Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.
Solved
Dual Networks cards / connecting to seperate networks
Posted on 2011-03-04
I have a single pc with 2 ethernet cards (call then A & B). The computer is running Windows XP Pro. I have connected each ethernet card to a seperate network. Ethernet A is set to DHCP and Ethernet B has a static IP Address. Ethernet A get an DHCP address of: 1.1.0.206 (IP), 255.0.0.0 (SM), 1.1.0.1 (DG). Ethernet B is static is: 1.34.67.2 (IP), 255.0.0.0 (SM).
I can ping all deives on Ethernet A, but cannot ping anything on Ethernet B. There are only currenty two devices on B's network, both have 1.34.67.x ip addresses. On of the devices is a switch that has its default gateway set to itself.
Can anyone tell me what I am doing wrong here that I cannot communicate with the devices on B? Let me know if you need any other information? Sorry if I left any important information out I am kind of new this Dual networks cards and seperate networks.
I can ping all deives on Ethernet A, but cannot ping anything on Ethernet B. There are only currenty two devices on B's network, both have 1.34.67.x ip addresses. On of the devices is a switch that has its default gateway set to itself.
Can anyone tell me what I am doing wrong here that I cannot communicate with the devices on B? Let me know if you need any other information? Sorry if I left any important information out I am kind of new this Dual networks cards and seperate networks.
[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
Active 2 days ago
Since both NICS have a subnet mask of 255.0.0.0, they're on the same logical network. Change the subnet mask of one or both in order for your setup to work.
Active 3 days ago
Thanks thats worked. I hate to ask a dumb question, but can you explain why that worked? You don't have to go into great detail, I just want to better understand the solution
Active 3 days ago
Just to inform I chnaged the Subnet Mask on Network B to 255.255.0.0. I can now ping both networks.
Active 2 days ago
The subnet mask defines what portion of the IP address identifies the network and what portion of the IP address defines the computer.
Your subnet mask (255.0.0.0) masked both IP addresses to network 1.0.0.0 so traffic to either network probably just went out the preferred NIC (NIC A). Changing the subnet mask on NIC B (which is what I presume you did) pushed it to a different network number. What that network number is depends on what subnet mask you used.
Your subnet mask (255.0.0.0) masked both IP addresses to network 1.0.0.0 so traffic to either network probably just went out the preferred NIC (NIC A). Changing the subnet mask on NIC B (which is what I presume you did) pushed it to a different network number. What that network number is depends on what subnet mask you used.
Featured Post
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
Can I legally transfer my OEM version of Windows to another PC? (AKA - Can I put a new systemboard in my OEM PC?)
Few of us are both IT and legal experts but we all have our own views of Microsoft's licensing rules and how they apply. There are…
For both online and offline retail, the cross-channel business is the most recent pattern in the B2C trade space.
Two types of users will appreciate AOMEI Backupper Pro:
1 - Those with PCIe drives (and haven't found cloning software that works on them).
2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
Are you ready to place your question in front of subject-matter experts for more timely responses? With the release of Priority Question, Premium Members, Team Accounts and Qualified Experts can now identify the emergent level of their issue, signal…
Suggested Courses
Course of the Month8 days, 18 hours left to enroll
604 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.