Im trying configure for the first time ubr10k. We have some ubr7k and we want migrate to the new one. We work with docsis 1.1 and now we need work with docsis 1.1 and 3.0 for the new modems.
Im trying put all modems working, but the speed is very bad, sometimes i cant test the speed. I lose packets to outside.
My configuration is:
card 1 4jacket-1
card 1/2 SPA-5X1GE-V2
card 1/3 SPA-1XTENGE-XFP-V2
card 1/1 2cable-dtcc
card 2/1 2cable-dtcc
card 8/0 ubr10k-clc-mc2020v license 20X20
cable admission-control preempt priority-voice
!
cable service attribute ds-bonded downstream-type bonding-enabled enforce
cable service attribute non-ds-bonded downstream-type bonding-disabled
no cable qos permission create
no cable qos permission update
cable qos permission modems
!
cable logging badipsource
cable logging layer2events
cable logging overlapip
cable logging ironbus
cable logging downstream-index
cable clock dti
cable load-balance docsis-enable
cable load-balance docsis30-enable
cable load-balance modem max-failures 2
controller Integrated-Cable 8/0/0
rf-channel 0 cable downstream channel-id 145
rf-channel 0 frequency 698000000 annex A modulation 256qam interleave 12
rf-channel 0 rf-power 52.0
no rf-channel 0 rf-shutdown
rf-channel 1 cable downstream channel-id 146
rf-channel 1 frequency 706000000 annex A modulation 256qam interleave 12
rf-channel 1 rf-power 52.0
no rf-channel 1 rf-shutdown
rf-channel 2 cable downstream channel-id 147
rf-channel 2 frequency 714000000 annex A modulation 256qam interleave 12
rf-channel 2 rf-power 52.0
no rf-channel 2 rf-shutdown
rf-channel 3 cable downstream channel-id 148
rf-channel 3 frequency 722000000 annex A modulation 256qam interleave 12
rf-channel 3 rf-power 52.0
no rf-channel 3 rf-shutdown
!
interface GigabitEthernet1/2/0
mtu 9180
ip address xxx.xxx.xxx.xxx 255.255.255.224
ip access-group 101 in
ip access-group 101 out
no ip redirects
no ip proxy-arp
ip flow ingress
negotiation auto
interface Cable8/0/0
downstream Integrated-Cable 8/0/0 rf-channel 0-3
cable tftp-enforce mark-only
cable mtc-mode
no cable packet-cache
cable default-phy-burst 0
cable map-advance dynamic 600 1000
cable bundle 1
cable upstream max-ports 4
cable upstream bonding-group 1
upstream 0
upstream 1
upstream 2
upstream 3
attributes 80000000
cable upstream 0 connector 0
cable upstream 0 frequency 38000000
cable upstream 0 channel-width 3200000 1600000
cable upstream 0 power-level 3
cable upstream 0 docsis-mode atdma
cable upstream 0 minislot-size 2
cable upstream 0 power-adjust continue 8
cable upstream 0 range-backoff 3 6
cable upstream 0 modulation-profile 221
no cable upstream 0 shutdown
cable upstream 1 connector 0
cable upstream 1 frequency 42000000
cable upstream 1 channel-width 3200000 1600000
cable upstream 1 power-level 3
cable upstream 1 docsis-mode atdma
cable upstream 1 minislot-size 2
cable upstream 1 power-adjust continue 8
cable upstream 1 range-backoff 3 6
cable upstream 1 modulation-profile 221
no cable upstream 1 shutdown
cable upstream 2 connector 2
cable upstream 2 frequency 46000000
cable upstream 2 channel-width 3200000 1600000
cable upstream 2 power-level 3
cable upstream 2 docsis-mode atdma
cable upstream 2 minislot-size 2
cable upstream 2 power-adjust continue 8
cable upstream 2 range-backoff 3 6
cable upstream 2 modulation-profile 221
no cable upstream 2 shutdown
cable upstream 3 connector 3
cable upstream 3 frequency 34000000
cable upstream 3 channel-width 3200000 1600000
cable upstream 3 power-level 3
cable upstream 3 docsis-mode atdma
cable upstream 3 minislot-size 2
cable upstream 3 power-adjust continue 8
cable upstream 3 range-backoff 3 6
cable upstream 3 modulation-profile 221
no cable upstream 3 shutdown
no keepalive
interface Integrated-Cable8/0/0:0
cable bundle 1
cable rf-bandwidth-percent 25 remaining ratio 2
!
interface Integrated-Cable8/0/0:1
cable bundle 1
cable rf-bandwidth-percent 25 remaining ratio 2
!
interface Integrated-Cable8/0/0:2
cable bundle 1
cable rf-bandwidth-percent 25 remaining ratio 2
!
interface Integrated-Cable8/0/0:3
cable bundle 1
cable rf-bandwidth-percent 25 remaining ratio 2
!
interface Wideband-Cable8/0/0:0
cable bundle 1
cable rf-channel 0 bandwidth-percent 50
cable rf-channel 1 bandwidth-percent 50
cable rf-channel 2 bandwidth-percent 50
cable rf-channel 3 bandwidth-percent 50
!
interface Bundle1
ip address xxx.xxx.xxx.xxx 255.255.255.0 secondary
ip address xxx.xxx.xxx.xxx 255.0.0.0
ip access-group 110 in
cable arp filter request-send 3 2
cable arp filter reply-accept 3 2
cable dhcp-giaddr policy
cable helper-address xxx.xxx.xxx.xxx cable-modem
cable helper-address xxx.xxx.xxx.xxx host
!
cable fiber-node 1
downstream Integrated-Cable 8/0/0 rf-channel 0-3
upstream Cable 8/0 connector 0-3
!
end
The bandwidth precent still has me confused but this is how I understand it. Someone may need to double check my math but, Looking at intergraded cable 8/0/0:0, you're allocating 25% of 50Mb(about max 8MHz downstream bandwidth @256QAM) and 2% of what's left over of Wideband8/0/0:0 rf-channel 0, you've used 50% for Wideband so that leaves 25Mbps.
So, 12.5Mbps(25%)+500kbps(2% remaining) would be max of 13Mbps on I8/0/0:0.
I run mine as follows.
interface Wideband-Cable1/0:0
cable bundle 1
cable rf-channel 0 bandwidth-percent 5 remaining ratio 100
cable rf-channel 1 bandwidth-percent 5 remaining ratio 100
cable rf-channel 2 bandwidth-percent 5 remaining ratio 100
cable rf-channel 3 bandwidth-percent 5 remaining ratio 100
!
interface Integrated-Cable1/0:0
cable bundle 1
cable rf-bandwidth-percent 5 remaining ratio 100
!
interface Integrated-Cable1/0:1
cable bundle 1
cable rf-bandwidth-percent 5 remaining ratio 100
!
This way each downstream channel has some bandwidth but either Wideband or Narrowband can use up too 100% of the available bandwidth per rd-channel.
that's some old school math there. Why don't you just enable acfe and let the CMTS handle it for you?
Can you explain "ACFE"?
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/cmts_acfe....
Instead of hard setting your modular cable percents, you let the scheduler manage the available bandwidth between the narrow and wideband shared qams.
We just have 7200's. Specs call for a 10k and at least SCF. I'm on SCG, without a Cisco login for IOS.
! these ones are a little suspect, I dont have them on my 20x20 system :
cable service attribute ds-bonded downstream-type bonding-enabled enforce
cable service attribute non-ds-bonded downstream-type bonding-disabled
cable clock dti
! if you are playing around with L2 MTU, be careful you havent broken your L3 MTU
! try adding this in
int gig1/2/0
ip mtu 1500
! some suggested tweaks for your mac-domain config
int cable 8/0/0
! noise/signal related
cable upstream 0 ingress-noise-cancellation 10
cable upstream 1 ingress-noise-cancellation 10
cable upstream 2 ingress-noise-cancellation 10
cable upstream 3 ingress-noise-cancellation 10
cable upstream 0 equalization-coefficient
cable upstream 1 equalization-coefficient
cable upstream 2 equalization-coefficient
cable upstream 3 equalization-coefficient
! upstream performance related
cable upstream 0 minislot-size 4
cable upstream 1 minislot-size 4
cable upstream 2 minislot-size 4
cable upstream 3 minislot-size 4
! Some suggested tweaks for your dynamic bandwidth sharing.
! Make sure you have remaining ratio set to 100 NB and WB interfaces can burst into any unused capacity.
interface integrated-cable 8/0/0:0
cable rf-bandwidth-percent 25 remaining ratio 100
interface integrated-cable 8/0/0:1
cable rf-bandwidth-percent 25 remaining ratio 100
interface integrated-cable 8/0/0:2
cable rf-bandwidth-percent 25 remaining ratio 100
interface integrated-cable 8/0/0:3
cable rf-bandwidth-percent 25 remaining ratio 100
interface Wideband-Cable8/0/0:0
cable rf-channel 0 bandwidth-percent 5 remaining ratio 100
cable rf-channel 1 bandwidth-percent 5 remaining ratio 100
cable rf-channel 2 bandwidth-percent 5 remaining ratio 100
cable rf-channel 3 bandwidth-percent 5 remaining ratio 100
Yesterday i made a speetest and i get 168Mb/46Mb, after restart de cmts i cant get the same results. i dont change anything.
Today Modem signals:
Downstream Channels (Partial Service)
Channel Lock Status Modulation Channel ID Symbol rate Frequency Power SNR
1 Locked QAM64 145 5056941 1.0 dBmV 46.0 dB
2 Locked QAM64 146 5056941 1.3 dBmV 46.2 dB
3 Locked QAM64 147 5056941 1.0 dBmV 46.0 dB
4 Locked QAM64 148 5056941 -46.2 dBmV 29.1 dB
5 Not Locked Unknown 0 Unknown 0.0 dBmV 0.0 dB
6 Not Locked Unknown 0 Unknown 0.0 dBmV 0.0 dB
7 Not Locked Unknown 0 Unknown 0.0 dBmV 0.0 dB
8 Not Locked Unknown 0 Unknown 0.0 dBmV 0.0 dB
Ustream Channels (Partial Service)
Channel Lock Status Modulation Channel ID Symbol Rate Frequency Power
1 Locked QAM32 2 2560 Ksym/sec 43.7 dBmV
2 Locked QAM32 1 2560 Ksym/sec 43.7 dBmV
3 Locked QAM32 3 2560 Ksym/sec 43.7 dBmV
4 Locked QAM32 4 2560 Ksym/sec 43.7 dBmV
Router#show cab modem 80c6.aba3.8f75 verbose
MAC Address : 80c6.aba3.8f75
IP Address : 10.9.168.57
IPv6 Address : ---
Dual IP : N
Prim Sid : 2
Host Interface : C8/0/0/p
MD-DS-SG / MD-US-SG : 1 / 1
MD-CM-SG : 0x5A0101
Primary Wideband Channel ID : 3073 (Wi8/0/0:0)
Primary Downstream : In8/0/0:0 (RfId : 2304)
Wideband Capable : Y
RCP Index : 3
RCP ID : 00 10 00 10 04
Downstream Channel DCID RF Channel : 145 8/0/0:0
Downstream Channel DCID RF Channel : 146 8/0/0:1
Downstream Channel DCID RF Channel : 147 8/0/0:2
Downstream Channel DCID RF Channel : 148 8/0/0:3
Extended Upstream Transmit Power : 0dB
Multi-Transmit Channel Mode : Y
Partial-Mode Information : reason 0x1 failed-tcs 0x4
Number of US in UBG : 4
Upstream Channel : US0 US1 US2 US3
Ranging Status : sta sta dr sta
Upstream SNR (dB) : 36.12 36.12 36.12 36.12
Upstream Data SNR (dB) : -- -- -- --
Received Power (dBmV) : 2.50 3.00 3.00 3.50
Reported Transmit Power (dBmV) : 43.75 43.75 43.75 43.75
Peak Transmit Power (dBmV) : 51.00 51.00 51.00 51.00
Phy Max Power (dBmV) : 51.00 51.00 51.00 51.00
Minimum Transmit Power (dBmV) : 21.00 21.00 21.00 21.00
Timing Offset (97.6 ns): 2548 2548 2548 2520
Initial Timing Offset : 2264 2264 2264 2520
Rng Timing Adj Moving Avg(0.381 ns): -1 0 142 -1
Rng Timing Adj Lt Moving Avg : 17 0 2731 -7
Rng Timing Adj Minimum : -256 -256 0 -256
Rng Timing Adj Maximum : 72704 72704 72704 0
Pre-EQ Good : 41 54 5 47
Pre-EQ Scaled : 0 0 0 0
Pre-EQ Impulse : 0 0 0 0
Pre-EQ Direct Loads : 0 0 0 0
Good Codewords rx : 359 562 47 75
Corrected Codewords rx : 0 0 0 0
Uncorrectable Codewords rx : 0 0 0 0
Phy Operating Mode : atdma* atdma* atdma* atdma*
sysDescr :
Downstream Power : 0.00 dBmV (SNR = ----- dB)
MAC Version : DOC3.0
QoS Provisioned Mode : DOC1.1
Enable DOCSIS2.0 Mode : Y
Modem Status : {Modem= w-online(pt), Security=assign(tek)}
Capabilities : {Frag=N, Concat=N, PHS=Y}
Security Capabilities : {Priv=BPI+, EAE=Y, Key_len=56,128}
L2VPN Capabilities : {L2VPN=N, eSAFE=N}
Sid/Said Limit : {Max US Sids=16, Max DS Saids=15}
Optional Filtering Support : {802.1P=N, 802.1Q=N, DUT=N}
Transmit Equalizer Support : {Taps/Symbol= 1, Num of Taps= 24}
Number of CPE : 1(Max CPE = 2)
Number of CPE IPs : 1(Max CPE IPs = 16)
CFG Max-CPE : 2
Flaps : 66(Nov 13 11:06:36)
Errors : 0 CRCs, 0 HCSes
Stn Mtn Failures : 0 aborts, 17 exhausted
Total US Flows : 1(1 active)
Total DS Flows : 1(1 active)
Total US Data : 551 packets, 55405 bytes
Total US Throughput : 879 bits/sec, 0 packets/sec
Total DS Data : 673 packets, 389333 bytes
Total DS Throughput : 1427 bits/sec, 0 packets/sec
LB group ID assigned (index) : N/A (N/A)
LB group ID in config file (index) : N/A (N/A)
LB policy ID : 0
LB policy ID in config file : 0
LB priority : 0
Tag :
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0x0
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
Service Type ID :
Service Type ID in config file :
Ranging Class ID : 0x2
Active Classifiers : 0 (Max = 2)
CM Upstream Filter Group : 0
CM Downstream Filter Group : 0
CPE Upstream Filter Group : 0
CPE Downstream Filter Group : 0
DSA/DSX messages : permit all
Voice Enabled : NO
DS Change Times : 0
Boolean Services : 2
Number of Multicast DSIDs Support : 16
MDF Capability Mode : 2
IGMP/MLD Version : IGMPv3
FCType10 Forwarding Support : Y
Features Bitmask : 0x0
Total Time Online : 17:01 (17:01 since last counter reset)
CM Initialization Reason : NO_PRIM_SF_USCHAN
CFG Max IPv6 CPE Prefix : 16 (-1 used)
CMTS
Router#show cabl modem
D
MAC Address IP Address I/F MAC Prim RxPwr Timing Num I
State Sid (dBmv) Offset CPE P
80c6.aba3.8f7a 10.9.167.161 C8/0/0/p p-online(pt) 1 3.00 2517 1 N
80c6.aba3.8f75 10.9.168.57 C8/0/0/p w-online(pt) 2 3.50 2520 1 N
8c04.ff1b.27d3 10.9.168.54 C8/0/0/p init(t) 3 4.00 2511 0 N
The timming Offset, yesterday was very lower (500-700).
could you paste the "show cable modem MAC_ADDRESS_OF_CM qos" please.
Yes, sure.
Router#show cab modem 80c6.aba3.8f75 qos
Sfid Dir Curr Sid Sched Prio MaxSusRate MaxBrst MinRsvRate Throughput
State Type
13 US act 2 BE 0 0 16000 0 732
14 DS act N/A N/A 0 0 50000 0 13998
Router#show cabl modem mac
MAC Address MAC Prim Ver QoS Frag Concat PHS Priv DS US
State Sid Prov Saids Sids
80c6.aba3.8f7a p-online(pt) 1 DOC3.0 DOC1.1 no no yes BPI+ 15 16
80c6.aba3.8f75 w-online(pt) 2 DOC3.0 DOC1.1 no no yes BPI+ 15 16
8c04.ff1b.27d3 init(t) 3 DOC3.0 DOC1.1 no no yes 15 16
Router#
Thanks
> Today Modem signals:
> Downstream Channels (Partial Service)
> Channel Lock Status Modulation Channel ID Symbol rate Frequency Power SNR
> 1 Locked QAM64 145 5056941 1.0 dBmV 46.0 dB
> 2 Locked QAM64 146 5056941 1.3 dBmV 46.2 dB
> 3 Locked QAM64 147 5056941 1.0 dBmV 46.0 dB
> 4 Locked QAM64 148 5056941 -46.2 dBmV 29.1 dB
> 5 Not Locked Unknown 0 Unknown 0.0 dBmV 0.0 dB
> 6 Not Locked Unknown 0 Unknown 0.0 dBmV 0.0 dB
> 7 Not Locked Unknown 0 Unknown 0.0 dBmV 0.0 dB
> 8 Not Locked Unknown 0 Unknown 0.0 dBmV 0.0 dB
DS 1 to 4 are showing 64QAM whereas your running conf said 256QAM
DS 1 to 3 have OK signal levels
DS 4 has terrible signal levels
DS 5-8 cant even be seen any more
Have you been tinkering with the CMTS config? Making changes to the headend wiring or combining?
Do you have a spectrum analyser you can plug in and inspect the downstreams?
I find the problem.
When i restart the ubr10k i have problems with the QAM256. I need change the downstream to 64QAM and all modems works well, then i change again to 256QAM i all modems start working with 256QAM.
I think this problem is not normal, someone have this problem?
Default is 64QAM. However, the IOS allows you to change to 256QAM if so desired.
Higher modulation schema, higher SNR level require on HF Plant. What is your SNR on your HF plant ?