Hi
We are having problems sending video by WhatsApp through cable modem, some do not finish sending completely
The same to upload to whatsapp states
testing our internet through a router that does not go through cmts works fine
According to the output from show cpu-history, this problem is not due to high processor usage
How can we solve this problem?
Regards
what's the utilization on your upstream?
zoom meetings, same issue?
latency, what is the average response with pings to cable modem?
qos, test done with modems having a qos of 0?
modem files, burst and concatenated burst value correct on the upstream?
what speed profiles do the modems have and have you tried the same test on modems with higher speed profiles?
upstream snr, what is it?
Did you fix your 90% utilization issue on the downstream?
Sorry, need something to work with other than it worked off the router. Did the port on the router have the same qos as the modems in field?
Hello
this is an example of a configuration file to have 10 Mb Down and 2Mb Up
Please review and suggest that I can modify to test if it improves the uploading of videos by whatsapp
GlobalPrivacyEnable 1;
UsServiceFlow
{
UsServiceFlowRef 1;
QosParamSetType 7;
TrafficPriority 0;
MaxTrafficBurst 20000;
MaxRateSustained 2048000;
}
DsServiceFlow
{
DsServiceFlowRef 2;
QosParamSetType 7;
TrafficPriority 0;
MaxTrafficBurst 8000;
MaxRateSustained 10240000;
}
MaxCPE 4;
SnmpMibObject docsDevNmAccessStatus.1 Integer 4; /* createAndGo */
SnmpMibObject docsDevNmAccessIp.1 IPAddress 10.10.0.1 ;
SnmpMibObject docsDevNmAccessIpMask.1 IPAddress 255.255.255.255 ;
SnmpMibObject docsDevNmAccessControl.1 Integer 2; /* read */
SnmpMibObject docsDevNmAccessInterfaces.1 String "@" ;
SnmpMibObject docsDevNmAccessCommunity.1 String "public" ;
SnmpMibObject docsDevNmAccessStatus.2 Integer 4; /* createAndGo */
SnmpMibObject docsDevNmAccessIp.2 IPAddress 180.80.80.20 ;
SnmpMibObject docsDevNmAccessIpMask.2 IPAddress 255.255.255.255 ;
SnmpMibObject docsDevNmAccessControl.2 Integer 3; /* readWrite */
SnmpMibObject docsDevNmAccessInterfaces.2 String "@" ;
SnmpMibObject docsDevNmAccessCommunity.2 String "public" ;
SnmpMibObject docsDevNmAccessStatus.3 Integer 4; /* createAndGo */
SnmpMibObject docsDevNmAccessIp.3 IPAddress 10.8.0.1 ;
SnmpMibObject docsDevNmAccessIpMask.3 IPAddress 255.255.255.255 ;
SnmpMibObject docsDevNmAccessControl.3 Integer 2; /* read */
SnmpMibObject docsDevNmAccessInterfaces.3 String "@" ;
SnmpMibObject docsDevNmAccessCommunity.3 String "public" ;
/* CmMic f1b3eaa1b54fe85bd59e6f096ba3620b; */
/* CmtsMic fd394e2434c0abae65b0b91b3817c6dc; */
/*EndOfDataMkr*/
}
regards
Hi
any answer that can help me
Regards
there was a list of things to check that could point to a possible root cause.
there's also the 90% utilization on the downstream pointed out before, all you provided was the modem file.
look into the things to check and do and let everyone now what the result was. and asking yet again is the downstream utilization issue resolved?
Hi
We test where the use of the channels is less than 60% and the problem happens, with this we conclude that this is not the cause
we have done the test at 5 a.m. where there is very little traffic, and in some tests the videos are not sent by whatsapp, they do not finish uploading
ping a modem test from cmts:
CASA-C100G#ping 10.8.18.66
PING 10.8.18.66 (10.8.18.66): 56 bytes of data.
64 bytes from 10.8.18.66: icmp_seq=0 ttl=63 time=15.059 ms
64 bytes from 10.8.18.66: icmp_seq=1 ttl=63 time=14.729 ms
64 bytes from 10.8.18.66: icmp_seq=2 ttl=63 time=13.880 ms
--- 10.8.18.66 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 13.880/14.556/15.059/0.497 ms
CASA-C100G#
CASA-C100G#ping 10.8.18.66
PING 10.8.18.66 (10.8.18.66): 56 bytes of data.
64 bytes from 10.8.18.66: icmp_seq=0 ttl=63 time=13.916 ms
64 bytes from 10.8.18.66: icmp_seq=1 ttl=63 time=13.798 ms
64 bytes from 10.8.18.66: icmp_seq=2 ttl=63 time=12.836 ms
--- 10.8.18.66 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 12.836/13.517/13.916/0.484 ms
CASA-C100G#
regards
utilization of 60% is not a useful stat, is it upstream or downstream, bonding (more than one channel or not), what is your minislot usage on your upstream? you can have low bandwidth utilization and high minislot utilization and have no capacity on your upstream channels, this is typically caused by customers that have malware trying to infect the world. What is the signal level of SNR on the port the user is uploading on, as well as downstream SNR.
pings with the default size of 64 are not a very useful troubleshooting tool, bumping the size up to 1472 will mimic more typical bandwidth that a customer would use especially while uploading a file. Setting the count is also useful.. On Casa this is done with the ping repeat <count> size <size 1472 max>
In order for someone to actually help you please submit the output of these commands, run it twice and include both results, some of this information is counter based, meaning you have to have two points to calculate a rate, and both points time referenced to calculate a rate per second.
show clock
show running-config | include channel-utilization
show interface upstream stat
show interface qam stat
show upstream signal-quality | ex 0.0
show cable modem <mac of modem experiencing the issue> verbose
show cable modem <mac of modem experiencing the issue> qos verbose
Hi
I attach Information with the result of the commands, I remember that the problem does not happen only with a modem but with all the modems of the network
Mac test modem: 7cbf.b15d.2691
Use the upstream port: 11/14
Use the QAM Port: 2/3
CASA-C100G#show cable modem | include 5d.2691
MAC Address IP Address US DS MAC Prim RxPwr Timing Num BPI
Intf Intf Status Sid (dB) Offset CPEs Enb
7cbf.b15d.2691 10.8.170.67 11/14.0/0* 2/3/17* online(pt) 6844 8.0 2254 1 yes
CASA-C100G#show clock
Tue Dec 22 06:39:55 UTC 2020
CASA-C100G#show running-config | include channel-utilization
channel-utilization-interval 30
Interface upstream 11/14.0 statistics
Admin status: UP
Channel utilization interval: 30
Avg upstream channel utilization: 26
Avg percent contention slots: 72
Avg percent initial ranging slots: 1
Avg percent minislots lost on late MAPs: 0
Logical-channel 0
Received 26678 broadcasts, 6690014 multicasts, 3580706722 unicasts
1455 discards, 132174973 errors, 1059 unknown protocol
6029518306 Unerroreds, 181866523 Correcteds, 1685357 Uncorrectables
Total Modems On This Upstream Channel: 115 ,113 active cm,188 secondary cm
Req Mslots 276634708, Used Req Mslots 2211869492
Init Mtn Mslots 1587459015, Used Init Mtn Mslots 0
Total Mslots 1300839320, Ucast Granted Mslots 3570154131
Admin status: UP
Last clearing of interface stat: never
Logical-channel 1
Received 0 broadcasts, 0 multicasts, 0 unicasts
0 discards, 0 errors, 0 unknown protocol
0 Unerroreds, 0 Correcteds, 0 Uncorrectables
Total Modems On This Upstream Channel: 115 ,113 active cm,188 secondary cm
Req Mslots 0, Used Req Mslots 0
Init Mtn Mslots 0, Used Init Mtn Mslots 0
Total Mslots 0, Ucast Granted Mslots 0
Admin status: DOWN
Last clearing of interface stat: never
Interface upstream 11/14.1 statistics
Admin status: UP
Channel utilization interval: 30
Avg upstream channel utilization: 27
Avg percent contention slots: 72
Avg percent initial ranging slots: 1
Avg percent minislots lost on late MAPs: 0
Logical-channel 0
Received 38222 broadcasts, 6215604 multicasts, 3538258090 unicasts
1346 discards, 124898850 errors, 66 unknown protocol
5845104114 Unerroreds, 218284619 Correcteds, 669479 Uncorrectables
Total Modems On This Upstream Channel: 81 ,81 active cm,199 secondary cm
Req Mslots 837832312, Used Req Mslots 1940816976
Init Mtn Mslots 1587480963, Used Init Mtn Mslots 0
Total Mslots 1305490788, Ucast Granted Mslots 3013593419
Admin status: UP
Last clearing of interface stat: never
Logical-channel 1
Received 0 broadcasts, 0 multicasts, 0 unicasts
0 discards, 0 errors, 0 unknown protocol
0 Unerroreds, 0 Correcteds, 0 Uncorrectables
Total Modems On This Upstream Channel: 81 ,81 active cm,199 secondary cm
Req Mslots 0, Used Req Mslots 0
Init Mtn Mslots 0, Used Init Mtn Mslots 0
Total Mslots 0, Ucast Granted Mslots 0
Admin status: DOWN
Last clearing of interface stat: never
Interface upstream 11/14.2 statistics
Admin status: UP
Channel utilization interval: 30
Avg upstream channel utilization: 25
Avg percent contention slots: 73
Avg percent initial ranging slots: 1
Avg percent minislots lost on late MAPs: 0
Logical-channel 0
Received 19164 broadcasts, 5556535 multicasts, 3172039663 unicasts
21321 discards, 154901101 errors, 7542 unknown protocol
6717596120 Unerroreds, 207655565 Correcteds, 998096 Uncorrectables
Total Modems On This Upstream Channel: 71 ,77 active cm,200 secondary cm
Req Mslots 677645024, Used Req Mslots 1988677752
Init Mtn Mslots 1587478839, Used Init Mtn Mslots 0
Total Mslots 1336440878, Ucast Granted Mslots 3204737761
Admin status: UP
Last clearing of interface stat: never
Logical-channel 1
Received 0 broadcasts, 0 multicasts, 0 unicasts
0 discards, 0 errors, 0 unknown protocol
0 Unerroreds, 0 Correcteds, 0 Uncorrectables
Total Modems On This Upstream Channel: 71 ,77 active cm,200 secondary cm
Req Mslots 0, Used Req Mslots 0
Init Mtn Mslots 0, Used Init Mtn Mslots 0
Total Mslots 0, Ucast Granted Mslots 0
Admin status: DOWN
Last clearing of interface stat: never
Interface upstream 11/14.3 statistics
Admin status: UP
Channel utilization interval: 30
Avg upstream channel utilization: 23
Avg percent contention slots: 76
Avg percent initial ranging slots: 1
Avg percent minislots lost on late MAPs: 0
Logical-channel 0
Received 68548 broadcasts, 9559874 multicasts, 526854672 unicasts
1439 discards, 84453687 errors, 169 unknown protocol
4669257119 Unerroreds, 280051356 Correcteds, 2122408 Uncorrectables
Total Modems On This Upstream Channel: 63 ,66 active cm,202 secondary cm
Req Mslots 801892000, Used Req Mslots 1215898828
Init Mtn Mslots 1587354585, Used Init Mtn Mslots 0
Total Mslots 1289948770, Ucast Granted Mslots 3033722767
Admin status: UP
Last clearing of interface stat: never
Logical-channel 1
Received 0 broadcasts, 0 multicasts, 0 unicasts
0 discards, 0 errors, 0 unknown protocol
0 Unerroreds, 0 Correcteds, 0 Uncorrectables
Total Modems On This Upstream Channel: 63 ,66 active cm,202 secondary cm
Req Mslots 0, Used Req Mslots 0
Init Mtn Mslots 0, Used Init Mtn Mslots 0
Total Mslots 0, Ucast Granted Mslots 0
Admin status: DOWN
Last clearing of interface stat: never
** show interface qam stat **
Interface qam 2/3 statistics
Admin Status: UP
Channel 0
TotalBytes:8451017466488
UsedBytes :6511155351901
Admin Status: UP
Last clearing of interface stat: never
Channel 1
TotalBytes:8451017466491
UsedBytes :6577309976472
Admin Status: UP
Last clearing of interface stat: never
Channel 2
TotalBytes:8451017466498
UsedBytes :6619679375949
Admin Status: UP
Last clearing of interface stat: never
Channel 3
TotalBytes:8451017466492
UsedBytes :6669860974451
Admin Status: UP
Last clearing of interface stat: never
Channel 4
TotalBytes:8451017466478
UsedBytes :6392177345834
Admin Status: UP
Last clearing of interface stat: never
Channel 5
TotalBytes:8451017466478
UsedBytes :6454855282067
Admin Status: UP
Last clearing of interface stat: never
Channel 6
TotalBytes:8451017466474
UsedBytes :6432458948668
Admin Status: UP
Last clearing of interface stat: never
Channel 7
TotalBytes:8451017466464
UsedBytes :6380726867542
Admin Status: UP
Last clearing of interface stat: never
Channel 8
TotalBytes:8451698972140
UsedBytes :5391321773149
Admin Status: UP
Last clearing of interface stat: never
Channel 9
TotalBytes:8451698972140
UsedBytes :5276448031898
Admin Status: UP
Last clearing of interface stat: never
Channel 10
TotalBytes:8451698972146
UsedBytes :5178585147872
Admin Status: UP
Last clearing of interface stat: never
Channel 11
TotalBytes:8451698972141
UsedBytes :5160522015094
Admin Status: UP
Last clearing of interface stat: never
Channel 12
TotalBytes:8451698972140
UsedBytes :5603372826610
Admin Status: UP
Last clearing of interface stat: never
Channel 13
TotalBytes:8451698972139
UsedBytes :5601237637851
Admin Status: UP
Last clearing of interface stat: never
Channel 14
TotalBytes:8451698972125
UsedBytes :5689709337955
Admin Status: UP
Last clearing of interface stat: never
Channel 15
TotalBytes:8451698972140
UsedBytes :5683609060992
Admin Status: UP
Last clearing of interface stat: never
Channel 16
TotalBytes:8451779228673
UsedBytes :5330041947864
Admin Status: UP
Last clearing of interface stat: never
Channel 17
TotalBytes:8451779228674
UsedBytes :5192262222304
Admin Status: UP
Last clearing of interface stat: never
CASA-C100G#show upstream signal-quality | include 11/14
11/14.0/0 34.4
11/14.0/1 0.0
11/14.1/0 35.1
11/14.1/1 0.0
11/14.2/0 36.1
11/14.2/1 0.0
11/14.3/0 33.7
11/14.3/1 0.0
11/14.4/0 0.0
11/14.4/1 0.0
11/14.5/0 0.0
11/14.5/1 0.0
11/14.6/0 0.0
11/14.6/1 0.0
11/14.7/0 0.0
11/14.7/1 0.0
channel utilization at the time of the test (low)
CASA-C100G#show docsis upstream channel utilization | include 11/14
11/14.0 (40000000 Hz) 15.4 19 113 187 Bellavista
11/14.1 (36000000 Hz) 15.4 21 81 199 Bellavista
11/14.2 (32000000 Hz) 15.4 18 77 200 Bellavista
11/14.3 (28000000 Hz) 15.4 14 66 202 Bellavista
CASA-C100G#show cable modem 7cbf.b15d.2691 verbose
MAC Address :7cbf.b15d.2691
IP Address :10.8.170.67
MAC Status :online(pt)
CM-ID :38664
Prim Sid :6844
MAC Domain :20
Service-Group :nodo95
Upstream Channel Set :11/14.0/0, 11/14.1/0, 11/14.2/0, 11/14.3/0
Downstream Channel Set :2/3/17, 2/3/1, 2/3/2, 2/3/3, 2/3/14, 2/3/15, 2/3/16, 2/3/0
Unusable channel list :
Upstream Channel :11/14.0/0 11/14.1/0 11/14.2/0 11/14.3/0
Ranging Status :RNG_SUCCESS RNG_SUCCESS RNG_SUCCESS RNG_SUCCESS
Upstream SNR (dB) :36.1 33.7 35.1 36.7
Received Power (dBmV) : 8.0 7.2 7.7 8.0
Reported Transmit Power (dBmV) :41.5 41.0 41.2 40.5
Peak Transmit Power (dBmV) :57.0 57.0 57.0 57.0
Phy Max Power (dBmV) :54.0 54.0 54.0 54.0
Minimum Transmit Power (dBmV) :20.0 20.0 20.0 20.0
Reported Max Total Power Output (dBmV) :-
RCP ID :00 10 18 80 61
Timing Offset :2254
Initial Timing Offset :2255
Received Power :8 dBmV
MAC Version :DOC3.0
Qos Provisioned Mode :DOC1.1
Enable DOCSIS2.0 Mode :Y
Extended Upstream Transmit Power :54
Initial Ranging Message :B-INIT-RNG-REQ
Registration Request Message :REG-REQ-MP
Phy Operating Mode :atdma
Capabilities :{Frag=Y, Concat=Y, PHS=Y, Priv=BPI+}
Optional Filtering Support :{802.1P=N, 802.1Q=N}
BPI encrypt algorithm :DES-56
DSID Capability (Usage) :{Total=32(1), Reseq=16(1), Mcast=16(0), 309312, MDF=0}
Number of CPE IPs :1
CFG Max-CPE :16
CFG Max-IPV6-CPE :16
CFG Max-IPV6-PD-CPE :3
Submgt Active :Off
Submgt Learnable :On
Submgt cm-filter-downstream :0
Submgt cm-filter-upstream :0
Submgt cpe-filter-downstream :0
Submgt cpe-filter-upstream :0
Submgt ps-filter-downstream :0
Submgt ps-filter-upstream :0
Submgt mta-filter-downstream :0
Submgt mta-filter-upstream :0
Submgt stb-filter-downstream :0
Submgt stb-filter-upstream :0
Errors :0 CRCs,1 HCSes
Stn Mtn Failures :0 aborts,0 exhausted
Total US Flows :1
Total DS Flows :1
Total US Data :42301 packets,7994378 bytes
US v6Data :0 packets,0 bytes
Total US Throughput :2 kbits/sec,2 packets/sec
Total DS Data :46123 packets,30824387 bytes
DS v6Data :0 packets,0 bytes
Total DS Throughput :2 kbits/sec,3 packets/sec
Upstream Dropped Packets :0
Active Classifiers :0
DSA/DSX messages :permit all
DUT CMIM :0x0
Total Time Online :0 d, 14 h, 9 m, 46 s
Configuration file name :20mb_down_3mb_up_4pc.cfg
sysDescr :TWC AWG Cable Modem: <>
CASA-C100G#show cable modem 7cbf.b15d.2691 qos verbose
Mac Addr : 7cbf:b15d:2691
Sfid :633470981
Current State : Active
Sid :6844
application-class: 0
Traffic Priority :0
Maximum Sustained rate : 3072 kbps
Maximum Burst : 20000 bytes
Minimum Reserved rate : 0 kbps
Minimum Packet Size : 0 bytes
Peak Traffic Rate : 0 kbps
Admitted QoS Timeout : 0 seconds
Active QoS Timeout : 0 seconds
Maximum Concatenated Burst : 1522 bytes
max-buff-size : 0 bytes
min-buff-size : 0 bytes
tar-buff-size : 0 bytes
Scheduling Type : Best Effort
Request/Transmission policy : 0x0
IP ToS Overwrite[AND-mask, OR-mask] : 0xff, 0x0
Current Throughput : 1 kbps, 1 packets/sec
Contention request : 31911
Piggyback request : 3968
Grants scheduled : 34047
Grants not used : 0
Polling Grants scheduled : 0
Token bucket(min reserved bytes) : 0
Packet received : 42491
Bytes received : 8027511 (bytes)
v6 Packets rcvd : 0
v6 Bytes rcvd : 0 (bytes)
Packet dropped : 0
HCS errors : 1
CRC errors : 0
Pending bytes : 0
Sfid :633479174
Current State : Active
Sid :N/A
application-class: 0
Traffic Priority :0
Maximum Sustained rate : 20480 kbps
Maximum Burst : 8000 bytes
Minimum Reserved rate : 0 kbps
Minimum Packet Size : 0 bytes
Peak Traffic Rate : 0 kbps
Admitted QoS Timeout : 0 seconds
Active QoS Timeout : 0 seconds
max-buff-size : 0 bytes
min-buff-size : 0 bytes
tar-buff-size : 0 bytes
IP ToS Overwrite[AND-mask, OR-mask] : 0xff, 0x0
Current Throughput : 0 kbps, 0 packets/sec
Packet received : 46357
Bytes received : 30948047 (bytes)
v6 Packets rcvd: 0
v6 Bytes rcvd : 0
Packet dropped : 0 (bytes)
CASA-C100G#
That is the right information, though because you only ran it once, it is not terribly useful. Could you run it again and all commands in order twice. This will allow us to get a rate for all the counters and we can see something that may be causing the issue.
One thing I did note:
your upstream RxPower is set to 8 dB, and you have extended upstream transmit turned on, that seems counter productive...
In the US usually the target RxPower should be 0 and the modem should transmit at about 45 ish to hit the CMTS at zero dB. In other words there should be about 42-48 dB of attentuation between cable modem and CMTS. with your settings you have adjusted the target RxPower up 8 dB and then told the modems they have to transmit higher to reach the new target. Running them both at the same time may cause your modems to transmit much higher than they should normally and could cause some of the issues your seeing. They also indicate that the return may not be setup correctly and may need to be adjusted.
also another thread reminded me: make sure you have sun-rpc blocked
ip access-list sunrpc-in
deny all any any any any
deny6 all any any any any
sunrpc access-group sunrpc-in in
Casa CMTS uses linux at its core which has a service called sun-rpc it uses internally for communication between cards on the Casa, however, this service does not need to run on external interfaces. If left open, port scanners will find an open RPC port and will try and exploit it. This traffic will all go straight to the SMM and use up precious CPU cycles and can have strange effects, like slow DHCP, dropped packets among others. The above stanza disables/blocks RPC on all public facing interfaces.