Hi,
I'm having some issues getting Arris 820 to come online at all, in any mode, without configuring a custom RCS, but the issue is that I can only get a 4x4 profile to work. This creates issues since my other EPC3010's etc starts using that RCS, which interferes with my strategy for capacity.
Setup is:
8/0/0 = 4x Primary DS 338,346,354,362 Mhz ( MAC domain interface.. )
8/0/1 = 4x non-primary DS 562,570,578,586 same SG as 8/0/0
8/0/4 = 4x non-primary rf-spanned between 8/0/0-8/0/1 8/0/2 - 8/0/3 SG's at DS 530,538,546,554 Mhz
For this I have configured the following wideband interfaces:
interface Wideband-Cable8/0/0:0
cable bundle 1
cable rf-channel 0 bandwidth-percent 1 remaining ratio 100
cable rf-channel 1 bandwidth-percent 1 remaining ratio 100
cable rf-channel 2 bandwidth-percent 1 remaining ratio 100
cable rf-channel 3 bandwidth-percent 1 remaining ratio 100
!
interface Wideband-Cable8/0/0:1
cable bundle 1
cable rf-channel 0 bandwidth-percent 1 remaining ratio 100
cable rf-channel 1 bandwidth-percent 1 remaining ratio 100
cable rf-channel 2 bandwidth-percent 1 remaining ratio 100
cable rf-channel 3 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 1 channel 0 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 1 channel 1 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 1 channel 2 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 1 channel 3 bandwidth-percent 1 remaining ratio 100
!
interface Wideband-Cable8/0/0:2
cable bundle 1
cable rf-channel 0 bandwidth-percent 1 remaining ratio 100
cable rf-channel 1 bandwidth-percent 1 remaining ratio 100
cable rf-channel 2 bandwidth-percent 1 remaining ratio 100
cable rf-channel 3 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 4 channel 0 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 4 channel 1 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 4 channel 2 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 4 channel 3 bandwidth-percent 1 remaining ratio 100
!
interface Wideband-Cable8/0/0:4
cable bundle 1
cable rf-channel 0 bandwidth-percent 1 remaining ratio 100
cable rf-channel 1 bandwidth-percent 1 remaining ratio 100
cable rf-channel 2 bandwidth-percent 1 remaining ratio 100
cable rf-channel 3 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 1 channel 0 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 1 channel 1 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 1 channel 2 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 1 channel 3 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 4 channel 0 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 4 channel 1 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 4 channel 2 bandwidth-percent 1 remaining ratio 100
cable rf-channel controller 4 channel 3 bandwidth-percent 1 remaining ratio 100
!
But the Arris 820 will not accept any of these, the only way to get them online is to create a custom RCS.
int8/0/0
cable rcc-template 83
cable rcc-template 83
rcp-id 00 10 00 10 04
receive-module 1 first-center-frequency 338000000
receive-channel 1 center-frequency 338000000 connected-receive-module 1 primary
receive-channel 2 center-frequency 346000000 connected-receive-module 1 primary
receive-channel 3 center-frequency 354000000 connected-receive-module 1 primary
receive-channel 4 center-frequency 362000000 connected-receive-module 1 primary
!
Could anyone recommend a rcc-template for my config that would allow the modems to come online at 8x4?
Or is there any other way, other than perhaps going 8 continuous channels?
I have tried getting the modem to present its available RCC-ID for any clues, but I'm not being able to find the correct amount of debug needd,
#show debugging
CMTS:
CMTS TLV encodings debugging is on
CMTS RCC debugging is on
CMTS specific:
Debugging is on for Address e83e.fc5e.7369, Mask ffff.ffff.ffff (verbose)
interface Cable8/0/0
description "DS1 EuroDocsis2 + 3"
downstream Integrated-Cable 8/0/0 rf-channel 0-3 upstream 0-7
cable tftp-enforce
cable mtc-mode
cable rcc-template 83
cable rcp-control verbose
cable cm-status enable 3 6-10
no cable packet-cache
cable default-phy-burst 0
cable map-advance dynamic 300 1000
cable bundle 1
cable upstream max-ports 8
I would really like to keep my config lean & easy and suboptimal performance for the arris modems ( but atleast 4x4 ) would be fine, just not for all of my D3 modems.
Regards,
Philip
I had a very similar problem, 2 sets of 4 frequencies, not continuous. The modems would show up on 1 downstream channel, and one channel only.
I put this into the modem config file (under Arris specific) and it fixed the problem.
Even though setting it in the cm config file isn't persistent, if the modem drops and comes back online, it grabs the file and toggles this mib. It has been working very well for us.
Set it to 'enable'...
Name: arrisCmDoc30SetupRCPBypass
OID: 1.3.6.1.4.1.4115.1.3.4.1.3.33
Numerical syntax: Integer (32 bit)
Base syntax: INTEGER
Composed syntax: INTEGER
Status: current
Max access: read-write
Value list: 1: disable(0)
2: enable(1)
3: default(2)
Default values: 1: 2 (int)")
Description: This object is used to enable/disable RCP check bypass feature.
If it is set to disable (0), RCP check bypass feature is disabled.
If it is set to enable (1), RCP check bypass feature is enabled.
If it is set to default (2), RCP check bypass feature is disabled and follow the setting in cm config file.
Setting via SNMP is persistent, and will override the setting in cm config file if it is set to enable (1) or disable (0), will follow the setting in cm config file if it is set to default (2).
Setting via cm config file is not persistent.
Hi OldDocsisGuy,
Thank you for that!
It is possible for me to set it persistent via SNMP and then remove the RCS to get 'normal behaviour'.
One issue is that my 820's will not boot at all without the OID set. Not even in D2 mode. Stuck in init(o)
But maybe I can get RCS going that gets the D2 mode going, where I can then set the oid with a bootfile and then get D3 mode going...
I just do not see why Arris 820 would not have this feature enabled by default.
Regards,
Philip
I guess I got lucky then, the modems would at least come online, although they wouldn't bond to either 4 channel group, which they should have. At least getting them online allowed them to grab the cm file and then it would come up 8 downstream bonded.
Arris certainly seems to do things their own way. The Motorola modems we have (even the modems with Arris on the front) work out of the box.
Much safer to keep the 8 channels within a 60MHz window (North American), or contiguous (Euro).
This will allow pretty much all D3 modems to work without needing any fancy templates.
I've noticed that certain brands of modems are more or less tolerant than others about group spacing. The cisco modems are more tolerant and can have groups farther apart than the arris modems. In any case, keeping them contiguous is the best plan either way.
Also, I'm not sure if this makes any difference, but when I had a cisco, I set up the 8 channel group first, and did the smaller groups as sub-interfaces in size order, so the 8 channel was always first, then 4, then 3 etc
Cisco are Broadcom based, TM820 is Intel based.
You should check the specifications, if I remember correctly, the 820 has two tuners, so you can have two distinct blocks of frequencies, there are limitations on how wide the two blocks can be and what the distance between the two blocks can be. These are INTEL limitations and all modems based on the INTEL chipset should have the same issues. Hardware based I would say.
The new PUMA6 chipset is full spectrum and does not have these problems anymore, but a bit more expensive.
I just set the OID on the modems and then removed the troublesome RCC. Now I'm hoping that the modems will not reset that oid. It seems to work since two weeks or so.
Obviously not a perfect solution. It is a small number, 50 modems, so it might be worth replacing them in the long term for broadcom or FBC modems.
Regards,
Philip
Yeah, no matter how hard I tried, or how loudly I complained, management wouldn't budge on the frequencies they gave me. Something about just printing up new channel guides...
If you are going to use a template, wouldn't it need to look something like these :
cable rcc-template 83
rcp-id 00 10 00 10 04
receive-module 1 first-center-frequency 338000000 connected-receive-module 1
receive-module 2 first-center-frequency 530000000 connected-receive-module 2
receive-channel 1 center-frequency 338000000 connected-receive-module 1 primary
receive-channel 2 center-frequency 346000000 connected-receive-module 1 primary
receive-channel 3 center-frequency 354000000 connected-receive-module 1 primary
receive-channel 4 center-frequency 362000000 connected-receive-module 1 primary
receive-channel 5 center-frequency 530000000 connected-receive-module 2
receive-channel 6 center-frequency 538000000 connected-receive-module 2
receive-channel 7 center-frequency 546000000 connected-receive-module 2
receive-channel 8 center-frequency 554000000 connected-receive-module 2
cable rcc-template 84
rcp-id 00 10 00 10 04
receive-module 1 first-center-frequency 338000000 connected-receive-module 1
receive-module 2 first-center-frequency 562000000 connected-receive-module 2
receive-channel 1 center-frequency 338000000 connected-receive-module 1 primary
receive-channel 2 center-frequency 346000000 connected-receive-module 1 primary
receive-channel 3 center-frequency 354000000 connected-receive-module 1 primary
receive-channel 4 center-frequency 362000000 connected-receive-module 1 primary
receive-channel 5 center-frequency 562000000 connected-receive-module 2
receive-channel 6 center-frequency 570000000 connected-receive-module 2
receive-channel 7 center-frequency 578000000 connected-receive-module 2
receive-channel 8 center-frequency 586000000 connected-receive-module 2
int cable 8/0/0
cable rcc-template 83
cable rcc-template 84