Accessing Multiple Networks via hub and switch

Posted on 2008-09-30
Last Modified: 2010-05-19
I have a small network, with wired connections in 2 rooms.
- one is connected to a linksys EZXS55W switch
        this has 2 xp pc's hooked to it
- another is connected to an SMCFS5 switch
       this has 1 vista pc and multiple other devices

I can't ping the vista pc from the xp or the xp from the vista.

I want to be able to remote desktop the visa from the xp
Question by:leefar
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
  • 4
  • 3
  • 2
  • +1

Accepted Solution

tharstern earned 50 total points
ID: 22607056
Probably not to do with the switches, you can test this by moving the Vista pc to the other room temporarily and using the same switch to see if you can then ping to or from it to the xp pc's.

More likely to do with the firewall on Vista. Disable the firewall on the vista pc and see if that works (you can then add an exception after).

Check the ip addresses are in the same subnet for each pc

If it all works on the same switch, try again on separate switches. If it doesnt work on separate switches after working on the same switch try replacing the cable that links the two, or re-crimping the  connectors. Also try different ports on the switch. Some switches only allow uplinks on separate ports.


Author Comment

ID: 22607680
Here is some more info. shouldn't I be able to the vista pc from the xp?

xp info is
IP Address. . . . . . . . . . . . :
Subnet Mask . . . . . . . . . . . :
Default Gateway . . . . . . . . . :

vista is
 IPv4 Address. . . . . . . . . . . :
Subnet Mask . . . . . . . . . . . :
Default Gateway . . . . . . . . . :
LVL 12

Assisted Solution

Pugglewuggle earned 25 total points
ID: 22608392
That should all work fine. I recommend using static IPs because if you use DHCP the address might change and the RDP won't work.
Wait a second though... ARE YOUR PCS CONNECTED STRAIGHT TO THE INTERNET????? If so, FIX THIS IMMEDIATELY! Get a firewall or your computers will soon be toast and your info will be stolen!
Flexible connectivity for any environment

The KE6900 series can extend and deploy computers with high definition displays across multiple stations in a variety of applications that suit any environment. Expand computer use to stations across multiple rooms with dynamic access.

LVL 13

Expert Comment

ID: 22611981
pugglewuggle is right.

Get a router or firewall on that network as soon as you can.
LVL 12

Expert Comment

ID: 22612013
Indeed - having your PCs on the web with no firewall is a recipe for disaster.

Author Comment

ID: 22613011
there is a router between the pcs and the internet that is considered a firewall right?!?!?!

shouldn't I be able to see the xp from the vista pc to transfer files?
LVL 13

Assisted Solution

kdearing earned 50 total points
ID: 22613097
A router is not necessarily a firewall.
Your PCs have public IP addresses, not good.
If you are going to depend on the router, then you need to configure it for NAT.
In consumer-grade routers, this is typically called 'gateway' mode.
What type of router is it?

You're not going to be able to ping or RDP unless the windows firewall allows it.
Before you mess with the windows firewall, please fix your router issue, otherwise you are opening up your PCs wide open to the internet.
And that is just an invitation for bad things to happen.
LVL 13

Expert Comment

ID: 22613192
USA Today - "Unprotected PCs can be hijacked in minutes "

CERT® Coordination Center - "the average time-to-exploitation on some networks for an unprotected computer is measured in minutes"

CNET News - "Windows PC connected to the Internet will last for only about 20 minutes before it's compromised by malware, on average"

Author Comment

ID: 22613231
I have an SMCWGBR14-N, can that be used as a firewall?
LVL 13

Expert Comment

ID: 22613576
It has "NAT firewall with Stateful Packet Inspection (SPI)"

You may have it in 'bridge mode'
see page 21

Featured Post

Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Eset Smart Securties ARP poisoning attack 3 48
Network bogged down - slowing down some client PCs 10 39
Advice on router and switch 25 42
Citrix App 7 32
When it comes to security, there are always trade-offs between security and convenience/ease of administration. This article examines some of the main pros and cons of using key authentication vs password authentication for hosting an SFTP server.
In this article, I am going to show you how to simulate a multi-site Lab environment on a single Hyper-V host. I use this method successfully in my own lab to simulate three fully routed global AD Sites on a Windows 10 Hyper-V host.
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor ( If you're interested in additional methods for monitoring bandwidt…

749 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