WAP551 stops passing DHCP

Hello
I have 4 WAP551s at one of our sites, and I have discovered a problem whereby they stop distributing/passing through DHCP addresses to clients. This happens roughly every 2 days, at which point I simply reboot them all and magically the clients get addresses again and everything is OK for another couple of days.
I don't think it's the DHCP server (Win 2012 R2) since it still gives out addresses on wired clients when this problem occurs.
I have upgraded them all to the latest firmware and tried running them in a cluster (single point setup mode) and separately with the same SSID. Problem occurs in both modes.
If I give my wireless interface a static IP, I get full network access, so I don't think there's any routing/switch config issues.
Any ideas please? They're under warranty but I have no Cisco technical support contract. I could try get them all replaced but it seems unlikely to be a hardware fault with all 4.

Sadly this issue is not resolved. I am on site today and could not get an IP address when trying to connect to the wireless network. This was affecting 2 of the 4 WAPs on the site. The one I normally have the issue with is working OK.
I then plugged directly in to the LAN but still couldn't get an IP address so I suspected a DHCP server issue or rogue DHCP server on the LAN. I stopped the DHCP service on my server and did not get an IP address, so I don't think there is a rogue.
I started the DHCP service and still couldn't get an IP address (wireless or wired). I then opened the DHCP console and noticed the server address was '169.254.x.x'! Never seen this before, so did a quick bit of research and this led me to disable all the NICs not in use on the server and restart the service again. This seemed to fix the issue and the server name came back up in DHCP instead of the 169 address.
I could then get IP addresses on the wired connection only.
I could not get IP addresses on wireless until I restarted (pulled the plug) the 2 WAPs.
Really puzzled with this one but it seems as though everything could be a knock-on effect of an issue with the DHCP server.
Anyone come across similar behaviour before? Although I don't suspect an issue with the switches, I will post the config here anyway (please see attachment). Maybe someone will spot something strange in there.
You will see the interface that the DHCP server and WAPs are connected to in the interface descriptions.

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Switch port in dot1x multi-auth mode stops passing traffic

Dear All,
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interface GigabitEthernet2/34
switchport mode access
ip arp inspection limit rate 30
authentication host-mode multi-auth
authentication port-control auto
authentication periodic
authentication timer reauthenticate server
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end
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E1200 stops serving DHCP all of a Sudden (affects both wireless and wired)

Greetings All,
I have a 2 year E1200 router that has given me very good service uptil now. Now, it appears to suddenly stop serving DHCP at least once daily. This results in a situation where all my devices (3 over wifi, 2 directly wired) suddenly all cannot talk over the local LAN or reach the Internet (WAN).
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Hi,
If you have time, you can try to perform a hardware reset on your E1200 then reconfigure it back manually. Since you are running on the latest firmware, there's no need to reflash that. You might still have the same issue if there's really a problem from your gateway.
If everyone needs to believe in something, I believe I'll have another beer..

AP 1231G Not Passing DHCP to clients

Hello My company AP 1231G is not passing the DHCP address to the client from the DHCP server can you please advise on my config listed below
basicly the AP is on its own VLAN 10.1.123.1 and the DHCP server is 10.1.10.2 -- trying to use iphelper to pass DHCP to clients and the AP is on static IP 10.1.123.2--
! Last configuration change at 13:15:56 +0800 Fri May 25 2012 by root
! NVRAM config last updated at 13:15:56 +0800 Fri May 25 2012 by root
version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname XXXXXXXXXX
clock timezone +0800 8
ip subnet-zero
no ip domain lookup
ip domain name XXXXXXXXXXXXX
aaa new-model
aaa authentication login default local
aaa authorization exec default local
aaa session-id common
dot11 syslog
dot11 ssid XXXXXXXXXX
   authentication open
   authentication key-management wpa
   guest-mode
   infrastructure-ssid optional
   wpa-psk ascii XXXXXXXXXXXXXXXXXXXXXXX
dot11 arp-cache optional
username root privilege 15 password XXXXXXXXXXXXXXXXXXXXX
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
encryption mode ciphers aes-ccm tkip
ssid XXXXXXXXXXX
speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0 54.0
no preamble-short
channel 2432
station-role root access-point
no dot11 extension aironet
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface FastEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
interface BVI1
ip address 10.1.123.2 255.255.255.0
ip helper-address 10.1.10.2
ip default-gateway 10.1.123.1
ip http server
ip http authentication aaa
no ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
access-list 111 permit tcp any any neq telnet
snmp-server view dot11view ieee802dot11 included
snmp-server view ieee802dot11 ieee802dot11 included
snmp-server community public RO
snmp-server community private view undefined RW
bridge 1 route ip
line con 0
terminal-type teletype
line vty 0 4
terminal-type teletype
sntp server 114.80.81.13
sntp broadcast client
end

Roan:
Where is your DHCP server configured (swtich, firewall, 3rd party server..etc)?
Does it work correctly if the AP IP on same subnet and ip-helper is not being utilized?

1 port on 2960 wont pass DHCP onto client

I am stumped on this one. I have a PoE 2960 that connects a few phone/workstation pairs to the network. All of them work correctly except for one...
For example, the good / working configs look like this on the interfaces:
interface GigabitEthernet1/0/45
description _X211
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
And.....
interface GigabitEthernet1/0/38
description _X208
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
The port that is not passing DHCP info onto the client is this one:
interface GigabitEthernet1/0/12
description _X209
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
What am I missing? This worked fine until last week when this site was connected via a trunk to another site (they used to connect via IPSec tunnel, but now have a dedicate link). As far as I can tell, that should not have effected this...and if it did effect this why didn't it effect any of the other ports?
The complete show run:
Building configuration...
Current configuration : 10102 bytes
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname ...
boot-start-marker
boot-end-marker
no logging console
enable secret 5 ...
enable password 7 ...
no aaa new-model
clock timezone EST -5
switch 1 provision ws-c2960s-48lpd-l
ip name-server 10.1.0.10
ip name-server 10.0.0.10
vtp domain ...
vtp mode transparent
mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 2 4
mls qos srr-queue output cos-map queue 4 threshold 2 1
mls qos srr-queue output cos-map queue 4 threshold 3 0
mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47
mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31
mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55
mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63
mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23
mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39
mls qos srr-queue output dscp-map queue 4 threshold 1 8
mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15
mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7
mls qos queue-set output 1 threshold 1 138 138 92 138
mls qos queue-set output 1 threshold 2 138 138 92 400
mls qos queue-set output 1 threshold 3 36 77 100 318
mls qos queue-set output 1 threshold 4 20 50 67 400
mls qos queue-set output 2 threshold 1 149 149 100 149
mls qos queue-set output 2 threshold 2 118 118 100 235
mls qos queue-set output 2 threshold 3 41 68 100 272
mls qos queue-set output 2 threshold 4 42 72 100 242
mls qos queue-set output 1 buffers 10 10 26 54
mls qos queue-set output 2 buffers 16 6 17 61
mls qos
spanning-tree mode pvst
spanning-tree extend system-id
vlan internal allocation policy ascending
vlan 8,16,21,48,52,100-101,104,112,120,128,500,900,999
interface Port-channel1
description ...
switchport access vlan 500
interface FastEthernet0
no ip address
interface GigabitEthernet1/0/1
description PHONE_x204
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/2
description PHONE_x212
switchport access vlan 16
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/3
description voice vlan 52
switchport access vlan 16
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/4
description RUCKUS_WAP
switchport trunk native vlan 104
switchport mode trunk
interface GigabitEthernet1/0/5
switchport mode trunk
interface GigabitEthernet1/0/6
description PHONE_x205
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/7
switchport access vlan 16
interface GigabitEthernet1/0/8
switchport access vlan 21
switchport mode access
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
spanning-tree portfast
interface GigabitEthernet1/0/9
description PHONE_x206
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/10
switchport access vlan 16
interface GigabitEthernet1/0/11
switchport access vlan 16
interface GigabitEthernet1/0/12
description ..._X209
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/13
description PHONE_x208
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/14
description HP_OFFICEJET_PRO_8600
switchport access vlan 21
switchport mode access
interface GigabitEthernet1/0/15
switchport access vlan 16
interface GigabitEthernet1/0/16
description PHONE_x203
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/17
switchport access vlan 16
interface GigabitEthernet1/0/18
description PHONE_x202
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/19
switchport access vlan 16
interface GigabitEthernet1/0/20
switchport access vlan 16
interface GigabitEthernet1/0/21
switchport access vlan 16
interface GigabitEthernet1/0/22
description ..._X212
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/23
switchport access vlan 16
interface GigabitEthernet1/0/24
switchport access vlan 16
interface GigabitEthernet1/0/25
switchport access vlan 16
interface GigabitEthernet1/0/26
switchport access vlan 16
interface GigabitEthernet1/0/27
switchport access vlan 500
channel-group 1 mode on
interface GigabitEthernet1/0/28
switchport access vlan 16
interface GigabitEthernet1/0/29
switchport access vlan 500
channel-group 1 mode on
interface GigabitEthernet1/0/30
switchport access vlan 16
interface GigabitEthernet1/0/31
description SNAPBACK
switchport access vlan 500
interface GigabitEthernet1/0/32
switchport access vlan 16
interface GigabitEthernet1/0/33
switchport access vlan 16
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/34
switchport access vlan 16
interface GigabitEthernet1/0/35
description PHONE_x201
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/36
description PRINTER__OFFICES
switchport access vlan 21
interface GigabitEthernet1/0/37
switchport access vlan 16
interface GigabitEthernet1/0/38
description ..._X208
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/39
switchport access vlan 16
interface GigabitEthernet1/0/40
switchport access vlan 16
interface GigabitEthernet1/0/41
switchport access vlan 16
interface GigabitEthernet1/0/42
description CARD_ACCESS_SYSTEM
switchport access vlan 48
interface GigabitEthernet1/0/43
description SIP_PHONE
switchport access vlan 52
interface GigabitEthernet1/0/44
description PANASONIC_PHONE
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/45
description TECH_TBD_PHONE_X211
switchport trunk native vlan 16
switchport mode trunk
switchport voice vlan 52
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
auto qos voip trust
spanning-tree portfast
interface GigabitEthernet1/0/46
switchport access vlan 16
switchport mode access
interface GigabitEthernet1/0/47
description RUCKUS_WAP
switchport trunk native vlan 104
switchport mode trunk
interface GigabitEthernet1/0/48
description site-to-site-link
switchport mode trunk
interface GigabitEthernet1/0/49
interface GigabitEthernet1/0/50
interface TenGigabitEthernet1/0/1
interface TenGigabitEthernet1/0/2
interface Vlan1
ip address 10.0.1.254 255.255.255.0
interface Vlan48
ip address 10.0.48.254 255.255.255.0
interface Vlan52
ip address 10.0.52.254 255.255.255.0
interface Vlan101
ip address 10.0.101.254 255.255.255.0
interface Vlan128
no ip address
interface Vlan500
ip address 10.1.0.7 255.255.255.128 secondary
ip address 10.0.0.126 255.255.255.128
ip default-gateway 10.0.101.1
no ip http server
no ip http secure-server
logging 10.1.0.10
banner login ^CC
UNAUTHORIZED LOGIN PROHIBITED
^C
line con 0
exec-timeout 15 0
password 7 ...
logging synchronous
login
line vty 0 4
exec-timeout 15 0
password 7 ...
logging synchronous
login
length 0
line vty 5 15
exec-timeout 15 0
password 7 ...
logging synchronous
login
ntp clock-period 22519016
ntp server 198.60.73.8
end

I removed the line:
switchport trunk native vlan 16
From that port, but I am still not receiving DHCP info on the client.
As a workaround I have set a static IP on the phone. I am still unable to get the workstation (in this case a laptop) to get on the network even setting a static address. I put it onto the wireless for now to get them up and running.
This is quite odd. Any idea what I could try to adjust on that port?

5505 stops passing traffic with 9.1.3

I have a 5505 setup in my home office. It generally works well but I noticed when I upgraded it to 9.1.2.8 it would stop passing traffic after a few days. I figured this was just the interim release blues and waited until 9.1.3 came out. However, with 9.1.3 the problem is even worse. I'm actually not exactly sure what's going on. Here's what I've noticed:
I get a lot of DNS connections with the "h" flag (H.225 traffic) set. This seems like it might have some relation to the problem:
UDP outside 216.218.130.2:53 inside 192.168.234.146:50705, idle 0:00:18, bytes 534, flags h
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When traffic stops passing, the ASA itself can no longer get to the Internet. I can't ping my Comcast router (actually in my office, L2 adjacent to ASA). I also have some SLA probes going to the Internet which fail. If I do a clear conn all, then everything starts working again for a while. The BTF (dynamic-filter) feature seems to make it worse. If I remove it (remove dynamic-filter-snoop part) then it takes a lot longer before it stops passing traffic:
policy-map global_policy
class inspection_default
inspect dns dns-ipm dynamic-filter-snoop
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Ideas?

I have a 5505 setup in my home office. It generally works well but I noticed when I upgraded it to 9.1.2.8 it would stop passing traffic after a few days. I figured this was just the interim release blues and waited until 9.1.3 came out. However, with 9.1.3 the problem is even worse. I'm actually not exactly sure what's going on. Here's what I've noticed:
I get a lot of DNS connections with the "h" flag (H.225 traffic) set. This seems like it might have some relation to the problem:
UDP outside 216.218.130.2:53 inside 192.168.234.146:50705, idle 0:00:18, bytes 534, flags h
I also get these in 9.1.2 (which works fine), but far fewer. When traffic stops passing on my ASA, I notice that I have tons of these connections in 9.1.3.
When traffic stops passing, the ASA itself can no longer get to the Internet. I can't ping my Comcast router (actually in my office, L2 adjacent to ASA). I also have some SLA probes going to the Internet which fail. If I do a clear conn all, then everything starts working again for a while. The BTF (dynamic-filter) feature seems to make it worse. If I remove it (remove dynamic-filter-snoop part) then it takes a lot longer before it stops passing traffic:
policy-map global_policy
class inspection_default
inspect dns dns-ipm dynamic-filter-snoop
What's really strange, is even if I remove all service-policy commands, I still get connections with the "h" flag. I don't believe that should be possible so perhaps a bug?
Ideas?

Logic stops passing audio after a few hours

Here's the setup:
iMac G5 1.9Ghz, MOTU 828mkII, Logic Express, 10.4.4 (i think)
I am using logic to process audio for a theatrical production. I am using two channels in and two out. The problem is, when a track has been record enabled for a long time (several hours to a day or so) it stops passing audio. Ideally I would like to just leave it as is for the run of the show (about a week) but currently the tracks need to be rearmed before each show. Is this a normal limitation in logic?
The only thing I can think of is that it might be caused when the screen goes to sleep (although it doesn't happen every time, only when I come in the next day.) I do not want to leave the screen on for a week straight if I don't have to. Any ideas?

If you've had it less tha 90 days, contact Apple support. If you have Applecare, you can talk with them for up to 3 years, but hopefully that's not needed. In the US call 800-275-2273.

Wifi stops passing traffic on original ipad and ipad 2 running ios 5.0.1

I actually just started having this issue with my Original iPad and my iPad 2. From what I'm seeing is not a loss of signal but a loss of connectivity, they just stop passing traffic. When this is happening its sometimes to both iPads but not always. And both our iPhones do not experience the issue while the iPads are having the problem. (all devices running ios 5 and connected to the same AP). Wired devices also do not have any issues wile this is happening to the iPads.
What I have tried so far:
1. Changing Channels on the AP to a less congested channel (didn't help)
2. Shutting wifi off on ipad, then turning back on, solves issue for a random amount of time, then it happens again
3. Rebooting ipad, sometimes does not help at all until you turn off the radio on the ipad, then back on
I was ready to get a new router/ap but after reading some other comments, this may be an issue with other people.

I have exactly the same issue on my brand new iPad2 running iOS5.
I have also changed the channel, tried different settings, etc. to no avail.
It tends to happen when streaming video - Skype, YouTube. Also during movie downloads.
My pc does not have this problem.
We're you able to find a reliable solution?
Thanks!

Bridged router doesn't pass DHCP request

(I've posted this request on other networking boards. Hoping the Macmaniacs can help!)
I have three wireless routers configured using the same SSID. Two of the routers are bridged off the main one and act simply as wireless access points. This allows me to wander around my house and always get a strong signal. The bridged routers have their DHCP turned off. I've found that when I try to access the LAN from my laptop after it's gone to asleep, I occasionally end up with just a self-appointed IP address and no amount of turning off Airport or renewing the DHCP gets me a new address. I have to turn off Airport, go to a spot where I'm fairly close to the main router, get an IP address assigned, and then I'm fine until it refreshes the DHCP, at which point I'm hosed. Anything I should look out for in terms of router settings? As it turns out, all three routers are from different manufacturers: D-Link, NetGear, and ActionTec (the latter being the default device you get with Verizon FIOS and it's the "main" router in my network). I've tried manually designating just the address; fully configuring every option manually (subnet mask, router, etc.); just leaving it with auto DHCP--no change. I've also even made the IP address static from the router. Any thoughts?

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WET200-WET200 Bridge not passing DHCP Requests

Hi,
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Firmware is currently the latest.
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Thanks
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Mr. Muir,
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I would try this on both devices and let us know if your still having the same issue.

Expander passes DHCP info but no internet

I have a SMC 7908VOWBR router and 2 WRE54G range expanders (a v.1 and a v.3). The v.1 has been working fine with the router but has a different SSID than the router. The new v.3 must have the same SSID as the router so that's what I did. I use WEP
The router shows both expanders as connected through WDS. Both the V.1 and the v.3 show two blue connection lights but when I connect any of the laptops through the V.3, I get an ip address and a gateway (router IP) from the router but that's it.
After the ip address has been obtained, I can ping as far as the v.3 (10.0.0.12) but not further. When I connect straight to the router (10.0.0.3) I can't ping the V.3 and vice versa. There must be a connection because I get an ip address through the V.3
The V.1 does everything fine and the only difference is a different SSID.
Any ideas? It frustrates the hell out of me.

Thanks for the advice but I flashed the firmware (even before starting the thread) without result. I do have an update on my first message. It is different than what I initially thought.
When I plug the expander in the power socket, everything works fine for about 5 minutes (DHCP, ping to router, internet and all)
After this time, the connection between the router and the expander stops. A ping to the router fails and DHCP doesn't work anymore. The expander still shows 2 blue lights and the router show the expander as connected through WDS but nothing seems to work.
Basically, the connection between router and expander lasts for about 5 minutes.

WLC not pass DHCP past bridged units

I have a WLC 5508 with LWAP 1242 with wireless bridges connected to the APs I cannot get DHCP to pass through the bridge to the PC connected to the bridge.

Some third-party WGBs need to operate in non-DHCP relay mode. If problems occur with the DHCP assignment on devices behind the non-Cisco WGB, use the following commands:
–config dhcp proxy disable
–config dhcp proxy disable bootp-broadcast disable
The default state is DHCP proxy enabled.
the above commands introduced from 7.0.116.0.

Random Services Stopping (DNS, DHCP, SMB, etc)

Hello,
I have been trying to wrap my head around this, but we have a single Xserve 10.5.4 and it runs the the majority of the services here in the office, like DNS, DHCP, AFP, SMB, Web, Software Update, Open Directory, and more. The problem I've been having is that over the weekend some of these services just stopped. Not all of them, and in the most recent case SMB, DNS, DHCP, and Software Updates stopped. The server was up the whole weekend, people were in the office saturday working just fine but not on sunday. So where do I even begin to look on this? Some other things you might want to know is that we are dealing with an internal packet loss issue due to cabling, we have been troubleshooting out various bad lines in this office and preparing to have these lines repaired, but to be honest, I can't see how packet loss would cause services to stop on this machine. What do you think?

Oct 6 15:42:59 server com.apple.AppleFileServer[93]: MDSChannelPeerCreate: (os/kern) invalid argument
Oct 6 15:44:01 server kernel[0]: 192.168.2.1 sent from address 00:17:f2:92:fa:81
Oct 6 15:44:01 server kernel[0]: en1 duplicate IP address 192.168.2.1 sent from address 00:17:f2:92:fa:81
Oct 6 15:44:19: --- last message repeated 53 times ---
Oct 6 15:44:19 server kernel[0]: t from address 00:17:f2:92:fa:81
Oct 6 15:44:19 server kernel[0]: en1 duplicate IP address 192.168.2.1 sent from address 00:17:f2:92:fa:81
Oct 6 15:44:49: --- last message repeated 9 times ---
This is what shows up in the log. I have not seen this in the log before as I have been digging through it to troubleshoot the issues here (I'm new to this company and have been trying to wrap my head around their issues)
I checked into where that MAC address belongs and I have found that it belongs to the server itself, which seems strange that it's reporting that the duplicate IP is being sent from the server that's reporting this error, it shouldn't be reporting itself as a duplicate correct? I feel like I'm reading that wrong, but in looking there are no DNS errors like the ones you mentioned. I turned up the log reporting for DNS to be more verbose, hopefully that will turn something up.
Thank you for responding so quickly.

Passing DHCP through L2tpv3

Dear,
we have two routers CISCO881-K9 and we have established l2tpv3 pesuduwire between two routers
P2P Ip addrsses done over the WAN port f4 while the xconnect over the LAN port f0.
Although the l2tp established but we are unable to pass the DHCP from router A to router- B.
any help.
regards

use ip helper-address on the interface of the stations needing to use dhcp.

Access Points Not Passing DHCP to Clients

I have a 50+ access point deployment, all in a single VLAN (DMZ), across a dozen buildings. We recently experienced wierdness of the following sort. Clients would request DHCP request, DHCP servers would forward requests, which would not get passed from the AP to the clients. We could verify that DHCP and all other parts of network were fine. I had to cold boot each AP to clear the condition. I could find nothing in this mix of 350s and 1200s or the spectrum that would indicate an obvious attack... Couldn't find where to start looking for any tables that were full, or any real place to look for some other reason for this. Yet after cold boot- all is well.
Any thoughts, in case it happens again?

Hi Guys,
I am having a similar problem to you, however i can get authentciated via LEAP, but dont seem to get an IP adderss from the radius server.
My setup is very simple as i am at the design stage. We have a Cisco AP 1200 (2.4 and 5.0 GHZ) and we are using FUNK steel belted RADIUS server. LEAP authentication works fine and i can see the association on the AP. The wirless client (HP W400 integrated Wireless cards) shows that it has been authenticated successfully too. However no IP is being received. We have a IP Pool configured on the SBR server and the SBR server shows that it has issued an IP address.
Next step was to place a sniffer and capture the packets. The capture shows the radius requests and challenges and in the very last ACCEPT packet we can see that the SBR has issued an IP address.
I am confused as i cant see anything on AP that would block the IP address. There are also a few attributes showing as "unknown" in the sniffer trace, so im not too sure wgats going on.
Can anyone help. The IOS is 12.2 (13) JA

WAP551 stops passing DHCP

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