How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dave K Your Own Question

Dave K
Dave K, System Administrator
Category: Networking
Satisfied Customers: 3847
Experience:  Linux, Windows, and Oracle Adminstrator, I.T. Director
Type Your Networking Question Here...
Dave K is online now
A new question is answered every 9 seconds

How do I connect 2 networks/subnets together using a

Customer Question

How do I connect 2 networks/subnets together using a router? Can I use any router as the primary router that connects both networks together or do I need to use a special type of router? What configurations needed to be done?
Submitted: 8 years ago.
Category: Networking
Expert:  Dave K replied 8 years ago.

Hello. Yes, you can use any router to accomplish this - that is what a router is for; to connect two networks. You will just need to provide the "WAN" side of the router with an IP address on one network and have all nodes of the second network come into the router.

If the two networks are in the same location, you might consider simply modifying the subnet instead - for example, use 192.168.1.x for one network and 192.168.2.x for the other. Then you wouldn't necessarily need a router at all.

Expert:  Dave K replied 8 years ago.
I see that another expert is already working on this issue, so I am going to opt out. Please work with Flagbridge in your original question posting.
Customer: replied 8 years ago.
Reply to Dave K's Post: Ok, here is my situation. I have 2 subnets/networks, and Each network has its own router. So let's called the router with IP address of R1 and R2. What I did previously was I connected the WAN port of R2 to one of the switch ports of R1. Hosts from R2 were able to ping R1 but not hosts on R1. Also, hosts from R1 cannot ping R2 or hosts on R2. So I was thinking that it might need a third router to connect those 2 routers/networks together so that hosts on R1 can communicate with hosts on R2 and vice versa.

Let's called the third router, the primary router that will connect R1 and R2 together, as R3. What I did was I connected the WAN port of R1 and R2 to the switch ports of R3. Hosts from both R1 and R2 were able to ping R3 but R1 still cannot communicate with R2 and vice versa. What am I missing?

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

  • I am very happy with my very fast response. Eric is very knowledgeable in the subject area. Thank you! RP Austin, TX
< Previous | Next >
  • I am very happy with my very fast response. Eric is very knowledgeable in the subject area. Thank you! RP Austin, TX
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer New York
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY

Meet The Experts:

  • Claws224


    IEEE Network Engineer

    Satisfied Customers:

    IEEE, Microsoft
< Last | Next >
  • Claws224's Avatar


    IEEE Network Engineer

    Satisfied Customers:

    IEEE, Microsoft
  • Kevin's Avatar


    LAN/WAN Specialist

    Satisfied Customers:

    Certified MCSA and MCP Network Administrator with over 20 years of PC experience.
  • Eric K.'s Avatar

    Eric K.

    Network Administrator

    Satisfied Customers:

    13 years of desktop, server and network support experience
  • Mr. Clark's Avatar

    Mr. Clark

    Network Engineer

    Satisfied Customers:

    Computer Business Owner / Former DoD Network Specialist
  • Byron's Avatar


    PC Support Tech

    Satisfied Customers:

    CCNA, A+, MCSE 11 years at a large law firm.
  • Chris L.'s Avatar

    Chris L.

    Support Specialist

    Satisfied Customers:

    Certified Networking expert with over 10 years experience.
  • A. Stevens's Avatar

    A. Stevens

    Network Administrator

    Satisfied Customers:

    10+ years of Desktop, Laptop, and Server troubleshooting and support.