Ping Packet Loss across MPLS TE Tunnels

Hello...Please Help,
I have a Single Area OPSF network running across 4 main routers via GigEth Ckts. The OSPF Network is working correctly. I recently implemented MPLS TE creating two Tunnels - One Explicit Path and One Dynamic Path. Two of the Routers also have a T1 Frame Relay Link over which the Explicit path is configured. It is up and woking but I am experiencing 50-60 percent packet loss when pinging between these PE routers. When I force it to the dynamic tunnel it follows the same FR path and experiences the same packet loss. There is no packet loss anywhere else in the network.
This is a Lab environment w/three LAN's Two 7206VXR & Two 3745 routers and Three 3550 Switches - one per LAN
Suggestions?

Thank You for your response. The problem may not be an MPLS TE problem.
But would my "path-option" and "priority" being set the same for the Dynamic and Explicit Tunnels cause one tunnel to come up and the other go down and cease to signal. Right now I have one or the other working when viewed w/the "show mpls traffic-eng tunnels" command. If I take one down the other works.
The IPs are 10.1.101.1 & 2/30 respectively for the FR Link. That was a Typo...I have corrected it.
The FR interfaces are not SubInt's as the Serial Interface holds the IP address. These are strictly Point to Point but I have the "IP OSPF Network Broadcast" command set and OSPF going across them.
I have SubInt's set on the Gi0/3 Interface.
Gi0/3.1 & 3.10 for VLAN's 1 & 10
There are not any drops when pinging from Within the routers "Interface to Interface".
But when I ping the LAN Node to Node or from within the Router "if" I do not specify an "interface source" I receive the drops.
The result is the same from either side of the Network on both of the 7206 Routers.
Thanks, Kevin

Similar Messages

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 .

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

Packet loss when flood pinging a Mac

I had some trouble transferring large files between my iMac and my MBP the other day and so started a bit of investigation. Mistake really - here is what I found:
All mac targets are running up-to-date Leopard and use intel processors.
The home network has a linksys wireless router - all devices connected by copper.
flood ping tests with command 'sudo ping -f <target>:
from iMac to MBP shows 30% packet loss
from MBP tp iMac shows 33% packet loss
from iMac to windows laptop 0% packet loss
from iMac to linksys router 0% packet loss
from iMac to Freecom NAS box 0% packet loss
from MBP to windows laptop 0% packet loss
from MBP to linksys router 0% packet loss
from MBP to Freecom NAS box 0% packet loss
I took the macbook to work and picked targets on another site, several busy switch hops away.
from MBP to windows desktop 0% packet loss
from MBP to another iMac 26% packet loss
from MBP to mac mini 28% packet loss
from MBP to linux server 0% packet loss
from linux server to MBP 32% packet loss
The firewall is off on all the targets.
Seem clear enough - Mac machines can't handle high ping loads. It is no good telling me they don't have to. If they can answer a ping at all, they should be able to handle the load. It is a perfectly acceptable way of stress testing the link. File transfers are generally not an issue but now I want to know...
Why can't the macs handle the ping floods?
Is this indicative of any other weakness in the IP stack?
Pete

I had a suspicion of packet loss on my internet connection but could not be certain it was the ISP at fault. The fact that I had been having trouble transferring large files between my machines led me to look for possible local problems.
Network fault finding should always examine the hardware first so I wanted to see if there was anything about the cabling or the router which might be causing packet loss.
Actually copying data about the network is a pretty poor way to test things because you have several additional layer of complexity that can colour the results.
When I had narrowed down the flood ping packet loss to the macs, I went hunting on the 'net. There were plenty of people who were reporting various kinds of packet loss. Enough of them that I wondered if there was something more to it. Some of them were talking about similar symptoms to mine. The respondents usually answered a question other than the one asked so I thought I would put up some tests and see if there was actually a problem anywhere.
Now I know it is a 'feature' rather than a fault, I can work around it.
Thanks anyway
Pete

MPLS Packet Loss

Hi,
I have an issue problem on one PE (PE-3), if I doing test from the neighbor or another PE to PE-3 using "ping mpls pseudowire <loopback PE-3> <VCID>" and ping using vrf to PE-3 there is many packet loss, but ping test to loopback PE-3 is normal no packet loss.
anyone ever had an experience like this?
PE-1#ping mpls pseudowire xxx.xxx.xxx.130 10001 repeat 1000
Type escape sequence to abort.
Success rate is 94 percent (278/295), round-trip min/avg/max = 1/3/48 ms
PE-2#ping vrf TEST 192.168.9.2 repeat 1000
Type escape sequence to abort.
Sending 1000, 100-byte ICMP Echos to 192.168.9.2, timeout is 2 seconds:
Success rate is 92 percent (260/281), round-trip min/avg/max = 1/2/16 ms
Ping to loopback PE-3
PE-2#ping xxx.xxx.xxx.130 repeat 1000
Type escape sequence to abort.
Sending 1000, 100-byte ICMP Echos to xxx.xxx.xxx.130, timeout is 2 seconds:
Success rate is 100 percent (1000/1000), round-trip min/avg/max = 1/2/100 ms
PE-1#ping xxx.xxx.xxx.130 repeat 1000
Type escape sequence to abort.
Sending 1000, 100-byte ICMP Echos to xxx.xxx.xxx.130, timeout is 2 seconds:
Success rate is 100 percent (1000/1000), round-trip min/avg/max = 1/2/52 ms
Diagram
PE-3(Problem) ----------------------- PE-1 (Test using xconnect)
     |                                                 |
     |                                                 |
     |                                                 |
     |---------------------------------------- PE-2 (Test using vrf)
Thanks
Gilang.

Hi Gilang,
From description and diagram, Am I assuming right that 192.168.9.2 is configured on PE-2?. if so, I think the comparision should be between L2VC ping and ICMP ping to x.x.x.130.
Can you share the configuration from PE-1?. Do you have any CoPP or QoS enabled?. L2VC ping is not ICMP based and uses 127.x.x.x address as destination. So they are a bit different with L3 details in header (though it is a ping to same address).
-Nagendra

Packet loss when pinging from/to a cisco 3560e switch

I see Packet loss when pinging from/to a cisco 3560e switch. CPU utilization is normal.
Switches are running with IOS c3560e-universalk9-mz.122-35.SE5.bin.
Packet loss is observed for all the devices irrespective of directly connected or remote devices.
If i do self pinging, there are no packet loss.
I don't see any error on interface.
Can anyone please help me in resolving this issue.

TCB       Local Address           Foreign Address        (state)
03737C48 10.47.0.229.60053       10.41.81.55.49         CLOSEWAIT
039ACDC4 10.47.0.229.61929       10.41.35.250.49        CLOSEWAIT
03B316C0 10.47.0.229.27544       10.41.81.55.49         CLOSEWAIT
038228F0 10.47.0.229.16506       10.41.35.250.49        CLOSEWAIT
039C3D04 10.47.0.229.15207       10.41.81.55.49         CLOSEWAIT
039A9BD0 10.47.0.229.52983       10.41.81.55.49         CLOSEWAIT
0394152C 10.47.0.229.22425       161.61.35.250.49       CLOSEWAIT
037D811C 10.47.0.229.21117       10.41.81.55.49         CLOSEWAIT
039C12BC 10.47.0.229.37437       10.41.81.55.49         CLOSEWAIT
03933B84 10.47.0.229.34085       161.61.35.250.49       TIMEWAIT
03B32340 10.47.0.229.45729       10.41.81.55.49         CLOSEWAIT
038247D0 10.47.0.229.32816       10.41.81.55.49         CLOSEWAIT
039A92D8 10.47.0.229.38680       161.61.35.250.49       CLOSEWAIT
037370F0 10.47.0.229.13212       10.41.81.55.49         CLOSEWAIT
037D85F0 10.47.0.229.38728       10.41.81.55.49         CLOSEWAIT
03B2B284 10.47.0.229.23428       10.41.81.55.49         CLOSEWAIT
03B2ADB0 10.47.0.229.56836       10.41.81.55.49         CLOSEWAIT
0394BFF0 10.47.0.229.23257       161.61.35.250.49       CLOSEWAIT
036604DC 10.47.0.229.44437       10.41.81.55.49         CLOSEWAIT
0394C700 10.47.0.229.22          192.37.184.211.61639   ESTAB
039B9A68 10.47.0.229.20543       10.41.81.55.49         CLOSEWAIT
03739B28 10.47.0.229.15392       10.41.81.55.49         CLOSEWAIT
TCB       Local Address           Foreign Address        (state)
0392EA48 10.47.0.229.13862       10.41.81.55.49         CLOSEWAIT
0365E23C 10.47.0.229.27856       10.41.81.55.49         CLOSEWAIT
03817C0C 10.47.0.229.64929       10.41.81.55.49         CLOSEWAIT
039357C8 10.47.0.229.22088       10.41.81.55.49         CLOSEWAIT
037375C4 10.47.0.229.21832       10.41.81.55.49         CLOSEWAIT
039C20E8 10.47.0.229.18169       10.41.81.55.49         CLOSEWAIT
03716D08 10.47.0.229.61993       10.41.81.55.49         CLOSEWAIT
039A74E4 10.47.0.229.62948       10.41.81.55.49         CLOSEWAIT
03655480 10.47.0.229.14052       10.41.81.55.49         CLOSEWAIT
039407F0 10.47.0.229.49643       161.61.35.250.49       CLOSEWAIT
039A53AC 10.47.0.229.13233       10.41.81.55.49         CLOSEWAIT
03739FFC 10.47.0.229.16605       10.41.81.55.49         CLOSEWAIT
039B82B8 10.47.0.229.16458       10.41.35.250.49        CLOSEWAIT
039BEBA4 10.47.0.229.64377       10.41.81.55.49         CLOSEWAIT
03741980 10.47.0.229.13866       10.41.81.55.49         CLOSEWAIT
03B3ABF8 10.47.0.229.19365       10.41.81.55.49         CLOSEWAIT
039B5810 10.47.0.229.24768       10.41.81.55.49         CLOSEWAIT
03956E48 10.47.0.229.55980       161.61.35.250.49       CLOSEWAIT
03946820 10.47.0.229.65053       161.61.35.250.49       CLOSEWAIT
037DBE94 10.47.0.229.15283       10.41.81.55.49         CLOSEWAIT
039A4854 10.47.0.229.48562       10.41.81.55.49         CLOSEWAIT
TCB       Local Address           Foreign Address        (state)
03B33320 10.47.0.229.29803       10.41.81.55.49         CLOSEWAIT
03B3B79C 10.47.0.229.12142       10.41.81.55.49         CLOSEWAIT
03713C9C 10.47.0.229.63799       10.41.81.55.49         CLOSEWAIT
039BBECC 10.47.0.229.14763       10.41.81.55.49         CLOSEWAIT
03656E40 10.47.0.229.16357       10.41.81.55.49         CLOSEWAIT
0362A73C 10.47.0.229.62450       10.41.81.55.49         CLOSEWAIT
039B878C 10.47.0.229.64402       161.61.35.250.49       CLOSEWAIT
03826CFC 10.47.0.229.16108       10.41.81.55.49         CLOSEWAIT
03B2CA34 10.47.0.229.17634       10.41.81.55.49         CLOSEWAIT
03AD78D0 10.47.0.229.15249       161.61.35.250.49       CLOSEWAIT
03AD967C 10.47.0.229.20389       161.61.35.250.49       CLOSEWAIT
03B2C560 10.47.0.229.37079       10.41.81.55.49         CLOSEWAIT
039C5128 10.47.0.229.24711       10.41.81.55.49         CLOSEWAIT
03822F74 10.47.0.229.54866       10.41.81.55.49         CLOSEWAIT
0372C5FC 10.47.0.229.13298       10.41.81.55.49         CLOSEWAIT
0372D278 10.47.0.229.12407       10.41.81.55.49         CLOSEWAIT
039A33D0 10.47.0.229.36573       10.41.81.55.49         CLOSEWAIT
039BCEF8 10.47.0.229.53853       10.41.81.55.49         CLOSEWAIT
039C02D8 10.47.0.229.53725       10.41.81.55.49         CLOSEWAIT
039B5CE4 10.47.0.229.58027       10.41.81.55.49         CLOSEWAIT
0381866C 10.47.0.229.17100       10.41.81.55.49         CLOSEWAIT
TCB       Local Address           Foreign Address        (state)
039BB374 10.47.0.229.53148       10.41.81.55.49         CLOSEWAIT
03AD3634 10.47.0.229.19716       161.61.35.250.49       CLOSEWAIT
0362DAA4 10.47.0.229.19479       10.41.81.55.49         CLOSEWAIT
0365AE60 10.47.0.229.62209       10.41.81.55.49         CLOSEWAIT
0362D5D0 10.47.0.229.41327       10.41.81.55.49         CLOSEWAIT
037D7C48 10.47.0.229.58283       10.41.81.55.49         CLOSEWAIT
03955474 10.47.0.229.33810       161.61.35.250.49       CLOSEWAIT
0373B15C 10.47.0.229.23331       10.41.81.55.49         CLOSEWAIT
036628D0 10.47.0.229.46856       10.41.81.55.49         CLOSEWAIT
03819584 10.47.0.229.19861       10.41.81.55.49         CLOSEWAIT
0394D000 10.47.0.229.64732       10.41.35.250.49        CLOSEWAIT
0394B760 10.47.0.229.19967       161.61.35.250.49       CLOSEWAIT
039B6BD4 10.47.0.229.40096       10.41.81.55.49         CLOSEWAIT
03AD7150 10.47.0.229.65184       10.41.35.250.49        CLOSEWAIT
039BC3A0 10.47.0.229.64702       10.41.81.55.49         CLOSEWAIT
03B3A724 10.47.0.229.60399       10.41.81.55.49         CLOSEWAIT
037145E0 10.47.0.229.43951       10.41.81.55.49         CLOSEWAIT
03955EDC 10.47.0.229.29015       161.61.35.250.49       TIMEWAIT
0365FB34 10.47.0.229.13961       10.41.81.55.49         CLOSEWAIT
03828D54 10.47.0.229.12743       10.41.81.55.49         CLOSEWAIT
037DB40C 10.47.0.229.23708       10.41.81.55.49         CLOSEWAIT
TCB       Local Address           Foreign Address        (state)
039AF814 10.47.0.229.15100       10.41.81.55.49         CLOSEWAIT
0392E344 10.47.0.229.23399       10.41.35.250.49        CLOSEWAIT
0393DC3C 10.47.0.229.15393       161.61.35.250.49       CLOSEWAIT
03AD85D0 10.47.0.229.40932       161.61.35.250.49       TIMEWAIT
039574CC 10.47.0.229.25935       10.41.35.250.49        CLOSEWAIT
03738B74 10.47.0.229.58656       10.41.81.55.49         CLOSEWAIT
039AD91C 10.47.0.229.56760       10.41.81.55.49         CLOSEWAIT
03B3BC70 10.47.0.229.15058       10.41.81.55.49         CLOSEWAIT
03B2DC54 10.47.0.229.51131       161.61.35.250.49       CLOSEWAIT
03B393F0 10.47.0.229.11957       10.41.35.250.49        CLOSEWAIT
039B2610 10.47.0.229.33728       10.41.81.55.49         CLOSEWAIT
03B311EC 10.47.0.229.18047       10.41.81.55.49         CLOSEWAIT
039A8E04 10.47.0.229.52022       161.61.35.250.49       CLOSEWAIT
0365D460 10.47.0.229.12241       10.41.81.55.49         CLOSEWAIT
03B33E78 10.47.0.229.47640       10.41.81.55.49         CLOSEWAIT
0372C128 10.47.0.229.60323       10.41.81.55.49         CLOSEWAIT
03661CD8 10.47.0.229.39923       10.41.81.55.49         CLOSEWAIT
0393C73C 10.47.0.229.41864       10.41.35.250.49        CLOSEWAIT
03829584 10.47.0.229.56673       161.61.35.55.49        CLOSEWAIT
0362AC10 10.47.0.229.31952       10.41.81.55.49         CLOSEWAIT
039BF078 10.47.0.229.22636       10.41.81.55.49         CLOSEWAIT
TCB       Local Address           Foreign Address        (state)
0365CF8C 10.47.0.229.14476       10.41.81.55.49         CLOSEWAIT
039B443C 10.47.0.229.59226       10.41.81.55.49         CLOSEWAIT
0393E794 10.47.0.229.56282       10.41.35.250.49        CLOSEWAIT
03657740 10.47.0.229.25769       10.41.81.55.49         CLOSEWAIT
03B2F6E8 10.47.0.229.19328       10.41.81.55.49         CLOSEWAIT
0373AC88 10.47.0.229.25766       10.41.81.55.49         CLOSEWAIT
039B213C 10.47.0.229.28882       10.41.81.55.49         CLOSEWAIT
039C07AC 10.47.0.229.38201       10.41.81.55.49         CLOSEWAIT
03AD8DD0 10.47.0.229.23002       10.41.35.250.49        CLOSEWAIT
03739048 10.47.0.229.29572       10.41.35.250.49        CLOSEWAIT
039BA464 10.47.0.229.32273       10.41.81.55.49         CLOSEWAIT
03B31E6C 10.47.0.229.32521       10.41.81.55.49         CLOSEWAIT
0365EBE0 10.47.0.229.41319       10.41.81.55.49         CLOSEWAIT
03938804 10.47.0.229.62841       10.41.35.250.49        CLOSEWAIT
039A1AF8 10.47.0.229.12758       10.41.81.55.49         CLOSEWAIT
039B7DE4 10.47.0.229.20921       10.41.81.55.49         CLOSEWAIT
036549F8 10.47.0.229.51903       10.41.81.55.49         CLOSEWAIT
03714CC8 10.47.0.229.45145       10.41.81.55.49         CLOSEWAIT
037425F8 10.47.0.229.56492       10.41.81.55.49         CLOSEWAIT
03B39D74 10.47.0.229.18174       10.41.81.55.49         CLOSEWAIT

Flood ping of loopback device gives 20% packet loss!

While trying to diagnose a problem with my Airport Express (high packet loss even with a strong signal), I noticed that my Macbook cannot reliably flood ping its own loopback device!
bash-3.2$ $ sudo ping -f 127.0.0.1
PING 127.0.0.1 (127.0.0.1): 56 data bytes
....^C
--- 127.0.0.1 ping statistics ---
994 packets transmitted, 750 packets received, 24% packet loss
round-trip min/avg/max/stddev = 0.012/0.017/0.103/0.007 ms
As the loopback interface is internal, I get precisely the same result whether Airport is turned on or off.
This seems completely crazy to me! Anyone have any idea what might be going on?
Message was edited by: zzz Matt Taylor (replaced ping output with one with linebreaks to avoid excessively wide post)

Can't help you specifically with that, but just last night my Atheros AR5008 adapter starting dropping 40%-80% of the packets to my router. It's unusably slow now. I had this problem with the 2.6.38 kernel and was able to solve it by passing the nohwcrypt option to the ath9k module, but that doesn't work anymore.
I'm now on the 3.0.4 kernel, Arch x64. Last updates that MAY be relevant were dbus-sharp, dbus-sharp-glib, and gnutls. I started having problems the day after upgrading these packages. I'm connecting in 802.11n mode.
I've been looking for evidence of related bugs but so far nothing. I wonder if this is a broader issue affecting more than just the Atheros or Ralink drivers?
EDIT: downgrading gnutls from 3.0.3-1 to 3.0.2-1 reduced my packet loss to about 15%, so the internet is now basically usable. I also tried downgrading glib-networking (which I updated to version 2.28.7-5 a few days back), but that didn't seem to help.
Last edited by rsking84 (2011-09-22 01:32:59)

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

PB G4 to WRT54G Ping Times with Packet Loss!!???

This morning when I woke up my PB G4, my Airport couldn't find my network. Found out that my father had turned off the modem and router because his Dell, which is wired to the router, had slow connection to the network (10 MB/ps or less, I think). I tried using Internet Connect using the assigned Network name and entering the WPA Personal password with no luck. So I then reset the router, configured to it's original settings and my fathers Dell got a better connection but my PB has gotten slower in connecting to sites and the page loading is considerably slower. Looked at iStumbler and it shows a lower signal and now it's showing noise, where before there was none. I ran a ping test to the router and got this.
--- 192.168.1.1 ping statistics ---
100 packets transmitted, 98 packets received, 2% packet loss
round-trip min/avg/max/stddev = 1.536/2.495/26.476/3.414 ms
The router is a WRT54G v5 with the latest firmware that I had just reflashed.

I reset my router, changed the channel to 11 and disabled the SSID. That setting got a better but still iffy ping time with no noise.
I tried your suggestion and got this, along with some noise.
--- 192.168.1.1 ping statistics ---
100 packets transmitted, 99 packets received, 1% packet loss
round-trip min/avg/max/stddev = 1.596/4.201/33.784/6.652 ms
Any other ideas?

High ping and packet loss.

How do i fix high ping and packet loss? Also when i ping my own ip, it results in 100.0% packet loss.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Packet loss and high ping

I have been having intermittent packet loss issues for the greater part of this month, Today has made it so I can barely stay connected to the internet. I have gone through customer service a couple times, multiple router resets, wired vs. unwired, nothing changes. Here's some images of the problem from this morning. Just wondering if there was anything I could do on my end to fix this. Modem model is SB6141.

Hi bentheren,
Thanks for posting, have you tried setting up port forwarding to see if this makes any difference?
Cheers
Neil
BTCare Community Mod
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ME3600 packet loss problem - reboot to fix.

One of our ME3600 units has developed a problem where we would lose IPv6 Neighbours and OSPFv3 neighbours, followed by the device not passing MPLS traffic. IPv4 traffic suffering bad packet loss.
I discovered that devices attached to the Gigabit ports were receiving errored frames so the ME3600 seemed to be sending out bad frames.
rebooting the device would fix it for a while but it kept happening at regular intervals, usually when the box was carrying more ipv6 traffic.
We have upgraded to the latest firmware which did not help, and performed a full hardware replacement from Cisco only to find we are still seeing the same issue!
there was no configuration change that I could point as being a catalyst for the problem, the most recent thing was enabling ipv6 VRFs, but IPv6 is also carried in the global table while we move some services around.po
Has anyone else experienced similar problems with the ME3600?

This sounds very similar to a problem we have seen across multiple boxes.
I've not noticed whether OSPFv3 neighcors drop, however have seen MPLS stop forwarding and heavy v4 loss. Control plane for v4 seems to stay up (ie v4 OSPF neighbors keep their adjacany) so routes still advertised etc. Performing a shut / no shut of one of the core interfaces will generally result in a complete failure of the interfaces on that ASIC (the two 10G ports in our case) - can't ping adjacent devices after the no shut, but the GE ports still work.
10G ports are core facing on our boxes, and adjacent neighbors see increasing input errors when the issue occurs.
Issue has only been seen during peak traffic times. Reboot fixes the problem.
Did you find any resolution? We've been pointed at CSCui23725, and advised to use the command "platform acl egress-disable". This appears to be working so far.

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.

Serious packet loss creating roaming network over Ethernet.

Comcast Business Gateway modem/router with static addressing provides one address for an externally accessible web/mail server on one of its four RJ45 LAN ports. The second RJ45 LAN port provides a second external address with NAT & DHCP to an internal private 10.1.10.x network connected to a 24-port Netgear gigabit switch. The Netgear is our home's primary switch, with most of the ports going to different jacks thrpughout our house. We have various PCs and Macs, a home server and other similar devices hardwired through the house jacks back to the Netgear receiving DHCP assignments from the Comcast router.
We've had (1) Airport Extreme base station (last generation, not the tall one) connected to the network, also receiving a DHCP IP address from the Comcast box. It's set to bridging mode, cabled from its WAN port by CAT5e to the Netgear switch and offering a Wi-Fi SSID with WPA2 PSK. NAT/DHCP etc is disabled. IPv6 is set to link-local only. No disks attached. Wireless channels set to Automatically.
At this point we have fairly smooth network performance, everything connects immediately (iOS devices, Android devices, utility boxes, computers, etc) and 0% apparent packet loss.
We have some weak Wi-Fi coverage on the far side of the house and I'd like to establish a roaming network, with a new Airport Express (most recent gen) plugged into a wall jack on that side of the house, cabled by Ehternet back to the Netgear, and set up identically. Same SSID and PSK. But when I activate this, I'm finding the network gets anywhere from 88% to 98% packet loss pinging the Comcast router and going outbound. And none of the iOS devices I tried could establish a functional network connection.
I tried replacing the Airport Express with another similar Airport Express, to same effect. I set the Airport Express to create a second SSID and that seemed to work OK, but then I had two distinct networks instead of a roaming network. I also tried disabling DHCP on the Comcast router and enabling it on the Airport Extreme Base Station, but still had the same packet loss. I also tried setting one, the other, and then both Airport boxes to static addressess bypassing the DHCP for their LAN-side connections (although still bridging) and still too much packet loss. No matter what I do, I can't seem to establish a functional Ethernet-connected roaming network with both Airport boxes.
Any ideas?

Thank you for the reply. The Netgear switch I'm using is a GS724T -- it has management features which I'm working through, but all the ports are set to auto-negotiate and the port the Airport Express is on is lit for 100baseT. I didn't see any way to set the MTU in the Airport Utility menus/buttons.
When I join the Airport Express to the network, it sets up the roaming network as intended. But then performance all across the switch goes downhill -- even when pinging from a PC attached to one of the switch ports to the Comcast router I get 90% packet loss or worse, so that nothing seems to get out or in until I disconnect the Airport Express.. It's that dramatic a difference. It doesn't make sense to me that a wireles roaming network across the two Airport boxes should kill performance through the router...

Server 2012 R2 VM packet loss issue

Hi all,Looking for opinions on a tricky issue. Working on a client job to add 2X Server 2012R2 VMs for DC and file server duty.Environment is as follows: 2 HP Proliant DL380p G8 hosts.
VMware vSphere 5.1 (Build and Update 5.1.0 build=build-1483097 (Update 2)Network adapters broadcom netXtreme BCM 5719. Driver Version: 3.135b.v50.1Both hosts are already running a mix for Windows 2003 and 2008 servers with general workloads like DCs, SQL, virtual applicances. they are having no issues with any of the current setup.However, the new 2012 R2 VMs I have added are experiencing packet loss. its random maybe every 5 minutes 3 or 4 packets are dropped and then the connection returns. A ping plotter trace over an hour will show red spikes dotted across it. Bare in mind these servers are of yet not doing anything, just been installed, patched. One...
This topic first appeared in the Spiceworks Community

I have two clustered hosts running Server 2012 R2. I have a NAS setup with iSCSI targets that I'm using for storage. I would like to setup a second NAS and replicate my VM's to the second NAS in case my primary NAS device fails. Is there anyway
I can have Hyper-V or VMM perform the replication?
You cannot do that AS IS. You do Hyper-V Replica between Hyper-V hosts and not using same on-site hosts and remote storage. Making long story short: you'll need another Hyper-V outside of your current cluster and it can store data (VMs) anywhere (including
that extra NAS, make sure it's actually an iSCSI SAN capable as there are no low-end models that support SMB3 and Hyper-V cannot use NFS for VM hosting). See:
Automated Disaster Recovery with Hyper-V Replica
http://blogs.technet.com/b/keithmayer/archive/2012/10/05/automate-disaster-recovery-plan-with-windows-server-2012-hyper-v-replica-and-powershell-3-0.aspx
"Hyper-V Replica enables Hyper-V hosts or clusters to enable distance replication of running VMs to
remote Hyper-V hosts over a standard IP WAN connection."
Hope this helped :)
StarWind VSAN [Virtual SAN] clusters Hyper-V without SAS, Fibre Channel, SMB 3.0 or iSCSI, uses Ethernet to mirror internally mounted SATA disks between hosts.

Ping Packet Loss across MPLS TE Tunnels

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