Hello,
I have a UBR7246 and I get slow upload speeds for everyone. It's not RF and it's not our ISP's bandwidth. It's either the modem config file or the CMTS config. We have about 30 cable modems on this CMTS. From what I know, everyone has the same problem. If I have them go to speedtest.net they get ping around 30ms, downloads and around 10MB and up at about 0.24MB! The strange thing is that the Hulu people aren't complaining. The modem config file and the cable interface portion of the CMTS file are below. Ideas are help are greatly appreciated.
Thanks,
emkowale
Main
{
NetworkAccess 1;
MaxCPE 2;
MaxClassifiers 20;
GlobalPrivacyEnable 0;
SnmpMibObject ppCfgMtaCallpFeatureSwitch.0 Integer 16384 ;
SwUpgradeFilename "TS070563_092012_NA.MODEL_7_8.SIP.img";
SwUpgradeServer 10.2.5.2;
SnmpMibObject arrisMtaDevProvMethodIndicator.0 Integer 4; /* gupi */
MfgCVCData 0x308203a63082028ea00302010202106c0943ec39872d8fecda6c489e5e9030300d06092a864886f70d0101050500308197310b300906035504061302555331393037060355040a133044617461204f766572204361626c65205365727669636520496e746572666163652053706563696669636174696f6e7331153013060355040b130c4361626c65204d6f64656d73313630340603550403132d444f43534953204361626c65204d6f64656d20526f6f7420436572746966696361746520417574686f72697479301e170d3031303931323030303030305a170d3133303931313233353935395a306a310b300906035504061302555331223020060355;
MfgCVCData 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;
MfgCVCData 0x492f14b48c97a806327949c5faaa438ac5f0a976474fd26cde4556d52bfa5dc7508fa7f150fa454c681f5108085296f2c94c371b57cd193e8939d6268c8cd96e3e8a06caba6d5cb82989c1751e21e77f09ca73da4daa1fde5bc68bed4b8eb5b0ea3abb23d4249790b2a093dde0806573138cbb99fdceb6ffc10203010001a31a301830160603551d250101ff040c300a06082b06010505070303300d06092a864886f70d0101050500038201010094f271a8bbbac1d7fc054260170b59f0b6ac9da70d0148699e0d240b033d9c34918f7737cd45b822edf9e1bec4c5b030d878b6378b5a7995d032e933ec0ae0db436a3f52181ffee08e0cd4f6201f1115;
MfgCVCData 0x0f4cf1bef41c9c58ef166582b5e7f1aa1afcd7badeb7b0097845c2d95ee89f66767f3bc080c2994e8c39ca9f22bcc22151ba9221b7ca87e81fdad3fcf48feb61c739ec751ac00afacd88ccc99d11ee6a96c5a591f625875ed7af60460e7330dee05ec183d1717af3f2702df0253fd1a49cbca6a654b37cb7846f91c11e3a83d1e68c28aa25a35d9849393b009b9a5328e5729017d35bb841d62f950007ba7d73e2fff4e14d0f3a49193805495714811b;
BaselinePrivacy
{
AuthTimeout 10;
ReAuthTimeout 10;
AuthGraceTime 600;
OperTimeout 10;
ReKeyTimeout 10;
TEKGraceTime 600;
AuthRejectTimeout 60;
SAMapWaitTimeout 1;
SAMapMaxRetries 4;
}
DsServiceFlow
{
DsServiceFlowRef 100;
QosParamSetType 7;
TrafficPriority 3;
MaxRateSustained 10000000;
}
DsServiceFlow
{
DsServiceFlowRef 101;
QosParamSetType 7;
TrafficPriority 7;
MaxRateSustained 10000000;
}
UsServiceFlow
{
UsServiceFlowRef 201;
QosParamSetType 7;
TrafficPriority 7;
MaxTrafficBurst 3044;
MaxConcatenatedBurst 1522;
MaxRateSustained 2000000;
}
UsServiceFlow
{
UsServiceFlowRef 200;
QosParamSetType 7;
TrafficPriority 3;
MaxTrafficBurst 3044;
MaxConcatenatedBurst 1522;
MaxRateSustained 2000000;
}
DsPacketClass
{
ServiceFlowRef 101;
ClassifierRef 101;
RulePriority 1;
ActivationState 1;
IpPacketClassifier
{
IpSrcAddr 10.2.5.2;
IpSrcMask 255.255.255.255;
IpDstAddr 10.50.2.0;
IpDstMask 255.255.255.0;
}
}
UsPacketClass
{
ServiceFlowRef 201;
ClassifierRef 201;
RulePriority 1;
ActivationState 1;
IpPacketClassifier
{
IpSrcAddr 10.50.2.0;
IpSrcMask 255.255.255.0;
IpDstAddr 10.2.5.2;
IpDstMask 255.255.255.255;
}
}
SnmpMibObject docsDevSwAdminStatus.0 Integer 2; /* allowProvisioningUpgrade */
SnmpMibObject arrisCmDevSwAdminStatus.0 Integer 2; /* allowArrisProvisioningUpgrade */
SnmpMibObject docsDevNmAccessCommunity.1 String "C7H5N3O6" ;
SnmpMibObject docsDevNmAccessControl.1 Integer 2; /* read */
SnmpMibObject docsDevNmAccessInterfaces.1 HexString 0x4000 ;
SnmpMibObject docsDevNmAccessStatus.1 Integer 4; /* createAndGo */
SnmpMibObject docsDevNmAccessCommunity.2 String "C11H17N2O2SNa" ;
SnmpMibObject docsDevNmAccessControl.2 Integer 3; /* readWrite */
SnmpMibObject docsDevNmAccessInterfaces.2 HexString 0x4000 ;
SnmpMibObject docsDevNmAccessStatus.2 Integer 4; /* createAndGo */
/* CmMic f3e82de721f11603b963b392ef4d4b52; */
/* CmtsMic ab1442f621a52ae124fe303e6812fdfd; */
/*EndOfDataMkr*/
/* Pad */
}
interface Cable3/0
no ip address
load-interval 30
no cable packet-cache
cable map-advance dynamic 600 500
cable bundle 1
cable downstream channel-id 0
cable downstream annex B
cable downstream modulation 64qam
cable downstream interleave-depth 32
cable downstream frequency 547250000
no cable downstream rf-shutdown
cable downstream rf-power 50
cable upstream max-ports 4
cable upstream 0 connector 0
cable upstream 0 frequency 17460000
cable upstream 0 ingress-noise-cancellation 10
cable upstream 0 docsis-mode tdma-atdma
cable upstream 0 channel-width 3200000 3200000
cable upstream 0 minislot-size 2
cable upstream 0 power-level -1
cable upstream 0 range-backoff 3 6
cable upstream 0 modulation-profile 142
cable upstream 0 equalization-coefficient
cable upstream 0 load-balance group 1
no cable upstream 0 shutdown
cable upstream 1 connector 1
cable upstream 1 frequency 28000000
cable upstream 1 ingress-noise-cancellation 200
cable upstream 1 docsis-mode tdma-atdma
cable upstream 1 channel-width 3200000 3200000
cable upstream 1 minislot-size 2
cable upstream 1 power-level 0
cable upstream 1 range-backoff 3 6
cable upstream 1 modulation-profile 142
no cable upstream 1 shutdown
Hi,
ping around 30ms means you have RF issue, and this can cause an upstream speed problems as well...
Regards
Darek
In your modem config, you don't have
SfMaxTrafficRate
set, that entry sets your upstream speed.
In your CMTS, I don't see that you have
cable upstream rate-adapt
setting configured.
You wouldn't notice it on hulu, because streaming videos is all downstream, not upstream.
You set the downstream frequency to 547250000 - its not a center of the channel 78
and you can have interferences from the TV ch 77... downstream frequency should be set to 549000000
Darek
That has nothing to do with the upstream
I previously wrote some info on this topic here
http://www.docsis.org/comment/2842#comment-2842
After much trouble i found that Derek was right... As usual... It was an RF issue. Specifically a bad node. I found the problem by writing a script to ping each modem on the CMTS 100 times. Anything with packet loss greater than 0% is bad. I found that 5 modems had packet loss and they were on the same node! Bad node. Warranty replacement. I hope this helps someone.
Eric