2921 failed to connect to Router,but connected to concentrator successfully

Hi all
Recently I`ve found a extremely strange issue.
Here is the circumstance.
When 2921 connected to the LAN port of a Buffalo or TP-LINK router via a network cable,it both failed.(what i saw is the light of GB Ethernet is powered off.)
But when 2921 connected to the port of a TP-LINK concentrator(network hub),it worked well.
I have no idea about what`s wrong.
Does anyone have the similiar issue?I appreciate your help.
Leung

Hello,
Are those Buffalo and TP-LINK network switches gigabit compatible? What are the model numbers?
The USRP will not enable the network interface unless it detects a gigabit capable link.
Also, we have a dedicated forum for NI USRP devices.
Anthony F.
Product Marketing Engineer
National Instruments

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Active: inactive (dead)
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Dec 21 23:10:12 Defiant NetworkManager[341]: <warn> Activation (wlp3s0) failed for connection 'Bifröst'
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So I tried wpa_supplicant on its own:
$ sudo wpa_supplicant -B -i wlp3s0 -c <(wpa_passphrase "Bifr\xc3\xb6st" "mypassword")
Successfully initialized wpa_supplicant
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For good measure:
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0: tpacpi_bluetooth_sw: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether f0:de:f1:62:13:b8 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.11/24 brd 10.0.0.255 scope global enp0s25
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3: wlp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether 00:24:d7:c6:ab:48 brd ff:ff:ff:ff:ff:ff
I'm at a loss. and I've googled my little heart out. Any help would be appreciated.

Welcome to the forums - and thanks for a great initial post, all the needed information seems to be here.
Specifically, the following error from wpa_supplicant will most likely be best to dig into:
wlp3s0: failed to initialize driver interface
I see several results of this error in a google search, but none of them quickly translated into solutions yet. To get some more information on it, could you run the same wpa_supplicant command, but with the verbose debugging flag "-dd" and post the ouput here?
I don't have a intel wireless card, so I don't know what the diagnostic signs are for the problem addressed in the wiki, but you may want to try the modprobe options shown in this section of the wiki.
EDIT: there is a similar but unresolved thread on these forums here which points to using the -D flag for wpa_supplicant to specify other drivers. I was thinking this too upon my first reading, but I don't fully understand what these are so I was reluctant to suggest it. It certainly can't hurt anything to use the command in the wiki to see which drivers are available, then try each one.
EDIT 2: and this thread seems to indicate that the -D flag driver specification is the right solution. So start here with the -D flag and only if that fails follow up with my initial debugging suggestions.
Last edited by Trilby (2014-12-22 12:52:13)

Linked to router, but says not connected to INternet

Have got the 3g seeing the wifi router, but still no INternet access, which I know is working cos the laptop picks it up
AaaaarrrrrHhhhhhhh

There really isn't enough data to answer your question directly, but there are some things to check.
Being able to ping or serve data to the local network just means that the server has a working network connection, so that's a start, but to get to external sites it needs two things - first, a valid DNS server address that it can use to lookup hostnames, and it needs to know the address of the router on the network that provides an internet connection.
In this case you should check System Preferences -> Network -> Ethernet -> Advanced and check the TCP/IP settings - make sure the Router (or 'Gateway') address is set to the address of your Airport Extreme. Then check the DNS setting to make sure you have a valid DNS server set.
If those are correct then you'll need to post back with more data, specifically what you do see/get when you try to access remote sites. What error messages do you get?
Oh, and while ping might be a good basic test, it isn't absolute - in other words, ping could fail, even when you can connect to a remote server, since pings could be blocked by a firewall or router at either end of the network.

I connected my BEFW11S4 router but still can't access the internet.

I have a BEFW11S4 Linksys router and I have connected the right wires and everything and I still cant access the internet.. I go to network connections and i see that the connection i'am using says ' connected' so what gives? I load the browser and it says problem loading page.. can somebody assist me please??
Message Edited by EsTiLO on 02-02-2008 02:26 PM

I'm actually the 15-year-old son of the person this account is signed up for (he's making me fix it because he has other things to do), but anyway, I'm experiencing the same problem, but I will go into a bit more detail than Estilo to verify it is the same and hopefully get a bit more help:
My dad's computer can connect straight to the modem (MSN Arescom NetDSL 800) and run the internet just fine, but only his computer; I've tried plugging my Xbox 360 directly into the modem, and it cannot connect because the ISP knows that it's not my dad's computer...?
But the internet will not run through the router to any computers connected to it. My dad's computer is even wired to the router, and still no internet. We've found that it's an IP issue, and trying to change that doesn't work as it give us a "169" IP (a "router is there, but I can't communicate with it" IP address) whenever we try to fix anything, rather than the "192.168.1.1" or ".2" that we should have.
My dad thinks (and I'm not entirely sure he's correctly, but I mostly agree with him) that the computer is the actual central hub for the internet, as in that it runs the administrative settings and makes the internet actually work for the rest of the computers (if his computer isn't on, no other computer can connect to the internet); the router is basically just a splitter.
The thing is, though, that this problem started randomly about 2 weeks ago as my dad was just looking up some things on craigslist.com; that was the point when the IP addresses changed completely for an undiscernable reason. And 2 weeks ago, my computer was able to connect to the router wirelessly and access the administrative settings. My cousin (who works in this stuff) recommended that I see what I can do to fix the problem by editing the administrative settings from my computer, but now I cannot connect to the router whatsoever.
My dad and I have narrowed it down to a driver problem, and I'm not sure what to do about it. The reason for this is we tried getting a new router (the WRT54G), and the same connection issue remained. If this is the problem, you know what the problem really is, or you have questions, let both me and Estilo know.
Simplified Outline:
+ comp to modem (MSN Arescom NetDSL 800) [working]
+ comp to router (BEFW11S4) [failed]
+ comp to new router (WRT54G) [failed]
+ router to internet [failed] (incorrect IP to connect to ISP)
+ not a router problem
? driver problem
? designated computer needed as central hub
- wireless connection to router was recognized (no longer works?)
Message Edited by guitarfood on 02-03-2008 03:23 PM

OSX Server connects to router but dos not reach the internet

Sorry that i have no answer, but i'd like to add my problem as well.
I have a OSX Server witch is configured to an Airport Extreme. It is connected to the Router and dos all the sharing on the local network. But same as you describe it dos not connect to the Internet.
I checked my firewall options and it is set to allow all traffic.
I can ping the router but i don't get pings from pages on www !?
If anyone has an Idea where else i might look, i would be grateful for all advice..
Please drop me a mail on tj{at}daemgen.net
If anyone has a solution to the problem i will send an coupon for an Starbucks coffee in addition to my appreciation and thanks as i am looking since quite a while by now and it doesn't seem that i see what might cause the problem !!

There really isn't enough data to answer your question directly, but there are some things to check.
Being able to ping or serve data to the local network just means that the server has a working network connection, so that's a start, but to get to external sites it needs two things - first, a valid DNS server address that it can use to lookup hostnames, and it needs to know the address of the router on the network that provides an internet connection.
In this case you should check System Preferences -> Network -> Ethernet -> Advanced and check the TCP/IP settings - make sure the Router (or 'Gateway') address is set to the address of your Airport Extreme. Then check the DNS setting to make sure you have a valid DNS server set.
If those are correct then you'll need to post back with more data, specifically what you do see/get when you try to access remote sites. What error messages do you get?
Oh, and while ping might be a good basic test, it isn't absolute - in other words, ping could fail, even when you can connect to a remote server, since pings could be blocked by a firewall or router at either end of the network.

I have an epson xp600 and a mac book pro. Wireless printing is OK if I'm lucky for one time only then a 'failed to connect' message so I have to delete and re add the printer to get it working again (but just once!) then the same occurs. Why?

I have an epson xp600 and a mac book pro. Wireless printing is OK if I'm lucky for one time only then a 'failed to connect' message so I have to delete and re add the printer to get it working again (but just once!) then the same occurs. Why?

I am not certain this will fix your problem but I suggest you assign the printer a static IP address.
Using the printer's front panel, select Menu > Network > WLAN > TCP/IP > Boot method, and change it to "static". Provide a static IP address that is on your LAN's subnet.
For example, if you are using an AirPort Extreme, you might give it an IP address of 10.0.1.100. If you are using a Netgear or Linksys router that defaults to issuing 192.168.x.x addresses, you might give it an address of 192.168.1.100. That way, the printer will always "reside at the same address" on your network. If your router has the ability, you should reserve that address so that the router does not attempt to assign it to another DHCP device.
Then, go to System Preferences > Print & Scan, and delete your existing printer with the "–" (minus) button. Add it again, using the "+" (plus) button. In the window that appears, select the IP pane, and from the Protocol menu select "Line Printer Daemon (LPD)". In the Address field type the IP address you gave your printer.
If all goes well the "Pring Using" field will detect the printer at that address and automatically select the appropriate driver. You will see something similar to the following screenshot ("name" can be whatever you decide, and "location" is optional):
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Ipad will not connect to my air extreme router but my IMac&air mac will

Ipad will not connect to my air extreme router but my IMac&air mac will

The router is much, much newer than the computer, perhaps some characteristic of the WiFi network as it's currently setup is preventing the computer from connecting.
Try to go back to the basics: set your WiFi network to "b" mode only (i.e., turn off "g") and termporarily remove the password from it. See if the computer will at least establish a connection at that point. Then start turning on one thing at a time ("g" mode, then security, etc).
Not sure what format your WEP key is, but if it's not 10 characters (the minimum for the standard, which constitutes a 64-bit key), you can try making it that long. If it's 13 or 26 characters, it might be a higher encryption than the computer can support.
If all else fails, you could try looking on ebay/craigslist for a copy of Tiger to install on the iMac, which would have software support for more WiFi encryption schemes. Also, it would provide software support for USB WiFi adapters that would also be able to connect to more modern networks.

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I recently bought a D-Link wireless router (320), which supports wireless printing and I am trying to set it up to work with MBP. I set it up to run with Windows XP and it works fine with no problems, but with my MBP it won't work. Here is a screen shot showing the XP set up and the printer server info from the router (bottom).
http://img338.imageshack.us/img338/1645/printerq.jpg
From this, I've been using the following information to add the printer,
Protocol: HP Jetdirect - Socket
Address: 192.168.0.1
Queue: lp1
The printer shows up as idle in the printer selection menu. When I print it goes through the following messages,
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Any help would be appreciated with this, as I've read several posts and tried all recommendations but nothing will work. I'm also curious if I have the "Queue" in the printer dialogue right, or if it should be 9100. Thanks in advance!

Based on your Windows port configuration, your Mac printer queue configuration is reasonably correct. Although based on your Windows port configuration, you don't seem to require a queue name of lp1 - this would normally be required for LPD connections.
Your issue will be with the driver used. The Canon Mac drivers cannot be used when you have the printer connected to the USB port of a wireless router or print server (although the exception to this rule is an Airport device). When you have the printer connected via USB to a router or being shared by Windows, then you need to use a CUPS-based driver like Gutenprint or PrintFab (yes I know the Canon driver says CUPS but it is not true CUPS).
The Gutenprint tends to be the preferred driver because it is free, however your MX310 is not listed as a supported model so you would have to experiment with using a model that is supported and this can waste a lot of time and ink/paper.
PrintFab (www.printfab.net) costs 49 Euro but it does support your MX310. A trial version is also available so you could see if the printer does work before making a purchase.
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I was searching, but couldn't find a thread with my symptoms...please redirect me if needed.
however, I just got a brand new dell that is running vista premium, and I put my belkin wireless card that I was using in my old pc into the new one. found my network, applied to wep key and connected to the router without any problem...
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It sounds like your laptop doesn't have any - or the right - IP configuration. When you went through the network setup, did you tell it to use DHCP?
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Connected to router but cannot get on the internet

Hi,
I have connected my sons laptop to home hub 3 and it is showing connected to router but when we try to connect toonternet we get error message,have tried connecting to lots of different web pages without any joy.
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Can anyone help?
Thanks

Couple of things to check:
1) Are you using the wireless passkey that is on the Homehub label to log on with?
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Select Start
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In the new window right click on your wireless network connection and select properties
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2921 failed to connect to Router,but connected to concentrator successfully

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