New 7821 DHCP Issues

We are trying the new 7821 and it won't pull an address from the dhcp server/router. It's set up as standard dhcp with option 150 for voice. Our 7962s receive an address right away, so the only difference one is using the skinny protocol and the other SIP. Should I be using a different option?

This was an issue in phone firmware as it turns out:
This is the BugID that is the most likely cause of the issues:
78xx Cannot join VLAN if broadcast over 30kbps
CSCun23612
Description
Symptom:
78xx Devices are not able to process CDP response to gain VLAN knowledge from switch when large amount of broadcasts (30kbps / approx 40 to 60 pps) on VLAN/Subnet are occurring.
The phone looks like it will still follow through with DHCP requests but will not accept the offered DHCP address due to the phone not knowing the VLAN structure.
** Issue does not occur when same amount of traffic is sent directly to the phone; only when it is broadcast traffic.
Conditions:
78xx on a switch port with a VLAN with a large amount of broadcasts occurring in subnet.
Workaround:
Reduce Broadcast traffic below 30kbps and reboot phone
or
Remove VLAN from Switch port that has the high Broadcast traffic.
Confirmed by only have access vlan on the switch port and phone registered and upgraded all perfectly fine.
Neil

Similar Messages

Wierd DHCP Issue

Hello All,
I facing a very wierd DHCP issue and would like to know your thoughts on it.
I have my wired clients on vlan 1 and wireless cleints(eap-peap) on VLAN 2.
We are facing an issue where multiple wired clients who were on access port vlan 1 are receiving IP address from wireless subnet(vlan2) -their DHCP server was the WLC virtual gateway IP address(1.1.1.1). This is causing an outage to few wired clients.
The WLC trunk does not have vlan 1 allowed on its ports and all APs are in local mode and all on access vlan.
I'm not entirely sure whats causing this, but only way I think this is possible is that 'A Client' laptop has his network connections bridged - his wired nic on VLAN 1 and wireless NIC on vlan 2, acting like a WGB, which is causing new wired clients(vlan1) DHCP broadcast request forwared through the bidge mode laptop to AP--> WLC. Do you think this is possible??
Havent been able to identify which client is causing this issue yet.
Has anyone faced a similar issue and anyway to block this through WLC/ACS policy?
Thanks
Jino

Hi,
Might we consider to make use of network monitor to take a look at the traffics for the 1.1.1.1 address?
How to use Network Monitor to capture network traffic
Download link here:
Microsoft Network Monitor 3.4
Best regards
Michael Shao
TechNet Community Support

Cannot send email from my iPhone or iPad. The server rejects a recepient for no apparent reason. The recipient is not new. This issue happens on reply or reply to all or froward; not a new email. What is happening?

Cannot send email from my iPhone or iPad. The server rejects a recepient for no apparent reason. The recipient is not new. This issue happens on reply or reply to all or froward; not a new email to the same recepient. What is happening?

I talked with a tech today and he said I cloud is having problems which should be resolved shortly.
In the mean time I used the .me smtp server settings which allowed me to send mail.

Photoshop CS4 new document dialog issue...

http://img50.imageshack.us/img50/7835/optionpu6.gif
Can this Photoshop CS4 new document dialog issue be improved? Info in the pic.

there's a feature request section at the top of the fourm allen. these kinds of posts should be done in there, so the programmers and engineers at adobe have them all in one place.

Anything new with keyboard issues in XP

read alot of posts but doesnt appaer to be anything new on keyboard issues in XP. works for awhile then nothing.mouse does work. i dont have an old keyboard around i can use. was hoping it was something to do with XP settings.
any word ?

I seemed to have the same issues other people were reporting: USB keyboard would disconnect every five minutes or so, would sometimes re-connect by itself, would other times freeze and require re-plugging. The mouse would usually keep working even when plugged into keyboard. This would happen on all USB ports. It was most noticeable in Windows (through Boot Camp and through Parallels), but it would also happen less noticeably in OS X. In OS X, it would often recover without re-plugging, but errors would show up in the Console logs. It seemed to get worse the longer my computer was on.
Turned out, for me at least, to be a faulty keyboard. Although I tested the keyboard on another computer and it was fine, on the Intel iMac it had the disconnection problem. I repaired permissions, verified the disk, reset PRAM, restarted in Safe Boot, but nothing helped.
I called Apple about it. They replaced the keyboard under warranty, and since then (about two weeks) the problem has not occured once, in OS X or in Windows.
If you haven't done so already, I recommend thorough troubleshooting. Disconnect all other peripherals other than the mouse and monitor your logs in OS X (open Console under Utilities) to see if USB errors come up. Boot into in Safe Boot mode by pressing Shift on start-up. If the error still comes up in OS X, as it did in my case, then you have a valid problem you can call Apple about. If it happens only in Windows, unfortunately it might be harder to make a case since Boot Camp is beta software. When you call Apple you can desscribe all the testing you already did.
(are you still under warranty?)
20" iMac Core Duo Mac OS X (10.4.6)

Very weird dhcp issue

We've started 're-vlanning' our main location here, breaking up depts
into their own vlans.
All seems ok so far, aside from a real doozy.
For the IT vlan, we have one address that will not talk to our web
content mgmt appliance. It's the 2nd address in our assignable pool,
and it doesn't matter if it's dhcp or statically assigned, that address
will not talk to that device.
That is the *only* device that cannot be reached from this particular
address in our dept vlan, every other one works fine.
Any ideas on this?
Stevo

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
> and it doesn't matter if it's dhcp or statically assigned, that
> address
So.... the title of this thread should actually be 'Very weird non-DHCP
issue', since your own testing confirms this has nothing to do with DHCP?
If you do a LAN trace on this machine as well as your web content
management appliance do you see packets on either side? Both sides? If
not on both sides but you do on the source (workstation) side see
packets going out, then get LAN traces after each network device
(switch, router, firewall, etc.) to see when the packets disappear.
Feel free to post the LAN traces somewhere with descriptions of IPs,
ports, and what you should be seeing, if you want to post them somewhere
for review.
Good luck.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.18 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
iQIcBAEBAgAGBQJP4jFPAAoJEF+XTK08PnB55aMP/3Rg9u6LX6jFCXGYuex/oXdS
NZ/liqfCgjyIcykWWeKGgdtm2I7JZOcFiG8YW2le55mcltvCL1VJW +1VGng4kZER
0f4hjfyQ3CcQ6HIU3RM6VL5U2Pblb80MsEQe0qo0xgtPXipmjs i7Q0xIv9p0wT7A
7JMkfgM9tfuI5Yro+BDLfSIkFWicKuKs1sKpNugKalPuyyRrzW IiznoalIKFshon
a40ETLJVZmngBYfqfeZL9nPNsFlveFNXrDkdbl2WbaprsHtNnA NwZfVUIlc5kOCT
MknY0GXof4/tk149OVCCLgjEzoRtTIZH0BJTHQwW7ANkWUUNYwi49+Mk46V0o awl
oe1aA+NK9gl2bWXWLCtTro4ERSVMvkcI0OffytrfcBsqdCKg/g3QPMjV3kiVEULI
xnSTsqFgOl2qO8qGaL6FJtk39ZBnCwqDPtmoNt93OK4hAhWBuA Xihc+kiQHrwkpO
O04quZu8qQG6A6qwFDr+r+QqarFR3kielfvi7H6o5iLfZn/sDhvijGOAknJVctH8
j8fezki9PMznkcT+of2Oe4T99K9fChN2WFSgUKdlpkYSjbkmjP fdbWloou+WBjCm
7hHwnAbKPPgoN8aPPfw9rG9E+K/0YW2kt4wRu79BEDvF6eMv0UdDPE1qPuw1ttmm
jg2zzMZDkgIG39A0P3u7
=+fCy
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6500 DHCP ISSUE

Hello All,
I am having an issue do DHCP from the 6500, and was hoping someone cant help. So, I tried to setup DHCP from the FWSM to the clients and this worked fine with giving out the IP, however the gateway for devices on the inside is supposed to be the 6500, not the FWSM, which is why the clinets wouldn't get out to the internet. Do I need to set up DHCP relay on the FWSM or does anyone know the way I can setup DHCP on the 6500 to give out IP's to the clients. Again just to reiterate, when I setup DHCP on the FWSM the clinets get the IP's but do not get out to the internet and when I setup DHCP on the 6500 the clients do not get an IP. Also I know tghis is a dhcp issue becasue when I assign a static address on the network the clients get out fine. Thanks in advance for the help!
6500 Config
ip dhcp pool TEST
   network 1.1.1.0 255.255.255.0
   default-router 1.1.1.1
   dns-server x.x.x.x y.y.y.y
FWSM Config
FWSM/TEST# show run
interface Vlan3
nameif outside9
bridge-group 1
security-level 0
interface Vlan203
nameif inside9
bridge-group 1
security-level 100
interface BVI1
ip address 1.1.1.4 255.255.255.0
passwd 2KFQnbNIdI.2KYOU encrypted
access-list INSIDE1_IN extended permit ip any any
global (outside1) 1 x.x.x.x
nat (inside1) 1 1.1.1.0 255.255.255.0
access-group INSIDE1_IN in interface inside1
route outside1 0.0.0.0 0.0.0.0 1.1.1.1 1
FWSM/TEST#

Hello Alain,
Thanks for your quick response. I attached a Diagram of the layout. Just to let you know this is an FWSM with many virtual contexts and most including this one that are Transparent. I understand that I need an access-list on both ends to specifiy so the FWSM opens it, I am just having issue because the FWSM sees this as unsual traffic and the access-list needs to be on-point to work. Thank you for the response and I'll look forward to hearing back from you.

VRF and DHCP issue

VRF and DHCP issue
We have a 6500 ( 12.2 (33) SXH5 ) that has a VRF running for our guest network. On this 6500 resides the DHCP pool with a range defined for our guest network. We have a stack of 3750's (12.2 (46) SE) connected to the 6500 with a L3 connection. The 3750's have a local guest VLAN with its gateway defined in a VLAN interface. This VLAN on the 3750 has an IP helper address pointing to an IP within the VRF on the 6500. When debugging DHCP on the 6500, a request is received and sent back out. The client never receives this request.
If a static IP is applied, the client is able to communicate anywhere within the VRF successfully (including pinging the IP within the helper-address. As many posts have pointed out - there is no VRF <name> under the ip dhcp pool <name> within the 6500. I am just wondering if anyone else has run into this and what their solution was.
Thanks.

Hi,
I have tested the dhcp server and vrf on Cisco 3640 and it is working without VRF under the ip dhcp pool. Please ensure that you have configured routing for the dhcp-relay agent(VLAN facing dhcp client on 3750 in your case).

Add switchports to new VLAN/DHCP pool

Hello community,
Our company recently added a new VLAN/Subnet/DHCP pool to seperate the physical workstations. I updated a few interfaces to the new VLAN...which is fine for testing a few workstations, however what is the best approach and least disruptive way to update a range of ports to the new VLAN/DHCP pool.
Can we update the Interfaces to the new VLAN with the range command.....let the current DHCP lease expire and then they would get an ip from new Pool? Should we lower the lease time on old pool? ...I think it is currenty set to 24hr (default)
Please include IOS commands
Much appreciated!

Hello,
Create the new DHCP pool on your DHCP server, and lower the lease time of old pool, after pcs are get the new ip addresses, create a new vlan and assign the ports to this vlan.
ip dhcp pool OLDPOOL
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
ip dhcp pool NEWPOOL
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1
interface range f0/1 - 24
switchport mode access
switchport access vlan 1

Suddenly unable to get new users IP's (Probably DHCP issue)

Hi,
I just took over the support for a small business and while fixing a "roaming profiles" issue I realized that new computers (clients) were not able to get new IP Address or they don't have internet.
I have verified the physical connections and the obvious: (Server has internet, rebooted machine, restarted DHCP Service) but I didn't get proper documentation about the server.
I think it's a Gateway and from the DNS I see it has all Secondary zones set up.
The connected clients don't have any issue anymore.
How can I verify if DHCP is running fine?
Why would the server suddenly stop allowing new IPs?
I have to figure this out by tomorrow so anything you need I'll be following very closely all posts.

I am seing these in the logs:
Nov 14 00:01:43 bumblebee bootpd[190]: DHCP DISCOVER [en0]: 1,0:1c:10:b7:91:2e <207.115.108.186>
Nov 14 00:01:43 bumblebee bootpd[190]: service time 0.001088 seconds
Nov 14 00:01:45 bumblebee bootpd[190]: DHCP DISCOVER [en0]: 1,0:1c:10:b7:91:2e <207.115.108.186>
Nov 14 00:01:45 bumblebee bootpd[190]: service time 0.000325 seconds
Nov 14 00:01:49 bumblebee bootpd[190]: DHCP DISCOVER [en0]: 1,0:1c:10:b7:91:2e <207.115.108.186>
Nov 14 00:01:49 bumblebee bootpd[190]: service time 0.000391 seconds
Nov 14 00:01:57 bumblebee bootpd[190]: DHCP DISCOVER [en0]: 1,0:1c:10:b7:91:2e <207.115.108.186>
Nov 14 00:01:57 bumblebee bootpd[190]: service time 0.000347 seconds
Is this something normal?

DNS / DHCP Issues in Server 2008R2 Domain

Hi folks,
We’ve been having an ongoing issue for a while now in that some PCs and laptops (Win 7) in our company can’t be contacted by hostname i.e. if we try and RDP from one Windows 7 PC to another the RDP session fails as if the PC isn’t turned on, but it
is indeed turned on and connected to the network.
Even if we ping the host name of a particular computer that is on it fails to reply but if I go into DHCP I can find the hostname bit it has a different IP address assigned to it other than what is listed in DNS for that host name.
So for some reason when some computers get switched on and be allocated a new dynamic IP address through DHCP the corresponding record in DNS doesn’t seem to get updated meaning we need to go into DNS and manually amend the Host A record with the new
IP address that it has been given so we can RDP onto that computer using the hostname.
At present aging and scavenging isn’t enabled in our environment as we are afraid to in case it removes live DNS entries that just haven’t been turned on in a wee while. Does aging and scavenging just ignore static DNS entires and does aging and
scavenging work in DHCP as well?
One other thing I noticed is that if I delete an incorrect DNS Host A record and create it manually and assign the hostname and the correct IP address it says static rather than having a timestamp on it. When I create the new record I always click on our
domain in the Forward Lookup Zone and on creation I always select Create the associated pointer (PTR) record so not sure why the manual record doesn’t get a time stand.
So any help/advice or suggestions would be greatly appreciated.
Thanks,
Bonemister

Hi David,
Thanks for your reply and for clarifying those things for me. Unfortunately in my workplace when I add a manual DNS Host A record it does become a static entry and doesn't have the '0'
you mention, do you have any idea why that would be as I'm worried about it affecting things if I were to enable aging and scavenging.
Is it possible to just enable aging and have it remove entries before a time of my choosing or does scavenging need to be enabled also?
I still can't understand why the relationship between DHCP and DNS isn't working correctly. Sure if DNS has an A record for a computer and the IP address changes via DHCP there is bound to be
a way to setup DNS to be able to update the records it holds - do you know if my reading of this is correct.
By the way, I can confirm that my adapters TCP/IP DNS settings are the same on of the PCs that had the DNS fault as in your screenshot the only different is we have the tick in Append parent suffixes... - would that make a difference.
Thanks also for that other link, it seems very interesting and I'll have a good read through it carefully before doing anything!!
Thanks again for you reply and I look forward to seeing any responses.
Regards,
Bonemister

[Solved] Several installs and issues with DHCP issue every time.

Edited: more concise information!
Hi folks,
I was using Arch fine for months but decided to reinstall it fresh at the new year, but since then I have been plagued by connection issues. I install Arch and follow many of the tips found in these Wikis to set it up how I like then install preload and readahead.
Post-Installation Tips
http://wiki.archlinux.org/index.php/Pos … ation_Tips
- LCD filtered fonts
- Disable IPv6 (I use Chorus/NTL and they have a tip for improving Firefox that disables IPv6, so I think that this is not to blame)
Laptop
http://wiki.archlinux.org/index.php/Laptop
- Battery state monitoring utilities (acpi)
- Laptop-mode-toold
- Powernowd
Maximising Performance
http://wiki.archlinux.org/index.php/Max … erformance
- Swapiness
- Mount /tmp to RAM
My internet connection works fine, even when rebooting, but later I turn on my computer and WICD or networkmanager fails on "obtaining IP address. I really think that there is something in one of these tips that is causing this problem, but I am at a loss as to what. Like I say, I was using it happily for many months before these current issues. The only thing I did differently was systematically set up my computer with all the tips detailed above, where as before, I collected these tips over a period of time and did not do them all straight after installation. I have tried rolling back the changes and this has not fixed the issue.
I have had this issue over many reinstalls, using networkmanager or WICD and each time I was hoping that I was doing something wrong. I have an Ubuntu and work Windows laptop that both work fine, so I don.t think it is anything to do with the connection itself.
I am not sure what information you would need so I thought I would post both of these files. If you would like anything else, give me a shout and i can post it.
# /etc/rc.conf - Main Configuration for Arch Linux
# LOCALIZATION
# LOCALE: available languages can be listed with the 'locale -a' command
# HARDWARECLOCK: set to "UTC" or "localtime", any other value will result
# in the hardware clock being left untouched (useful for virtualization)
# TIMEZONE: timezones are found in /usr/share/zoneinfo
# KEYMAP: keymaps are found in /usr/share/kbd/keymaps
# CONSOLEFONT: found in /usr/share/kbd/consolefonts (only needed for non-US)
# CONSOLEMAP: found in /usr/share/kbd/consoletrans
# USECOLOR: use ANSI color sequences in startup messages
LOCALE="en_GB.UTF-8"
HARDWARECLOCK="UTC"
TIMEZONE="Europe/Dublin"
KEYMAP="uk"
CONSOLEFONT=
CONSOLEMAP=
USECOLOR="yes"
# HARDWARE
# MOD_AUTOLOAD: Allow autoloading of modules at boot and when needed
# MOD_BLACKLIST: Prevent udev from loading these modules
# MODULES: Modules to load at boot-up. Prefix with a ! to blacklist.
# NOTE: Use of 'MOD_BLACKLIST' is deprecated. Please use ! in the MODULES array.
MOD_AUTOLOAD="yes"
#MOD_BLACKLIST=() #deprecated
MODULES=(acpi-cpufreq vboxdrv coretemp)
# Scan for LVM volume groups at startup, required if you use LVM
USELVM="no"
# NETWORKING
# HOSTNAME: Hostname of machine. Should also be put in /etc/hosts
HOSTNAME="laptop"
# Use 'ifconfig -a' or 'ls /sys/class/net/' to see all available interfaces.
# Interfaces to start at boot-up (in this order)
# Declare each interface then list in INTERFACES
# - prefix an entry in INTERFACES with a ! to disable it
# - no hyphens in your interface names - Bash doesn't like it
# DHCP: Set your interface to "dhcp" (eth0="dhcp")
# Wireless: See network profiles below
#Static IP example
#eth0="dhcp"
eth0="dhcp"
INTERFACES=(eth0)
# Routes to start at boot-up (in this order)
# Declare each route then list in ROUTES
# - prefix an entry in ROUTES with a ! to disable it
gateway="default gw 192.168.0.1"
ROUTES=(!gateway)
# Enable these network profiles at boot-up. These are only useful
# if you happen to need multiple network configurations (ie, laptop users)
# - set to 'menu' to present a menu during boot-up (dialog package required)
# - prefix an entry with a ! to disable it
# Network profiles are found in /etc/network.d
# This now requires the netcfg package
#NETWORKS=(main)
# DAEMONS
# Daemons to start at boot-up (in this order)
# - prefix a daemon with a ! to disable it
# - prefix a daemon with a @ to start it up in the background
DAEMONS=(preload syslog-ng hal wicd @powernowd @laptop-mode @fam @alsa @sensors @readahead-list)
/etc/resolv.conf
# Generated by dhcpcd
# /etc/resolv.conf.head can replace this line
# /etc/resolv.conf.tail can replace this line
Thanks for your help,
Scott
Last edited by ScottArch (2010-02-14 12:30:25)

Hey Scott!
I don't know if it is helpful in any way but I have a similar problem with my desktop PC.
I have two ethernet controllers installed and somtimes I had a Ip address assigned and sometimes I didn't.
One which is connected to the router and a 2nd one I use sporadically to connect additional computers.
The dhcpcd would fail to load even if I followed steps suggested from other forum members.
My temporary fix was to run:
# dhcpcd
manually.
If this helps you might consider adding "dhcpcd" at the end of
/etc/rc.d/network
I know it's not really a fix but it helps me to get a working connection whoch otherwise would fail - or work if lucky but i don't like lucky with network/internet ^^

2100 wireless LAN controller intermittant DHCP issue does not respond to clients

Hi everyone,
I have been struggling with a difficult problem for some time now:
The cisco 2100 wlan controller I have is configured with a dhcp scope in the same ip address range as its WLAN. The configuration works and on a good day I have up to 200 clients connecting with out issue. In the web interface they display as associated and authenticated
On a bad day I find I will begin seeing about 50-80% of all new devices that attempt to join the WLAN show up as associated but not authenticated. These clients end up self assigning themselves a 169.254.0.0/16 (APIPA) address
When my controller / WLAN enters into this state: if clients leave the WLAN they typically fail to get back on and successfully authenticate. By the end of a day around 80-90% of all devices are essentially without Internet access due to this issue.
Rebooting the controller and or APs typically makes no difference or makes things worse – although sometimes it appears to resolve the issue. The same holds for disabling the entire wlan for about 10 minutes and then re enabling it.
Im using 1130 cisco aironet APs with the controller. I have checked extensively for interference and congestion – I think I have congestion – some APs typically host 40 to 90 devices. However as mentioned on a good day the wlan will host 200 devices all day without any issue and some APs will host 50 to 70 devices without major issue.
I can provide more specifics if anyone should need – eg firmware, IP addresses, exact model numbers etc.
Please let me know if anyone has seen something like this before ?
I believe the 2100 is rated to handle up to 350 devices and its recommended not to load a 1130 AP with more than 25 devices ??
Regards
Matthew

Hi Amijad, Hi George:
Thank you both for your time in considering my situation.
I will think about implementing an independant DHCP server; im really wondering if the equipment is just overloaded
- What software versoin the WLC uses?
Product Version.................................. 6.0.199.4
RTOS Version..................................... 6.0.199.4
Bootloader Version............................... 4.0.191.0
Emergency Image Version.......................... 6.0.199.4
PID: AIR-WLC2106-K9, VID: V05
- What ports of the WLC are connected to the neighbor swtich? one or more?
2 ports connect to the neighbor switch on separate vlans
- port 1 is vlan 0 and hosts the management and ap-management IPs for the wlan controller
- port 2 is vlan 1 and hosts the wlan
- the controller has one dhcp scope defined on port 2 for the WLAN
- What is the security of your WLAN?
WPA+WPA2
AES
PSK
- Do you have "DHCP required" enabled on the WLAN?
yes DHCP required is enabled in the WLAN
please let me know if you have any additional advice.
regards
Matthew

Using X3500 as a Wireless Extender DHCP issue iPhone 6

Hi
Hopefully a simple question with a simple answer.
Background:
I've transitioned away from my ADSL ISP to a cable provider (VirginMedia). My new ISP comes with a cable modem (SuperHub 2 ac) and I've connected the two devices together to extend my home wireless network. The cable modem is The two routers are physically remote from each other - connected via just their Ethernet ports - via power-line technology (Devolo dLAN 1200+). The two routers have the same broadcast SSID albeit on separate channels.
Issue:
All devices in my house, laptops tablets, phones roam between the two wi-fi zones seamlessly *except* the iPhone 6 (iOS8.1), this works on the cable modem wi-fi - but not on the X3500 wi-fi. I also have an iPad Mini 2 (also iOS8.1) which also works - so rightly / wrongly I've ruled out iO8.1 as the issue. Oddly the iPhone 6 connects to the x3500 but doesn't obtain an IP address (the cable modem is the DHCP server). Even setting a static IP address doesn't help.
Observation(s):
If the X3500 is setup as a DHCP server, the iPhoen connects (and gets an IP address), but then the default gateway is incorrect (gatway is the IP address of the X3500 not the remote cable modem). I can't find anywhere to specify a default gateway in the setup.
Question
I'm beginning to think this is an issue with the iPhone 6 (knowing all other devices work correctly), but I just want to make sure I'm configuring the X3500 correctly. I'm specifically interested in the whether I'm using the right "Mode"ADSL / Ethernet. I've tried "Bridged Mode Only" (ADSL) and "Automatic DCHP Only" (Ethernet) but neither seem to resolve the issue that the iPhone 6 is having.
any suggestions on how to resolve / troubleshoot would be most welcomed.
Thanks!
Solved!
Go to Solution.

Yes, there's a way for you to override the IP Address. It is on Router Address under Network Setup on the Basic Setup tab. If I'm not mistaken, one end of the Ethernet cable should be connected to the regular Ethernet port of the cable modem and the other end to the cable port of the X3500.
But if it's just the iPhone that won't connect to the X3500, it might be okay to retain the current configuration of the router, but try adjusting the wireless security mode or set the wireless channel to 11 and observe what happens.

802.1X dyanmic VLAN assignment DHCP issue (Vista client)

I am labbing dynamic VLAN assignment and have run into a small problem. The switchport is succesfully changing to the new VLAN, but my test PC seems to get an IP address in the native data VLAN before being moved to the new dynamic assigned VLAN. So when the switch changes the VLAN the PC keeps its old IP address and nothing talks any more.
Is this a Vista issue? I thought all of these problems were just issues in XP? Do I need to tweak any interface dot1x timers?
(Cat3750 with 12.2.55 / ACS5.1. Everything else is running fine by the way.)

if i do a show run on the switchport the config hasnt changed, but i dont expect it to, as its not a permanent config change that you would want to be saved by a different admin user saving the config. You can see the debug report it is changing the VLAN:
Apr 19 09:22:56.263: %AUTHMGR-5-START: Starting 'dot1x' for client (0014.c209.896f) on Interface Gi1/0/19 AuditSessionID C0A8FE250000000900291476
Apr 19 09:22:58.604: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/19, changed state to up
Apr 19 09:22:59.560: %DOT1X-5-SUCCESS: Authentication successful for client (0014.c209.896f) on Interface Gi1/0/19 AuditSessionID
Apr 19 09:22:59.568: %AUTHMGR-5-VLANASSIGN: VLAN 12 assigned to Interface Gi1/0/19 AuditSessionID C0A8FE250000000900291476
Apr 19 09:22:59.585: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan12, changed state to up
Apr 19 09:23:00.307: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/19, changed state to up
Apr 19 09:23:00.315: %AUTHMGR-5-SUCCESS: Authorization succeeded for client (0014.c209.896f) on Interface Gi1/0/19 AuditSessionID C0A8FE250000000900291476
as well as checking with the show int switchport command and it is in v12 which is the dynamically assigned vlan
DHCP server is the cat3750 for all local VLANs

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