LAN Connections Drop WRT150N

Purchased and installed last Wednesday. Wired and wireless LAN connections have dropped twice since then. Can't access 192.168.1.1 at all, for example.
EasyLink shows message "Different Network Detected". Attempting to use dialogs fails, however, since the router isn't responding.
If I unplug the router, wait, and the restore power, LAN connectivity is restored.
Firmware is up-to-date.
I expect occasional situations like this, but the frequency is troublesome. Any suggestions?
Mark
Message Edited by tcrg311 on 12-15-2007 08:21 AM

I have just got this router yesterday. It did this right out of the box. After an hour or so the connection would just drop. For everything. Some other topic on this site suggested power surges for a similar problem. I moved my power supply to somewhere less crowded and have had continuous internet for about an hour now.
I'll let you know if it worked.
(Edited post for guideline compliance. Thanks!)
Message Edited by JOHNDOE_06 on 12-17-2007 07:15 AM

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I encounter a strange problem on several AP 1242 in version 12.4(25d)JA1 of a customer :
He has 10 autonomous AP covering a factory and is using them for laptop connectivity and TOIP with mainly 7921 Cisco Wifi Phones.
The phones are configured to use only 802.11a.
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AP1242-LOGIST#sh int fa0
FastEthernet0 is up, line protocol is up
Hardware is PowerPCElvis Ethernet, address is 001d.a1ce.26e2 (bia 001d.a1ce.26e2)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 100Mb/s, MII
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/160/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 81000 bits/sec, 53 packets/sec
5 minute output rate 29000 bits/sec, 26 packets/sec
     7447113 packets input, 674891974 bytes
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     0 input errors, 0 CRC, 0 frame, 0 overrun, 549631 ignored
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     4422100 packets output, 609868806 bytes, 0 underruns
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Here is a small part of logs concerning roaming, i don't see errors or log indicating that something is wrong nor in the switches log :
Jun 6 12:57:27.007: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP001E4A3EE15D 001e.4a3e.e15d Associated KEY_MGMT[WPAv2 PSK]
Jun 6 12:57:42.499: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP588D09D3A92B 588d.09d3.a92b Reassociated KEY_MGMT[WPAv2 PSK]
Jun 6 12:58:02.620: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 588d.09d3.a92b Reason: Sending station has left the BSS
Jun 6 12:58:03.653: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP588D09D3A92B 588d.09d3.a92b Reassociated KEY_MGMT[WPAv2 PSK]
Jun 6 12:59:15.564: %DOT11-6-ROAMED: Station 588d.09d3.a92b Roamed to 001e.134c.5a50
Jun 6 12:59:15.564: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 588d.09d3.a92b Reason: Sending station has left the BSS
Jun 6 12:59:41.905: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 442b.0355.ab28 Reason: Previous authentication no longer valid
Jun 6 12:59:54.728: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP442B0355AB28 442b.0355.ab28 Associated KEY_MGMT[WPAv2 PSK]
Jun 6 13:01:12.541: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP588D09D3A92B 588d.09d3.a92b Reassociated KEY_MGMT[WPAv2 PSK]
Jun 6 13:02:35.841: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 001e.4a3e.d875 Reason: Previous authentication no longer valid
Jun 6 13:02:36.489: %DOT11-6-ASSOC: Interface Dot11Radio0, Station   ec85.2f7c.c837 Associated KEY_MGMT[WPAv2 PSK]
Jun 6 13:03:29.256: %DOT11-6-ROAMED: Station 588d.09d3.a92b Roamed to 001e.134c.5a50
Jun 6 13:03:29.256: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 588d.09d3.a92b Reason: Sending station has left the BSS
Jun 6 13:04:32.754: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP001E4A3ED875 001e.4a3e.d875 Associated KEY_MGMT[WPAv2 PSK]
Jun 6 13:06:47.858: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 001e.4a3e.e15d Reason: Previous authentication no longer valid
Jun 6 13:07:18.107: %DOT11-6-ROAMED: Station 001f.6c7a.5101 Roamed to 001d.a2bb.15b0
Jun 6 13:07:18.107: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 001f.6c7a.5101 Reason: Sending station has left the BSS
Jun 6 13:07:38.109: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP588D09D3A92B 588d.09d3.a92b Reassociated KEY_MGMT[WPAv2 PSK]
Jun 6 13:07:42.031: %DOT11-6-ROAMED: Station 588d.09d3.a92b Roamed to 001e.134c.5a50
Jun 6 13:07:42.031: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 588d.09d3.a92b Reason: Sending station has left the BSS
Jun 6 13:07:46.489: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP001F6C7A5101 001f.6c7a.5101 Reassociated KEY_MGMT[WPAv2 PSK]
Jun 6 13:08:27.712: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP588D09D3A92B 588d.09d3.a92b Reassociated KEY_MGMT[WPAv2 PSK]
Jun 6 13:08:44.502: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 588d.09d3.a92b Reason: Sending station has left the BSS
Jun 6 13:08:44.572: %DOT11-6-ASSOC: Interface Dot11Radio1, Station SEP588D09D3A92B 588d.09d3.a92b Associated KEY_MGMT[WPAv2 PSK]
Jun 6 13:08:56.778: %DOT11-6-ROAMED: Station 588d.09d3.a92b Roamed to 001e.134c.5a50
Jun 6 13:08:56.779: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 588d.09d3.a92b Reason: Sending station has left the BSS
Jun 6 13:09:17.874: %DOT11-6-ROAMED: Station 001f.6c7a.5101 Roamed to 003a.9a92.8d70
Jun 6 13:09:17.874: %DOT11-6-DISASSOC: Interface Dot11Radio1, Deauthenticating Station 001f.6c7a.5101 Reason: Sending station has left the BSS
The AP are configured as follow :
Current configuration : 5184 bytes
! No configuration change since last restart
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname AP1242-LOGIST
logging rate-limit console 9
aaa new-model
aaa authentication login default local
aaa authorization exec default local
aaa session-id common
clock timezone gmt+1 1
clock summer-time gmt recurring last Sun Mar 2:00 last Sun Oct 3:00
dot11 syslog
dot11 vlan-name Data vlan 11
dot11 vlan-name Voix vlan 14
dot11 vlan-name Webguest vlan 5
dot11 ssid WLAN_data
   vlan 11
   authentication open
   authentication key-management wpa
   mbssid guest-mode
   wpa-psk ascii 7 10600C0E261B173C252203797479633F371A29
dot11 ssid WLAN_voice
   vlan 14
   authentication open
   authentication key-management wpa
   mbssid guest-mode
   wpa-psk ascii 7 080F49592A1500203B2D25567A7A7622263C0C
dot11 ssid Webguest
   vlan 5
   authentication open
   mbssid guest-mode
dot11 wpa handshake timeout 1000
dot11 arp-cache
dot11 priority-map avvid
dot11 phone
power inline negotiation prestandard source
class-map match-all _class_voice0
match ip dscp ef
class-map match-all _class_voice1
match ip dscp cs3
policy-map voice
class _class_voice0
set cos 6
class _class_voice1
set cos 3
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
encryption vlan 11 mode ciphers aes-ccm
encryption vlan 14 mode ciphers aes-ccm
ssid WLAN_data
ssid WLAN_voice
ssid Webguest
mbssid
power client 17
channel 2472
station-role root
dot11 qos class voice local
    admission-control
    admit-traffic narrowband max-channel 75 roam-channel 6
dot11 qos class voice cell
    admission-control
no cdp enable
infrastructure-client
interface Dot11Radio0.5
encapsulation dot1Q 5
no ip route-cache
no cdp enable
bridge-group 5
bridge-group 5 subscriber-loop-control
bridge-group 5 block-unknown-source
no bridge-group 5 source-learning
no bridge-group 5 unicast-flooding
bridge-group 5 spanning-disabled
interface Dot11Radio0.11
encapsulation dot1Q 11
no ip route-cache
no cdp enable
bridge-group 11
bridge-group 11 subscriber-loop-control
bridge-group 11 block-unknown-source
no bridge-group 11 source-learning
no bridge-group 11 unicast-flooding
bridge-group 11 spanning-disabled
interface Dot11Radio0.14
encapsulation dot1Q 14
no ip route-cache
no cdp enable
bridge-group 14
bridge-group 14 subscriber-loop-control
bridge-group 14 block-unknown-source
no bridge-group 14 source-learning
no bridge-group 14 unicast-flooding
bridge-group 14 spanning-disabled
interface Dot11Radio1
no ip address
no ip route-cache
encryption vlan 11 mode ciphers aes-ccm
encryption vlan 14 mode ciphers aes-ccm
ssid WLAN_data
ssid WLAN_voice
ssid Webguest
no dfs band block
mbssid
channel dfs
station-role root
interface Dot11Radio1.5
encapsulation dot1Q 5
no ip route-cache
no cdp enable
bridge-group 5
bridge-group 5 subscriber-loop-control
bridge-group 5 block-unknown-source
no bridge-group 5 source-learning
no bridge-group 5 unicast-flooding
bridge-group 5 spanning-disabled
interface Dot11Radio1.11
encapsulation dot1Q 11
no ip route-cache
no cdp enable
bridge-group 11
bridge-group 11 subscriber-loop-control
bridge-group 11 block-unknown-source
no bridge-group 11 source-learning
no bridge-group 11 unicast-flooding
bridge-group 11 spanning-disabled
interface Dot11Radio1.14
encapsulation dot1Q 14
no ip route-cache
no cdp enable
bridge-group 14
bridge-group 14 subscriber-loop-control
bridge-group 14 block-unknown-source
no bridge-group 14 source-learning
no bridge-group 14 unicast-flooding
bridge-group 14 spanning-disabled
interface FastEthernet0
no ip address
no ip route-cache
speed 100
full-duplex
no cdp enable
hold-queue 160 in
interface FastEthernet0.1
encapsulation dot1Q 1 native
no ip route-cache
no cdp enable
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
interface FastEthernet0.5
encapsulation dot1Q 5
no ip route-cache
no cdp enable
bridge-group 5
no bridge-group 5 source-learning
bridge-group 5 spanning-disabled
interface FastEthernet0.11
encapsulation dot1Q 11
no ip route-cache
no cdp enable
bridge-group 11
no bridge-group 11 source-learning
bridge-group 11 spanning-disabled
interface FastEthernet0.14
encapsulation dot1Q 14
no ip route-cache
no cdp enable
bridge-group 14
no bridge-group 14 source-learning
bridge-group 14 spanning-disabled
service-policy input voice
service-policy output voice
interface BVI1
ip address 10.17.10.5 255.255.255.0
no ip route-cache
ip default-gateway 10.17.10.254
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
logging trap warnings
logging 10.15.51.115
no cdp run
bridge 1 route ip
line con 0
line vty 0 4
sntp server 10.15.1.50
sntp broadcast client
end
Does someone ever experienced a similar problem ?
When I shut radio interfaces they're is no more problems on the LAN. Can this be an overlapping coverage issue ?
Can someone please give me advices on how to troubleshoot this issue ?
Thank you in advance as I'm a bit stuck.
Best Regards,

     Hi Scott,
Thanks for your reply.
Do you think this can be the origin of the issue my customer encounters or is it only to be standard ? As this change will have to be made on all clients, if there is a chance it solves the problem I will do it ASAP, if not I will delay it in a less busy period :-)
Can the constant roaming associations and dissasociations overload the AP and make it stop responding on the LAN or is it only a throuhput problem ?
Thanks in advance for your answer.
Best Regards,

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As has been document probably hundreds of times in these forums, Macbook Pros (my model) and some other Macs have had this issue from either 10.7.2 or 10.7.3 (I've got 10.7.4 right now). I'm glad you found a solution to your problem, but for the hundreds or thousands of us who've had this problem since last August with no solution from Apple, it's quite frustrating. I know it's not politically correct to blame the computer when it's been given a defective upgrade with Lion, but let's call it what it is. I'll side with the numbers. Either a sudden batch of defective routers showed up from Taiwan, and a group of late 2008 and 2009 Macbook Pros bought them all en masse, or it's the software.
So if you still have problems after you get a clear signal, start sending messages to Apple to get it fixed for all of us. I bring this up for you as an alternative, as I noticed you were running 10.7.3, and the problems started somewhere around 10.7.2 or 10.7.3. Something to keep an eye on.

Network/Internet Connection Drops

I've been having this for a long while (>6 months) but it hasn't bugged me too much until now.
Symptoms: Network/internet connection just goes away.
When: After about 5-30 minutes that the computer is on (maybe longer sometimes).
Activity: Anything to nothing. Sometimes it's been idle for hours and it just doesn't connect.
Recovery: Reboot works every time. Any amount of fiddling with the network connections fails. Looking at the system preferences shows the connection is still valid. If I change locations, nothing happens. If I try to ping my router, time-out.
I'm thinking it has to be related to an update some time ago as I don't have much 3rd party stuff in the mix. Running straight LAN connection to Linksys using static IP.
Yes I know the Linksys and my cable modem are fine as the other 3 computers that I have experience no interruptions.
This is starting to get very annoying.

Ok - long-shot here...
I recently started having problems with my macbook pro dropping internet (connected via Airport to TC). My iMac (also connected via airport to TC) had no issues.
I run 2 wifi networks using TC, a 'full-up' network and a guest (internet only) network. So I tried switching to the internet only network - hey presto! no probs...
So what is different between the 2 networks - well, I had started messing about with Back to Mac and remote login/file sharing between the laptop and imac. Although I had given up trying to make it all work, it was clearly trying to establish connectivity in the background, thus presumably interfering with the connection for internet that I was using actively on the laptop.
After turning all file/screen sharing and back to mac off the problem was resolved. Luckily I am still able to access my TC as network storage between both my imac and laptop and I have moved back to my 'full up' wifi network......touch wood, problem resolved.

Stumped about constant connection drops

I just upgraded from 18 mbs to 45 and have had nothing but continuous connection drops. Seems like every 15 to 20 minutes, often after a period of inactivity, the wired connection just disconnects. I am as frustrated as I could possibly be. We ditched the Uverse TV because of an abundance of issues and now I'm ready to kick this NVG 589 gateway down the street, too. My info is below. Typically, I'm good while working on the computer, then dead in the water when I'm not. I see dozens of other members with this same issue and no luck as far on how to get around it. Line 1 Line 2 Downstream Upstream Downstream UpstreamLine StateUpUpDownstream Sync Rate (kbps)2761527615Upstream Sync Rate (kbps)30403040Downstream Max Attainable Rate (kbps)6240061492Upstream Max Attainable Rate (kbps)1279011234ModulationVDSL2VDSL2Data PathInterleavedInterleavedSN Margin (dB)24.026.223.821.7Line Attenuation (dB)18.412.718.311.7Output Power(dBm)14.5-10.114.5-10.6Errored Seconds0001Loss of Signal0000Loss of Frame0000FEC Errors00014CRC Errors0001; 2015-07-18T21:45:53-04:00 L4 mcp[520]: mcp[handle_timers]: group (0xE00000FC) timer expired - dropping membership
2015-07-18T21:45:53-04:00 L4 mcp[520]: mcp[handle_timers]: group (0xE00000FC) has stale rep/src entries C0A80141 00000000 0000BEEF
2015-07-18T21:48:10-04:00 L3 sdb[332]: ELAN: Port lan-2 is UP. (eth1) speed 100 duplex half
2015-07-18T22:18:58-04:00 L3 sdb[332]: ELAN: Port lan-2 (eth1) is DOWN
2015-07-18T22:19:01-04:00 L3 sdb[332]: ELAN: Port lan-2 is UP. (eth1) speed 10 duplex full
2015-07-18T22:19:09-04:00 L3 sdb[332]: ELAN: Port lan-2 (eth1) is DOWN
2015-07-18T22:23:20-04:00 L4 mcp[520]: mcp[handle_timers]: group (0xE00000FC) timer expired - dropping membership
2015-07-18T22:23:20-04:00 L4 mcp[520]: mcp[handle_timers]: group (0xE00000FC) has stale rep/src entries C0A80141 00000000 0000BEEF
2015-07-18T22:46:55-04:00 L3 sdb[332]: Wi-Fi: Client 8c:29:37:0d:49:47 left Ling Sis
2015-07-18T22:46:55-04:00 L3 sdb[332]: Wi-Fi: Number of clients associated 7
2015-07-18T23:01:31-04:00 L3 sdb[332]: Wi-Fi: 8c:29:37:0d:49:47 re-joined Ling Sis after 0 d 0 h 14 m 36 seconds
2015-07-18T23:01:31-04:00 L3 sdb[332]: Wi-Fi: Number of clients associated 8
2015-07-18T23:01:32-04:00 L3 dnsmasq[594]: no responses from nameserver '68.94.157.11'
2015-07-18T23:01:32-04:00 L3 dnsmasq[594]: nameserver '68.94.157.11' is now responding

I just upgraded from 18 mbs to 45 and have had nothing but continuous connection drops. Seems like every 15 to 20 minutes, often after a period of inactivity, the wired connection just disconnects. I am as frustrated as I could possibly be. We ditched the Uverse TV because of an abundance of issues and now I'm ready to kick this NVG 589 gateway down the street, too. My info is below. Typically, I'm good while working on the computer, then dead in the water when I'm not. I see dozens of other members with this same issue and no luck as far on how to get around it. Line 1 Line 2 Downstream Upstream Downstream UpstreamLine StateUpUpDownstream Sync Rate (kbps)2761527615Upstream Sync Rate (kbps)30403040Downstream Max Attainable Rate (kbps)6240061492Upstream Max Attainable Rate (kbps)1279011234ModulationVDSL2VDSL2Data PathInterleavedInterleavedSN Margin (dB)24.026.223.821.7Line Attenuation (dB)18.412.718.311.7Output Power(dBm)14.5-10.114.5-10.6Errored Seconds0001Loss of Signal0000Loss of Frame0000FEC Errors00014CRC Errors0001; 2015-07-18T21:45:53-04:00 L4 mcp[520]: mcp[handle_timers]: group (0xE00000FC) timer expired - dropping membership
2015-07-18T21:45:53-04:00 L4 mcp[520]: mcp[handle_timers]: group (0xE00000FC) has stale rep/src entries C0A80141 00000000 0000BEEF
2015-07-18T21:48:10-04:00 L3 sdb[332]: ELAN: Port lan-2 is UP. (eth1) speed 100 duplex half
2015-07-18T22:18:58-04:00 L3 sdb[332]: ELAN: Port lan-2 (eth1) is DOWN
2015-07-18T22:19:01-04:00 L3 sdb[332]: ELAN: Port lan-2 is UP. (eth1) speed 10 duplex full
2015-07-18T22:19:09-04:00 L3 sdb[332]: ELAN: Port lan-2 (eth1) is DOWN
2015-07-18T22:23:20-04:00 L4 mcp[520]: mcp[handle_timers]: group (0xE00000FC) timer expired - dropping membership
2015-07-18T22:23:20-04:00 L4 mcp[520]: mcp[handle_timers]: group (0xE00000FC) has stale rep/src entries C0A80141 00000000 0000BEEF
2015-07-18T22:46:55-04:00 L3 sdb[332]: Wi-Fi: Client 8c:29:37:0d:49:47 left Ling Sis
2015-07-18T22:46:55-04:00 L3 sdb[332]: Wi-Fi: Number of clients associated 7
2015-07-18T23:01:31-04:00 L3 sdb[332]: Wi-Fi: 8c:29:37:0d:49:47 re-joined Ling Sis after 0 d 0 h 14 m 36 seconds
2015-07-18T23:01:31-04:00 L3 sdb[332]: Wi-Fi: Number of clients associated 8
2015-07-18T23:01:32-04:00 L3 dnsmasq[594]: no responses from nameserver '68.94.157.11'
2015-07-18T23:01:32-04:00 L3 dnsmasq[594]: nameserver '68.94.157.11' is now responding

Lost LAN Connection in MS Exchange 2003 network

Hi everybody.
I have a connection problem which my ICT consultant can't solve or even figure out the cause.
In my company there's a MS Exchange 2003 network. I'm the only one running a Mac (Air bought in early 2011), as the others need to work on Solidworks and need Win machines. In order to connect with email and calendar I'm forced to use Parallels Desktop with Win7 installed to use Outlook and Access for our Internal Self made database.
What is happening is that sometimes when connected through WiFi the server connection is lost, causing loss of work if I had some files open from the server.
Considering that we have some interferences in our area I got the USB Ethernet adapter.
Worse than ****.
When cable connected the connection to server is lost every minute, not only if the Mac goes to sleep, but even during normal work. Unless I "stimulate" the finder every 30 seconds the server connection get lost, sometimes is sufficient to click on the saved preferred positions in the side bar to wake it up, but most of the times if I'm working on files on the server this is not sufficient and the job done is lost.
Also this sometime cause a major failure in the system and I'm forced to shut down the Mac by holding the button.
Any clues?
Thanks

Thanks for the help on making restore points, and on getting Boot Camp 2.1; I recently updated Apple Software Update to 2.1.1, so that's working, and it did suggest BC 2.1 as a downloadable. I'll probably do it manually, though, just to be on the safe side of things, as I don't trust Software Update even in OS X for most things (except to tell me what updates are available; I usually download and install everything manually anyway). Windows Update is a different matter, as I can't get most of the patches it offers by myself (not that I haven't tried--most are available only through the utility).
As for backing up and restoring from a clone on a second hard drive: I can't afford to do that at the moment, as I can't afford the hardware, software, or time needed to prepare a clone backup. And besides, as I said before, I don't do enough in the Windows partition that demands such backup work be done. I use Vista primarily for things I can't do in OS X, with Windows-specific apps.
Still not sure how to go about updating the LAN port driver, or if it even needs to be updated. If BC 2.1 doesn't do it, I'll look up the vendor through whatever link Windows Update provides for me. And I haven't received any word from Verizon about my modem needing a firmware update, but then again I haven't contacted them about it yet, and I'm not sure I need to, or if it really needs to be updated. I'm just hoping that if the connection drops again that it won't be necessary to update or replace the modem, that the problem remains in software. (Of course, I'll take whatever precautionary measures I can, but I can only do so much myself.)

LAN Connections Drop WRT150N

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