Airport express regular latency spikes [Logs&details inside]

Discussion in 'Mac Accessories' started by Austin00, Nov 7, 2012.

  1. Austin00, Nov 7, 2012
    Last edited: Nov 7, 2012

    Austin00 macrumors member

    Joined:
    Feb 10, 2010
    #1
    Hi all,

    I've been scouring the web and these forums for a similar issue, but must not have phrased it correctly, or simply no-one has spoken about it yet but i'm having a problem with my new Airport Express.

    I shall try to be as accommodating to anyone on here that will help so please ask if i can provide any more info to help diagnose the problem.

    Here's the setup i'm using:
    Virgin Media Fibre Modem ===> Airport express WAN port

    Airport Express (1) 3rd Gen LAN port ===> TP-Link Switch
    Airport Express (1) 3rd Gen WiFi ===> Another Airport express, rMBP, 2x iPhones, 1x iPad

    Airport Express (2) 2nd Gen WiFi ===> Extending AE(1) WiFi
    Airport Express (2) 2nd Gen LAN ===> PS3

    TP-Link ethernet Switch ===> Synology NAS DS212j
    TP-Link ethernet Switch ===> Windows PC

    Problem I'm having
    When PC is connected via AE switch, I get lag spikes. I have pinged google for a few mins and get varied results showing this spiking effect
    Graph of latency from pinging google repeatedly LINK
    This was over approximately a 20-25min period.

    What I've tried and hasn't worked
    - Connecting the PC to the airport express (avoiding the switch)
    - Changing Ethernet Cables
    - Power cycling the modem, AE and PC.
    - Restoring AE to default settings and setting up again
    - Connecting PC directly to modem

    What I havent tried yet
    - Changing the new AE

    I'll include my logs for the past few hours to show what the AE has been upto.

    The tests I've done, prove that it is the new AE causing this lag, but i cant seem to understand why.

    If anyone can help diagnose what is going on I'd be really appreciative...

    Thanks,
    Austin
     
  2. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #2
    You should remove that log. It contains quite a bit of your personal details.
     
  3. Austin00 thread starter macrumors member

    Joined:
    Feb 10, 2010
    #3
    Thanks.

    What information should i omit? I do think that "reassociating with (MAC address of AE)" shouldn't be happening soon after "WAN port connection dropped"
     
  4. Intell macrumors P6

    Intell

    Joined:
    Jan 24, 2010
    Location:
    Inside
    #4
    Omit IP addresses that do not start with 169 or 192, MAC addresses, and ports.
     
  5. AppleMacFinder macrumors 6502a

    AppleMacFinder

    Joined:
    Dec 7, 2009
    #5
    Maybe there is interference with some other Wi-Fi networks, or even some radars.
     
  6. Austin00 thread starter macrumors member

    Joined:
    Feb 10, 2010
    #6
    Hi,

    Thanks for posting. I've put in the OP that i'm experiencing this problem over LAN so wireless interference shouldn't have anywhere near that effect. Also the problem is not continuous, its heavy at regular intervals.

    Thanks,
    Austin
     
  7. Austin00 thread starter macrumors member

    Joined:
    Feb 10, 2010
    #7
    Small bump.

    I have exchanged the AE for a new one and I'm still experiencing this problem.
    I will post edited logs without IP addresses and MAC addresses shortly.

    Austin
     
  8. Austin00 thread starter macrumors member

    Joined:
    Feb 10, 2010
    #8
    As promised:

    Here are my AE logs. Anything within ** ** tags has been replaced by me

    Jan 1 00:00:07 5 Initialized (firmware 7.6.2).
    Jan 1 00:00:17 5 Deauthenticating with station ff:ff:ff:ff:ff:ff (reserved 3).
    Jan 1 00:00:17 5 Deauthenticating with station ff:ff:ff:ff:ff:ff (reserved 2).
    Jan 1 00:00:20 5 (WAN) link state is Up.
    Jan 1 00:00:28 5 (WAN) link state is Down.
    Jan 1 00:01:14 5 (WAN) link state is Up.
    Jan 1 00:02:00 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%eth0]:52171.
    Jan 1 00:02:17 3 No Address for NTP server time.apple.com.
    Jan 1 00:03:32 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%eth0]:52994.
    Jan 1 00:03:32 5 unloading current configuration.
    Jan 1 01:03:51 5 Deauthenticating with station ff:ff:ff:ff:ff:ff (reserved 3).
    Jan 1 01:03:52 5 Deauthenticating with station ff:ff:ff:ff:ff:ff (reserved 2).
    Jan 1 01:03:52 5 Rotated CCMP group key.
    Jan 1 01:03:55 5 (WAN) link state is Up.
    Jan 1 01:05:23 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%eth0]:53083.
    Jan 1 01:05:50 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%eth0]:53091.
    Jan 1 01:05:50 5 unloading current configuration.
    Jan 1 01:06:09 5 Deauthenticating with station ff:ff:ff:ff:ff:ff (reserved 3).
    Jan 1 01:06:09 5 Deauthenticating with station ff:ff:ff:ff:ff:ff (reserved 2).
    Jan 1 01:06:09 5 Rotated CCMP group key.
    Jan 1 01:06:12 5 (WAN) link state is Up.
    Jan 1 01:08:08 3 No Address for NTP server time.apple.com.
    Jan 1 01:08:42 5 (WAN) link state is Down.
    Jan 1 01:10:24 3 No Address for NTP server time.apple.com.
    Jan 1 01:12:16 5 (WAN) link state is Up.
    Jan 1 01:12:33 5 (WAN) link state is Down.
    Jan 1 01:12:35 5 (WAN) link state is Up.
    Jan 1 01:12:39 3 No Address for NTP server time.apple.com.
    Jan 1 01:12:45 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:53299.
    Jan 1 01:12:51 5 Internet configuration leased [IPv4] -- host <192.168.100.2/255.255.255.0> gateway <192.168.100.1> dns <> wins <> lease <30> domain <>
    Jan 1 01:13:23 5 Internet configuration leased [IPv4] -- host <**MODEM PUBLIC IP**/255.255.252.0> gateway <213.104.64.1> dns <194.168.4.100 194.168.8.100> wins <> lease <3600> domain <cable.virginmedia
    Jan 1 01:13:24 5 Binding added for udp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Jan 1 01:13:24 5 Binding added for tcp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 17:10:31 5 Clock synchronized to network time server time.apple.com (adjusted +1352393826 seconds).
    Nov 8 17:10:32 5 Rotated CCMP group key.
    Nov 8 17:12:19 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:53710.
    Nov 8 17:12:38 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:53712.
    Nov 8 17:13:34 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:53729.
    Nov 8 17:13:36 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:53730.
    Nov 8 17:14:32 5 Associated with station **PC Wi-Fi MAC address**
    Nov 8 17:14:32 5 Installed unicast CCMP key for supplicant **PC Wi-Fi MAC address**
    Nov 8 17:14:50 5 Internet configuration leased [IPv4] -- host <**MODEM PUBLIC IP**/255.255.252.0> gateway <213.104.64.1> dns <194.168.4.100 194.168.8.100> wins <> lease <604800> domain <cable.virginmed
    Nov 8 17:15:48 5 Disassociated with station **PC Wi-Fi MAC address**
    Nov 8 17:15:48 5 Rotated CCMP group key.
    Nov 8 17:40:30 5 Binding added for udp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 17:40:30 5 Binding added for tcp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 18:10:30 5 Binding added for udp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 18:10:30 5 Binding added for tcp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 18:10:31 5 Clock synchronized to network time server time.apple.com (adjusted +0 seconds).
    Nov 8 18:10:32 5 Rotated CCMP group key.
    Nov 8 18:15:48 5 Rotated CCMP group key.
    Nov 8 18:40:31 5 Binding added for udp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 18:40:31 5 Binding added for tcp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 19:10:31 5 Binding added for udp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 19:10:31 5 Binding added for tcp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 19:10:31 5 Clock synchronized to network time server time.apple.com (adjusted +0 seconds).
    Nov 8 19:10:32 5 Rotated CCMP group key.
    Nov 8 19:15:48 5 Rotated CCMP group key.
    Nov 8 19:40:32 5 Binding added for udp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 19:40:32 5 Binding added for tcp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 20:10:32 5 Binding added for udp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 20:10:32 5 Binding added for tcp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 20:10:32 5 Clock synchronized to network time server time.apple.com (adjusted -1 seconds).
    Nov 8 20:10:32 5 Rotated CCMP group key.
    Nov 8 20:15:48 5 Rotated CCMP group key.
    Nov 8 20:29:42 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:57011.
    Nov 8 20:29:47 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:57012.
    Nov 8 20:29:47 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:57013.
    Nov 8 20:29:53 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:57015.
    Nov 8 20:40:31 5 Binding added for udp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 20:40:31 5 Binding added for tcp, **MODEM PUBLIC IP**:43910 to 10.0.1.2:43910 with lifetime 3600
    Nov 8 20:51:50 5 Associated with station **Macbook Pro Wi-Fi MAC address**
    Nov 8 20:51:50 5 Installed unicast CCMP key for supplicant **Macbook Pro Wi-Fi MAC address**
    Nov 8 20:51:55 5 Binding added for udp, **MODEM PUBLIC IP**:32775 to 10.0.1.4:4500 with lifetime 7200
    Nov 8 20:51:55 5 Binding added for udp, **MODEM PUBLIC IP**:32776 to 10.0.1.4:5353 with lifetime 7200
    Nov 8 21:07:06 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:58403.
    Nov 8 21:07:10 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:58405.
    Nov 8 21:07:11 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:58406.
    Nov 8 21:07:13 5 Connection accepted from [**PC ETHERNET Link-Local IPv6 Address**%bridge0]:58407.
     
  9. JoeBlow74 macrumors regular

    Joined:
    Aug 2, 2012
    #9


    Let me guess, is your PC a Vista machine? If so, then yes, you will get big lag spikes. Every so many seconds, Vista sends out a ping to tell the router that the machine is still there and to keep transmitting. This is a well know issue with WIFI and Vista. Windows 7 fixed that issue. This is why I hardwired everything in my house.
     
  10. Austin00 thread starter macrumors member

    Joined:
    Feb 10, 2010
    #10
    Hi,

    I'm not using WiFi, or Vista. My PC is running an upto-date version of 7, and is connected to the network via Ethernet...

    Austin
     

Share This Page