How can I fix my printer connectivity issue with 2 networks on my laptop?

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SUMMARY

The discussion centers on resolving printer connectivity issues on a laptop connected to two different networks: a wired test network (10.5.1.X) and a wireless main network (10.22.1.X). The primary problem arises because Windows cannot determine which network adapter to use for printing, leading to the need to unplug the Ethernet cable. A key insight is that having two routes to the same device violates IP standards, resulting in network confusion managed by spanning tree protocols. To fix this, users must adjust their network configurations to eliminate conflicting routes.

PREREQUISITES
  • Understanding of IP addressing and subnetting (e.g., 10.5.1.X, 10.22.1.X)
  • Familiarity with Windows network settings and configurations
  • Knowledge of spanning tree protocol and its implications on network routing
  • Basic troubleshooting skills for network connectivity issues
NEXT STEPS
  • Research how to configure Windows network adapter settings for multiple networks
  • Learn about spanning tree protocol and its role in network management
  • Explore methods to prioritize network adapters in Windows
  • Investigate network segmentation techniques to avoid route conflicts
USEFUL FOR

This discussion is beneficial for IT professionals, network administrators, and anyone troubleshooting printer connectivity issues in multi-network environments.

cpscdave
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Howdy everyone.
So here's the issue.
My work laptop spans 2 networks.
Wired its connected to my test network (that I control)
It is setup to be 10.5.1.X
Subnet 255.255.255.0
The router also connects into the main network so my various devices can download updates and what not.

My Laptop also connected Wirelessly to the main network (don't control)
10.22.1.X
255.255.255.0

The issue I have is Windows isn't smart enough to realize that a printer at 10.22.1.something should be talked to via the wireless adaptor, and anytime I want to print something I have to unplug the Ethernet cable to the main network.

Any ideas on how I can resolve this to not be a pain in the ass??
 
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I found this article where someone had gotten something simular to work on Windows 7:

http://www.sevenforums.com/network-sharing/220875-connecting-two-networks-simultaneously.html
 
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I have seen something similar when the private network (10.5.1.X) has a default gateway or dns set. If those are set you need to blank out the values.

BoB
 
cpscdave said:
Howdy everyone.
So here's the issue.
My work laptop spans 2 networks.
Wired its connected to my test network (that I control)
It is setup to be 10.5.1.X
Subnet 255.255.255.0
The router also connects into the main network so my various devices can download updates and what not.

My Laptop also connected Wirelessly to the main network (don't control)
10.22.1.X
255.255.255.0

The issue I have is Windows isn't smart enough to realize that a printer at 10.22.1.something should be talked to via the wireless adaptor, and anytime I want to print something I have to unplug the Ethernet cable to the main network.

Any ideas on how I can resolve this to not be a pain in the ass??
Well, you have defined two different routes to the printer (one wireless and one wired). Don't blame Windows for being confused, your setup is not according to IP standards. In short, two different routes to the same device is not allowed. If there is, something called a spanning tree is created, which means that one of the routes is kept and the other is blocked. This is not something Windows does, it happens "in the network".
 
I am having a hell of a time finding a good all-in-one inkjet printer. I must have gone through 5 Canon, 2 HP, one Brother, one Epson and two 4 X 6 photo printers in the last 7 yrs. all have all sort of problems. I don't even know where to start anymore. my price range is $180-$400, not exactly the cheapest ones. Mainly it's for my wife which is not exactly good in tech. most of the problem is the printers kept changing the way it operate. Must be from auto update. I cannot turn off the...

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