2008 Unibody MacBook dropping WiFi

Question

I posted this on MacRumors but no one was able to help me so I was wondering if the wonderful Apple community could help.
Hey Guys,
I have a 2008 unibody MacBook running OSX 10.8.3 that has a bit of a strange issue with the wireless.
I have recently acquired a Meraki MR12 Wireless Access Point and 3 year cloud controller license. This has replaced my Airport Extreme as my main access point purely for the stats and information that you can get from the cloud controller.
Since the change I have been having some issues with my network where the wireless icon shows that you are connected to the network and you can ping some key IP addressed
192.168.1.1 - Firewall / Gateway
192.168.1.2 - Airport Extreme (Time Machine only)
8.8.8.8 - Google DNS
This is telling me there is some connectivity, but if you try to do anything on the network that requires application traffic nothing gets through. For example loading a web page in Chrome or Safari fails, dropbox looses its √ from the icon(lost connectivity) and time machine cannot find the disk (although you can ping the airport)
If you turn the wireless on and off again then you get your connectivity back for a while sometimes it can be 10 mins others its 3 hours before the drops.I have seen on some forums that you have to force your WAP to use WPA2-PSK rather than WPA and WPA2 as this can confuse the clients.
This is a summary as to how I have my SSIDs setup
[IMG]http://i.imgur.com/6OUQ4Gr.png[/IMG]
I have setup a secondary SSID for testing as it is not affecting my flatmates laptop and have managed to find the optimal settings are no encryption with Meraki RADIUS authentication. Obviously this is not ideal so to add a little level of security I have hidden the test SSID.
I have tried everything to try and get my mac working on the main SSID
SMC & PRAM reset
New Network profile
reset network settings to factory defaults
I have made a quick youtube video to demonstrate the issue, I hope I have blanked out any details that anyone could use to take advantage of my network.
[url]http://www.youtube.com/watch?v=S-RVRV5nvfg[/url]
The WAP is plugged into the PoE port on my ASA 5505 Firewall/Gateway I have no Vlan trunking setup yet and the ASA provides DHCP.
This is the interface configuration for the ASA I have omitd alot of the conf file as it is either irrelivent or provides to much information.
The AP is plugged into eth 0/7 and the Airport in 0/1 No other client is affected but they are all non osx (iPhone, Win 7, Ubuntu, openWRT.)
[code]
interface Ethernet0/0
description physical connection to O2 Box IV
switchport access vlan 2
interface Ethernet0/1
switchport trunk allowed vlan 1
switchport trunk native vlan 1
switchport mode trunk
interface Ethernet0/2
switchport trunk allowed vlan 1
switchport trunk native vlan 1
switchport mode trunk
shutdown
interface Ethernet0/3
shutdown
interface Ethernet0/4
switchport trunk allowed vlan 1-3
shutdown
interface Ethernet0/5
shutdown
interface Ethernet0/6
shutdown
interface Ethernet0/7
switchport trunk allowed vlan 1,3
switchport trunk native vlan 1
switchport mode trunk
interface Vlan1
description to inside VLAN
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0
interface Vlan2
description to outside interface (DHCP O2 Modem)
nameif outside
security-level 0
ip address xxx.xxx.xxx.xxx 255.255.254.0
[/code]

Answer 1

Ok so I have been doing some more reading and have spotted loads of posts on the apple discussions and on here that are showing similar issues but on SL rather than Mountain Lion.
I have gone through most of the troubleshooting steps they have outlined in there and none of it has worked.
First was to try and telnet to Google.com to see if it is just chrome or the whole OS that is not working.
This failed as expected
[code]
localhost:~ mattwarrillow$ telnet google.com 80
Trying 173.194.41.142...
telnet: connect to address 173.194.41.142: Operation timed out
Trying 173.194.41.133...
telnet: connect to address 173.194.41.133: Operation timed out
Trying 173.194.41.131...
telnet: connect to address 173.194.41.131: Operation timed out
[/code]
Can ping google DNS just fine
[code]
localhost:~ mattwarrillow$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: icmp_seq=0 ttl=49 time=37.826 ms
64 bytes from 8.8.8.8: icmp_seq=1 ttl=49 time=38.933 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=49 time=38.094 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 37.826/38.284/38.933/0.472 ms[/code]
Cant see anything squiffy in the routing table
[code]
localhost:~ mattwarrillow$ netstat -rn
Routing tables
Internet:
Destination        Gateway            Flags        Refs      Use   Netif Expire
default            192.168.1.1        UGSc           17      169     en1
127                127.0.0.1          UCS             0        0     lo0
127.0.0.1          127.0.0.1          UH              5    36127     lo0
169.254            link#5             UCS             0        0     en1
192.168.1          link#5             UCS             4        0     en1
192.168.1.1        0:23:4:c8:2e:11    UHLWIir        18       24     en1   1107
192.168.1.4        0:1:d2:7:30:65     UHLWIi          0        0     en1   1129
192.168.1.10       127.0.0.1          UHS             1        0     lo0
192.168.1.254      0:c:30:42:15:c0    UHLWIi          0       16     en1   1185
192.168.1.255      ff:ff:ff:ff:ff:ff  UHLWbI          0        3     en1
Internet6:
Destination                             Gateway                         Flags         Netif Expire
::1                                     link#1                          UHL             lo0
fe80::%lo0/64                           fe80::1%lo0                     UcI             lo0
fe80::1%lo0                             link#1                          UHLI            lo0
fe80::%en0/64                           link#4                          UCI             en0
fe80::%en1/64                           link#5                          UCI             en1
fe80::225:ff:fe46:5fc1%en1              0:25:0:46:5f:c1                 UHLI            lo0
fe80::bac7:5dff:fec7:9a65%en1           b8:c7:5d:c7:9a:65               UHLWIi          en1
ff01::%lo0/32                           fe80::1%lo0                     UmCI            lo0
ff01::%en0/32                           link#4                          UmCI            en0
ff01::%en1/32                           link#5                          UmCI            en1
ff02::%lo0/32                           fe80::1%lo0                     UmCI            lo0
ff02::%en0/32                           link#4                          UmCI            en0
ff02::%en1/32                           link#5                          UmCI            en1
ff02::fb%en1                            link#5                          UHmW3I          en1   1416
localhost:~ mattwarrillow$
[/code]
DNS Lookup appears to be working as Ping will resolve hostnames just fine but for some reason Dig failes
[code]
localhost:~ mattwarrillow$ dig google.com
; <<>> DiG 9.8.3-P1 <<>> google.com
;; global options: +cmd
;; connection timed out; no servers could be reached
localhost:~ mattwarrillow$
localhost:~ mattwarrillow$ ping currys.co.uk
PING currys.co.uk (77.75.51.29): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
^C
--- currys.co.uk ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
[/code]  (Note Currys website doesnt ping even if you are connected and working fine.)
I even tried restarting mDNS and clearing the DNS Cache but that made no difference
[code]
localhost:~ mattwarrillow$ sudo dscacheutil -flushcache
Password:
localhost:~ mattwarrillow$ sudo killall mDNSResponder[/code]
I haven't checked with the airport utility to generate a fault report. But I did do another packat capture and I can see the AP has been spamming my macbook with ARP requests.
The only thing that I forgot to do while the wireless was broken was to run the wireless diagnostics.