You are here

Bonding more than 8 downstream channels on Casa c3200

2 posts / 0 new
Last post
xarafaxz
Bonding more than 8 downstream channels on Casa c3200

Hello.

I can't force my 16x4 and 24x8 cable modemes (TC7210, TG2492 and more) to utilize my 12x downstream configuration.

Also i can't force any fullband capture modems (like TC7200) to use spaced downstream configuration.

# cable modem 3870.0c34.b922 dbc downstream-list 1,2,3,4,5,6,7,8,9,10,11,12 ini di

# show load-balance dynamic | i 3870.0c34.b922
...
3870.0c34.b922 11->11 1,3,4,5->- 1,2,3,4,5,6,7,8->1,2,3,4,5,6,7,8,9,10,11,12 direct dbc cmtsRejected CLI 2017-11-29 11:41:34

# cable modem 3870.0c34.b922 dbc downstream-list 1,2,3,4,7,8,9,10 ini di
# show load-balance dynamic | i 3870.0c34.b922
3870.0c34.b922 11->11 1,3,4,5->- 1,2,3,4,5,6,7,8->1,2,3,4,7,8,9,10 direct dbc cmtsRejected CLI 2017-11-29 11:42:36

Modems with double tuners (like CM820, EPC3010) can use spaced downstreams fine.

show version
Running Image: SMM Rel 6.1, Ver 2,build47, Wed Apr 17 15:36:38 EDT 2013,(relmgr)
Configured boot device: flash1
flash1: SMM Rel 6.1, Ver 2,build47, Wed Apr 17 15:36:38 EDT 2013, ( relmgr)
flash2: SMM Rel 6.1.4, Ver 1,build2a79, Wed Oct 15 19:57:28 EDT 2014, ( relmgr)

QAM config:

interface qam 0/0
no spectral inversion on
annex A
modulation 256qam
interleave 12
power 500
channel 0 frequency 754000000
no channel 0 shutdown
channel 1 frequency 762000000
no channel 1 shutdown
channel 2 frequency 770000000
no channel 2 shutdown
channel 3 frequency 778000000
no channel 3 shutdown
no shutdown
!

interface qam 0/1
no spectral inversion on
annex A
modulation 256qam
interleave 12
power 465
channel 0 frequency 754000000
no channel 0 shutdown
channel 1 frequency 762000000
no channel 1 shutdown
channel 2 frequency 770000000
no channel 2 shutdown
channel 3 frequency 778000000
no channel 3 shutdown
no shutdown
!

interface qam 0/2
no spectral inversion on
annex A
modulation 256qam
interleave 12
power 480
channel 0 frequency 786000000
no channel 0 shutdown
channel 1 frequency 794000000
no channel 1 shutdown
channel 2 frequency 802000000
no channel 2 shutdown
channel 3 frequency 810000000
no channel 3 shutdown
no shutdown
!

interface qam 0/3
no spectral inversion on
annex A
modulation 256qam
interleave 12
power 480
channel 0 frequency 818000000
no channel 0 shutdown
channel 1 frequency 826000000
no channel 1 shutdown
channel 2 frequency 834000000
no channel 2 shutdown
channel 3 frequency 842000000
no channel 3 shutdown
no shutdown
!

docsis mac:

interface docsis-mac 11
...
ip bundle 1
downstream 1 interface qam 0/0/0
downstream 2 interface qam 0/0/1
downstream 3 interface qam 0/0/2
downstream 4 interface qam 0/0/3
downstream 5 interface qam 0/2/0 secondary
downstream 6 interface qam 0/2/1 secondary
downstream 7 interface qam 0/2/2 secondary
downstream 8 interface qam 0/2/3 secondary
downstream 9 interface qam 0/3/0 secondary
downstream 10 interface qam 0/3/1 secondary
downstream 11 interface qam 0/3/2 secondary
downstream 12 interface qam 0/3/3 secondary
upstream 1 interface upstream 3/0.0/0
upstream 2 interface upstream 3/2.0/0
upstream 3 interface upstream 3/0.1/0
upstream 4 interface upstream 3/1.0/0
upstream 5 interface upstream 3/1.1/0
upstream 6 interface upstream 3/2.1/0

Tony
Hi,

Hi,
C3200 doesn't have rcp-id nor rcc for more then 8 channels. You need to configure it manually.

docsis