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#1
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Two computers can't access each other on network but a third computercan access both of them
I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt
firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? |
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#2
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Two computers can't access each other on network but a third computer can access both of them
On Thu, 25 Jun 2015 00:43:31 -0400, Bobbyville
wrote: I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? Address clash? -- Steve Hayes from Tshwane, South Africa Web: http://www.khanya.org.za/stevesig.htm Blog: http://khanya.wordpress.com E-mail - see web page, or parse: shayes at dunelm full stop org full stop uk |
#3
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Two computers can't access each other on network but a third computer can access both of them
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#4
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Two computers can't access each other on network but a thirdcomputer can access both of them
On 6/25/2015 12:43 AM, Bobbyville wrote:
I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? As said address clash could be a cause. However some times Windows 8 can be snooty, and some time discriminates against some computers by not acknowledging they exist. If by Communicate you mean share drives, determine the LAN address of the computer that will not talk. On the Windows 8 computer go to the Map Drives, and when it asked the location of the drive you wish to connect add the numeric address of that drive. (ie, 192.168.01) This is the only way I could get my windows 8.1 computers to find my hard wired print server. |
#5
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Two computers can't access each other on network but a thirdcomputer can access both of them
On 25/06/2015 05:43, Bobbyville wrote:
I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? Have you manually set the IP address for any of these computers - or are they all automatic via DHCP? What are the current IP addresses and subnet masks for each of your 3 computers? -- Cheers, Roger ____________ Please reply to Newsgroup. Whilst email address is valid, it is seldom checked. |
#6
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Two computers can't access each other on network but a third computer can access both of them
On Thu, 25 Jun 2015 08:38:15 -0400, Wolf K wrote:
On 2015-06-25 12:43 AM, Bobbyville wrote: I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? Set up a Homegroup/Workgroup network. I would try this even if I'd already set up a network prior to getting the new router. NB that each machine has automatically connected to the router, but that does not mean an automatic network setup. Routers do what their name states: they route traffic. It's up to the computer(s) to accept or reject that traffic. For some reason, two of the computers reject/ignore each other's share requests. Within the context of a LAN, routers don't route. They are only (mostly) a layer 2 switch with a DHCP server attached. |
#7
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Two computers can't access each other on network but a thirdcomputer can access both of them
On 06/25/2015 10:29 AM, Char Jackson wrote:
[snip] Within the context of a LAN, routers don't route. They are only (mostly) a layer 2 switch with a DHCP server attached. True. You're just using the switch, and maybe the WiFi access point. You use the router itself only when accessing devices OUTSIDE your network. That's usually internet. With some routers (at least with DD-WRT) is can be a local DNS server too. For example, I can access another computer by the name of: gary.lan instead of: 192.168.1.19 It also allows DNS redirection. Like a hosts file, but network-wide and even works with devices that don't have a hosts file. BTW, This is an important feature to me, so when I bought a new router a couple of days ago, I made sure it was supported by DD-WRT. -- Mark Lloyd http://notstupid.us/ "Well, why did the Puritans come to this country?" a teacher asked his history class. "To worship in their own way and to make other people do the same" was the reply." [Frank Zindler] |
#9
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Two computers can't access each other on network but a thirdcomputer can access both of them
On 6/25/2015 1:45 AM, Steve Hayes wrote:
On Thu, 25 Jun 2015 00:43:31 -0400, Bobbyville wrote: I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? Address clash? They appear to have different addresses. Media-center 192.168.1.117 and Desktop 192.168.1.104 |
#10
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Two computers can't access each other on network but a thirdcomputer can access both of them
On 6/25/2015 8:27 AM, Dave Doe wrote:
In article , , Bobbyville says... I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? Check they're all in the same workgroup (suggested name: WORKGROUP) Otherwise, I fear it's the famous Master Browser Election issue (which I don't think it is, because you can't ping the PC's). Also check in Control Panel, Network & Sharing Center, Advanced Sharing settings - that Network Discovery and File and printer sharing is turned on on all the PC's. Both computers claim they are in "WORKGROUP" File and printer sharing is turned on for all PC's |
#11
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Two computers can't access each other on network but a thirdcomputer can access both of them
Bobbyville wrote:
I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? Firewalls? (hardware, software) |
#12
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Two computers can't access each other on network but a thirdcomputer can access both of them
On 6/25/2015 12:43 AM, Bobbyville wrote:
I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? I've been experimenting and I've got some new information. I realized that both the computers that couldn't communicate with each other are both wired into the router. The Laptop (Lappy) was wireless and it can communicate fine with both computers. So I decided to turn off the wireless on Lappy and plug it into the router too. It then lost the ability to communicate with Desktop and media-center. I unplugged Lappy from the router and turned on the wifi again. Lappy could instantly communicate with Desktop and media-center again. So it appears to be an issue with the router. As mentioned above it is TP-Link TL-WR841ND v9 running Firmwa DD-WRT v24-sp2 (12/22/14) std |
#13
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Two computers can't access each other on network but a thirdcomputer can access both of them
On 6/26/2015 1:59 AM, Bobbyville wrote:
On 6/25/2015 12:43 AM, Bobbyville wrote: I recently got a new router (TP-Link TL-WR841ND v9) and installed dd-wrt firmware on it. Everything is working fine except two of the computers on the network can't communicate with each other but they can both communicate with other computers on the network. For example, I have 3 computers named Desktop, Lappy, and media-center. Media-center and Lappy are both running Windows 8.1, and Desktop is running Windows 7. Before I got the new router, all these computes could share files and remote desktop just fine with each other. Now Desktop and media-center can't communicate at all with each other (they can't ping each other, remote desktop, or share files) but Lappy can communicate with both of these computers just fine. Any ideas? I've been experimenting and I've got some new information. I realized that both the computers that couldn't communicate with each other are both wired into the router. The Laptop (Lappy) was wireless and it can communicate fine with both computers. So I decided to turn off the wireless on Lappy and plug it into the router too. It then lost the ability to communicate with Desktop and media-center. I unplugged Lappy from the router and turned on the wifi again. Lappy could instantly communicate with Desktop and media-center again. So it appears to be an issue with the router. As mentioned above it is TP-Link TL-WR841ND v9 running Firmwa DD-WRT v24-sp2 (12/22/14) std Okay, after some Googling, I fixed it! It appears to be some sort of bug with DD-WRT on some routers. Under the DD-WRT web interface, I went to the Administration tab, and then the Commands Tab. There I entered: swconfig dev eth0 set enable_vlan 1 swconfig dev eth0 set apply That fixed it! The only thing is I'm going to have to add that to some sort of startup script or I'll have to enter it everytime the router reboots (which isn't often anyway). Note: according to the forums, some people had to replace eth0 with eth1. Anyway, thanks for taking the time and giving me all the advice! |
#14
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Two computers can't access each other on network but a third computer can access both of them
On Fri, 26 Jun 2015 08:51:50 -0400, Wolf K wrote:
On 2015-06-26 2:28 AM, Bobbyville wrote: Okay, after some Googling, I fixed it! It appears to be some sort of bug with DD-WRT on some routers. Under the DD-WRT web interface, I went to the Administration tab, and then the Commands Tab. There I entered: swconfig dev eth0 set enable_vlan 1 swconfig dev eth0 set apply That fixed it! The only thing is I'm going to have to add that to some sort of startup script or I'll have to enter it everytime the router reboots (which isn't often anyway). Note: according to the forums, some people had to replace eth0 with eth1. Anyway, thanks for taking the time and giving me all the advice! Thanks for posting the solution. FFFR. I'll try to save others from Googling. FFFR probably means For Fast Future Reference or some variation of that. |
#15
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Two computers can't access each other on network but a third computer can access both of them
On Fri, 26 Jun 2015 11:45:47 -0400, Wolf K
wrote: On 2015-06-26 10:29 AM, Char Jackson wrote: On Fri, 26 Jun 2015 08:51:50 -0400, Wolf K wrote: On 2015-06-26 2:28 AM, Bobbyville wrote: Thanks for posting the solution. FFFR. I'll try to save others from Googling. FFFR probably means For Fast Future Reference or some variation of that. Typo, sorry. It shouda bin SFFR, Saved For Future Reference. No, it shouda bin "Saved For Future Reference." Abbreviations should always be avoided unless they are so commonly used that almost everyone understands them. |
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