Cisco docsis 3.0 questions ubr10K

Hi Folks,

We use casa C2200 CMTS for our d3.0 platform.
I have commisioned a uBR10k and the statistics puzzle me.
I have 2 bonded downstreams active QAM64 and 1 upstream. I am using cab 8/0/1

controller Integrated-Cable 8/0/1
rf-channel 0 cable downstream channel-id 173
rf-channel 0 frequency 285000000 annex B modulation 64qam interleave 32
rf-channel 0 rf-power 54.0
no rf-channel 0 rf-shutdown
rf-channel 1 cable downstream channel-id 174
rf-channel 1 frequency 291000000 annex B modulation 64qam interleave 32
rf-channel 1 rf-power 54.0
no rf-channel 1 rf-shutdown


interface Cable8/0/1
downstream Integrated-Cable 8/0/1 rf-channel 0-1 upstream 0-1
cable mtc-mode
no cable packet-cache
cable default-phy-burst 4096
cable bundle 2
cable upstream max-ports 4
cable upstream bonding-group 2
attributes 80000000
cable upstream ranging-poll interval 25000
cable upstream 0 connector 4
cable upstream 0 frequency 28300000
cable upstream 0 channel-width 3200000 3200000
cable upstream 0 ingress-noise-cancellation 400
cable upstream 0 power-level 3
cable upstream 0 description "South 285MHz BLUE"
cable upstream 0 docsis-mode tdma
cable upstream 0 minislot-size 2
cable upstream 0 range-backoff 3 6
cable upstream 0 modulation-profile 21
cable upstream 0 equalization-coefficient
cable upstream 0 rate-adapt priority 6 rate 30000000
no cable upstream 0 shutdown
cable upstream 1 connector 5
cable upstream 1 frequency 37900000
cable upstream 1 channel-width 3200000 3200000
cable upstream 1 ingress-noise-cancellation 400
cable upstream 1 power-level 3
cable upstream 1 description "South 291MHz GREEN"
cable upstream 1 docsis-mode tdma
cable upstream 1 minislot-size 2
cable upstream 1 range-backoff 3 6
cable upstream 1 modulation-profile 21
cable upstream 1 equalization-coefficient
cable upstream 1 rate-adapt priority 6 rate 30000000
no cable upstream 1 shutdown



interface Integrated-Cable8/0/1:1
cable bundle 2
cable rf-bandwidth-percent 50


interface Wideband-Cable8/0/1:1
cable bundle 2
cable rf-channel 0 bandwidth-percent 50
cable rf-channel 1 bandwidth-percent 50

I am seeing the correct customer traffic levels on the switch so I'm puzzled:

Switch Stats:
Output rate : 34017080 bps (3261 pps)

CMTS Stats with questions:
Ubr10k#show interface Integrated-Cable8/0/1:0
Integrated-Cable8/0/1:0 is down, line protocol is down
Hardware is CMTS IC interface, address is 0022.90de.65b1 (bia 0022.90de.65b1)
MTU 1764 bytes, BW 26000 Kbit, DLY 1000 usec, >> Seems ok

Ubr10k#show interface Integrated-Cable8/0/1:1
Integrated-Cable8/0/1:1 is down, line protocol is down
Hardware is CMTS IC interface, address is 0022.90de.65b1 (bia 0022.90de.65b1)
MTU 1764 bytes, BW 26000 Kbit, DLY 1000 usec, >> Seems ok

Ubr10k#show interface Wideband-Cable8/0/1:1
Wideband-Cable8/0/1:1 is up, line protocol is down
Hardware is Wideband CMTS Cable interface, address is 0022.90de.65b1 (bia 0022.90de.65b1)
MTU 1500 bytes, BW 52000 Kbit, DLY 1000 usec, >> Seems ok

Ubr10k#show interface Cable8/0/1
Cable8/0/1 is up, line protocol is up
Hardware is UBR10000 CLC, address is 0022.90de.65b1 (bia 0022.90de.65b1)
MTU 1500 bytes, BW 26000 Kbit, DLY 1000 usec, >> Is this reporting non bonded speed?

Ubr10k#show int cab 8/0/1 downstream
Cable8/0/1: Downstream is up, IF output is up
0 packets output, 0 bytes, 0 discarded
0 output errors
483 total active devices, 213 active modems
Total downstream bandwidth: 30341 Kbps
Total downstream reserved/reservable bandwidth: 0/24273 Kbps
Estimated usable bandwidth: 26000 Kbps >> Same here?

Ubr10k#show interface Integrated-Cable8/0/1:1 downstream
In8/0/1:1: Downstream is up
Total Modems 120 (118 active), Total Flows 121
Total downstream bandwidth: 13000 Kbps >> Why is the bandwidth halved?
Total downstream reserved/reservable bandwidth: 0/10400 Kbps
Total downstream guaranteed/non-guaranteed bonus bandwidth: 0/0 Kbps
Ubr10k#

However traffic on the switch shows more.

We are still getting our heads around Ciscos methods for implemeting docsis 3.0 compared to Casa.

All help and tips appreciated.

Thanks,
Chris.