Force CM to specific D3.0 DBG

41 posts / 0 new

Thu, 09/24/2015 - 04:01

emsi

Dear forum,

is it possible to force a D3.0 Modem to use a specific Downstream Bonding Group available on a fiber node? I assume this would be vendor based, we primarily use Cisco EPC3212. Are you aware of any TLV or other config file options for Cisco? I know about generic "Downstream Frequency" setting in confilg file but read about problems with DS bonding in case you use it. Is it probably possible via DHCP vendor option 43?

thanks
Oliver

Thu, 09/24/2015 - 04:32

mbowe

Have a read about "attribute

Have a read about "attribute masks"

Thu, 09/24/2015 - 06:19

(Reply to #2) #3

emsi

Thanks for your reply. Let's

Thanks for your reply. Let's say I configure on the CMTS:

[...]
interface Wideband-Cable3/0:0
cable downstream attribute-mask 800000ff

interface Wideband-Cable4/0:0
cable downstream attribute-mask 800000fe
[...]

and in the configfile of the modem I define:

Euro-DOCSIS Extension Field
Cable Modem Attribute Masks
CM Downstream Forbidden Attribute Mask: 800000ff
CM Downstream Required Attribute Mask: 800000fe

Does this force the cable modem to finally register on Wideband-Cable4/0:0?

thanks
Oliver

Thu, 09/24/2015 - 06:25

(Reply to #3) #4

xsimio

Can you tell us exactly which

Can you tell us exactly which TLVs are you configuring into the config file?

Thu, 09/24/2015 - 06:23

xsimio

Michael is right, you should

Michael is right, you should use Attribute Masks, take a look into the following settings for the docsis configurator:

CMAttributeMasks
CMDownstreamRequiredAttributeMask
CMDownstreamForbiddenAttributeMask
CMUpstreamRequiredAttributeMask
CMUpstreamForbiddenAttributeMask

Hope it helps. You can check MULPI spec for a detailed description on how to use it.

Thu, 09/24/2015 - 06:37

(Reply to #5) #6

emsi

Thanks. Have you seen my

Thanks. Have you seen my example above? Should this work?

Oliver

Mon, 09/28/2015 - 06:15

emsi

I just had the time to check

I just had the time to check this out. I made a new bootfile including attribute masks. The CM comes online with the attribute mask settings:

cmts-test# sh cable modem verbose
[...]
Required DS Attribute Mask : 0x800000FF
Forbidden DS Attribute Mask : 0x800000FE
[...]

On the CMTS I configured this:

interface Wideband-Cable3/0:0
cable bundle 1
cable bonding-group-id 1
cable dynamic-bw-sharing
cable rf-channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel 3 bandwidth-percent 10 remaining ratio 100
cable downstream attribute-mask 800000FE
!

interface Wideband-Cable3/1:0
cable bundle 1
cable bonding-group-id 50
cable dynamic-bw-sharing
cable rf-channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel 3 bandwidth-percent 10 remaining ratio 100
cable downstream attribute-mask 800000FF
!

The CM registers successful on Wideband-Cable3/0:0 and never switches to Wideband-Cable3/1:0. Do I get anything wrong about attribute masks?

thanks
Oliver

Mon, 09/28/2015 - 08:44

emsi

Ok, I got it

just read this:

http://www.cisco.com/c/en/us/td/docs/cable/cmts/config_guide/b_cmts_ds_u...

about the restrictions of Cable Modem Steering. After reading I tried it with "Service Type Identifier". Set to a value in config file (TLV 43.11) and adopt the same value on the CMTS like this:

cable service type test1 ds-frequency 570000000
cable service type test2 ds-frequency 602000000

This makes the modem stick to a DS bonding group.

Oliver

Sun, 10/23/2016 - 23:51

(Reply to #8) #9

mbowe

Bad masks ?

I think you chose your masks incorrectly.

Note that these are "bit masks", not just identifier numbers.

The required attribute mask and the forbidden attribute mask should be configured in such a way that the bitwise AND of the two masks are zero.

In your case, the required and forbidden overlap each other and thus wont be applied, CMTS will just ignore because the combination is invalid.

On the CMTS, you probably should have set the bonding group attribute-masks to be something like :
wide3/0:0 - 8000000F
wide3/0:1 - 800000F0

Then you need to set the CM config file appropriately :

To assign to wide3/0:0
required DS attribute mask : 0x8000000F
forbidden DS attribute mask : 0x000000F0 (or just omit this line)

To assign to wide3/0:1
required DS attribute mask : 0x800000F0
forbidden DS attribute mask : 0x0000000F (or just omit this line)

Thu, 11/16/2017 - 07:41

(Reply to #9) #10

darkng

Attribute MASK Not Working

Hello,

I was trying to assign a particular Modem to a Wideband interface by using attribute masks into a Cisco 10k CMTS but somehow it isn't working.

As you see below the Modem already got the required and forbidden attribute mask and they are "AND bitwise" to each other.
But again the modem is connecting itself only in the first wideband interface.

ubr10k#show cable mac-domain cable 6/0/0 rcc
RCC-ID RCP RCs MD-DS-SG CMs WB/RCC-TMPL
1 00 00 00 00 00 16 0 2 WB (Wi6/0/0:0)
2 00 00 00 00 00 8 0 0 WB (Wi6/0/0:1)
3 00 00 00 00 00 4 0 0 WB (Wi6/0/0:2)
ubr10k#scm
D
MAC Address IP Address I/F MAC Prim RxPwr Timing Num I
State Sid (dBmv) Offset CPE P
1498.7d7d.07ac 172.22.8.4 C6/0/0/UB w-online(pt) 226 -0.50 677 1 N
cc03.fa44.94f3 172.22.8.2 C6/0/0/UB w-online(pt) 227 0.50 677 0 N

ubr10k#show cable modem 172.22.8.4 verbose | inc Att
Required DS Attribute Mask : 0x800000F0
Forbidden DS Attribute Mask : 0x8000000F
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
ubr10k#show running | Beg Wide
interface Wideband-Cable6/0/0:0
cable bundle 3
cable rf-channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel 3 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 3 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 2 channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 2 channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 2 channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 2 channel 3 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 3 channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 3 channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 3 channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 3 channel 3 bandwidth-percent 10 remaining ratio 10
cable downstream attribute-mask 8000000F
!
interface Wideband-Cable6/0/0:1
cable bundle 3
cable rf-channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel 3 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 3 bandwidth-percent 10 remaining ratio 10
cable downstream attribute-mask 800000F0
!
interface Wideband-Cable6/0/0:2
cable bundle 3
cable rf-channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel 3 bandwidth-percent 10 remaining ratio 10
!

*****Configuration file *****

/* TLV 3 : 0x01 */
Network Access Control:on
/* TLV 18 : 0x04 */
Maximum Number of CPEs:4
/* TLV 25 */
Downstream Service Flow Encodings
/* TLV 25.1 : 0x0001 */
Service Flow Reference:1
/* TLV 25.6 : 0x07 */
Quality of Service Parameter Set:provisioned admitted active
/* TLV 25.7 : 0x03 */
Traffic Priority:3
/* TLV 25.8 : 0x186A0000 */
Downstream Maximum Sustained Traffic Rate:409600000
/* TLV 24 */
Upstream Service Flow Encodings
/* TLV 24.1 : 0x0002 */
Service Flow Reference:2
/* TLV 24.6 : 0x07 */
Quality of Service Parameter Set:provisioned admitted active
/* TLV 24.7 : 0x07 */
Traffic Priority:7
/* TLV 24.8 : 0x07530000 */
Upstream Maximum Sustained Traffic Rate:122880000
/* TLV 24.9 : 0x00000BE4 */
Maximum Traffic Burst:3044
/* TLV 24.14 : 0x0BE4 */
Maximum Concatenated Burst:3044
/* TLV 24.15 : 0x02 */
Service Flow Scheduling Type:Best Effort
/* TLV 29 : 0x01 */
Privacy Enable:on
/* TLV 43 */
Euro-DOCSIS Extension Field
/* TLV 43.9 */
Cable Modem Attribute Masks
/* TLV 43.9.1 : 0x800000F0 */
CM Downstream Required Attribute Mask:800000F0
/* TLV 43.9.2 : 0x8000000F */
CM Downstream Forbidden Attribute Mask:8000000F

**************************************

Can anyone give me a hint, what am i doing wrong.

Thu, 11/16/2017 - 08:21

#11

darkng

Hello

Hello,

I was trying to test this solution to force the cable modem to specific D3.0 DBG.

I have set the required attribute mask and the forbidden attribute mask in such a way that the bitwise AND of the two masks are zero like described here:

wide6/0/0:0 - 8000000F
wide6/0/0:1 - 800000F0

Then i've set up the TLVS to the CM like this:
ubr10k#show cable modem 172.22.8.4 verbose | inc Att
Required DS Attribute Mask : 0x800000F0
Forbidden DS Attribute Mask : 0x8000000F

But again the modems are comming online only in the 1st DBG.

******************
ubr10k#show cable mac-domain cable 6/0/0 rcc
RCC-ID RCP RCs MD-DS-SG CMs WB/RCC-TMPL
1 00 00 00 00 00 16 0 2 WB (Wi6/0/0:0)
2 00 00 00 00 00 8 0 0 WB (Wi6/0/0:1)
3 00 00 00 00 00 4 0 0 WB (Wi6/0/0:2)
ubr10k#scm
D
MAC Address IP Address I/F MAC Prim RxPwr Timing Num I
State Sid (dBmv) Offset CPE P
1498.7d7d.07ac 172.22.8.4 C6/0/0/UB w-online(pt) 226 -0.50 677 1 N
cc03.fa44.94f3 172.22.8.2 C6/0/0/UB w-online(pt) 227 0.50 677 0 N

/* TLV 3 : 0x01 */
Network Access Control:on
/* TLV 18 : 0x04 */
Maximum Number of CPEs:4
/* TLV 25 */
Downstream Service Flow Encodings
/* TLV 25.1 : 0x0001 */
Service Flow Reference:1
/* TLV 25.6 : 0x07 */
Quality of Service Parameter Set:provisioned admitted active
/* TLV 25.7 : 0x03 */
Traffic Priority:3
/* TLV 25.8 : 0x186A0000 */
Downstream Maximum Sustained Traffic Rate:409600000
/* TLV 24 */
Upstream Service Flow Encodings
/* TLV 24.1 : 0x0002 */
Service Flow Reference:2
/* TLV 24.6 : 0x07 */
Quality of Service Parameter Set:provisioned admitted active
/* TLV 24.7 : 0x07 */
Traffic Priority:7
/* TLV 24.8 : 0x07530000 */
Upstream Maximum Sustained Traffic Rate:122880000
/* TLV 24.9 : 0x00000BE4 */
Maximum Traffic Burst:3044
/* TLV 24.14 : 0x0BE4 */
Maximum Concatenated Burst:3044
/* TLV 24.15 : 0x02 */
Service Flow Scheduling Type:Best Effort
/* TLV 29 : 0x01 */
Privacy Enable:on
/* TLV 43 */
Euro-DOCSIS Extension Field
/* TLV 43.9 */
Cable Modem Attribute Masks
/* TLV 43.9.1 : 0x0000FFFF */
CM Downstream Required Attribute Mask:0000FFFF
/* TLV 43.9.2 : 0x0000FFF0 */
CM Downstream Forbidden Attribute Mask:0000FFF0

Thu, 11/16/2017 - 08:23

#12

darkng

Hello

I was trying to test this solution to force the cable modem to specific D3.0 DBG.

I have set the required attribute mask and the forbidden attribute mask in such a way that the bitwise AND of the two masks are zero like described here:

wide6/0/0:0 - 8000000F
wide6/0/0:1 - 800000F0

Then i've set up the TLVS to the CM like this:
ubr10k#show cable modem 172.22.8.4 verbose | inc Att
Required DS Attribute Mask : 0x800000F0
Forbidden DS Attribute Mask : 0x8000000F

But again the modems are comming online only in the 1st DBG.

Fri, 11/17/2017 - 09:45

#13

darkng

10k and attribute mask not working

Hello,

I'm trying to do the same configuration as propossed but mbowe but somehow it isn't working with the 10k and the attribute masks.
The Modem is always comming to the first wideband even that's forbidden.

I've already setup the attribution mask to two widebands ( W6/0/0:0 ) with 16x DS and W6:0:0:1 with 8xDS
I want to force modem to connect on the second wideband interface by using the tlvs 43.9 for attribute masks.
When i check it on the Cisco 10k CMTS, i'm seeing that the modem got already both attributes but again it's not working as epected.

Does anyone have a hint what could be wrong.

scm verbose
Required DS Attribute Mask : 0x800000F0
Forbidden DS Attribute Mask : 0x8000000F
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0

CFG FILE:
TLV 43.9.1 : 0x800000F0 - Required - WI6:0:0:1
TLV 43.9.2 : 0x8000000F - Forbidden- WI6:0:0:0

WI6:0:0:0
cable downstream attribute-mask 8000000F

WI6:0:0:1
cable downstream attribute-mask 0x800000F0

Sat, 11/18/2017 - 17:58

(Reply to #13) #14

mbowe

Try this

In the config file, don't put an 8 in the forbidden mask

Mon, 11/20/2017 - 03:51

(Reply to #14) #15

darkng

Hello Mbowe

hello Mbowe,

Thank you very much for your quick reply.
I have tried to remove the 8 in the forbidden mask but again its not working.

ubr10k#show cable modem 172.22.8.5 verbose | inc Att
Required DS Attribute Mask : 0x800000F0
Forbidden DS Attribute Mask : 0xF

interface Wideband-Cable6/0/0:0
cable downstream attribute-mask 8000000F

interface Wideband-Cable6/0/0:1
cable downstream attribute-mask 800000F0

Euro-DOCSIS Extension Field
Cable Modem Attribute Masks
CM Downstream Required Attribute Mask:800000F0
CM Downstream Forbidden Attribute Mask:0000000F

Maybe you see a problem, why its not working again.
Thanks again for your help.

Mon, 11/20/2017 - 07:31

(Reply to #15) #16

kwesibrunee

A couple of things I noticed:

The Required/Forbidden attributes have to match between the CMTS and cable modem config

0000000F in HEX = 15 in decimal
8000000F in HEX = 2147483663 in Decimal
obviously they don't match....

the other thing is, you are adding the required/forbidden attribute mask to the extension field TLV43
Have you tried setting it on the primary Downstream service flow instead? If I remember correctly the TLV43 required/forbidden attr mask is for Docsis 1.0 modems, for all other docsis versions I think it is set on the primary (first) Service flow instead.

Finally, what are you trying to accomplish with the Required/Forbidden attribute mask? Load balancing? Enhanced service for premium/business tiers? There may be a better way to do what you want.

Mon, 11/20/2017 - 08:19

(Reply to #16) #17

darkng

kwesibrunee

Hello kwesibrunee,

Thank you for your response.
I want to force a modem to connect to a specific wideband channel through Cisco 10k and attribute masks ( TLVs 43.9 ).
I'm not sure if the Cisco 10k supports correctly these for wideband channels.
For Example: Arris TG2492 Modem or EPC3940 modem, I want to force the modems to connect to the second wideband interface 6/0/0:0(with 8 DS) and deny the connection to the first wideband 6/0/0:0 ( with 16xDS) by using the config file through required and forbidden attribute masks.

Can you please tell me what's the best way to achieve this by using the configuration file to assign a modem to only a specific wideband interface.

By downstream service flow do you mean using :
ServiceFlowRequiredAttrMask TLV: [25.31] - SfRequiredAttributeMask ex. hexstr: 80000001
ServiceFlowForbiddenAttrMask TLV: [25.32]

Please if you can help me to achieve this, I would be very thankful.

Mon, 11/20/2017 - 10:32

(Reply to #17) #18

kwesibrunee

Ok,

definitely use the Service flow attribute masks only on the primary service flows (the ones with the lowest SFId) and since you want to only do downstream modem steering, just do it on the primary Downstream service flow. Also only add TLV 25.31 required Attribute mask.

Also try using an attribute mask of FFFF or 0x0000FFFFF, the last time I played with attribute masks this is the one I eventually got to work.

drop the TLV 43.9 masks...

on the CMTS only use an attribute mask on the interface you want it to connect on. You can add the Forbidden attribute mask later if needed.

lastly the mask you put in the config file has to match what is set on the CMTS.

Mon, 11/20/2017 - 18:53

(Reply to #18) #19

mbowe

> 0000000F in HEX = 15 in

> 0000000F in HEX = 15 in decimal
> 8000000F in HEX = 2147483663 in Decimal
> obviously they don't match....

No, it doesnt work like that

These are bitwise masks not identifying numbers

The masks are a 32bit in size, and written in hex they look like XXXXYYYY
XXXX section is DOCSIS defined/reserved
YYYY section is operator defined

The required/forbidden masks are put in CM config file.
The provisioned mask is put on the CMTS.

CMTS will apply selection rules like this :
* When required attribute mask is set, for every 1 bit in the required mask, there needs to be a matching 1 bit in the provisioned mask (if such a channel is available in the RCC)
* When forbidden attribute mask is set, for every 1 bit in the forbidden mask, there needs to be a matching 0 bit in the provisioned mask (if such a channel is available in the RCC)

If you set a required and a forbidden mask, they must not overlap

Mon, 11/20/2017 - 18:54

(Reply to #19) #20

mbowe

Should work

In your case there are two methods to achieve what you want

1/ Ban the modems from the 16x BG by setting CM Downstream Forbidden Attribute Mask 0xF
or
2/ Steer the modems to the 8x BG by setting CM Downstream Required Attribute Mask 0xF0

I tested it on my CMTS and it works OK, so there must be something wrong on your system.

Please provide some more outputs :
sh run int wide 6/0/0:0
sh run int wide 6/0/0:1
show cable modem 172.22.8.5 wide channel
show cable modem 172.22.8.5 ver | incl Attribute

Wed, 11/22/2017 - 04:58

(Reply to #20) #21

darkng

Attribute mask

Hello mbowe,

Thank you for your answers.
I want to achieve the first method, ban a particular modem from the 16x BG by setting the cm downstream forbidden attribute mask.
Can you please sent me your tested cfg file to my email a.gashi@albismart.com and maybe some part of the 10k wideband configuration.
I'm adding the Attribute mask through Excentis Config file editor.

Euro-DOCSIS Extension Field
Cable Modem Attribute Masks
CM Downstream Forbidden Attribute Mask:8000000F

Wideband configuration:
interface Wideband-Cable6/0/0:0
cable bundle 3
cable rf-channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel 3 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 3 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 2 channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 2 channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 2 channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 2 channel 3 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 3 channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 3 channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 3 channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 3 channel 3 bandwidth-percent 10 remaining ratio 10
cable downstream attribute-mask 8000000F
end

interface Wideband-Cable6/0/0:1
cable bundle 3
cable rf-channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel 3 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 0 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 1 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 2 bandwidth-percent 10 remaining ratio 10
cable rf-channel controller 1 channel 3 bandwidth-percent 10 remaining ratio 10
end

ubr10k#show cable modem 172.22.8.5 wide channel
MAC Address IP Address I/F MAC DSxUS Primary
State WB
e088.5d89.de69 172.22.8.5 C6/0/0/UB w-online(pt) 16x4 Wi6/0/0:0

The attribute mask is already transferred to the modem. And the CMTS can also evaluate the attributes mask.
ubr10k#show cable modem 172.22.8.5 ver | incl Attribute
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0x8000000F
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0

ubr10k#show cable mac-domain cable 6/0/0 rcc
RCC-ID RCP RCs MD-DS-SG CMs WB/RCC-TMPL
1 00 00 00 00 00 16 0 4 WB (Wi6/0/0:0)
2 00 00 00 00 00 8 0 0 WB (Wi6/0/0:1)
3 00 00 00 00 00 4 0 1 WB (Wi6/0/0:2)

It seems that either the CMTS or the modem simply ignore this parameter.
It is always using the Wi6/0/0:0.

Wed, 11/22/2017 - 05:22

(Reply to #21) #22

darkng

Doesnt work

Hello mbowe,

Thank you for your quick answers but i think its maybe not clear enough for me. It seems not to make a CLICK into my Brain.

I want to achieve the first method, ban a particular modem from the 16x BG by setting the cm downstream forbidden attribute mask.
Can you please sent me your tested cfg file to my email a.gashi@albismart.com and maybe some part of the 10k wideband configuration.
I'm adding the Attribute mask through Excentis Config file editor.

Euro-DOCSIS Extension Field
Cable Modem Attribute Masks
CM Downstream Forbidden Attribute Mask:8000000F

ubr10k#show cable modem 172.22.8.5 wide channel
MAC Address IP Address I/F MAC DSxUS Primary
State WB
e088.5d89.de69 172.22.8.5 C6/0/0/UB w-online(pt) 16x4 Wi6/0/0:0

The attribute mask is already transferred to the modem. And the CMTS can also evaluate the attributes mask.
show cable modem 172.22.8.5 ver | incl Att
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0x8000000F
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0

ubr10k#show cable mac-domain cable 6/0/0 rcc
RCC-ID RCP RCs MD-DS-SG CMs WB/RCC-TMPL
1 00 00 00 00 00 16 0 4 WB (Wi6/0/0:0)
2 00 00 00 00 00 8 0 0 WB (Wi6/0/0:1)
3 00 00 00 00 00 4 0 1 WB (Wi6/0/0:2)

It seems that either the CMTS or the modem simply ignore this parameter.
It is always using the Wi6/0/0:0.

Wed, 11/22/2017 - 11:59

(Reply to #22) #23

mbowe

OK I have my suspicion about

OK I have my suspicion about what is going wrong.

Please provide :

show run int cable 6/0/0 | incl downstream
show cable modem 172.22.8.5 wide primary

Wed, 11/22/2017 - 12:20

(Reply to #23) #24

darkng

Primary Channels

Hello Mbowe,

Only the first 4 channels are primary * the same channels are already attached to the first and second wideband interface.

ubr10k#show run int cable 6/0/0 | incl downstream
downstream Integrated-Cable 6/0/0 rf-channel 0-3 upstream 0-3

ubr10k#show cable modem 172.22.8.5 wide primary
MAC Address IP Address Host MAC Prim Num Primary DS
Interface State Sid CPE Downstream RfId
e088.5d89.de69 172.22.8.5 C6/0/0/UB w-online 340 1 In6/0/0:3 483

Can you probably forward me your cfg file somehow that you have tested in my email a.gashi@albismart.com .

Wed, 11/22/2017 - 15:27

(Reply to #24) #25

mbowe

OK well the issue isn't

OK well the issue isn't config file related, because the CMTS shows it is learning the CM masks correctly

And if only the 1st 4 x DS are primary, it rules out the other idea I had

What version IOS are you running ?

Have you configured any DOCSIS load balancing ?

Wed, 11/22/2017 - 16:01

(Reply to #25) #26

darkng

Hello mbowe,

Right now i'm testing with the version SCG6 with a PRE4.
Cisco IOS Software, 10000 Software (UBR10K4-K9P6U2-M), Version 12.2(33)SCG6, RELEASE SOFTWARE (fc1)

If neccessary, i can try to change it to ubr10k4-k9p6u2-mz.122-33.SCI3.
With which version did you lately tested it.

I've connected some more modems to check.
ubr10k#show cable modem verbose | inc Attr|IP Address|MAC
MAC Address : 1498.7d7c.cc84
IP Address : 172.22.8.9
MAC Version : DOC3.0
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0x8000000F
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
MAC Address : e088.5d89.de69
IP Address : 172.22.8.5
MAC Version : DOC3.0
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0x8000000F
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
MAC Address : 0896.d78f.498c
IP Address : 172.22.8.21
MAC Version : DOC3.0
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0x0
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
MAC Address : a811.fc99.605b
IP Address : 172.22.8.13
MAC Version : DOC3.0
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0x8000000F
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
MAC Address : 9c34.2650.8f4a
IP Address : 172.22.8.14
MAC Version : DOC3.0
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0x8000000F
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0

ubr10k#show running-config | inc load
cable load-balance docsis-enable
cable load-balance docsis30-enable
cable load-balance group 22 method utilization

The complete 10k configuration is here :
http://37.139.13.185/sample/Cisco10k-SampleConfig.txt

The config file from excentis
http://37.139.13.185/sample/mask-config.txt

the config file from docsis decode
http://37.139.13.185/sample/mask.txt

the config file encoded
http://37.139.13.185/sample/mask.cfg

Tue, 11/28/2017 - 05:06

(Reply to #26) #27

darkng

Hello

Hello mbowe,

Can you check what the issue could be and give me a hint how to solve it.
Or maybe just sent me your test configuration how you tested it including attribute masks that you put on the Widebands and on the configuration file.

Tue, 11/28/2017 - 17:01

(Reply to #27) #28

mbowe

Be careful of the masks you set in CM config file

Wide 6/0/0:0 (16X BG) needs the mask set to 8000000F
You have done this already

Wide 6/0/0:1 (8X BG) can be left default mask (which is 8000000 and will not be shown in the running config)
You have done this already

In the CM config file, the downstream forbidden-mask needs to be 0000000F so it matches only wide 6/0/0:0
You have currently got this set to 8000000F which is not correct

Wed, 11/29/2017 - 02:57

(Reply to #28) #29

darkng

it doesnt work

Hello mbowe,

Thank you very much for your answer but again it's not working.
Either i'm doing something wrong somewhere and i'm blind to see or it's not working as expected.

Cisco IOS Software, 10000 Software (UBR10K4-K9P6U2-M), Version 12.2(33)SCI3, RELEASE SOFTWARE (fc3)

ubr10k#scm verbose | inc IP |Wideband |Pri|MAC | Attr
MAC Address : 4800.33c3.fe94
IP Address : 172.22.8.30
Dual IP : N
Prim Sid : 79
Primary Wideband Channel ID : 3073 (Wi6/0/0:0)
Primary Downstream : In6/0/0:2 (RfId : 2306)
Wideband Capable : Y
MAC Version : BPI
Security Capabilities : {Priv=BPI+, EAE=Y, Key_len=56,128}
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0xF
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
MAC Address : 1498.7d7c.cc84
IP Address : 172.22.8.9
Dual IP : N
Prim Sid : 80
Primary Wideband Channel ID : 3073 (Wi6/0/0:0)
Primary Downstream : In6/0/0:0 (RfId : 2304)
Wideband Capable : Y
MAC Version : DOC3.0
Security Capabilities : {Priv=BPI+, EAE=Y, Key_len=56,128}
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0xF
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
Service Flow Priority : N
MAC Address : e088.5d89.de69
IP Address : 172.22.8.5
Dual IP : N
Prim Sid : 83
Primary Wideband Channel ID : 3073 (Wi6/0/0:0)
Primary Downstream : In6/0/0:3 (RfId : 2307)
Wideband Capable : Y
MAC Version : DOC3.0
Security Capabilities : {Priv=BPI+, EAE=Y, Key_len=56,128}
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0xF
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
Service Flow Priority : N
MAC Address : 9c34.2650.8f4a
IP Address : 172.22.8.14
Dual IP : N
Prim Sid : 84
Primary Wideband Channel ID : 3073 (Wi6/0/0:0)
Primary Downstream : In6/0/0:3 (RfId : 2307)
Wideband Capable : Y
sysDescr : ARRIS EuroDOCSIS 3.0 / EuroSIP 2.0 Touchstone Residential Gateway <<HW_REV: 4; VENDOR: ARRIS Group, Inc.; BOOTR: 4.2.0.45; SW_REV: 9.1.103AS.EURO.SIP; MODEL: TG2492S-85>>
MAC Version : DOC3.0
Security Capabilities : {Priv=BPI+, EAE=Y, Key_len=56,40,128}
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0xF
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0
Service Flow Priority : N
ubr10k#

ubr10k#show running-config int Wideband-Cable 6/0/0:0
Building configuration...

Current configuration : 1325 bytes
!
interface Wideband-Cable6/0/0:0
cable bundle 3
cable rf-channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel 3 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 3 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 2 channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 2 channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 2 channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 2 channel 3 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 3 channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 3 channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 3 channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 3 channel 3 bandwidth-percent 10 remaining ratio 100
cable downstream attribute-mask 8000000F
end

interface Wideband-Cable6/0/0:1
cable bundle 3
cable rf-channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel 3 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 3 bandwidth-percent 10 remaining ratio 100
end

CFG FILE
Network Access Control:on
Maximum Number of CPEs:4
Privacy Enable:on
Downstream Service Flow Encodings
Service Flow Reference:1
Quality of Service Parameter Set:provisioned admitted active
Traffic Priority:3
Downstream Maximum Sustained Traffic Rate:409600000
Upstream Service Flow Encodings
Service Flow Reference:2
Quality of Service Parameter Set:provisioned admitted active
Traffic Priority:7
Upstream Maximum Sustained Traffic Rate:122880000
Maximum Traffic Burst:3044
Maximum Concatenated Burst:3044
Service Flow Scheduling Type:Best Effort
Euro-DOCSIS vendor specific Extension Field:001095/3601016A01016B0561646D696E6C0561646D696E
SNMP MIB Object(docsDevNmAccessIp.1):1.3.6.1.2.1.69.1.2.1.2.1, IP Address, 0.0.0.0
SNMP MIB Object(docsDevNmAccessIpMask.1):1.3.6.1.2.1.69.1.2.1.3.1, IP Address, 0.0.0.0
SNMP MIB Object(docsDevNmAccessCommunity.1):1.3.6.1.2.1.69.1.2.1.4.1, Octet String, remote
SNMP MIB Object(docsDevNmAccessControl.1):1.3.6.1.2.1.69.1.2.1.5.1, Integer, 3
SNMP MIB Object(docsDevNmAccessInterfaces.1):1.3.6.1.2.1.69.1.2.1.6.1, Octet String, 0xC0
SNMP MIB Object(docsDevNmAccessStatus.1):1.3.6.1.2.1.69.1.2.1.7.1, Integer, 4
Euro-DOCSIS Extension Field
Cable Modem Attribute Masks
CM Downstream Forbidden Attribute Mask:0000000F

Is there maybe any other configuration needed to forbidd the modem connecting to the first wideband 6/0/0:0.

Wed, 11/29/2017 - 02:59

(Reply to #29) #30

darkng

it doesnt work

Hello mbowe,

Thank you very much for your answer but again it's not working.
Either i'm doing something wrong somewhere and i'm blind to see or it's not working as expected.

ubr10k#show cable modem primary-channel
MAC Address IP Address Host MAC Prim Num Primary DS
Interface State Sid CPE Downstream RfId
4800.33c3.fe94 172.22.8.30 C6/0/0/UB w-online(pt) 79 0 In6/0/0:2 2306
1498.7d7c.cc84 172.22.8.9 C6/0/0/UB w-online(pt) 80 1 In6/0/0:0 2304
e088.5d89.de69 172.22.8.5 C6/0/0/UB w-online(pt) 83 1 In6/0/0:3 2307
9c34.2650.8f4a 172.22.8.14 C6/0/0/UB w-online(pt) 84 1 In6/0/0:3 2307

ubr10k#show running-config int Wideband-Cable 6/0/0:0
Building configuration...

Wed, 11/29/2017 - 03:03

(Reply to #30) #31

darkng

Hello mbowe,

Thank you very much for your answer but again it's not working.
Either i'm doing something wrong somewhere and i'm blind to see or it's not working as expected.

MAC Address : 4800.33c3.fe94
IP Address : 172.22.8.30
Primary Wideband Channel ID : 3073 (Wi6/0/0:0)
Primary Downstream : In6/0/0:2 (RfId : 2306)
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0xF
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0

MAC Address : 1498.7d7c.cc84
IP Address : 172.22.8.9
Primary Wideband Channel ID : 3073 (Wi6/0/0:0)
Primary Downstream : In6/0/0:0 (RfId : 2304)
Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0xF
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0

MAC Address : e088.5d89.de69
IP Address : 172.22.8.5
Primary Wideband Channel ID : 3073 (Wi6/0/0:0)
Primary Downstream : In6/0/0:3 (RfId : 2307)

Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0xF
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0

MAC Address : 9c34.2650.8f4a
IP Address : 172.22.8.14
Primary Wideband Channel ID : 3073 (Wi6/0/0:0)
Primary Downstream : In6/0/0:3 (RfId : 2307)

Required DS Attribute Mask : 0x0
Forbidden DS Attribute Mask : 0xF
Required US Attribute Mask : 0x0
Forbidden US Attribute Mask : 0x0

interface Wideband-Cable6/0/0:0
cable bundle 3
cable rf-channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel 3 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 1 channel 3 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 2 channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 2 channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 2 channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 2 channel 3 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 3 channel 0 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 3 channel 1 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 3 channel 2 bandwidth-percent 10 remaining ratio 100
cable rf-channel controller 3 channel 3 bandwidth-percent 10 remaining ratio 100
cable downstream attribute-mask 8000000F

Can the order of the EuroDOCSIS extension field matter on the CFG file in my case.

Wed, 11/29/2017 - 03:07

(Reply to #31) #32

darkng

it doesnt work

Hello mbowe,

Thank you very much for your answer but again it's not working.
Either i'm doing something wrong somewhere and i'm blind to see or it's not working as expected.

CFG FILE
Euro-DOCSIS Extension Field
Cable Modem Attribute Masks
CM Downstream Forbidden Attribute Mask:0000000F

Can the order of the EuroDOCSIS extension field matter on the CFG file in my case.

Wed, 11/29/2017 - 03:12

(Reply to #32) #33

darkng

Hello mbowe,

Thank you very much for your answer but again it's not working.
Either i'm doing something wrong somewhere and i'm blind to see or it's not working as expected.

interface Wideband-Cable6 0 0 0
bundle3
rf-channels 0 until 4 with bandwidth percent 10 and remaining ratio 100
controller 1 until 4 all channels attached
cable downstream attribute-mask 8000000F

interface Wideband-Cable6 0 0 1
bundle3
rf-channels 0 until 4 with bandwidth percent 10 and remaining ratio 100
controller 1 until 2 all channels attached

Same Primary channels on both Downstreams 6 0 0

CFG FILE
Euro-DOCSIS Extension Field
Cable Modem Attribute Masks
CM Downstream Forbidden Attribute Mask:0000000F

Can the order of the EuroDOCSIS extension field matter on the CFG file in my case.

can you please sent me your tested config file into my email a.gashi@albismart.com

Mon, 12/04/2017 - 07:24

(Reply to #33) #34

darkng

any help from someone or mbowe

Hello,

Does anyone have any idea why its not working to me.
Please if you have any example cfg file that you have tested forward it to my email a.gashi@albismart.com

Sun, 12/10/2017 - 02:36

(Reply to #34) #35

darkng

Hello

Hello,

Any help from someone that is/has already a setup with attribute masks on 10k cmts.

Mon, 03/19/2018 - 07:23

(Reply to #35) #36

bajojoba

Not working on 10k

Hi,

I'm trying to do the same on the Cisco 10K with IOS SCI3 and it is not working. The same setup on the CBR8 works flawlessly.

Tue, 03/27/2018 - 05:52

(Reply to #36) #37

Lopez

Is there anyone with whom it

Is there anyone with whom it works on ubr10k4-k9p6u2-mq.122-33.SCI2a?

Tue, 03/27/2018 - 06:34

(Reply to #37) #38

sb (not verified)

This works for me on ubr10k:

You need to assign an attribute mask to one (or more) of your wideband interfaces.
interface Wideband-Cable a/b/c:d
cable downstream attribute-mask 80000010

Use this attribute mask in your docsis-file to your internet downstream service flow:
TLV 25.31 ServiceFlowRequiredAttrMask

DsServiceFlow
{
***any other stuff that belongs here***
ServiceFlowRequiredAttributeMask 0x80000010;
}

The Modem itself still is bound to the largest wideband bonding group available,
but the internet downstream service flow is bound to another wideband bonding group, as seen via this command:

show cable modem aabb.ccdd.eeff service-flow

Tue, 03/27/2018 - 06:35

(Reply to #38) #39

sb (not verified)

This works for me on ubr10k:

You need to assign an attribute mask to one (or more) of your wideband interfaces.
interface Wideband-Cable a/b/c:d
cable downstream attribute-mask 80000010

Use this attribute mask in your docsis-file to your internet downstream service flow:
TLV 25.31 ServiceFlowRequiredAttrMask

DsServiceFlow
{
***any other stuff that belongs here***
ServiceFlowRequiredAttributeMask 0x80000010;
}

The Modem itself still is bound to the largest wideband bonding group available,
but the internet downstream service flow is bound to another wideband bonding group, as seen via this command:

show cable modem aabb.ccdd.eeff service-flow

Tue, 03/27/2018 - 19:14

(Reply to #39) #40

mbowe

It works perfectly on our

It works perfectly on our uBR10k gear, which currently have SCH6

Also works fine on our cBR8 gear

Wed, 03/28/2018 - 03:17

(Reply to #40) #41

Lopez

Do you know how to enable

Do you know how to enable debug mode to check if the modem logs in correctly on the interface?

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