Solved

Unreliable network bridge - Windows Server 2008 R2 Web Edition

Posted on 2011-03-11
3
1,685 Views
Last Modified: 2012-06-27
I have a server running Windows Server 2008 Web. The machine has two NICs, and I had them bridged. The bridge seems to more or less work fine, until I reboot the machine. After coming up from a reboot, the network bridge shows the machine with a 169 IP address on an unknown network. Attempting to renew the IP address fails with an unknown error. If I delete the bridge and recreate it, the new bridge will work fine once again until a reboot.

I deleted the bridge and rebooted the machine, and the individual NICs work fine.

Windows Firewall is disabled on the machine. It's currently just running inside my LAN. It's set to DHCP, with a DHCP reservation set with for the bridge's MAC address. Any ideas as to what causes this or how I can fix it?
0
Comment
Question by:elorc
  • 2
3 Comments
 
LVL 57

Accepted Solution

by:
giltjr earned 500 total points
ID: 35116922
First, are you sure you want to bridge these interface?  Bridging is used to connect two seperate networks together.

Typically people do not use a Windows box to bridge networks.  

They may team them so that to Windows it looks like there is 1 network interface with 1 IP address.  This allows for redundent connections to the network and provide extra bandwidth.

Which interface is connected to the network that has the DHCP server?

If you really want a bridge, normally you would configured it with a static IP address.

0
 
LVL 1

Author Closing Comment

by:elorc
ID: 35148514
I ended up just removing the bridge. It was being too weird and I decided it's not worth pursuing anymore. My understanding was that by bridging the NICs through Windows it would share the bandwidth. We've done this with a number of our Windows Server 2003 machines and never had an issue like this, so it is very strange.
0
 
LVL 57

Expert Comment

by:giltjr
ID: 35149863
Bridging will not allow you to share bandwidth, NIC bonding/teaming will allow that computer to use both NIC"s at the same time, which will increase the amount of bandwidth to/from that single computer.

If you understand a little bit about IP routing, a bridge is the same thing as a router, except a bridge works at layer 2 (Ethernet) instead of layer 3 (IP).

You can think of a bridge literally  like a real bridge.  That is you have two roads (networks in this case) that end on each side of a river and a bridge joins them together.  

NIC bonding/teaming is more like adding additional lanes to and existing road so it can carry more traffic.
0

Featured Post

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
How to fid Policy on particular IP Address 5 45
Cisco router external connection issues. 6 30
Time sync on Domain 5 36
NTP time source for DC 3 41
The recent Microsoft changes on update philosophy for Windows pre-10 and their impact on existing WSUS implementations.
When you try to share a printer , you may receive one of the following error messages. Error message when you use the Add Printer Wizard to share a printer: Windows could not share your printer. Operation could not be completed (Error 0x000006…
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders. Click on Start and then select Computer to view the available drives on the se…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

680 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