Packet Loss on Xen and Coherence

We are currently experiencing packet loss issues with Coherence 3.4.2 during the datagram test.
Packet loss statistics are as follows:
Rx from publisher: /10.96.67.169:9999
elapsed: 149384ms
packet size: 1468
throughput: 66 MB/sec
46889 packets/sec
received: 7004519 of 8252377
missing: 1247858
success rate: 0.848788
out of order: 0
avg offset: 0
gaps: 535018
avg gap size: 2
avg gap time: 0ms
avg ack time: -1.0E-6ms; acks 0
The Coherence implementation is running on a Xen VM.
We see this happen for both Fully Virtual and Paravirtualized Guests.
This problem does not happen on physical hardware.
Here is the general sequence that we tried:
1. After finding the problem on coherence, we tried to simulate similar results on 2 HVM xen systems and we did not find the problem there.
        a. These boxes were HVM guests.
        b. Were running kernel 2.6.18-164 and redhat 5.4
        c. These guests were running on Dom-0 kernel of 2.6.18-164.2.1el5xen
2. We had 2 para virt machines on the same Dom-0 as above but they were redhat 5.2 so we ran the same test there and still we were running into problem.
3. We upgraded the para virt machines to redhat 5.4 with latest patch rev and still problem was present.
4. after this research found out that we need to disabled module ipv6 and that seems to fix the problem. After disabling IPv6 module ran some more tests between pl1rap704-beta and pl1rap706-beta. Results were performance improved but still packet loss.
5. We converted 2 para virt guests to HVM guests (pl1rap704-beta and pl1rap705-beta) and ran the tests it was still having problem.
6. Upgrade pl1rap704-beta and pl1rap705-beta to redhat release 5.4 and latest kernel rev and see if the problem is still there
We haven't tried this on Oracle VM, but think that would be the next step to see if the problem persists there, although Oracle support indicates that Coherence is not officially supported on Oracle VM.
We still see the packet loss issues and wonder if anyone has encountered this issue before and has a solution to it?

Just saw your post.
If still a problem.....send a PM to Heather_VZ she has been very helpful to many people on many subjects
Tom
Freedom Essentials, QIP 7100 1,Bose SOLO TV Sound System,,QIP 7216 P2,M1424WR Rev F, iPad 2 WiFi,iPhone 5,TV SYST INFO Release 1.9.5 Build No. 17.45
Data Object 39.45

Similar Messages

Packet Loss between ASA and 871

We are running a Cisco ASA 5505 and remote clients are 871's. We currently use a EasyVPN configuration between the single ASA and our 13 871's.
Today (1) out of the (13) tunnels is experiencing packet loss. I have power cycles the broadband router on the 871 end and the 871 and the situation still exists.
Does anyone know what would cause this and how to troubleshoot it?
Thanks,
Jason

Have you contact broadband provider on the 871 side to rule out any issues on the link? what broadband ADSLAM pppoa? start first rulling out physical issues WAN interface, LAN interface stats and work your way up, is this is something that suddenly developped? from what you post indicates it seems this tunnel have been fine, it could be broadband link issues but fist investigate with provider to go the next step.
what do you see in 871 router logs in terms of links, turn on logging informational before staring debugg proceedures.
HTH
Jorge

High Packet Loss, High Ping and Slow Connection Ov...

Hi There,
I have been a customer with the BT unlimited broadband package for a little under two years and up until recently have had no real issues with the service. This was until around 3/4 weeks ago I noticed that the internet was very slow and certain online games or applications like Netflix would lose all of its quality or stop completely. At first I thought nothing of it and simply reset my BT Home hub router, and sure enough everything was back to normal. However after around 2-3 hours of moderate use (gaming online or watching Netflix) the problem surfaced again.
Now I am lucky if I can get the entire way through a 40 minute TV episode before the quality drops and/or the service requires buffering. I have already contacted BT via the helpline and the service lady ran through the obligatory steps (turn off, wait 5 minutes, reset the home hub etc.) but she failed to understand that although rebooting the home hub does alleviate the problem initially, the symptoms of a slow connection, high packet loss and high ping always return within an hour.
Four the last couple of weeks I have been trying to investigate the problem myself and I have done the following things:
Tested the line using the master socket (no difference)
Opened the ports on my firewall within the home hub (no difference)
Directly wired in the computer instead of relying on the wifi (no difference)
Tested for interference from neighbours wifi using inSSIDider office (it wasn’t, operating on different channels)
Switched every device that requires internet off apart from the PC (no difference)
So with all that in mind I am fairly confident that it is nothing within my house that has caused a significant reduction in internet quality.
Now I have tried my best to display the problem I am having by recording the connection quality for the last 24 hours. The table below represents the condition and quality of the connection after leaving it a period of time without resetting:
ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
0 days, 21:52:14
Downstream:
12.96 Mbps
Upstream:
910 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
6.7 dB / 5.4 dB
Line attenuation (Down/Up):
29.4 dB / 16.4 dB
Output power (Down/Up):
20.4 dBm / 12.6 dBm
FEC Events (Down/Up):
987297 / 12745
CRC Events (Down/Up):
254 / 15268
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
2437 / 252630
Error Seconds (Local/Remote):
189 / 36430
And here is a result of the ping and packet loss during this time:
Now I immediately reset the home hub after running that test and ran the test again. These are the results I a achieved within 2 minutes of internet connectivity:
ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
0 days, 00:01:05
Downstream:
13.77 Mbps
Upstream:
910 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
6.4 dB / 5.6 dB
Line attenuation (Down/Up):
29.4 dB / 16.4 dB
Output power (Down/Up):
20.4 dBm / 12.6 dBm
FEC Events (Down/Up):
159 / 12746
CRC Events (Down/Up):
1 / 15573
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
0 / 252639
Error Seconds (Local/Remote):
1 / 36438
Even within the time it has taken to compose this page my internet quality has nose-dived from the previous result above to the following:
Connection Information
Line state:
Connected
Connection time:
0 days, 00:52:31
Downstream:
13.77 Mbps
Upstream:
910 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
6.1 dB / 5.4 dB
Line attenuation (Down/Up):
29.4 dB / 16.4 dB
Output power (Down/Up):
20.4 dBm / 12.6 dBm
FEC Events (Down/Up):
14544 / 12749
CRC Events (Down/Up):
14 / 15584
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
72 / 252647
Error Seconds (Local/Remote):
10 / 36449
What is causing this poor quality in connection and what can be done to rectify the problem?
Thank you for your response in advanced.
Regards,
Richard.

Thank you for you quick reply, I have just moved my hub to the master socket again and re-run the test and I seem to be getting the same results.
ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
0 days, 00:17:47
Downstream:
12.96 Mbps
Upstream:
910 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
6.0 dB / 5.2 dB
Line attenuation (Down/Up):
28.7 dB / 15.9 dB
Output power (Down/Up):
20.4 dBm / 12.6 dBm
FEC Events (Down/Up):
26417 / 5
CRC Events (Down/Up):
1 / 303
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
31 / 11
Error Seconds (Local/Remote):
10 / 36522
I have also checked if the bell wire was attached and it is not. My socket is of the new type with the inclusion of an inductor on the faceplate. My ADSL filters and modem cable already have the middle connecting pins removed so I don’t think it is a wiring problem, at least in my apartment anyway. I have also searched for problems with the exchange and they are showing green for my area. (Liverpool Central)
I have just rang the quiet line and I do not appear to have any noise on the line. However, all I have is a cordless phone and I know that is not ideal for determining noise due to the radio frequency interfering with the phone speaker.
Again thank you for you time on this issue.
Regards,
Richard

Wrt310n packet loss and dhcp failure?

I purchased a wrt310n to replace a netgear POS (which was a temp after my wrt54g died) and I'm having issues. The netgear is slow and temporarily freezes every once in a while. I put the wrt310n in and it worked flawlessly... for about a week. Now I'm getting packet loss between 10% and 20%. Also, after leaving the router running for a couple days (upside down, because it seemed to be freezing when it got hot) it would work for 5-10 minutes and then freeze. Power cycle the thing and... repeat.
I'm only using WEP, the machines have 802.11g cards, I've changed the network to 10.4.2.x (only the private side) and left almost everything else stock. The other things that have been changed are the admin password and logging has been enabled. My ISP is comcast cable. Suggestions? More info required? Anyone know how long 'til DD-WRT will work on these things?
ps-just so my skillset is known, i'm a sysadmin for a very large tech company and have been doing this type of role for over 8 years... that puts me slightly above the average home user... i think...
pps-mixed network of Linux and Windows machines
Message Edited by junk on 01-23-2008 06:47 PM

Nothing yet. I've switched back to my Netgear, for the time being. I'm hoping Linksys actually reads these forums and has a firmware update coming out soon. The Netgear works great until you hit something with a lot of jpgs (like myspace) and then it chokes for a couple minutes. I can deal with that until the first firmware update shows. Hopefully it's soon, since I hate having to box things up and send them back. I've read a few other posts about people having problems and they suggest doing a factory reset. I always change my network over to a 10.x.x.x subnet because I like to avoid common RFC1918 address spaces (geek/hacker issues). Perhaps it doesn't like dealing with class A address space...

Having really high pings, packet loss and been on ...

Hi. I've been on to BT 4-5 times in the last few weeks. Everytime its the same thing I do all their checks and run the speed test. Its the same thing over and over. When i try to explain to them the problems i,m having they said your speed is within the acceptable range. I,m at a loss with dealing with BT. The customer server is terrible.
Basically the problems i,m having is really high pings. Even doing the BTwholesale speedtest my pings was usally in the 30ms range now they are 70 on average now. I play alot of online games. And Everything is unplayable. I know there is definitely something wrong. Either with the routing or some of the nodes on bt.
Today I was trying to play Diablo 3, the lag spikes was huge every 2-3 seconds jumping to 1-2k ms latency. I ran some winMTR tests and i,m having alot of packet loss. I tried to explain that to BT on the phone. But its like the dont have a clue what i,m talking about or wont attempt to help me with the issue. All game companies usally tell me ISPs are always willing to help with these problems. But BT seem to refuse to help with latency ping issues, just your speed is fine etc .
I,ve also noticed people in the BT forums saying something about G.INP and people needing HH5 Type B. Can someone explain to me what this is or if its something happening to my cabinate. I,m using the BT HH5 type A. From what i see the about the G.INP sounds like the issues i,m currently facing.
Can some Mod please help me. I,m really losing hope with BT.

Hi Guys.
Still facing these issues. Is BT not going to do anything about it? Here is a WinMTR test to a game server i,m playing.
|------------------------------------------------------------------------------------------|
| WinMTR statistics |
| Host - % | Sent | Recv | Best | Avrg | Wrst | Last |
|------------------------------------------------|------|------|------|------|------|------|
| BTHUB5 - 0 | 1132 | 1132 | 0 | 0 | 10 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| 217.41.216.109 - 7 | 901 | 843 | 18 | 30 | 394 | 20 |
| 213.120.158.234 - 7 | 909 | 853 | 21 | 25 | 51 | 23 |
| 31.55.165.151 - 7 | 905 | 848 | 20 | 25 | 51 | 23 |
| 31.55.165.109 - 7 | 905 | 848 | 21 | 25 | 49 | 23 |
| 109.159.250.180 - 7 | 897 | 838 | 20 | 25 | 63 | 23 |
| core1-te0-13-0-16.ilford.ukcore.bt.net - 7 | 913 | 858 | 27 | 34 | 57 | 33 |
| peer6-0-9-0-22.telehouse.ukcore.bt.net - 6 | 917 | 863 | 27 | 32 | 56 | 32 |
| 166-49-211-240.eu.bt.net - 7 | 913 | 858 | 28 | 32 | 59 | 28 |
| 213.248.82.249 - 7 | 909 | 853 | 0 | 33 | 93 | 29 |
| ldn-bb2-link.telia.net - 7 | 909 | 853 | 28 | 36 | 127 | 70 |
| adm-bb4-link.telia.net - 7 | 909 | 853 | 32 | 37 | 76 | 34 |
| adm-b4-link.telia.net - 6 | 917 | 863 | 34 | 38 | 65 | 35 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 227 | 0 | 0 | 0 | 0 | 0 |
|________________________________________________|______|______|______|______|______|______|
217.41.216.109 seems to be an issue with this. Getting packet loss of 7% and the the ping shoots up to almost 400 while the average is around 30.
I,ve tried everything BT have told me, i've phoned loads and loads of times to seek help. I dont know what else to do. Pings and latency is horrible. And i dont just mean little lag. Every online game is unplayable. Webpage loading slowing or broken images .

Packet loss, full strength connection

So, just recently I have found that my connection to webpages times out. In firefox i will get the can't connect to site page, then i press try again and usually it works. When I use terminal and ping www.apple.com for example i will get ping times of 900ms and then maybe 80ms, after 15 pings i will get a report saying i have packet loss between 15 and 25%. Does anyone have any ideas why this is happening? It's totally out of the blue. I'm using a D-link DIR-625 wireless N router. I've never had these problems before. My Windows pc that is connected wirelessly to the router has no problems connecting to any pages.

May be a bit late, but I have found this tool to be helpful with diagnosing my wireless network faults :
AP Grapher - http://www.chimoosoft.com/
I have all sorts of problems with my wireless. Even things like someone opening the sliding door can cause my network to drop out. If as you say this is a recent problem, have you recently purchased cordless phones? Well check the tool and see if there is any noise coming across on the signal and try and work back from there.

Packet Loss frequently for a week?

Hello all, I am currently experiencing a massive amount of packet loss throughout various devices in my household. The main issues are with my SmartTV and the HuluPlus/HBO GO applications. After running my own tests, I have noticed that I am experiencing a whoping 38% packet loss to Hulu and HBO, and a regular 15% loss with any website on my PC and while gaming. Several hours with Verizon has not helped solve the issue and it is becoming increasingly frustrating. Anyone else experiencing this issue?

I would start by checking your local connection.
Run to speedtest.verizon.net
That will test your connection to the Verizon network.
Try and do it when you notice the issues.
If that doesn't give you the speed you are paying for, Verizon should be able to use that to help troubleshoot.
If it passes, that means it could be in Verizon network or farhter down the line.
If a forum member gives an answer you like, give them the Kudos they deserve. If a member gives you the answer to your question, mark the answer as Accepted Solution so others can see the solution to the problem.

IPhone - OSX 10.5.6 internet sharing via wifi has packet loss

I try to access the web on the iPhone (for testing purposes) via the bult-in internet sharing capability of my MacBookPro via WiFi. I get very slow connections and high packet loss on distances of less than a foot.
If I activate Internet sharing (eth0 - AirPort) I have packet loss of up to 80% on a Ping to the iPhone. This results in an unusable connection. In this case the iPhone gets a DHCP address from the DSL box (10.0.2.2). Pay attention to the HUGE standard deviation of the packets in case of the internet sharing!!
If anyone has config hints, I appreciate that very much. Does anyone know how to bridge en0 to Airport with WEP enabled?
Internet sharing activated:
--- 10.0.2.2 ping statistics ---
202 packets transmitted, 150 packets received, 25% packet loss
round-trip min/avg/max/stddev = 18.312/1768.538/8198.289/2201.202 ms
If I set up a Computer-Computer network with a WEP password I get no packet loss, but of course I cannot access the internet that way because there is no way in preferences to bridge the networks.
--- 169.254.246.154 ping statistics ---
443 packets transmitted, 442 packets received, 0% packet loss
round-trip min/avg/max/stddev = 1.441/1.983/57.068/2.691 ms
Internet Sharing (ifconfig):
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0 mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21b:63ff:fe92:d74%en0 prefixlen 64 scopeid 0x4
inet 192.168.0.17 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:1b:63:92:0d:74
media: autoselect (100baseTX <full-duplex,flow-control>) status: active
supported media: autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,hw-loopback> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,hw-loopback> 100baseTX <full-duplex,flow-control> 1000baseT <full-duplex> 1000baseT <full-duplex,hw-loopback> 1000baseT <full-duplex,flow-control> none
fw0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 4078
lladdr 00:1b:63:ff:fe:77:99:ac
media: autoselect <full-duplex> status: inactive
supported media: autoselect <full-duplex>
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21b:63ff:fec1:e75b%en1 prefixlen 64 scopeid 0x6
inet 169.254.149.180 netmask 0xffff0000 broadcast 169.254.255.255
inet 10.0.2.1 netmask 0xffffff00 broadcast 10.0.2.255
ether 00:1b:63:c1:e7:5b
media: autoselect status: active
supported media: autoselect
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21c:42ff:fe00:0%en2 prefixlen 64 scopeid 0x7
inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255
ether 00:1c:42:00:00:00
media: autoselect status: active
supported media: autoselect
en3: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21c:42ff:fe00:1%en3 prefixlen 64 scopeid 0x8
inet 169.254.149.180 netmask 0xffff0000 broadcast 169.254.255.255
ether 00:1c:42:00:00:01
media: autoselect status: active
supported media: autoselect
C-C Network:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0 mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21b:63ff:fe92:d74%en0 prefixlen 64 scopeid 0x4
inet 192.168.0.17 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:1b:63:92:0d:74
media: autoselect (100baseTX <full-duplex,flow-control>) status: active
supported media: autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,hw-loopback> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,hw-loopback> 100baseTX <full-duplex,flow-control> 1000baseT <full-duplex> 1000baseT <full-duplex,hw-loopback> 1000baseT <full-duplex,flow-control> none
fw0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 4078
lladdr 00:1b:63:ff:fe:77:99:ac
media: autoselect <full-duplex> status: inactive
supported media: autoselect <full-duplex>
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21b:63ff:fec1:e75b%en1 prefixlen 64 scopeid 0x6
inet 169.254.149.180 netmask 0xffff0000 broadcast 169.254.255.255
inet 10.0.2.1 netmask 0xffffff00 broadcast 10.0.2.255
ether 00:1b:63:c1:e7:5b
media: autoselect status: active
supported media: autoselect
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21c:42ff:fe00:0%en2 prefixlen 64 scopeid 0x7
inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255
ether 00:1c:42:00:00:00
media: autoselect status: active
supported media: autoselect
en3: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21c:42ff:fe00:1%en3 prefixlen 64 scopeid 0x8
inet 169.254.149.180 netmask 0xffff0000 broadcast 169.254.255.255
ether 00:1c:42:00:00:01
media: autoselect status: active
supported media: autoselect

I accidentally found a workaround:
1. Activate internet sharing
2. Goto network preferences and use AirPort: "Create network ..."
3. Check require Password and create a C2C network
4. The Airport Icon changes from the up-arrow to the computer icon
5. Connect with the iPhone.
Packet loss is gone and sharing works fine.
BIG BUG: Procedure has to be repeated every time AirPort is turned on/off, as Internet Sharing disables/resets the airport setup!

Packet loss / pausing when using 802.11N (Intel 6300)

Hi,
Previously, I had posted a thread involving the Intel 6250, and lack of detection of N WiFi on that card. Some time later, I bit the bullet and got an Intel 6300 card off eBay. After receiving it today, I popped it into my Thinkpad X220, and it worked.... sort of. I can definitely see wireless N support, and can associate with my 2.4 GHz mixed-mode B/G/N network at 130 Mbps, and my 5 GHz N-only router at around 243 - 270 Mbps. However, right off the bat, it seems the number of "Tx Excessive Retries" in iwconfig climb up to several thousand within ~ 15 - 20 minutes of connecting. Also right off the bat, pings are rather inconsistent (typically at least 2 ms greater than when the card is forced to work in G-only mode, and with pauses and spikes up to 800 - 2000 ms, and packet loss from 5 - 10%)
From what I have gathered so far, there has been a bug in the iwlwifi kernel tree that affects N wireless users, and this bug has been around since around 2010 or even earlier. However, I was under the impression that some sort of fix has been merged into the mainline Kernel at this point (I'm on 3.5.3-1-ARCH BTW), and my symptoms are somewhat less aggressive than the ones others described (basic web browsing works reasonably well, though there is often noticeable lag in the response times, but anything latency/packet loss-sensitive will suffer in a major way.) Has anyone managed to get wireless N to actually work reasonably well on Arch (or for that matter, ANY linux distro)? As I understand it, the matter is one of relation to the kernel module itself, so distro-distro variations of userspace apps shouldn't be as much a factor anyway. I am using WICD for my network manager, and am happy to say that it does its job admirably well (assuming the card is set to G-only mode, but the connection itself is actually maintained quite stably even in N mode.)
While I understand that the 11n_disable=1 "fix" allows most people to get on with their lives, I am rather alarmed that this is being considered a long-term solution. Many laptop owners (ThinkPad owners like myself for example) are essentially locked into Intel WiFi cards, unless we are willing to take an expensive risk and flash our BIOS to one that that doesn't have a "whitelist" of approved cards (something that can void the warranty or worse, brick a laptop.) All the while, Intel is still claiming Linux support for a card whose major capabilities are essentially neutered purely based on the OS a user chooses to run (yes, I do consider N to be a major capability, considering 300 Mbps N WiFi is basically old news, with many manufacturers coming out with full 450 Mbps routers. Also, chipsets like Atheros seem to have no problems with offering both performance and stability under Linux... my desktop rig using an Atheros card manages perfectly fine on a full-rate wireless-N network with essentially no packet loss or latency spikes.)
Below is some information that might be useful:
iwconfig (802.11g, ~ 1 hour after connection and running a few speedtests, browsing, ping testing):
wlan0 IEEE 802.11abg ESSID:"dd-wrt"
Mode:Managed Frequency:2.437 GHz Access Point: XXXXXX
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=69/70 Signal level=-41 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:359 Missed beacon:0
iwconfig (802.11n, 5GHz after ~10 minutes browsing/ping testing):
wlan0 IEEE 802.11abgn ESSID:"net2"
Mode:Managed Frequency:5.745 GHz Access Point: XXXXXX
Bit Rate=243 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=55/70 Signal level=-55 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:860 Invalid misc:50 Missed beacon:0
iwconfig (802.11n, 2.4 GHz after connecting and running a speedtest):
wlan0 IEEE 802.11abgn ESSID:"dd-wrt"
Mode:Managed Frequency:2.437 GHz Access Point: XXXXXX
Bit Rate=117 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=66/70 Signal level=-44 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:974 Invalid misc:59 Missed beacon:0
dmesg | grep iwl :
[12011.488089] iwlwifi: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[12011.488092] iwlwifi: Copyright(c) 2003-2012 Intel Corporation
[12011.488269] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
[12011.488271] iwlwifi 0000:03:00.0: pci_resource_base = ffffc900050f8000
[12011.488273] iwlwifi 0000:03:00.0: HW Revision ID = 0x35
[12011.488585] iwlwifi 0000:03:00.0: irq 50 for MSI/MSI-X
[12011.491862] iwlwifi 0000:03:00.0: loaded firmware version 9.221.4.1 build 25532
[12011.492112] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[12011.492114] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
[12011.492116] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[12011.492117] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TESTMODE enabled
[12011.492119] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_P2P disabled
[12011.492121] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Ultimate-N 6300 AGN, REV=0x74
[12011.492206] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12011.502925] iwlwifi 0000:03:00.0: device EEPROM VER=0x436, CALIB=0x6
[12011.502928] iwlwifi 0000:03:00.0: Device SKU: 0x1F0
[12011.502930] iwlwifi 0000:03:00.0: Valid Tx ant: 0x7, Valid Rx ant: 0x7
[12011.502946] iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[12011.503105] ieee80211 phy8: Selected rate control algorithm 'iwl-agn-rs'
[12011.503456] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12011.503661] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12011.745631] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12011.745868] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12073.651471] iwlwifi: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[12073.651474] iwlwifi: Copyright(c) 2003-2012 Intel Corporation
[12073.651660] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
[12073.651661] iwlwifi 0000:03:00.0: pci_resource_base = ffffc900050b8000
[12073.651663] iwlwifi 0000:03:00.0: HW Revision ID = 0x35
[12073.652241] iwlwifi 0000:03:00.0: irq 50 for MSI/MSI-X
[12073.655662] iwlwifi 0000:03:00.0: loaded firmware version 9.221.4.1 build 25532
[12073.655887] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[12073.655890] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
[12073.655891] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING enabled
[12073.655891] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TESTMODE enabled
[12073.655892] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_P2P disabled
[12073.655894] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Ultimate-N 6300 AGN, REV=0x74
[12073.655975] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12073.666587] iwlwifi 0000:03:00.0: device EEPROM VER=0x436, CALIB=0x6
[12073.666593] iwlwifi 0000:03:00.0: Device SKU: 0x1F0
[12073.666595] iwlwifi 0000:03:00.0: Valid Tx ant: 0x7, Valid Rx ant: 0x7
[12073.666618] iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
[12073.667056] ieee80211 phy9: Selected rate control algorithm 'iwl-agn-rs'
[12073.667456] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12073.667659] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12073.908411] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12073.908632] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12087.261869] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12087.262090] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12087.487757] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12087.488010] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12087.699574] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12087.699781] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12087.837322] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12087.837526] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12097.329577] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12097.329832] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12097.797748] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12097.797970] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12098.016220] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12098.016458] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12100.458762] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12100.459006] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12100.608769] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12100.609021] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12100.764093] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12100.764341] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12100.979029] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12100.979228] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
[12101.159987] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[12101.160208] iwlwifi 0000:03:00.0: Radio type=0x0-0x3-0x1
lshw | less :
*-network
description: Wireless interface
product: Centrino Ultimate-N 6300
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 35
serial: 00:24:d7:be:9e:74
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet phy
sical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.5.3-
1-ARCH firmware=9.221.4.1 build 25532 ip=192.168.1.145 latency=0 link=yes multic
ast=yes wireless=IEEE 802.11abgn
resources: irq:50 memory:f2500000-f2501fff
Thanks,
- A.G.

I have an ASUS UX32VD-DB71 which has the Intel Centrino 6235 wifi card. I've been having this laptop for more than 6 months and I've tried different solutions to fix the issue with Wireless-N but none of them were stable other than disabling N completely using 11n_disable=1
I've tried different kernels all the way from 3.2 to the latest 3.7 series of kernels (both in the openSUSE tree as well as mainline) with no luck whasoever. I also tried installing the compat-drivers from 2013-01-23-1-u version onto my 3.6 kernel which provided the same results too. I see packet loss with N and the G speeds are just too slow. I have a workstation in my network and I can only transfer effectively at 1.5 MB /s max over G whereas an old laptop from 2007 which has an 1x1 MIMO antenna (again Intel though) can connect at 144 Mbps to my router and transfer files at least 3-4 times faster (if not more).
It is totally unacceptable for Intel to not just fix this issue for Linux.
Last edited by Tuxdude (2013-02-17 01:38:59)

Intel 5100-5300 getting packet loss with a wrt 310n

Hi All
I have found a fix for this and it seems to work for me. Intel 5100 worked fine with a dlink but I always recieved packet loss with my wrt 310n
http://www.intel.com/support/wireless/wlan/sb/cs-006205.htm
Just though I would Hare it with the Community
Regards
Wall

I have an ASUS UX32VD-DB71 which has the Intel Centrino 6235 wifi card. I've been having this laptop for more than 6 months and I've tried different solutions to fix the issue with Wireless-N but none of them were stable other than disabling N completely using 11n_disable=1
I've tried different kernels all the way from 3.2 to the latest 3.7 series of kernels (both in the openSUSE tree as well as mainline) with no luck whasoever. I also tried installing the compat-drivers from 2013-01-23-1-u version onto my 3.6 kernel which provided the same results too. I see packet loss with N and the G speeds are just too slow. I have a workstation in my network and I can only transfer effectively at 1.5 MB /s max over G whereas an old laptop from 2007 which has an 1x1 MIMO antenna (again Intel though) can connect at 144 Mbps to my router and transfer files at least 3-4 times faster (if not more).
It is totally unacceptable for Intel to not just fix this issue for Linux.
Last edited by Tuxdude (2013-02-17 01:38:59)

Verizon Fios & NTT Packet loss/Slow Speeds..

Hello,
Recently there has been lot of packet loss between NTT and Verizon Fios.
mtr -rn 108.51.80.12x
HOST: localhost Loss% Snt Last Avg Best Wrst StDev
1.|-- 77.247.178.xxx 0.0% 10 0.4 0.4 0.3 1.2 0.3
2.|-- 85.159.239.6 0.0% 10 0.5 0.5 0.4 0.5 0.0
3.|-- 85.159.239.29 0.0% 10 0.9 0.9 0.6 2.4 0.5
4.|-- 81.20.64.113 0.0% 10 1.2 1.1 1.0 1.2 0.1
5.|-- 129.250.2.146 0.0% 10 1.3 1.3 0.8 3.9 1.0
6.|-- 129.250.2.144 0.0% 10 96.0 97.5 96.0 108.8 4.0
7.|-- 129.250.4.207 0.0% 10 92.6 92.7 92.5 93.0 0.1
8.|-- 129.250.8.38 0.0% 10 144.8 148.0 142.2 164.0 7.1
| `|-- 129.250.8.34
9.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
10.|-- 108.51.80.12x 10.0% 10 142.5 143.9 141.2 146.7 2.2
Anyone else having same issues? I tried contacting support but problem happens offten at night time and is fixed within 6 to 8 hours.
Thanks

Hi, wondering if you were ever able to resolve this or get any additional info from Verizon on it?
I have some customers on FIOS reporting problems to our ec2 servers. After some a couple nights of debugging I found your post and I have a set of remarkably similar mtr output (also have a similar trace to a 108.x.x.x FIOS endpoint):
HOST: ip-10-45-5-2xx Loss% Snt Last Avg Best Wrst StDev
1.|-- 100.104.104.1xx 0.0% 10 0.7 1.3 0.7 6.3 1.8
2.|-- 100.74.169.9 0.0% 10 0.4 0.5 0.4 0.7 0.1
3.|-- 100.74.169.24 0.0% 10 0.4 0.5 0.4 0.6 0.1
4.|-- 100.66.98.4 0.0% 10 0.4 0.4 0.3 0.5 0.0
5.|-- 100.66.3.190 0.0% 10 1.3 1.3 0.9 1.7 0.2
6.|-- 100.64.226.55 0.0% 10 1.0 1.4 0.9 2.2 0.4
7.|-- 100.64.225.182 0.0% 10 1.5 1.3 0.9 2.6 0.5
8.|-- 100.64.58.100 0.0% 10 0.4 1.2 0.3 5.6 1.8
9.|-- 100.64.13.89 0.0% 10 1.0 1.3 0.9 2.3 0.4
10.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
11.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
12.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
13.|-- 100.64.16.1 0.0% 10 0.5 1.4 0.4 7.6 2.2
14.|-- 205.251.245.43 0.0% 10 6.6 9.8 0.4 66.4 20.4
15.|-- 205.251.245.46 0.0% 10 0.7 0.9 0.7 1.1 0.1
16.|-- 205.251.245.0 0.0% 10 1.2 1.1 0.8 1.2 0.1
17.|-- 168.143.228.37 0.0% 10 1.4 1.4 1.4 1.5 0.0
18.|-- 129.250.8.38 0.0% 10 46.4 49.8 46.4 52.6 2.2
| `|-- 129.250.8.34
19.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
20.|-- 173.79.220.xxx 10.0% 10 63.1 59.8 53.7 63.1 2.9
Wondering how to proceed with Verizon, as you mention this only seems to occur during night-time hours, so it's a tricky issue to get support on. For us it means very slow (1mbps or less) transfer speeds between our servers and the FIOS customer, which is unacceptable.
-Tom

CRS-1 ping packet loss

Hi everyone,
CRS1 IOS-XR 3.8 when i try to ping packet option and got packet loss as below and don't sure that XR limit for ping or not?
RP/0/RP0/CPU0:#ping 10.0.0.1 size 3000 count 1000 (ping to outside switch 3750)
Mon Oct 8 10:12:34.582 THAI
Type escape sequence to abort.
Sending 1000, 3000-byte ICMP Echos to 10.0.0.1, timeout is 2 seconds:
if i user size 1500 don't have packet losss.
Can anyone explanation to me?
Thanks alot.
Kodos.

Hello,
Above result is PING from CRS-1 to another switch, we try to vary packet size and found that if its size greather than 2800 then we always get 4 packets loss from 1000.
Can you please advice?
Thanks,
Rojarek

Traceroute timeouts and lots of packet loss when a...

I host various site via the above, and since late last night and today, I am having connection timeout issues on all of them (but sites like bbc, bt etc are fine). I contacted them and performed a traceroute to my default site southee.co.uk which timed out. Below are the results:
traceroute to southee.co.uk (37.61.236.12), 64 hops max, 52 byte packets
1 bthomehub (192.168.1.254) 2.733 ms 2.414 ms 2.415 ms
2 esr5.manchester5.broadband.bt.net (217.47.67.144) 72.412 ms 29.705 ms 131.735 ms
3 217.47.67.13 (217.47.67.13) 31.390 ms 29.680 ms 103.936 ms
4 213.1.69.226 (213.1.69.226) 41.172 ms 32.700 ms 129.323 ms
5 31.55.165.103 (31.55.165.103) 30.791 ms 31.639 ms 130.306 ms
6 213.120.162.69 (213.120.162.69) 31.248 ms 59.138 ms 30.657 ms
7 31.55.165.109 (31.55.165.109) 32.159 ms 31.507 ms 31.513 ms
8 acc2-10gige-9-2-0.mr.21cn-ipp.bt.net (109.159.250.228) 31.499 ms 31.325 ms
acc2-10gige-0-2-0.mr.21cn-ipp.bt.net (109.159.250.194) 31.197 ms
9 core2-te0-12-0-1.ealing.ukcore.bt.net (109.159.250.147) 41.744 ms
core2-te0-13-0-0.ealing.ukcore.bt.net (109.159.250.139) 41.346 ms
core2-te0-5-0-1.ealing.ukcore.bt.net (109.159.250.145) 41.744 ms
10 peer1-xe3-3-1.telehouse.ukcore.bt.net (109.159.254.211) 39.527 ms
peer1-xe10-0-0.telehouse.ukcore.bt.net (109.159.254.122) 38.791 ms 38.910 ms
11 te2-3.sov-edge1.uk.timico.net (195.66.224.111) 54.032 ms 37.941 ms 38.642 ms
12 78-25-201-30.static.dsl.as8607.net (78.25.201.30) 45.830 ms 46.413 ms 42.448 ms
13 * * *
They then performed a traceroute from the server and got the following, again with timeouts and packet loss. See below:
1. 37.61.236.1 0.0% 10 0.5 0.7 0.4 2.9 0.8
2. ae0-2061.ndc-core1.uk.timico 0.0% 10 0.3 0.3 0.2 0.5 0.1
3. te2-3.sov-edge1.uk.timico.ne 0.0% 10 10.5 9.7 4.2 30.2 8.7
4. linx1.ukcore.bt.net 0.0% 10 4.1 4.3 4.1 5.9 0.6
5. host213-121-193-153.ukcore.b 0.0% 10 5.5 8.0 4.9 12.7 2.3
6. acc2-10GigE-4-3-1.mr.21cn-ip 0.0% 10 11.4 11.4 11.4 11.6 0.1
7. ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
8. 31.55.165.108 0.0% 10 12.1 12.1 11.8 12.4 0.2
9. 213.120.162.68 0.0% 10 12.0 12.1 12.0 12.3 0.1
10. ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
I've just spent a fustrating 15 minutes with Bt Support chat who just seemed want to pass me on to the BT Business team, so I thought I'd post here, for a more informed response.

Hi Jane, Thanks for the reply. I have now purchased an AEBS(n) to try to overcome this problem. The Apple site says it is compatible with all versions of Airport card so I thought it would solve the problem. My new problem is to be found here: http://discussions.apple.com/thread.jspa?threadID=1087292&tstart=0
However to answer your questions, The OS is 10.4.10 and I have run every updater I can find for all Macs concerned. hope this helps.

7613 Router - Packet-loss on a LAN link between 6704 and ES 2T

Hi
After connecting two ends of a 10 Gig LAN Link from a 6704 on one 7613 to a ES 2T on another 7613 , then we have packet loss on that link beyond a specific traffic limit !
Please note that after changing both boards to ES 2T we have no problem and LAN/WAN mode is also checked .

Ash wrote:
It's dropping pings, you can see that clearly from the above. It's intermittent. Whilst a drop in pings isn't the definitive sign of packetloss, the way in which it's doing it is.
If it was going to drop it through flooding it simply wouldn't respond at all after the first few. It it was configured to not respond, it simply wouldn't.
Pings to any external source - (not to the device itself) are also failing intermittently. This indicates that a device along the traffic path is having issues.
I can screenshot a nice disconnection plug in games, but there's no real need.
The evidence is there if you know how to interpret it. This needs to be investigated.
A question for you then!
What happens when your router gets repeated pings from the same source?
Does it not block them as a possible DDOS attack?
The more gamers try this tactic the worse their traces will get & it will more than likely also affect other gamers interested in low latency through these same nodes!
Check the timings between the true source & destination by all means but please do not
unnecessarily stress individual points on the main ISP network backbones!
"I have this awful feeling someone is watching every move I make (one of my pet hates is router location tagging)." Marvin (A paranoid Android)

Bouts of packet loss and complete loss of connection

Ok forum, I give up! I need your help.
I have an E1200 and am time out and packet loss issues. The internet connection is fine for 30 seconds to five minuets and then everything times out for 15-20 seconds. Although it’s only a minor incontinence to web browsing, it makes playing games and watching videos a nightmare. “Lost connection to server error.” and the like…
This is what I have done to remedy the problem.
I upgraded to a new router, the e1200 I am currently using, from my Tenda 10/100 N. The problems where the same that I am experience currently and the reason I bought it in the firs place.
When I directly connect to the cable modem, I have no issues and everything is fine.
I have run a trace route and the second hop, (the router to the modem) is the choke point.
I have cloned the MAC address
I have updated the firmware and hard reset
I have throttled my MTU to automatic, 1500, and 1472. None making any difference.
I have disabled NAT and all that does is kill my internet connection
I have disabled all firewalls router and windows, no change.
I replaced the physical wire from the router to the modem.
I have disconnected all devices except one computer, and no difference.
I ran a DNS trace and I have… non routable local internet address 192.168.1.1
DNS-cac-lb-01.rr.com and DNS-cac-lb-02.rr.com
I am using windows 7 and my ISP is time Warner so-cal. Help me obiwan, you’re my only hope.

Sorry friend. I have not had the gaul to load the 1.0 firmware. I am 99% sure I have the 2.0 hardware. I did however unplug my modem for an hour and then try and reconnect. The result was a lossless environment for fifteen to twenty minuets (a long time for me.). But, I am right back still having the same problem. A friend gave me a new netgear router, I am going to try that and I am going to go to Timewarner and have them replace my modem just to make sure there is nothing wrong with the surfboard. I will report back with my findings.

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