| Attachment | Size |
|---|---|
 cmts7225config.txt | 16.73 KB |
We have actually a configuration on 7225vxr with two card mc88u where we configure two DS port with one freq. and two other DS port with 4 freq. each. The two first DS port are for legacy modem and D2 and the other are for D3 modem.
Attached, you have the config filtered.
I have a doubt about Load-balance.
It's a good practice to mix all DS port on a Load-balancing group ?
For my point of view, this would be better to create LB group for legacy modem and other with D3 modem.
Executing the command : sh cable modem wideband registered-traditional-docsis
Thats show me some modem are on D2 freq but have Wideband capability, there is not an issue where the load-balance mechanism send D3 modem (when wideband freq. are loaded) to D2 freq. ?
Another point I have doubt is the entry log on 'show log' meaning of :
SLOT 2: $date : %UBR7200-6-CMMOVED: Cable modem x.y.c07f has been moved from interface Cable2/1 to interface Cable2/0.
SLOT 2: $date: %UBR7200-6-CMMOVED: Cable modem x.y.8164 has been moved from interface Cable2/1 to interface Cable2/0.
SLOT 2: $date: %UBR7200-6-CMMOVED: Cable modem x.y.4ab8 has been moved from interface Cable2/1 to interface Cable2/0.
Who provoque this move ? CMTS itself ? LB mechanism ? or the modem ?
Thanks and kind regards, C.
your log entries show your modems moving from one downstream to the other due to load balancing,
however your load balance group is not really valid for your fiber node configuration,
nor are your fiber nodes valid if you want to do docsis 3.0 because you cannot bond downstreams accross cards i.e. cable 1/0 and cable 2/0 in same bonding group.
you don't need to have dedicated downstreams for legacy modems.
There are two different types of docsis load balancing groups one in the style
! for docsis 1.x and 2.0 modems
! can load balance down and upstream
cable load-balance docsis-group 11
! for docsis 3.0 modems
! only load balances upstream because docsis 3.0 can see all the downstreams simultaneously
cable load-balance docsis-group FN 2 MD Cable1/0
They work together and can definitely be used on the same physical downstream and upstream ports
!To get your docsis 3 modems to register as docsis 3 modems use
cable wideband auto-reset
here is what I would do in your situation:
wire the CMTS up like this
Front of CMTS 1 = Node 1 upstreams, 2 = node 2 upstreams, 3 = node 3 upstreams , 4 = node 4 upstreams
______________________________
| 1 1 1 1 2 2 2 2 down1 down2 | cable 1/0 and 1/1
| 3 3 3 3 4 4 4 4 down3 down4 | cable 2/0 and 2/1
______________________________
i.e. each node has 4 downstreams and 4 upstreams the downstreams are shared by both docsis 2.0 and 3.0 modems
cable fiber-node 1
downstream Integrated-Cable 1/0 rf-channel 0-3
upstream Cable 1 connector 0-3
!
cable fiber-node 2
downstream Integrated-Cable 1/1 rf-channel 0-3
upstream Cable 1 connector 4-7
!
cable fiber-node 3
downstream Integrated-Cable 2/0 rf-channel 0-3
upstream Cable 2 connector 0-3
!
cable fiber-node 4
downstream Integrated-Cable 2/1 rf-channel 0-3
upstream Cable 2 connector 4-7
! here's the docsis1.x and 2.0 load balancing group
cable load-balance docsis-group 10
downstream Integrated-Cable 1/0 rf-channel 0-3
upstream Cable1/0 0-3
method utilization
interval 60
threshold load 50
policy pure-ds-load
init-tech-list 4
cable load-balance docsis-group 11
downstream Integrated-Cable 1/1 rf-channel 0-3
upstream Cable1/1 0-3
method utilization
interval 60
threshold load 50
policy pure-ds-load
init-tech-list 4
cable load-balance docsis-group 20
downstream Integrated-Cable 2/0 rf-channel 0-3
upstream Cable2/0 0-3
method utilization
interval 60
threshold load 50
policy pure-ds-load
init-tech-list 4
cable load-balance docsis-group 21
downstream Integrated-Cable 2/1 rf-channel 0-3
upstream Cable2/1 0-3
method utilization
interval 60
threshold load 50
policy pure-ds-load
init-tech-list 4
! here is the docsis 3.0 load balancing group
! this is basically upstream load balancing only because
! docsis 3.0 modems will be locked to all downstreams
! simultaneously
cable load-balance docsis-group FN 1 MD Cable1/0
method utilization
interval 60
threshold load 50
policy pure-ds-load
init-tech-list 4
cable load-balance docsis-group FN 2 MD Cable1/1
method utilization
interval 60
threshold load 50
policy pure-ds-load
init-tech-list 4
cable load-balance docsis-group FN 3 MD Cable2/0
method utilization
interval 60
threshold load 50
policy pure-ds-load
init-tech-list 4
cable load-balance docsis-group FN 4 MD Cable2/1
method utilization
interval 60
threshold load 50
policy pure-ds-load
init-tech-list 4
! you probably want all the downstream frequencies the same accross all the blades, because you physically only
! connect the 1/0 DS0 to node 1 and 1/1 DS1 to node 2 etc... not only that but you only eat up 4 downstream
! frequencies instead of 16 as your current config does.
controller Integrated-Cable 1/0
rf-channel 0 cable downstream channel-id 1
rf-channel 0 frequency 402000000 annex A modulation 256qam interleave 12
rf-channel 0 rf-power 45.0
no rf-channel 0 rf-shutdown
rf-channel 1 cable downstream channel-id 2
rf-channel 1 frequency 410000000 annex A modulation 256qam interleave 12
rf-channel 1 rf-power 45.0
rf-channel 1 rf-shutdown
rf-channel 2 cable downstream channel-id 3
rf-channel 2 frequency 418000000 annex A modulation 256qam interleave 12
rf-channel 2 rf-power 45.0
rf-channel 2 rf-shutdown
rf-channel 3 cable downstream channel-id 4
rf-channel 3 frequency 426000000 annex A modulation 256qam interleave 12
rf-channel 3 rf-power 45.0
rf-channel 3 rf-shutdown
!
controller Integrated-Cable 1/1
rf-channel 0 cable downstream channel-id 5
rf-channel 0 frequency 402000000 annex A modulation 256qam interleave 12
rf-channel 0 rf-power 45.0
no rf-channel 0 rf-shutdown
rf-channel 1 cable downstream channel-id 6
rf-channel 1 frequency 410000000 annex A modulation 256qam interleave 12
rf-channel 1 rf-power 45.0
rf-channel 1 rf-shutdown
rf-channel 2 cable downstream channel-id 7
rf-channel 2 frequency 418000000 annex A modulation 256qam interleave 12
rf-channel 2 rf-power 45.0
rf-channel 2 rf-shutdown
rf-channel 3 cable downstream channel-id 8
rf-channel 3 frequency 426000000 annex A modulation 256qam interleave 12
rf-channel 3 rf-power 45.0
rf-channel 3 rf-shutdown
!
controller Integrated-Cable 2/0
rf-channel 0 cable downstream channel-id 9
rf-channel 0 frequency 402000000 annex A modulation 256qam interleave 12
rf-channel 0 rf-power 45.0
no rf-channel 0 rf-shutdown
rf-channel 1 cable downstream channel-id 10
rf-channel 1 frequency 410000000 annex A modulation 256qam interleave 12
rf-channel 1 rf-power 45.0
no rf-channel 1 rf-shutdown
rf-channel 2 cable downstream channel-id 11
rf-channel 2 frequency 418000000 annex A modulation 256qam interleave 12
rf-channel 2 rf-power 45.0
no rf-channel 2 rf-shutdown
rf-channel 3 cable downstream channel-id 12
rf-channel 3 frequency 426000000 annex A modulation 256qam interleave 12
rf-channel 3 rf-power 45.0
no rf-channel 3 rf-shutdown
!
controller Integrated-Cable 2/1
rf-channel 0 cable downstream channel-id 13
rf-channel 0 frequency 402000000 annex A modulation 256qam interleave 12
rf-channel 0 rf-power 45.0
no rf-channel 0 rf-shutdown
rf-channel 1 cable downstream channel-id 14
rf-channel 1 frequency 410000000 annex A modulation 256qam interleave 12
rf-channel 1 rf-power 45.0
no rf-channel 1 rf-shutdown
rf-channel 2 cable downstream channel-id 15
rf-channel 2 frequency 418000000 annex A modulation 256qam interleave 12
rf-channel 2 rf-power 45.0
no rf-channel 2 rf-shutdown
rf-channel 3 cable downstream channel-id 16
rf-channel 3 frequency 426000000 annex A modulation 256qam interleave 12
rf-channel 3 rf-power 45.0
no rf-channel 3 rf-shutdown
! setup cable 1/0 for node 1 this is basically the upstream config
! make sure each upstream has a unique frequency
interface Cable1/0
description NODE 1
downstream Integrated-Cable 1/0 rf-channel 0-3 upstream 0-3
no cable packet-cache
cable default-phy-burst 0
cable bundle 1
cable upstream max-ports 4
cable upstream 0 connector 0
cable upstream 0 frequency 20000000
cable upstream 0 channel-width 3200000 3200000
cable upstream 0 power-level 6
cable upstream 0 docsis-mode atdma
cable upstream 0 minislot-size 2
cable upstream 0 power-adjust threshold 8
cable upstream 0 range-backoff 3 6
cable upstream 0 modulation-profile 221
no cable upstream 0 shutdown
cable upstream 1 connector 1
cable upstream 1 frequency 24000000
cable upstream 1 channel-width 3200000 3200000
cable upstream 1 power-level 6
cable upstream 1 docsis-mode atdma
cable upstream 1 minislot-size 2
cable upstream 1 power-adjust threshold 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 40000000
cable upstream 2 channel-width 3200000 3200000
cable upstream 2 power-level 6
cable upstream 2 docsis-mode atdma
cable upstream 2 minislot-size 2
cable upstream 2 power-adjust threshold 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 50000000
cable upstream 3 channel-width 3200000 3200000
cable upstream 3 power-level 6
cable upstream 3 docsis-mode atdma
cable upstream 3 minislot-size 2
cable upstream 3 power-adjust threshold 8
cable upstream 3 range-backoff 3 6
cable upstream 3 modulation-profile 221
no cable upstream 3 shutdown
! this is the downstream for docsis 3.0 modems notice
! they have 4 downstreams so will bond to all 4
! notice that it is in bundle 1 and the
! bandwidth-percent 20 remaining ratio 100 which means
! reserve 20% of this rf-channel for docsis 3.0 traffic only,
! if there is remaining available bandwidth use up to 100% of it for docsis 3.0
! traffic
interface Wideband-Cable1/0:0
cable bundle 1
cable rf-channel 0 bandwidth-percent 20 remaining ratio 100
cable rf-channel 1 bandwidth-percent 20 remaining ratio 100
cable rf-channel 2 bandwidth-percent 20 remaining ratio 100
cable rf-channel 3 bandwidth-percent 20 remaining ratio 100
!These are the individual downstreams available to docsis 1.x
! and 2.0 modems
! notice the bundle declaration here as well
! there is also 20% of bandwidth reserved for non docsis 3.0 modems
! so 40% of each channel is reserved (20% for docsis 3.0 and 20% for non docsis 3.0)
! the remaining 60% of the channel is available to either type of modem in a first come first
! serve basis
interface Integrated-Cable1/0:0
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable1/0:1
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable1/0:2
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable1/0:3
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
interface Cable1/1
description NODE 2
downstream Integrated-Cable 1/1 rf-channel 0-3 upstream 4-7
no cable packet-cache
cable default-phy-burst 0
cable bundle 1
cable upstream max-ports 4
cable upstream 0 connector 0
cable upstream 0 frequency 20000000
cable upstream 0 channel-width 3200000 3200000
cable upstream 0 power-level 6
cable upstream 0 docsis-mode atdma
cable upstream 0 minislot-size 2
cable upstream 0 power-adjust threshold 8
cable upstream 0 range-backoff 3 6
cable upstream 0 modulation-profile 221
no cable upstream 0 shutdown
cable upstream 1 connector 1
cable upstream 1 frequency 24000000
cable upstream 1 channel-width 3200000 3200000
cable upstream 1 power-level 6
cable upstream 1 docsis-mode atdma
cable upstream 1 minislot-size 2
cable upstream 1 power-adjust threshold 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 40000000
cable upstream 2 channel-width 3200000 3200000
cable upstream 2 power-level 6
cable upstream 2 docsis-mode atdma
cable upstream 2 minislot-size 2
cable upstream 2 power-adjust threshold 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 50000000
cable upstream 3 channel-width 3200000 3200000
cable upstream 3 power-level 6
cable upstream 3 docsis-mode atdma
cable upstream 3 minislot-size 2
cable upstream 3 power-adjust threshold 8
cable upstream 3 range-backoff 3 6
cable upstream 3 modulation-profile 221
no cable upstream 3 shutdown
! this is the downstream for docsis 3.0 modems notice
! they have 4 downstreams so will bond to all 4
! notice that it is in bundle 1 and the
! bandwidth-percent 20 remaining ratio 100 which means
! reserve 20% of this rf-channel for docsis 3.0 traffic only,
! if there is remaining available bandwidth use up to 100% of it for docsis 3.0
! traffic
interface Wideband-Cable1/1:0
cable bundle 1
cable rf-channel 0 bandwidth-percent 20 remaining ratio 100
cable rf-channel 1 bandwidth-percent 20 remaining ratio 100
cable rf-channel 2 bandwidth-percent 20 remaining ratio 100
cable rf-channel 3 bandwidth-percent 20 remaining ratio 100
!These are the individual downstreams available to docsis 1.x
! and 2.0 modems
! notice the bundle declaration here as well
! there is also 20% of bandwidth reserved for non docsis 3.0 modems
! so 40% of each channel is reserved (20% for docsis 3.0 and 20% for non docsis 3.0)
! the remaining 60% of the channel is available to either type of modem in a first come first
! serve basis
interface Integrated-Cable1/1:0
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable1/1:1
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable1/1:2
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable1/1:3
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
interface Cable2/0
description NODE 3
downstream Integrated-Cable 2/0 rf-channel 0-3 upstream 0-3
no cable packet-cache
cable default-phy-burst 0
cable bundle 1
cable upstream max-ports 4
cable upstream 0 connector 0
cable upstream 0 frequency 20000000
cable upstream 0 channel-width 3200000 3200000
cable upstream 0 power-level 6
cable upstream 0 docsis-mode atdma
cable upstream 0 minislot-size 2
cable upstream 0 power-adjust threshold 8
cable upstream 0 range-backoff 3 6
cable upstream 0 modulation-profile 221
no cable upstream 0 shutdown
cable upstream 1 connector 1
cable upstream 1 frequency 24000000
cable upstream 1 channel-width 3200000 3200000
cable upstream 1 power-level 6
cable upstream 1 docsis-mode atdma
cable upstream 1 minislot-size 2
cable upstream 1 power-adjust threshold 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 40000000
cable upstream 2 channel-width 3200000 3200000
cable upstream 2 power-level 6
cable upstream 2 docsis-mode atdma
cable upstream 2 minislot-size 2
cable upstream 2 power-adjust threshold 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 50000000
cable upstream 3 channel-width 3200000 3200000
cable upstream 3 power-level 6
cable upstream 3 docsis-mode atdma
cable upstream 3 minislot-size 2
cable upstream 3 power-adjust threshold 8
cable upstream 3 range-backoff 3 6
cable upstream 3 modulation-profile 221
no cable upstream 3 shutdown
! this is the downstream for docsis 3.0 modems notice
! they have 4 downstreams so will bond to all 4
! notice that it is in bundle 1 and the
! bandwidth-percent 20 remaining ratio 100 which means
! reserve 20% of this rf-channel for docsis 3.0 traffic only,
! if there is remaining available bandwidth use up to 100% of it for docsis 3.0
! traffic
interface Wideband-Cable2/0:0
cable bundle 1
cable rf-channel 0 bandwidth-percent 20 remaining ratio 100
cable rf-channel 1 bandwidth-percent 20 remaining ratio 100
cable rf-channel 2 bandwidth-percent 20 remaining ratio 100
cable rf-channel 3 bandwidth-percent 20 remaining ratio 100
!These are the individual downstreams available to docsis 1.x
! and 2.0 modems
! notice the bundle declaration here as well
! there is also 20% of bandwidth reserved for non docsis 3.0 modems
! so 40% of each channel is reserved (20% for docsis 3.0 and 20% for non docsis 3.0)
! the remaining 60% of the channel is available to either type of modem in a first come first
! serve basis
interface Integrated-Cable2/0:0
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable2/0:1
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable2/0:2
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable2/0:3
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
interface Cable2/1
description NODE 4
downstream Integrated-Cable 1/0 rf-channel 0-3 upstream 4-7
no cable packet-cache
cable default-phy-burst 0
cable bundle 1
cable upstream max-ports 4
cable upstream 0 connector 0
cable upstream 0 frequency 20000000
cable upstream 0 channel-width 3200000 3200000
cable upstream 0 power-level 6
cable upstream 0 docsis-mode atdma
cable upstream 0 minislot-size 2
cable upstream 0 power-adjust threshold 8
cable upstream 0 range-backoff 3 6
cable upstream 0 modulation-profile 221
no cable upstream 0 shutdown
cable upstream 1 connector 1
cable upstream 1 frequency 24000000
cable upstream 1 channel-width 3200000 3200000
cable upstream 1 power-level 6
cable upstream 1 docsis-mode atdma
cable upstream 1 minislot-size 2
cable upstream 1 power-adjust threshold 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 40000000
cable upstream 2 channel-width 3200000 3200000
cable upstream 2 power-level 6
cable upstream 2 docsis-mode atdma
cable upstream 2 minislot-size 2
cable upstream 2 power-adjust threshold 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 50000000
cable upstream 3 channel-width 3200000 3200000
cable upstream 3 power-level 6
cable upstream 3 docsis-mode atdma
cable upstream 3 minislot-size 2
cable upstream 3 power-adjust threshold 8
cable upstream 3 range-backoff 3 6
cable upstream 3 modulation-profile 221
no cable upstream 3 shutdown
! this is the downstream for docsis 3.0 modems notice
! they have 4 downstreams so will bond to all 4
! notice that it is in bundle 1 and the
! bandwidth-percent 20 remaining ratio 100 which means
! reserve 20% of this rf-channel for docsis 3.0 traffic only,
! if there is remaining available bandwidth use up to 100% of it for docsis 3.0
! traffic
interface Wideband-Cable2/1:0
cable bundle 1
cable rf-channel 0 bandwidth-percent 20 remaining ratio 100
cable rf-channel 1 bandwidth-percent 20 remaining ratio 100
cable rf-channel 2 bandwidth-percent 20 remaining ratio 100
cable rf-channel 3 bandwidth-percent 20 remaining ratio 100
!These are the individual downstreams available to docsis 1.x
! and 2.0 modems
! notice the bundle declaration here as well
! there is also 20% of bandwidth reserved for non docsis 3.0 modems
! so 40% of each channel is reserved (20% for docsis 3.0 and 20% for non docsis 3.0)
! the remaining 60% of the channel is available to either type of modem in a first come first
! serve basis
interface Integrated-Cable2/1:0
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable2/1:1
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable2/1:2
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
!
interface Integrated-Cable2/1:3
cable bundle 1
cable rf-bandwidth-percent 20 remaining ratio 100
I had a quick look over your config
At first glance it seems quite complex, not 100% sure why you have configured it that way. Eg
* not making use of all the DS on card 1
* trying to allocate some DS to D2 modems and others to D3. This should not be required. If it was some DS for D1.x (tdma) and some for D2/D3 (atdma) I could understand, but cant really understand D2 vs D3....
*** Although I must admit am used to using the 20x20 cards which give you a bit more flexibility than the 8x8... So maybe I am overlooking something?
Anyway, I believe you might have problems with your load balance config because if I have the feeling the load-balance style you have configured doesn't support load-balance across linecards... Possible workaround is to revert to the old Cisco legacy load-balance method rather than your newer D3 method.
The messages from syslog appear to be load-balance within linecards, but I dont think that load balance across linecards will be working properly.
And regardless of above, when a modem registers it will be pretty random as to which DS it selects. If a D3 modem selects one of your "D2" downstreams, it sounds like you are expecting it to automatically get moved to the D3 downstreams.... That is not the case.