WRT54G V6 DHCP Problem

I have a WRT54G V6
I am use WPA 2 with AES
and useing MAC Filering
i have 1.02.2 7/02/2007 Firmware for the WRT54G V6
- i think it may be the Firmware

The firmware is the most current one on the site. There are no other options than that. Anyway what kind of DHCP problem are you having? Is your laptop getting "limited or no connectivity" when you try to connect wirelessly to the network?
Don't use AES. Most cards are only compatible with TKIP.
What kind of Wireless MAC Filter are you using "Prevent" or "Permit Only"

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WRT54G (v5) DHCP problem (MAC, APPLE, MAC OS) -- How to fix it

Ok, so I just got some instructions from Linksys support and apparently definitely got rid of the DHCP problem. Here they are:
Please reset the router before and after the upgrade.
To reset the router (make sure that the modem is disconnected when doing a reset):
1. Locate the reset button of the router at the back panel.
2. Hold the reset button for 30 seconds using a pen or a paper clip.
3. Release the reset button and unplug the power adapter of the router.
4. Leave the router off for 30 seconds then plug it back in.
Click the link below to download and save the firmware:
http://www.linksys.com/servlet/Satellite?c=LDownloadC2&childpagename=US%2FLayout&cid=1115417109974&packedargs=sku%3D1127782957298&pa gename=Linksys%2FCommon%2FVisitorWrapper
To do a firmware upgrade, you can follow the steps listed on this link:
http://linksys.custhelp.com/cgi-bin/linksys.cfg/php/enduser/stdadp.php?pfaqid=557
Reset the router again after the firmware upgrade. You can then reconfigure it for Internet and wireless connection.

Hi, Malcolm:
Thanks for the post.
No, my new Mac Pro system does not have USB port on the Keyboard, cause I've opted for Apple's wireless blue tooth mouse and keyboard.
I do have 2 USB ports on the Apple's 23" LCD display, and Two USB ports on front side and two available USB ports on the back of the Mac itself.
During the Thanksgiving long weekend, I think I might accidentally singled out the cause of my problem.
I have my HP printer and one multi-card reader constantly pluged into the two USB ports at the back of my Mac, and always tried to use the front side USB ports for the 1GB USB Pen Drives, and that's where the problem lays!
When I unplug the Multi Card Reader from the back USB port, and suddenly all USB ports on my Mac works just fine with the Pen Drives!!!
So, for now, I plug the Multi Card Reader in one the the front USB port, and the rest of the USB ports on the Mac work with Pen Drives flawlessly, it seems that I sloved my problem for the time being...
As for those two USB ports on the back of my 23" Apple Display, They can not take my USB Pen Drives, as you've mentioned that it does not have enough power for the USB Pen Drives.
K C
Mac Pro 2x3GHz Dual-Core Xeon, Power Mac G4 dual 1G MDD, 5G iPod 60G Mac OS X (10.4.8)

WRT54g router DHCP problems (I think)

I just got a wrt54g wireless router for my organization hooked it up and started having problems. I set the router to use DHCP and *tried* to set the “Maximum Number of DHCP Users:” to 15 and clicked “Save Settings” but when I went back to that screen it would be back at the default (5), I have since tried to change it many more times and no matter what number I pick (2-230) it still shows up as 5. Anyway. 1st I connected my XP notebook and was able to access the internet (specifying that my computer obtain the IP address automatically) Next I connected my colleague’s vista notebook and he could access the internet. (specifying that his computer obtain the IP address automatically) Next I connected another colleague’s xp desktop (specifying that my computer obtain the IP address automatically) *Next* I tried another colleague’s XP notebook computer and started having problems. I specified that it should obtain the IP address automatically but it would not and kept getting a 169.254.x.x address instead of one like 192.168.1.x (it also keeps showing a subnet mask different from the one I specified on the router). I went back to my notebook (which had been working fine) and discovered that now (without my making any changes to my notebook) I am having the same problem. I am now having the above problem (computers not receiving addresses automatically) with all but one or two computers (the vista notebook continues to work). Someone on usenet suggested I try putting in an IP address manually so I did and it worked but #1 I need more than 5 computers to be attached at one time (the router refuses to accept any number higher than 5 [though I can specify *less* than 5, it will for example remember 4 and 3]) #2 The router should be assigning IP addresses to all the computers, I shouldn’t have to be putting in the addresses manually.

Did you try to flash/reflash the routers firmware? Try that and reset the factory default settings and cycle the power. Then reconfigure the router and let us know if it continues to do that.
Richard Aichner (Ikester)

How to resolve DHCP problem in Oracle for Cent OS

Hi everyone,
I want to install Oracle 10g on my new linux os CentOS. At very first step of system check, it warns me about having DHCP enabled and to use some static IP insted.
I have already done loads of installation on my windows box so I know how to deal with DHCP by using Microsoft Loopback Adapter.
But I dont know if there is any Loopback adapter available for Linux ? I have tried already to google but it seems that its really difficult to find the correct installation methods because most of "How tos" just ignore the fact that , web interface of EM won't work well with DHCP ( as far as i know :D ).
So, is there any work around for this DHCP problem ? I mean linux version of microsoft loopback adapter !!! ... Also do I need to say that , its my laptop and I use it on various networks including starbucks and DD ;) ... so I guess , I can't go for configuring static ip for my physical card. my knowledge for linux is a bit primitive so it will be really appreciated if you can provide me step by step instructions.
BTW, regardless of warning i have installed Oracle 10g, and as i had expected .... Web Interface of EM gave me an age old error ( web page not found ) when I restarted my laptop... which is because of DHCP.
Thanks in advance for any help
Peace,
Jack

Thank you guys for your advice. I really appreciate it.
But this does not solve my problem. I dont know weather you guys know or not , CentOS is EXACTLY same as RHEL other then "support" thing. So I dont see any reason to switch from CentOS to RHEL. Another reason is , I have already installed CentOS on my separate partition , so I dont want to go to through all of that again :D .
And even if i think to change to OEL( i have downloaded it already ) or RHEL , problem still exists ... " DHCP " ... how do i deal with it ??
for my friend damorgan,
a fixed IP address is preferable but if you need DHCP for some reason just do the install, build your database, and then modify the listener.ora and tnsnames.ora to point to 127.0.0.1 for the host. , I know I need fixed IP, but if I am installing it on my laptop and just for study purpose, Its really not useful to setup static IP and as i wrote in OP, life of student is very adventurous and we never stay at one place right ? so, its not possible to have static IP for me ( unless i use it with VMWare or something like that ) .... now question is, what is this 127.0.0.1 ip you are talking about ? Do i need to add it into HOST file ? A little brief explanation will be helpful here :) ... this stuff is damn easy with windows and i am sure that linux should have have work around of DHCP. I am writing LINUX , instead of going in to specific flavor because i think the solution will be same only the method will change, right ? .
I also looked at the link David posted here , (to be honest , I have not gone through all OSes setup help ) , I can not find even a line mentioning about DHCP Problem. May be I am missing something , David can you point me exact link (if there is any) ?
Any more suggestions guys ?
Peace
Jack
Edited by: Jack Locke on Dec 2, 2009 7:26 AM
Edited by: Jack Locke on Dec 2, 2009 7:31 AM
forgot to write :D lots stuff

%DOT11-7-AUTH_FAILED: Station c023.4921.2100 Authentication failed%Unknown DHCP problem.. No allocation possible

Hi All,
My wireless network system is consisting with 7.5 virtuall wireless controller and few 3600i APs.
All SSIDs & APs have been configured in flexconnect & flexconnect groups.
APs acquire IP address & controller IP address via DHCP option 43.
My problem is,
After I created a new SSID & pushed it. APs don't reboot itself but disconnecting from the controller and never come up back until give a manuall power reboot for each APs.
* DHCP server has not been configured any authentication mechanism for APs.*
I got below console outputs:
*Dec 5 16:56:42.830: %DOT11-7-AUTH_FAILED: Station c023.4921.2100 Authentication failed%Unknown DHCP problem.. No allocation possible
*Dec 5 16:56:54.226: %DOT11-7-AUTH_FAILED: Station c023.4921.2100 Authentication failed
*Dec 21 06:15:03.251: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to down
*Dec 21 06:15:03.283: %LINK-6-UPDOWN: Interface Dot11Radio1, changed state to up
*Dec 21 06:15:04.283: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to up
*Dec 21 06:15:14.135: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to down
*Dec 21 06:15:14.539: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to reset
*Dec 21 06:15:15.135: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
*Dec 21 06:15:15.375: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to up
*Dec 21 06:15:15.387: %LINK-6-UPDOWN: Interface Dot11Radio1, changed state to down
*Dec 21 06:15:15.395: %LINK-5-CHANGED: Interface Dot11Radio1, changed state to reset
*Dec 21 06:15:16.375: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
*Dec 21 06:15:16.387: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to down
*Dec 21 06:15:16.423: %LINK-6-UPDOWN: Interface Dot11Radio1, changed state to up
*Dec 21 06:15:16.435: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to down
*Dec 21 06:15:16.451: %LINK-5-CHANGED: Interface Dot11Radio0, changed state to reset
*Dec 21 06:15:17.451: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to up
*Dec 21 06:15:17.451: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to down
*Dec 21 06:15:17.491: %LINK-6-UPDOWN: Interface Dot11Radio0, changed state to up
., 26)1 06:15:17.983: %CAPWAP-3-ERRORLOG: Retransmission count for packet exceeded max(CAPWAP_WTP_EVENT_REQUEST
*Dec 21 06:15:18.587: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
*Dec 21 06:15:24.427: %EVT-4-WRN: Write of flash:/event.capwap done
*Dec 21 06:15:24.447: %LWAPP-3-CLIENTERRORLOG: Switching to Standalone mode
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: GOING BACK TO DISCOVER MODE
*Dec 21 06:15:24.459: %DTLS-5-SEND_ALERT: Send FATAL : Close notify Alert to 192.168.15.2:5246
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: Invalid event 46 & state 4 combination.
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: SM handler: Failed to process timer message. Event 46, state 4
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: Failed to handle timer message.
*Dec 21 06:15:24.459: %CAPWAP-3-ERRORLOG: Failed to process Periodic Echo timer message.
*Dec 21 06:15:24.507: %WIDS-6-DISABLED: IDS Signature is removed and disabled.
*Dec 21 06:15:26.419: %CLEANAIR-6-STATE: Slot 0 down
*Dec 21 06:15:26.419: %CLEANAIR-6-STATE: Slot 1 down
Anybody know the reason for this behavior ?
Thanks,
Charith

Hi Charith,
It's looks like AP goes into Standalone mode due to it cannot reach your WLC. In flexconnect when it cannot reach WLC, it will go into standalone mode without rebooting AP. (in local mode AP will reboot unless it can find a WLC)
Can you check your AP has reahability to your WLC all the time ? Where the DHCP configured for users ?
HTH
Rasika

WRT54GS dhcp problem

Hello, At our office we use a WRT54GS router (firmware v7.50.5) . The configuration is pretty simple : uplink switch -> Linksys router -> wireless & wired network . The local network setup chosen is with dhcp enabled.The problem is that the dhcp acts like a "dhcp-relay",it forwards the dhcp requests .And on the same vlan our wan is,we do have a dhcp server ; our computers get IP from there. In the setup page I have no option regarding "dhcp relay",it just doesn't work.Why it is forwarding the requests and not processing itself ? Thank you,

problem solved,there was a loop in the LAN.

WRT54G v7 - DHCP Client List problem

Hi all,
I have the WRT54G v.7 - firmware ver.7.00.8.
erroneously i removed the wrong PC from the DHCP Client Table. /Status/Local Network
How i can restore the list adding back the pc to the list, as there is only he option to remove/delete?
One more question,
how many wireless clients/pcs can the router manage without any problem? ...
I noticed that when we are in 3 or 4 wireless clients the connection is very unstable, slow response, connection drops.
Is there anything i can do to improve this matter?
Ty for any tip,
Frluga
Solved!
Go to Solution.

Reboot your computer and it will receive a new IP address from the router.
Greetings from Northern Ontario, Canada

WRT54G - router/DHCP dies a few times a day

I have the same problem - WRT54G - all the machines at our place are macs with various flavors of OS X - mostly 10.4. Every few days - sometimes 4 times a day, the router stops working - basically the DHCP server stops giving out valid IP addresses and nobody - wired or wireless - can connect the the internet. It still appears to be connected the the net via the cable modem, its just the router part that is failing. This is very disappointing. Unplugging the WRT54G fixes it - but sometimes the same problem will happen 15 minutes later.
Message Edited by arvidtp on 08-03-2007 03:45 PM

oops! - the above post was meant to be a reply to another post about the same problem, but this forum mislead me about what I was doing!

WRT54G WAN DHCP issue

my WRT54G was working fine but from last last 8 days
i am using my router on a cable with a dhcp server
but from the last 8 days it is not accuring DHCP
in the status the ip is 0.0.0.0
but if i plug the same cable on my system it works fine but on router there is problem. i have also cloned my systems MAC address on router, reset the router, checked the cables but ended up with nothing
the private lan of router is working fine i connect my notebook and PC with and it all works fine but the router does not accuire an ip address from the cable

Hardwire your computer to the modem and check if it's online. If it is, isolate your computer and your router. Hard reset the router for 30 seconds then powercycled for 30 seconds. Access the router's setup page, configure the wireless settings first. Then under the security tab, uncheck the block anonymous internet/wan requests. Then clone the MAC Address, and lastly, change your router's local IP Address to 10.10.10.1 and save the settings. It will show up as page cannot be displayed OR asks you to release/renew your ip. Power-off your modem and router. Connect the modem to the router's internet port. Boot up the modem first and wait for the cable-link/online/cable light to go steady. Then power on your router, wait for 30 seconds and then access your router's setup page using the 10.10.10.1 number and check for the status. You should have an IP address now.
IF all these fail, upgrade your router's firmware first then repeat the above process. Make sure to hard reset your router after upgrading the firmware.

WRT54G dropping DHCP

Okay can some please give me some help, I have been running a WRT54G ver: 7.0 for abuot six weeks, so far the wireless network drops in and out when if feels like it. Now the DHCP side of things locks up after my wifes Vista laptop turns on and logs in. Also when scanning the wireless network the channel the router is broadcasting on which has been set to channel 6 goes from 1 to 11 at random...
Can anyone tell me if there is a firmware upgrade for my version 7, the site skips this version in the drop down box, or can offer some help please, failing that I am going to take a hammer to it!!
Many thaks Rob
UPDATE: Okay I have found the lastest firmware, which I have installed, I still have the problem of my DHCP not allocating IP's to hosts logging on! I have to power down the router and start again...
Any help out there?
Message Edited by helix1250 on 03-08-2009 02:20 PM

You must reset and re-configure the router after any firmware upgrade...If you have not resetted the router after the last firmware upgrade you must do it it now...
Press and hold the reset button for 30 seconds...Release the reset button...Unplug the power cable from your router, wait for 30 seconds and re-connect the power cable...Now re-configure your router...See if it resolves your concern...

Wrt54gs router pppoe problem

hey guys,
I have a problem with my 'wrt54gs with speedboaster router'. My internet connection is with PPPoE. I've used the router option to connect it with PPPoE. The router gets connected with my ISP with PPPoE, gets the IP-s, DNS-es and everything, I can also ping any host with the router's diagnostic tools, which means that the router is connected sucessfully with PPPoE and is having internet, but the problem is that when the internet is shared through the internal network (the 192.168.1.xxx one), my computer gets IP with DHCP and also the ISP's DNS-es, but I the internet does not work. Something is failing while the internet is being shared from PPPoE to my computer. And one thing to tell is that the PPPoE network has the subnet mask 255.255.255.255 and the internal network has the subnet mask 255.255.255.0.
Anyone knows what is the problem??
best regards.

Ok, so it's cable broadband. You might want to enable MAC address cloning. Go to http://kb.linksys.com and search for anything related to "cable" internet. You may even try searching for your ISP name (eg: comcast).
Also, software that comes from your ISP (if any) is designed to work without a router "in between" modem and PC. If you have that installed, remove it.
Message Edited by neo27 on 01-09-200703:54 PM

WRT54G V6 strange problem with cable modem

I have a cable modem with Comcast Digital Voice. I have a WRT54G V6 with the latest firmware. After much discussion and troubleshooting on the phone with Linksys rep, I returned and swapped the router. No change to the problem. I've seen similar issues, but not exactly the same one, on this board. Here's the situation:
I have an XP computer connected via Ethernet directly to the router. I have 1 Mac Laptop (OSX) and 1 Thinkpad (XP) laptop that use the home network interimly via wireless. I use WEP, but no special filtering.
I can get everything set up fine, and all will work for some time. Like I've seen some other's say, about 30 - 90 minutes worth of online time, and the router seems to hang - BOTH wirless and wired. During this time, my wireless signal does not drop out. But I sudddenly cannot get to the internet.
What makes it especially odd is that my digital voice (VoIP) does NOT drop out, meaning my internet connection is still up (and the cable modem shows no signs of trouble - and a reset of the cable modem makes no difference by itself.
The only thing that fixes the situation is a hard restart of the router (meaning unplugging it and then plugging it back in).
The Linksys help folks had me do a complet reset of everything and then even had me change some parameters, including a change of channel, manual MTU, etc. Nada.... Then I changed the router to a new one... Same-o same-o.
I suppose the Cable Modem could have a bad ethernet port -but I read SO many things similar to this problem on the board that I doubt it.
And to think I dumped my NetGear!!! (It also had problems - that were associated with unstable wireless).
Any help is appreciated. It's a real pain.

One other thing... When it drops out, I cannot even get to the router admin page via my web browser and wired connection to the router. So perhaps this has something to do with DHCP server dieing?

DHCP problem with wireless clients

I've just set up this eqipment
Router/Firewall ASA 5505
Cisco WLC 2125 - Wlan controller
Switch Catalyst 2960
16 Ap's AIR-LAP1131AG-E-K9
Everything was working fine, but after a while there was a problem, spesially with cell phones with wlan and with some laptops. It seems a part of the users that has been connected, then loggout out and try to log in again. It seems that they then dont get dhcp. Can this be a problem with dhcp on the asa 5505? Or does anyone know of any settings that create problems of this type.
Trond

One layman's question:
For DHCP to work, you already permit 0.0.0.0 to ask 255.255.255.255 for its IP adress (i.e port 67 in one end, and 68 in the other).
When a client re-attaches ("logs in again") it will try to use its old adress (the one assigned by dhcp) and ask 255.255.255.255 to renew its adress.
Does your ACLs permit the IP range assigned via DHCP to access 255.255.255.255?
//Svein

DHCP Problem with ASA 5505

Hi. I have an ASA 5505 configured for Transparent Mode. The Outside interface connects to a router (RV042). The router manages DHCP. With the 5505 in the system, all computers can connect to the internet and to each other, except for a few. The problem computers can be made to work if they are set to a specific address, rather than automatically assigned by the router. Some of the iPads work correctly, some do not. At least one Apple Notebook cannot connect even if I enter a static address.
Consulting the documentation, I found that DHCP traffic (UPD Port 67 and 68) needed to be enabled via rules for the Inside and Outside interfaces. I did that in ASDM but now nothing works.
I have pulled the 5505 out of the system and restored it to the configuration that worked for most of the computers.
Any suggestions would be appreciated. I can pull a "show" run from CLI if it is useful.
Thanks...

Understood. I tried adding the "inside_out extended permit ip any any" command, but it made no difference. Because the implicit rule (permit ip traffic to any less secure interface) is still in the access list table, it would seem the additional extended rule is not needed.
When I first received the 5505, it had an older version of firmware. At the time, when I entered any rule in ASDM it deleted the "less secure" implicit rule, which then broke the system since there was no path for internet traffic from inside to outside, as you have stated. With the newest firmware release, however, when I enter a rule, the "less secure" implicit rule does not go away.
So, with help from the folks here I have made progress. Right now the issue is that when the 5505 in Transparent Mode is between the router and user computers, the computers cannot reliably get addresses that are auto-assigned by the router.
Looking through the logs displayed on ASDM, I noticed the following curious statement:
"6 Mar 31 2014 07:16:42 fe80::1131:41c2:3627:8339 63575 ff02::1:3 5355 No management IP address configured for transparent firewall. Dropping protocol UDP packet from outside:fe80::1131:41c2:3627:8339/63575 to inside:ff02::1:3/5355"
However, I have configured a management IP address, and it is listed in the "show" document that I posted yesterday:
interface BVI1
ip address 192.168.1.10 255.255.255.0
So, I am confused.
I appreciate the help. I am new to the 5505, although I participated as a "friendly" in the ASA program some years ago. I recall a similar problem with that setup. Regrettably, I can't remember how we fixed it...
Regards...

VirtualBox 4.0.2 internal DHCP problem in Host-only mode?

Hi,
dos anyone have experience problems with VirtualBox 4.0.2 internal DHCP not working when running Oracle Linux and a Host-Only adapter.
More detailed described my problem is that Oracle Linux don't get a ip from the internal DHCP server om my system. My host is Win 7 (64 bit) and Guest Oracle Linux (64 bit). I have read that there are several ohers who experienced the same problem with the open source version, but that patching the Guest Tools to 4.0.3 helped them. Sadly this is not the case for me. Any suggestions are welcome and thanks in advance.

Thanks for your reply - my problem is that the build in dhcp server is not working for some reason and i dont't gen any ip address assigned. I can see from the VBoxManager that it is running, but i can't get i contact with it from the linux guest.

WRT54G V6 DHCP Problem

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