Linksys Wired Router :: BEFSR81 / Add Device Names To DHCP Device Table?
Nov 30, 2011
My BEFSR81 is my primary router and has DHCP turned on. The router's DHCP range is set to accommodate 12 devices. I have three computers wired to it and their Host names (as specified in the set-up of each computer) show up in the router's DHCP device table. I also have two printers (one old Brother HL5250DN laser printer and one new HP Photosmart Premier C410a inkjet printer) connected and there are blanks where the Host name should go. I would like to be able to tell which printer is which when I am looking at the DHCP device table. How can I get a names associated with each printer's IP address in the router's DHCP device table? (The real problem is that the router seems to have both printers at the same IP address (192.168.1.100) and if I can get one of them to change I'd like to know which one it was!)
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Jan 10, 2011
I upgraded to firmware version 1.0.03 I started to have this weird issue: I have four PCs connected to this wireless router via wireless G. They all run Windows 7 Home Premium. After a few hours I started to notice that the DHCP client table is empty even if all four PCs are connected to the internet. This causes a networking problem because one of the PC serves as a file server and it grants access by IP addresses. Not being able to "see" those computers, my access is denied.
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Jan 31, 2011
Most devices pass a client name to DHCP when requesting an IP, but some like my smartphone, do not. When a device does not pass a client name garbage is entered as the name of the client name.The first is that when you use the Web Admin pages, and select Status/Local Network/DHCP Clients, the table will not display any clients because there is an error on the page. If you right click and View Source from the browser, you will see all the client entries are there and one of them will have garbage (unprintable characters) for the client name.The second and more serious issue is that the internal DHCP table once corrupt is unstable. I've had my BEFSR41 reboot because of the corruption and then I get IP conflicts on my LAN because the DHCP starts handing out in-use IPs.I'm on hardware version 4.3 and the latest firmware Ver.2.00.4 Build 8 (which is very difficult to install without bricking the router). BTW, when I use a WRT54GL router with the smartphone, it is properly handled by the DHCP and shows a blank client name, not garbage.
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Jun 22, 2011
I have enabled DHCP but want to set static table IP's for my security camera DVR and one computer, the others can remain dynamic. I know in other routers I can attach a LAN IP to a mac address to keep it static but I can't see where I can do that with this router.
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Oct 14, 2012
On my old Linksys WRT54GL router (with its latest stock firmware)'s http://192.168.1.1/DHCPTable.asp for DHCP Active IP Table, it only shows wireless connections. How come it doesn't show wired ones?
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Mar 14, 2008
Just purchased a RVS4000. How to be successfully able to VPN into this device from os/x? If so what software / settings required.
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Apr 11, 2012
I have a WAP54G in my basement shop, wired to our main router upstairs, which is a Linksys BEFSR81. I'm not sure if this is an issue with the WAP or the router.
I only use the laptop computer in the shop every couple of days, but I leave the laptop plugged in and on most of the time. I used to have the power settings such that it didn't power down completely even after a long time. With that setup, if i didn't use the computer for several days, it would find that the connection to the router had died. The wireless link would report that it had a solid connection, but I couldn't connect to anything. Power cycling the WAP always fixed this.
Recently, I decided to save some wear & tear on the laptop drive, and adjusted the power settings to go to standby after a couple of hours. Now, it seems I can't even go one day without losing my connection.
I am running the latest frimware in the WAP, and the router is version 3.1. I can't check the firmware version on the router at the moment, because the web interface is giving me a blank screen. I know from past experience that I will have to power cycle it to get it to talk to me again.
In any event, it seems like the router connection to the WAP is timing out. I set the router "client lease time" up to 10000 a while back when I first had this problem, but that is clearly not doing the trick.
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May 2, 2013
I have the WRT400N router with the latest firmware. Recently I have noticed a device in my DHCP that I do not recognize. It is not device I own (believe me, I have racked my brain and confirmed) as it shows as an Acer pc. I cannot ping the IP address however. I have rebooted my router several times thinking maybe it's a former connected device but saved in memory but it keeps coming back. I am thinking possibly it is someone hi-jacking my Internet, but not sure. I am using WEP security but it shows a LAN connection which is strange for a wireless device. The only hard wired pc is my HP.
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Dec 6, 2011
In asus router model rt-n10, there is a client list when you bring up 192.168.1.1 showing names of devices also mac addresses and ip addresses. How do I add names to the list so I know which devices are using what ip etc. I have tried the advanced settings in the router to see if I can do it this way , but no luck.
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Dec 30, 2011
I got a brand new wireless router and made it the first in line with my cable modem. This is necessary because I want to take advantage of all the features in the new router. I put the RTP300 behind the first router and switched off DHCP and connected the internet port into one of the 4 regular ports on the back (typical configuration for a pass through router).So everything works perfectly for any computer attached to the router (they can access the internet etc). The only problem I have is the VOIP doesn't work. If I pick up my phone it says this device is not registered to a phone number.
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Jan 15, 2012
In the next month or so I plan to replace my old desktop PC. It is currently connected to a Linsys E3200 wireless router. I have many other wireless devices also running off the E3200, but my PC is the only wired device connected to it. When I replace the wired PC do I simply switch the new one in with the existing ethernet connection (I'm sure it is not that simple) or do I have to start over again recreating my entire network..security etc.. ? If so what is the process to start over ? Do I have to reset something on the router, reload cisco connect, create a new network name?
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Sep 27, 2011
Anyway, I am looking for a way to discover host names of Apple devices (namely iPods and iPhones) that are on our network. I've tried a number of programs like Nmap, Advanced IP Scanner, and LanSpy to name a few. All of them will report back the MAC address with no problem but no dice on resolving the host name.
My goal is to use the host name to identify the device, and ultimately the person with the device. Any thoughts on how I can go about this? Is there a setting in Nmap I'm missing or perhaps a better program to use?
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Jun 18, 2011
My router was not functioning well so I decided it might be a good idea to reinstall the driver package via the admin upgrade page. Since then it doesn't work at all. The power light flashes constantly now.
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Sep 15, 2011
I can connect to the router and connect to the Internet by by-passing the router, but can't connect through the router. firmware 2.51.4 is up to date, cables are all good. I can't find any diagnostic tools in the management screens - are there?
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Apr 8, 2012
Problem (1)I was told that having two (2) gaming systems on the BEFSR81 router will cause both xbox machines to loose connections. My kids demonstrated this lockup with the Xbox. I think its because the Xbox connection is seeing 1 IP address for both game machines. Question is there a way to fix this without getting two DSL modems with two different IP addresses ?
Problem (1)My router BEFSR81 locks up at least once every 3 days and then randomly also. We reset it is by unplugging the power to the router and it reboots and returns to normal. I also notice that the router is quite hot on the top, so I put a small quiet fan on top and the router now works longer before it locks up. (All green lights flash together or all on solid). So I thought gaming machines might be the reason for the lockup, we disconnected the xbox(s) and the router still locks up on occasion. I have read the other forum and found that Amazon could be a problem since I have been logging, I turned logging off but I still have the same lockup....Is my router dying a slow death...
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Dec 12, 2006
I just buy the BEFSR81,still not working.
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Feb 27, 2011
I try to make changes or save changes from the web page on my BEFSR81 nothing changes and everything revert back to the original setting made a long time ago. cancel changes works fine as the page reloads, but save changes won't make it save or reload the page with saved settings. i updated java and used 3 different browser and always get that error.
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Mar 14, 2009
I'm trying to upgrade the firmware on my BEFSR81 v3 cable router (firmware version 2.45.xxx) on a Mac. I accessed the interface via Safari browser, followed the instructions, got a message saying not to interrupt the process, but it never completed. So I tried it again (downloaded another copy of the firmware update), and same thing. No choice but to interrupt it. My internet connection seems to be working fine, but now I can't access the router via the browser. I don't think the firmware actually updated.
Should I power down the router and then reset it?
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Nov 4, 2011
i successfully configured my befsr81 router hardware version 3.1 with a dyndns hostname account. how often is it supposed to update? it doesnt seem to update till i login to the router through my browser. where is successfully updates. is there a way to choose how often it updates?
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Sep 13, 2011
I currently have a LinkSys BEFSR81 connected to my cable modem as I need at least 6 wired ports for my house network. I also have a WRT54GS that is currently unused, but I would like to add it to the network so I can have some wireless connectivity as well.
Assuming that it's possible, what's the best way to combine these two units into the same network? Can the WRT54GS simply be connected downstream from the BEFSR81 via one of the open ports? I'm assuming that I'll have to change the IP address on the wireless unit to make it individually accessible for configuration, status checking, etc.
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Feb 20, 2011
I recently updated the firmware on my BEFSR81 v3.1 but would now like to revert to the previous version.
Where I can find the earlier version? I've got 2.51.4, build 006 Aug 21 2009 and need the one before.
It's not a critical problem, but more of an annoyance. I power everything here off one big switch which goes off overnight. Before the update I'd just switch it all on in the morning and everything would, after a minute or so, work fine. Now, however, I have to power up the router a minute after the modem or it just sits there doing nothing. That's OK when I'm here, but if it's just the wife she can't reach the back to do it.
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Nov 6, 2011
I want to use my old BEFSR81 as a switch only and for whatever reason it doesn't seem to allow me to do that.I've disabled DCHP but I don't see a way to disable the router. Is there some trick into using this router as a switch?
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Jan 28, 2010
BEFSR81 v3.1 Current firmware 2.51.4 build 600 (09-4-2009)The Web Admin pages become dysfunctional after the router has been up 3-4 days displaying only a blank white page. Viewing the page source shows that the HTML is incomplete.I am not sure of the exact firmware version where this problem originates, I noticed it after flashing to 2.51.4 build 400 but cannot remember which version was running before the update. Just flashed to 2.51.4 build 600 last week hoping the new version had corrected the problem. Still broken.The router remains completely functional but the Web interface does not work correctly after 3-4 days.I have tried re-flashing the firmware and have gone as far as resetting the router both before and after the flash, even tried 30/30/30 resets but the problem with the Web interface remains.Re-booting the router every 3 days is not the best “solution” as my network is running DHCP. I would rather not fall back to older firmware as ver 2.51.4 build 400 corrected the DHCP errors on my Windows machines and decreased the initial connection time when machines boot up. I have read in this and other forums where others are having the same problem with this router/firmware but have been unable to find a working solution which leads me to believe the actual problem resides in the later firmware builds.
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Mar 7, 2011
When I am connected directly to my Surfboard modem I get 3000kbps upload with wired connection.
With the BEFSR81Router conected I get 1000kbps.
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Jan 22, 2011
My router is a Linksys BEFSR81.Recently I installed a proxy server and now I would like to setup my router so that only the proxyserver (HTTP traffic) can connect to the Internet.
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Jun 2, 2012
From what I understand, it requires a 5V 2.5A adapter ... alas, cannot find one.
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Mar 2, 2011
My BEFSR81 router has never been a problem for over 10 years.All of a sudden I can not connect to the internet..I only use the router for connecting 2 PCs to the internet modem. I have not changed any configuration. tried my IPS COX recommendation to disconnect the power for about 1 minute then try again with no luck. CoX said they tried pinging my router but could not get a reading. While waiting for them to come up with a solution, I hooked one of my PCs directly to the modem. It worked. So I tried it with the other PC. But it didn't work right away. It kept trying to dial up for a connection. I finally got the WIZARD to get it configured correctly. I assume it must be a router problem because either one of my PCs can get an internet connection when hooked to the modem. I did not pusue any further with COX, THEIR AUTOMATED TROUBLE SHOOTER WAS GETTING ON MY NERVES.Should I take the time to resolve the issue with the router or buy a new or refurbished router? If the task isn't too complicatged, I am willing to try and fix it.
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May 17, 2011
BEFSR81 will not save port forward info. I am trying to setup port forwarding for xbox (53, 80, 88, 1863, 3074), I click on enable to the far right and then click save at the bottom. It says settings are succeful, will return in 5 seconds. When it returns everything is zeroed out.
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May 9, 2010
I am experiencing loss of internet access when browsing to amazon.com. In addition to losing internet access, I am unable to connect to my BEFSR81 router when this happens. To resolve I have to walk over to my router and reset it by cycling the power.
This issue has been reported by other users of the BEFSR81 too: URL
Details: My BEFSR81 is version 3.0 and is running firmware version 2.51.4
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Jan 5, 2012
I have the Linksys BEFSR V2 router and at least once a day some or one of the ports become inactive and have to unplug the router and plug it back in to reset. I have ungraded to the latest firmware but this is still happening on a daily basis.
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Apr 19, 2009
BEFSR81 v3.0.I selecting Enabled UPnP and now I cannot access the router. When I enter the default admin for the password in the Authentication Required screen. I get the following screen: 401 Authorization RequiredThis server could not verify that you are authorized to access. Either you supplied the wrong credentials(e.g., bad password), or your browser doesn't understand how to supply the credentials required.I didn't enter anything new into the username or password fields.
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May 29, 2013
I am currently running WCS 7.0.230 I have controllers that are 2500 that are running 7.4.100.60?
My problem is that when I try to add my controller that is a Cisco 5500 running the same 7.4.100.60 I am getting the error SNMP operation to Device failed: Sparse table not supported. Verify that the WCS and WLC versions are compatible and try again.
I have double checked SNMP strings, IP Addressing and everything else I can think of. It just doesn't make sense that I can add a Controller with the same image but different hardware and no the other to the WCS server.
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Jan 2, 2012
I have the BEFSR81 V2 and every day at least one of the ports become inactive and the router has to be unplugged and plugged back in to reset the ports. I was going to upgrade the firmware from version 2.44.2 to the one on the site 2.45.10 but when it is downloading I get a message at the end upgrade file pattern error. There is a problem with the router that the ports go out or will the firmware update hopefully correct that issue and how to I get the firmware to update
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