and send traffic only to the destination port. The hub allows you to connect a PC or hardware device, with the appropriate software, to "listen" to all traffic passing through the unit.

Perhaps we can better help with the specifics of your VPN problem if you would like to outline them.
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Author Comment

by:dupont2406
ID: 16956247
This is a VPN Managed by AT&T it is a Cisco 1700 Router.  From what I understand the Cisco 1700 router sends a ping out to the other VPN device to establish a connection.  AT&T says they do not see any ping coming from our location.  The Cisco 1700 is behind a Pix firewall.  All default config, just the inside and outside IP addresses.  AT&T will not offer any support or replace the unit unless we can show it is not sending the ping.  To be honest I think the firewall is blocking it.  

Yes the Tech support did ask if I has an "old" hub around so Thank you for the answer.  

If you can offer any sugestions from my description I would appreciate it.

Thank you again!
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Rob Williams earned 2000 total points
ID: 16956643
Not so sure it would be an actual ping, but it does send a request. The PIX could block it, but the default on most firewalls is to allow all outgoing traffic. The PIX has quite extensive logging capabilities, which you might be able to use to monitor this, rather than having to set up a hub and monitoring software. I am not a "Cisco Guy" and as a result not much help with that. You might want to post a specific question, or pointer question in the routers forum where there are numerous very qualified Cisco experts who may be able to help you to correctly  configure logging on the PIX.
http://www.experts-exchange.com/Hardware/Routers/ 
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by:Rob Williams
ID: 16956785
Thanks dupont2406,
--Rob
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