Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Dual Port Nic with Failover Bypass

Posted on 2008-06-25
5
Medium Priority
?
534 Views
Last Modified: 2013-11-09
Hi,

I'm setting up a PC to do in-line packet sniffing on the network to monitor outbound bandwidth on the WAN link. The machine works fine as is; an XP box with 2 nics bridged (i.e. an IN and OUT port) and I can sniff all the traffic on it's way to the firewall to monitor bandwidth.

The problem is that when the PC is off or rebooting the XP software bridge isn't active so everyone looses internet connectivity. What I need is a dual port NIC that will failover to a bypass/bridge when there's no power (or better still no OS).

Preferably cheap and PCI, but could manage with PCI-X at a push.

Many thanks!
R.
0
Comment
Question by:chief007
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 2

Accepted Solution

by:
pierky earned 2000 total points
ID: 21863817
Umh... I don't know about hardware like the one you said, but I'm thinking about another kind of solution for you needs.

For example, you could connect firewall, LAN and "bandwidth-monitor" to a switch and then enable the "monitor" function on the switch port where the monitor is connected (see Cisco SPAN feature - http://www.cisco.com/warp/public/473/41.html#intro).

If you don't have a switch that supports the monitor feature you could replace it with a simple Hub: all the traffic will be forwarded to all the ports on the hub, so you can setup the monitor to sniff the traffic.

Be aware that if you have lot of traffic network performances may drop.
0
 

Author Comment

by:chief007
ID: 21863883
the WAN link is 10Mb so a 100Mb hub should be able to cope...I'll give that a try and let you know. :)
0
 

Author Comment

by:chief007
ID: 21864045
That seems to work for monitoring....but it's not going to work for traffic shaping.

pierky - Thanks I'll chuck you some points in a bit but I'd like to leave things open to see if anyone can find that sneaky nic card.
0
 
LVL 2

Expert Comment

by:pierky
ID: 21864101
Oh yes, of course... You did not talk about traffic shaping in the original post, so I posted my comment! :-)
0
 

Author Closing Comment

by:chief007
ID: 31470481
Simple is best. Cheers!
0

Featured Post

Will your db performance match your db growth?

In Percona’s white paper “Performance at Scale: Keeping Your Database on Its Toes,” we take a high-level approach to what you need to think about when planning for database scalability.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Hello All, I have been training on Multicast for a while now and whenever I start the topic , I find out that my friends /  Colleagues mention that they do not know how to test Multicast Joins. As most of the multicast would be video traffic and …
Hi there, This article summarizes what you need if you are going to set up your home or small business Network Attached Storage (NAS) to be accessible from the internet. Of course there are configuration differences based on your NAS or router ma…
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question