Dhcp on 8.4(4)

We had upgraded 3 of our firewalls in the last week. Those were ASA 5510s
and were running on 8.2(2)16 before. They were upgraded to 8.4(4) last week. We have
Wireless Access Points in the external segment (outside firewall) and after the firewall
was upgraded, we saw that 3 of our wireless APs could not get IPs (the DHCP server resides
in internal LAN segment), while the other three APs got IPs. Rebooting the firewall also
did not help. We then downgraded the firewall to 8.2(2)16 and all 6 APs immediately got
IPs. Is there a bug related to DHCP relay on 8.4(4)?
Thanks,
Kashish

I upgraded three ASAs (1 5505 and two 5510) to 8.4(4)3 and on all three ASAs which were providing DHCP services to connected networks stopped working. Users could not get DHCP addresses from the ASAs running 8.4.4.3.
I did packet captures from the desktop, basically I see the DHCP requests leaving the desktop, but no replies from the ASA.
I downgraded the ASA to 8.4(4)1 and DHCP immediately starting working again.
I then upgraded back to 8.4.4.3. DHCP failed again. Downgraded the ASA to 8.4.4.1, then DHCP started working again.
Looks like a bug with ASA 8.4.4.3 and DHCP.

Similar Messages

Airport can no longer get DHCP address

Hello,
I'm at the point of dumping the airport base station in the trash, but thought I would try this first.
I have broadband internet service. It worked - until mid morning today. Suddenly it will not work. The base station (old one, white - snow?), though set for DHCP, now defaults to a self-addressed 169... address. I have tried:
- powering off the base station, the cable modem, powering up one at a time, etc etc. Internet provider (insight, IL) says they don't know why the apple base station is unable to renew the DHCP lease.
- The Airport Admin Utility is set to Ethernet, using DHCP. There is no "renew DHCP lease" button there, but I have switched it to connect using modem and then switched backed to Ethernet, hit Update, and back comes Using DHCP ... with a 169.254 address.
- I can connect through the cable modem with my powerbook without a problem. The address starts with 74.134.
I take it the self-assigned IP means there was a timeout or the airport was otherwise unable to get what it considered a valid IP.
Is the base station toast?
Should I buy a router and hook it to that? Seems redundant, with my setup (two laptops, one desktop connected to base station LAN port)
I've spent several hours reading (via direct connect to the cable modem) and trying different wiring / reset combinations, and have about had it. Any thoughts most welcome.
Thanks,
Brian

It is a long while since I tried Google Toolbar, I am not sure what it changes. But I would not expect it to totally remove your options to use the ordinary toolbars.
■ Try
* press the''' alt '''key on the keyboard, that may return the menu bar
* once you have the menubar '''View -> Toolbars ->''' and select which you need
* you may also use View-> Toolbars -> Customise and drag items back or use the restore default set option.
* right clicking on the toolbars also gets you to the customise and show toolbars options
■ have a look at [[Back and forward or other toolbar items are missing]]
PS
I hope you do not need to resort to editing registry settings, the firefox 'dragons' in prefs are user friendly compared with Windows registry. Messing up firefox prefs only really affects firefox normally; whereas errors in a registry edit may prevent you from even booting the computer.

HP LaserJet P1606dn loses their IP address in DHCP mode

Hi,
We are currently encountering what seems to us to be a strange behavior with the HP LaserJet P1606dn printer. The behavior is that, while in DHCP mode, when it goes into sleep mode, it loses its IP address.
It shouldn't be bad because it should wake up when something is sent to it and get back its IP address, but it doesn't. It get stuck in the printing queue and we need to do an "ipconfig/ flushdns" on the appropriate server so it get back its address. This is kinda annoying because we can't even desactivate this sleep mode function, the best we can do is put it to 1 hour which is temporary because it still gonna loses its IP address anyway.
I have searched all over the net for an answer to our problem and the closest one I have find is one on HP forum where the P1606dn loses its IP address in manual mode and switch to DHCP. Even though it wasn't our exact problem, the recommanded solution was to update the 1606dn firmware, which we did. It sadly hasn't solve our problem. At least, we aren't forced to do a flushdns everytime this time and we can force it to print by printing the configuration page...
An other thing we have found is that, it always or well, very often create a second entry in the inversed zone of the dns with an IP adress it won't even use... It is probably important to note that when the printers loses its ip address, the information of the ipv4, the dns and the rest of the address are all 0.0.0.0.
It seems to me that when the printers enters in sleep mode, it loses its ip address so it can save energy, which would be a good thing, but then, it cannot get back its ip address and well, its like the printers says to himself "well, I am lost and I don't know where I am neither at which address I live but hey, it's ok, everything is just fine."
Our configuration :
Windows 7 professional 64 bit on users end
Windows server 2008 r2 enterprise
The printer is connected in LAN
Anyone has stumbled accross a problem like this before with this model?
Thank you

These settings are for setting up your wireless printer to stay connected to your router, keep wireless devices better connected and makes your router secure and hack proof.
1. Set a static IP in the printer (click here) outside the DHCP range of the router (check your manual).
   This is for Linksys routers but can be used for all routers. Verify your DHCP range and change this
   first if needed. More Wireless Printing help is here.
2. Verify in the printer that 'Auto Off' is disabled. Use the Embedded Web Server (EWS) by going to the
   printers IP address in your browsers address bar, click Settings Tab/Auto Off. Or use the Printer
   Assistant, Printer Home Page (EWS).
3. If the printer supports and has IPv6 enabled, turn off IPv6 in the printer.
4. If needed and you assigned a static IP address, try using 8.8.8.8 for the Manual DNS server and
     8.8.4.4 preferred DNS server.
In the router: (Refer to your router manual for information)
5. Use a fixed wireless channel like 1, 6 or 11, never 'auto', try channel 1 first then the rest.
6. Set router to 20Mhz only, or 145Mbps depending on router.
7. Always use WPA2-AES (Personal) encryption, but you can try ‘mixed’ mode.
8. Disable WPS and never use it and disable UPnP for the routers security. Nobody can hack your
   system now and helps with wireless connectivity (if you want to know why, search the web).
9. If you have a dual band router (2.4Ghz and 5.0Ghz bands), make sure the SSID’s are NOT the same,
   they must be different for all bands, even for any Guest networks.
10. SSID broadcast must be enabled.
11. Save all settings. Power off both, wait 2 mins. Power on router wait 2 mins.
12. Power on printer and verify it reconnects to router.
Windows 7/8/8.1   Is Network Discovery on or off?
Control Panel/Network and Internet/Network and Sharing Center/Advanced sharing settings.
Under Home or Work (current profile) / Network Discovery.
Select "Turn on network discovery" and save changes.
Say thanks by clicking the Kudos Thumbs Up to the right in the post.
If my post resolved your problem, please mark it as an Accepted Solution ...
I worked for HP but now I'm retired!

ISE 1.2 - Multiple NICs/Load Balancing for DHCP Probe

Hello guys
Just prepping an ISE 1.2 patch 8 setup in our organization. I am going for the virtual appliances with multiple NICs. It will be a distributed deployment with 4 x PSNs behind a load balancer and there is no requirement for wireless or guest user at the moment. I've got 2 points I will like to get some guidance on:
Our DC has a dedicated mgmt network and I plan to IP the gig0 interface of the PANs, MNTs and PSNs from this subnet. All device admin, clustering, config replication, etc will be over this interface. However, RADIUS/probe/other user traffic to the ISE PSNs will be over the gig1 interface which will be addressed from another L3 network. Is this a supported configuration in ISE?
I intend to use the DHCP probe as part of device profiling and will ideally like to have just an additional ip helper to add to our switch SVI config. Also, it will appear that WLCs can only be configured for 2 DHCP servers for a given network so another consideration for when we bringing our WLAN in scope. We however use ACE load balancers within our DC and from what I have read, they do not support DHCP load balancing. Are there any workarounds to using the DHCP probe with multiple PSNs without having to add each node as an ip helper/DHCP server on the NADs?
Thanks in advance
Sayre

Hello Sayre-
For Question #1:
Management is restricted to GigabitEthernet 0 and that cannot be changed so you should be good there
You can configure Radius and Profiling to be enabled on other interfaces
Even though you are not using guest services yet, you can dedicate an interface just for that. As a result, you can separate guest traffic completely from your production network
Take a look at this link for more info:
http://www.cisco.com/c/en/us/td/docs/security/ise/1-2/installation_guide/ise_ig/ise_app_c-ports.html
For Question #2
If you are using a Cisco WLC and running code 7.4 and newer you don't need to mess with the IP helper configurations.
The controller can be configured to act as a collector for client profiling and interact with the DHCP thread along with the RADIUS accounting task that is running on the controller. The controller receives a copy of the DHCP request packet sent from the DHCP thread and parses the DHCP packet for two options:
–Option 12—HostName of the client
–Option 60—The Vendor Class Identifier
After this information is gathered from the DHCP_REQUEST packet, a message is formed by the controller with these option fields and is sent to the RADIUS accounting thread, which is in turn transmitted to the ISE in the form of an interim accounting message.
Both DHCP and HTTP profiling settings are located under the "Advanced" configuration tab in the WLC
On the other hand, you can also use Anycast for profiling. You can check out some of Cisco Live's sessions for more info on that. Here is one that is from a couple of years (There are more recent ones that are available as well):
http://www.alcatron.net/Cisco%20Live%202013%20Melbourne/Cisco%20Live%20Content/Security/BRKSEC-3040%20%20Advanced%20ISE%20and%20Secure%20Access%20Deployment.pdf
I hope this helps!
Thank you for rating helpful posts!

I want to reserve a static IP address on my Airport extreme. What is the difference between reserving by MAC Address and DHCP Client ID?

I want to understand the differences in the way you can reserve a static address for a device on the network. I had previously set the device itself to an address and then reserved it with DHCP Client ID, which I thought was just the devices static addresss. I'm not sure if this was in fact correct or just happend to work. I know what a MAC address is, but I'm not really sure what the DHCP Client ID is. So it would be great if someone could clarify it, and the difference between reserving address by MAC Address or DHCP Client ID.

A MAC address is a unique identification consisting of letters and numbers in a form that looks like this:
xx:xx:xx:xx:xx:xx
Every network device has a MAC address, which can be found on a label on the bottom or back of the device. Apple calls this the Ethernet ID.
A DHCP Client ID is an optional name that you can assign to a device. For example, on your Mac....
Open System Preferences (gear icon on the dock)
Open Network
Click on Ethernet
Click Advanced at the lower right
You may be able to edit the DHCP Client ID here....for example.....you could enter MJ500's MacBook in the space provided. That would be the Client ID of your Mac.

WRE54G and WAP54G DHCP Problem

Hi,
Please can someone help me.
Current setup:-
Cisco ASA 5505 with DHCP Server enabled on the inside interface.
Linksys WAP54G cabled directly into the above interface on the Cisco ASA.
Linksys WRE54G with a wireless connection to the above access point using the same SSID and Channel.
When connecting my laptop to the linksys access point, the laptop obtains an IP address allocated from the Cisco ASA and works perfectly.
When adding the WRE range extender into the mix and connecting my laptop via the extender the laptop fails to obtain an IP address. The extender is connecting to the AP ok, it has 2 blue lights and i get a strong signal.
I have carried out packet captures on both my laptop and the inside interface of the CISCO ASA. The capture on my laptop shows DHCP discovery packets leaving my wireless interface, however, i receive no acknowledgement. when i run the same capture on the Cisco ASA i see the discovery packet hit the interface and a subsequent dhcp offer packet leave the interface, however, the offer packet does not reach the laptop when connecting via the extender.
Can anyone kindly offer any advise that doesnt involve throwing the extender in the bin!!?
Thanks

The WRE54G is connected after the WAP.
The router's IP is 10.10.10.254 and is configured to allocate DHCP addresses within this range.
The AP's management IP is 10.10.10.1 and the gateway is 10.10.10.254 (router address).
The Extender's management IP is 10.10.10.2 and the gateway is 10.10.10.254 (router address).
When connecting to the wireless network via the AP, it connects and receives an address.
When connecting to the wireless network via the extender, it connects but does not receive a DHCP address. Signal is strong and the extender shows both blue lights.
Message Edited by marchingontogether on 02-03-2010 06:31 AM

Question regarding Airport and DHCP settings

I currently had a Dlink 624 router that just died. I need to get a new wifi router and was looking at the airport extreme base station...
the question I have is with Dlink my dhcp is set to send out 192.168.0.xxx to my network. The apple is 10.0.0.xxx I believe. Can you change the airport extreme base station to 192.168.0.1? and serve 192.168.0.xxx across the network? The issue I have is I have other wifi devices that are already preset to accept the 192.168.0.xxx.

AirPort Extreme Base Station Setup (AEBS) w/High-Speed Cable Modem
Modem/Router Power ReCycling
- Power-off the Cable modem, AEBS, & computer(s). (If possible, leave the modem off overnight.)
- Power-on the Cable modem; Wait at least 30 minutes.
- Power-on the AEBS; Wait at least 5 minutes.
- Power-on the computer(s)
Perform a "hard" reset of the AEBS.
- (ref: http://docs.info.apple.com/article.html?artnum=107451)
Setup the AEBS
With the network components powered down, set up the AEBS, using the AirPort Admin Utility, connect your computer directly (using an Ethernet cable) to the LAN port of the AEBS, and then, try these settings:
AirPort tab
- Base Station Name: <whatever you wish or use the default>
- AirPort Network Name: <whatever you wish or use the default>
- Create a closed network (unchecked)
- Wireless Security: Not enabled
- Channel: Automatic
- Mode: 802.11b/g Compatible
Internet tab
- Connect Using: Ethernet
- Configure: Using DHCP
- WAN Ethernet Port: Automatic
Network tab
- Distribute IP addresses (checked)
- Share a single IP address (using DHCP & NAT) (enabled)
- Use 192.168.0.1 addressing

How do I configure my time capsule to DHCP mode? I had to replace my DSL router, had a network set up before.

I recently had to replace my DSL router. My provider, Earthlink, walked me through the setup and I do have internet access if I connect directly to my Mac. When I tried to use my time capsule, it would not work. The Earthlink tech said I needed to reconfigure my time capsule to DHCP mode. I tried the set up manual and could not make sense of it. My 90 free service is long gone.

and the text in the router mode box came up DHCP and NAT, but the lettering was in a lighter shade than elsewhere and I could not open the drop down box.
You would have had to change some other settings on the AirPort to be able make changes in the drop down Router Mode box.
Your AirPort is already configured as Earthlink suggests.
Try powering off the entire network...all devices....in any order you want
Wait a few minutes
Start the Earthlink modem first and let it run 2-3 minutes by itself
Start the Time Capsule and let it run a full minute
Keep starting other devices the same way until everything is powered back up
Check the network
If still no improvement, I think you need to let Earthlink know that you have done as they asked, and ask for more steps to try.
Hopefully, another Earthlink user will see this post and offer any special information or tips that only they would know.

How do i use my own dhcp server with airport extreme

I just bought an airport extreme and I'm trying to replace my linksys router and another access point.
I have my own dhcp/dns server and I want to continue using it. So far, I was not able to find the way to use NAT without DHCP (like I'm doing now with my current setup).
I want to give the device another chance before I return it to the store. Is there anything I can do?
Thanks

I thought that you could figure out the answer for yourself, but if you need more confirmation.....the choices/options that you need do not exist on an AirPort router.
Cisco or Netgear might be brands to look at. Good luck in your quest.

How do I access router setup page if the router DHCP service is disabled?

When I had DSL, my WRT54G was my DHCP master for my home network. When I got AT&T U-Verse, their "gateway" became the DHCP master and also the wireless access point. But the signal was not strong enough where I wanted to use it, so I hooked up the WRT54G again. I discovered that if I connected the U-Verse gateway to the "Internet" port on the WRT54G Linksys, then my home network was split in two, which I did not want. The WRT54G access point is physically somewhat distant from my wired computer, so I wanted to keep the U-Verse gateway as the DHCP master. (The U-Verse gateway is a router with four "computer" ports but no "Internet" port.)
I followed instructions on the Linksys web site, and using my wi-fi connected computer I re-programmed the WRT54G to be "Disabled" as a DHCP server. Then I powered down and physically connected the U-Verse gateway to a "Computer" port on the WRT54G. This solved my problem: my distant wi-fi computer now has a good signal, and both computers "see" each other.
However, now I seem to have lost access to the WRT54G setup "web page." Is it possible to access the innards of the WRT54G when its DHCP service is disabled? Or would I have to reset the device to factory configuration and start all over if I wanted to make any tweaks?

You can still access the router's web configuration pages even if the internal DHCP server is disabled and it is connected via a LAN Ethernet port to your upstream router.
Did you reserve and IP addresses on the Uverse router for static IPs?
If you did, assign one of these to the Linksys router (LAN) and you will be able to access it from your LAN. Since you are not using the WAN port, the Linksys router will not pull an IP from the Uverse router. You are using the device as a switch.

Oracle10g Installation problem on Linux with DHCP IP

Hi,
I am new to Oracle Products, I have tried to install Oracle 10G on Linux with DHCP IP.
I got the following warning while installing even though I have loopback interface configured.
Checking Network Configuration requirements ...
Check complete. The overall result of this check is: Failed <<<<
Problem: The install has detected that the primary IP address of the system is DHCP-assigned.
Recommendation: Oracle supports installations on systems with DHCP-assigned public IP addresses. However, the primary network interface on the system should be configured with a static IP address in order for the Oracle Software to function properly. See the Installation Guide for more details on installing the software on systems configured with DHCP.
Please help me in resolving this problem or Can I ignore this message?
My Server Configurations:
[root@SQAESMRH5 Oracle_Install_Errors]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:12:3F:79:FA:2C
inet addr:10.10.121.61 Bcast:10.10.121.2 Mask:255.255.255.0
inet6 addr: fe80::212:3fff:fe79:fa2c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:20751998 errors:0 dropped:0 overruns:0 frame:0
TX packets:19278549 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2150795393 (2.0 GiB) TX bytes:438232502 (417.9 MiB)
Interrupt:177
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:12383146 errors:0 dropped:0 overruns:0 frame:0
TX packets:12383146 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1965045834 (1.8 GiB) TX bytes:1965045834 (1.8 GiB)
[root@SQAESMRH5 Oracle_Install_Errors]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
#::1 localhost6.localdomain6 localhost6
127.0.0.1 localhost.localdomain localhost
#::1 localhost6.localdomain6 localhost6
[root@SQAESMRH5 Oracle_Install_Errors]#

This warning means it is not recommended to install Oracle 10g on a DHCP assigned IP address. It could work, but you won't be able to configure Enterprise Manager, since this tool requires a fixed IP address. If possible, have the IP address fixed.
~ Madrid
http://hrivera99.blogspot.com/

DHCP with a WIFI repeater

Hello,
I flashed my old router (an ASUS RT NI6) with DD-WRT and set it up as a repeater.
I can connect to the repeater with my desktop without problem, but my laptop somehow cannot. I usually run Gnome with NetworkManager. The error reported by NetworkManager was a timeout to get an address.
Since I couldn't get more information, I tried to manually connect to the wifi following these instructions: https://wiki.archlinux.org/index.php/Wireless_Setup
But dhcpcd fails with
michel@xone:~$ sudo dhcpcd wlp3s0
dhcpcd[1482]: version 6.1.0 starting
dhcpcd[1482]: wlp3s0: waiting for carrier
dhcpcd[1482]: timed out
dhcpcd[1482]: exited
So I tried to go with dhclient
michel@xone:~$ sudo dhclient -4 -d -v wlp3s0
Internet Systems Consortium DHCP Client 4.2.5-P1
Copyright 2004-2013 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
Listening on LPF/wlp3s0/8c:70:5a:ff:a4:08
Sending on LPF/wlp3s0/8c:70:5a:ff:a4:08
Sending on Socket/fallback
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 13
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
A little more information:
lspci -k
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 96)
Subsystem: Intel Corporation Device c220
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
ip addr
2: wlp3s0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether 8c:70:5a:ff:a4:08 brd ff:ff:ff:ff:ff:ff
Running
sudo ip link set wlp3s0 up
Then I get with ip addr
2: wlp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether 8c:70:5a:ff:a4:08 brd ff:ff:ff:ff:ff:ff
sudo iw dev wlp3s0 scan -- with the relevant wifi I want to connect to
BSS be:ae:c5:c3:dc:22(on wlp3s0)
TSF: 702057511 usec (0d, 00:11:42)
freq: 2462
beacon interval: 100 TUs
capability: ESS ShortSlotTime (0x0401)
signal: -19.00 dBm
last seen: 2920 ms ago
Information elements from Probe Response frame:
SSID: fromage
Supported rates: 1.0* 2.0* 5.5* 11.0* 18.0 24.0 36.0 54.0
DS Parameter set: channel 11
TIM: DTIM Count 0 DTIM Period 1 Bitmap Control 0x0 Bitmap[0] 0x0
ERP: <no flags>
ERP D4.0: <no flags>
Extended supported rates: 6.0 9.0 12.0 48.0
HT capabilities:
Capabilities: 0x187c
HT20
SM Power Save disabled
RX Greenfield
RX HT20 SGI
RX HT40 SGI
No RX STBC
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 8 usec (0x06)
HT RX MCS rate indexes supported: 0-15
HT TX MCS rate indexes are undefined
HT operation:
* primary channel: 11
* secondary channel offset: no secondary
* STA channel width: 20 MHz
* RIFS: 1
* HT protection: nonmember
* non-GF present: 0
* OBSS non-GF present: 1
* dual beacon: 0
* dual CTS protection: 0
* STBC beacon: 0
* L-SIG TXOP Prot: 0
* PCO active: 0
* PCO phase: 0
WMM: * Parameter version 1
* u-APSD
* BE: CW 15-1023, AIFSN 3
* BK: CW 15-1023, AIFSN 7
* VI: CW 7-15, AIFSN 2, TXOP 3008 usec
* VO: CW 3-7, AIFSN 2, TXOP 1504 usec
The repeater used to have a WPA2 with a pre shared key, but I deactivated all security, so I just connect to the wifi with
sudo iw dev wlp3s0 connect fromage
Trying dhcpcd
michel@xone:~$ sudo dhcpcd wlp3s0
dhcpcd[1482]: version 6.1.0 starting
dhcpcd[1482]: wlp3s0: waiting for carrier
dhcpcd[1482]: timed out
dhcpcd[1482]: exited
Trying with dhclient
michel@xone:~$ sudo dhclient -4 -d -v -1 wlp3s0
Internet Systems Consortium DHCP Client 4.2.5-P1
Copyright 2004-2013 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
Listening on LPF/wlp3s0/8c:70:5a:ff:a4:08
Sending on LPF/wlp3s0/8c:70:5a:ff:a4:08
Sending on Socket/fallback
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 14
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on wlp3s0 to 255.255.255.255 port 67 interval 13
No DHCPOFFERS received.
Unable to obtain a lease on first try. Exiting.
I also made sure that I deactivated wicd, NetworkManaget, netctl-auto, dhcpcd before doing this.
I also tried to set a static ip since dhcp is failing
ip addr add 192.168.0.200/24 dev wlp3s0
ip route add default via 192.168.69.1
But that still doesn't work.
Am I missing something? Am I suppose to set a special mode for my card for a repeater?
I tried to look at the conf file on my desktop, but found nothing special.
I can connect with a wire to the repeater, it works fine too.
If anyone has an idea for something else to try, I would love to hear it : )
Thanks!

If your DHCP is half way decent and you aren't running more than one DHCP server on a single network it should work. Some routers seem to be a little fussy when it comes to linux clients. Of course, Arch has a good dhcp server if your router isn't forgiving. But this problem would not be existing on the repeater.

Airport Extreme Not Consistently Assigning DHCP

I am using a relatively new (within the last year) Airport Extreme as the primary router on my home network. Connected directly to the router is a GigE switch, an AT&T Microcell, and another router - an Aruba RAP which creates a secure VPN for my home/remote office network. The connection to my Apple desktop is made through the GigE switch, as are three additional wired connections to other devices in my home, including two Apple TV's and (hopefully) two Airport Expresses.
I recently discovered when trying to configure a new Airport Express to extend my wireless network over ethernet (roaiming network) that my Airport extreme is not consistently assigning the IP addresses within it's defined DHCP range (10.0.1.0 - 10.0.1.200). About half of the time devices on the network are getting a default 169.254.x.x IP address, which (in the case of my desktop) results in an 'self assigned IP' error within the network settings. I can reboot my apple desktop and the next time it gets a correct 10.0.1.1 address. Reboot again, it defaults back to a 169 address - and so on. It doesnt seem to make any difference if I connect my desktop directly to the Extreme, or, if I connect it through the GigE switch. And, every time I get a 'self assigned IP' I have no connectivity beyond the Extreme (no internet), and I'm forced to use my wireless/Airport connection.
Another problem here is that the Expresses both expect to receive 10.x IP addresses and when they don't get one, they basically become pretty $100 paperweights when connected over ethernet. Also, if you try to configure a new Express without the 10.x address it expects to be assigned (and defaults to a 169.x), the Airport Utility will no longer 'find' the Express once the Express auto-restarts and the update will fail. I learned this after spending two hours on the phone with Apple support yesterday - during which they were able to get my first generation Express configured, but, not my 24-hour old second Generation Express, which continues to act only as a paperweight. Oddly enough, everything works perfectly well if I use only wireless connections to the Extreme - there are no IP problems and everything works correctly. Unfortunately, I want to use wired connections for all my devices (expresses, Apple TV's) because we stream alot of audio and video.
Is my Extreme not working correctly? Does anyone think it's problematic to have a second router (the Aruba) connected behind the Extreme? I suppose I could force some components to use only specific IP's, but, that sounds like a pain. If the Aruba is problematic, I would also consider a second internet connection, or, finding some way to split home IP traffic vs work IP traffic.
Thoughts?

I've been doing some research and it appears the 'self assigned IP' address is a common problem in the Apple support community. And, for what it's worth, it appears an inability to isolate or accurately troubleshoot the problem - by users or Apple tech support - is a recurring theme. I totally understand that no two home networks are exactly alike (different ISPs, switches, configurations, etc.), but, after being a die-hard PC user for my entire life I can honestly say I never encountered anything like this while using my PC. I'm not about to trash my Mac, but, the Apple 'ease of use' selling point is quickly losing it's lustre.
I got into this mess because I added a GigE switch to my network. Rather than buy a different switch (a tactic which assumes my problems are being caused by the switch) I'm inclined to buy another Airport Extreme and try daisy-chaining them together to overcome the reason I bought the GigE switch in the first place, which is not enough ethernet ports on the Extreme. That, or I'll spend a weekend in my attic re-wiring my home network to daisy-chain my two Express devices together instead of requiring individual connections to my router. My experience with Apple hardware thus far is that it prefers to 'play nice' with other Apple hardware over non-Apple hardware. It could be $100 error on my end (or, a weekend of not doing yardwork), but, I think it's the best shot. Other possible fixes, including manually assigned IP-addresses, put too much emphasis on software and network configuration - which (by my non-scentific analysis), are two areas even harder to troubleshoot.
I'll let you know how it goes.
Mh
Post Script - Dear Apple: please find a way to significantly increase the number of ethernet ports on your Airport Extreme Router. Thank you.

Cisco ASA 5505 and DHCP Client Problems

Hi, i have a problem. I've connected my ASA appliance to an ADSL modem, and i dont get an DHCP address on the outside interface (e0/0). I use the asa-722-19.bin firmware.
I turned on the debugging for the DHCP client and could see that the ASA device was sending out broadcasts but a reply never came. Instead I connected the device to my internal network where the ASA got an address instantly.
I read somewhere that if I was to use ?ip address dhcp client-id fastethernet 0″, then I got an address from the ISP.
I tried looking for a similar command on the ASA5505 but I couldn?t find anything. I did however find a page on the Cisco site confirming my suspicions. It said some ISP?s require the client-id field of the DHCPDISCOVER request to be filled.
I've also read that this issue has beed fixed since a few weeks, now they have released version 7.2(2).22 where you can define ?dhcp-client client-id interface outside? in global configuration mode. Im running 7.2(2).19 and i cannot find any command like that in my appaiance. How do i fix my problem ? Or how do i get about recieving the 7.2(2).22 firmware update.
Regards !
Leif

Hi again! I thought I should share the solution that worked for me. I use software version 7.2(2) on this device. ASDM 5.2(2). In ASDM open configuration / Interfaces. Click in outside (my case 0/0) and press Edit. Then open the tab Advanced and set the correct Active Mac address. Fore some reason its empty by default and the ISP/modem don't like that. You will find the correct MAC address under the help menu / "About ASA". Im sure there is some another way to do this but this is a simple "how-to" that works with Swedens biggest ISP and their standard DSL modem.
When I used a Linksys DSL modem in bridge mode without the MAC address set I got an inside IP adress (192.168.x.x) from the modem to the ASA. After setting the MAC address I just had to do a renew and got the outside address right away. /Bjorn
(future users searchwords: no ip from isp, ASA 5505 and cable modem).

ASA Migration of DHCP Scope to a Server

Hello All,
We migrated the DHCP scope from the ASA to a MS DHCP server with this configuration:
group-policy BV-SSL1 internal
group-policy BV-SSL1 attributes
no address-pools value remotepool4 remotepool2 remotepool3
no intercept-dhcp enable
dhcp-network-scope 10.180.49.0
exit
tunnel-group BVVPN10 general-attributes
no address-pool remotepool2
no address-pool remotepool3
no address-pool remotepool4
dhcp-server 10.182.14.55
exit
tunnel-group BV-SSL general-attributes
no address-pool remotepool2
no address-pool remotepool3
no address-pool remotepool4
dhcp-server 10.182.14.55
exit
no vpn-addr-assign aaa
no vpn-addr-assign local
vpn-addr-assign dhcp
This is running good, until we used all 254 addresses that was specified in the dhcp-network-scope.
My question is should i have specified dhcp-network-scope none to allow for all 3 scopes can be used to hand out IP addresses for the remote users?
Thanks,
Kimberly

Okay, that's at least a good start. Can you monitor the ULS logs while you attempt to browse to the site to see what form of error(s) you're getting?
Trevor Seward
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This post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

No errors with NAT or DHCP, but can't ping server or access internet

2 weeks ago my Xserve was positioned directly behind a modem and acted as the router to my small office - supplying DHCP, NAT, etc. Then, the Xserve lost it's connection to the internet. The Xserve was unable to pull an address from the modem (via DHCP) and troubleshooting the issue with my ISP resulted in getting my modem swapped.
My Xserve is still unable to pull an address via DHCP directly from the modem. So, I called apple support. The tech I spoke to was extremely helpful and instructed me to place the Xserve behind a router so it could use a static ip - without having to pay my ISP for one. So, I did as he instructed.
Regardless, since my Xserve originally lost connection to the internet I have been unable to get my Xserve to supply NAT to my internal network successfully. DHCP is working fine, the firewall isn't logging any refusals, NAT isn't returning errors. All internal network functions work, I just can't access the internet from any machine other than the server.
Here is the network port breakdown:
Ethernet 1 (wan)
ip: 192.168.1.2
sub: 255.255.255.0
router: 192.168.1.1 (router supplying static ip)
dns: 208.67.222.222,208.67.220.220 (opendns)
Ethernet 2 (lan)
ip: 192.168.1.3
sub: 255.255.255.0
router: 192.168.1.3
DHCP settings:
start ip: 192.168.1.4
end ip: 192.168.1.254
sub: 255.255.255.0
interface: en1
router: 192.168.1.3
Firewall:
Allow all traffic from "any"
NAT:
IP Forwarding and Network Address Translation
External network interface: Ethernet 1
NAT Port Mapping Protocol enabled.
Other notes: I can see the Xserve from any device on the network (in Finder running OS X) but I cannot ping it via the router's ip. (example: ping 192.168.1.3) 100% packet loss.
The Xserve does have access to the internet.
The Xserve leases an ip to the devices on the network, but cannot ping them using their leased ip address.
Initially, I was receiving the following error:
"xserve subnets: create failed, Invalid/missing 'net_address' property
So I modified bootpd.plist by adding:
<key>net_address</key>
<string>192.168.1.0</string>
I no longer receive the error and DHCP works properly.
Any help is thoroughly appreciated as this issue has set me back over a week in troubleshooting.

Thanks again.
I'll try to be more clear about my current setup:
Modem
->
Router
DHCP enabled but supplying server with static ip of: 192.168.1.2 - hence my Ethernet 1 settings on my Xserve. The DHCP address the router supplies to other devices range between 192.168.1.101 - 192.168.1.150 (this is temporary). I'm using the Router as a temporary network connection for devices as I continue to setup the server. Once the server is completed, I will hook everyone up through the switch.
->
Xserve
The Xserve receives a static IP from the router above (192.168.1.2) even though the router gives DHCP addresses to other devices. The Xserve then goes out Ethernet 2 to (which has also been assigned a static internal address: 192.168.1.3) a switch.
->
Switch
The Switch definitely has DHCP disabled, and merely extends the network connection.
Right now, the Xserve is doing nothing other than attempting to supply an internet connection to devices attached to it. I performed a clean install after a day or two of troubleshooting.
I really want to be able to control content access as well as give certain devices priority over others using the Xserve. I want it to control... the network, in all aspects: DNS, Open Directory (Master), Firewall etc. Am I still able to control the network with the Xserve if it is hooked up side by side to the clients without reconfiguring my router to hop through the Xserve before going to the internet? If not, why not just use the Xserve as a middle man as I currently do?
What are the benefits of using it side by side to the clients? What are the drawbacks of my current setup? (Other than it not functioning)

Dhcp on 8.4(4)

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