Dear;
I have a CMTS UBR-7242vx m28u he has 4 cards and NPE-G1. would make it possible to setup a Downstream Channel Bonding maybe just changing the NPE-G1 by a NPE-G2 or necessarily the cards must be DOCSIS 3/0?
As I researched the BSR 64000 provides to do this. The plates are 2.0 and DOCSIS downstream channel bonding can configure.
For channel bonding you would have to change to MC88V linecards
And the MC88V requires other upgrades such as NPE-G2 processor. Have a look here in the "system requirements" section :
http://www.cisco.com/en/US/prod/collateral/modules/ps4969/ps10737/data_s...
Please check,
He had seen the defaults for DOCSIS 3.0 WHAT neat but I want to try it with the current cards do channing bonding without investing in hardware since I'm in Brazil and is expensive to buy DOCSIS 3.0 CMTS.
See the link below for an upgrade ios in which is compatible with UBR-7246vxr mc28u with the plates and the bounding channing is what I saw. do you think?
http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/ubr_ds_bon...
with the 7246 vxr and MC 28U combo with IOS 12.2.33.x you can do Load balancing across all the cards but you can not do bonding.
The difference, with load balancing there will be up to 8 downstreams to a particular area but the modems can only use one at a time, the CMTS can be configured to switch the modems from DS to DS depending on load.
With bonding, docsis 3 modems would be able to lock onto all 8 downstreams at once and use any or all to receive data.
Bonding requires the MC88V card, Load balancing works with the MC88V and MC28U cards.
I have questions yet. see attached information I took from the motorola site. the plate is DOCSIS 2.0 infoma and the possibility of making channel bonding. by analogy believe that cisco would not fall behind and has the same functionality in CMTS UBR-7246vxr with mc28u.
Thank peloas comments.
Yea, but you'd only be getting 2 channels, for true-blue Docsis 3, you'd need their tx32/rx48 cards, You're not getting that good of deal. Besides, I don't think I'd buy a Motorola CMTS no matter how good it looked on paper.
Arris and Cisco together account for probably 90% of the CMTS market and there is a reason for that.
We have DOCSIS 3.0 deployed in our BSRs, if you have 2x8 cards it'll only work with the 2.0 models. The channel bonding works fine for the D3.0 modems, for the legacy modems (2.0 or 1.1) you can only enable dynamic load balancing between 2 DS channels (same CMTS card). Please make sure that if you have 2x8 cards, don't upgrade to the 5.3.x software version, there is a bug that disables the modem for forwarding traffic if it is bonded and BPI is active (it gets stuck in online pk state).
For Cisco i'm not quite sure how it works, we have a couple of 7246 but no D3.0 deployed. As I understand you need to have the MC88 cards with NPE-G2 and a specific IOS version.
I wouldn't recommend Motorola over Arris or Cisco.
Dear;
I have a UBR-7246vxr complete with plates and already configured mc28u balancing. We are planning to work at higher speeds like 12-20mbps but since we are a small operation the money is short. so I'm trying to do with current hardware. I'm based in the attached document from cisco. otherwise we will soon buy another UBR-7246vxr complete when I can try, of course the cable modem will have to be DOCSIS 3.0, when completing the tests inform you here. for now thanks for the comments.
the cards must be DOCSIS 3/0?
gurjeet
this is the big question. if the card is DOCSIS 3/0 would not be discussing this issue. mc28u plates are DOCSIS 2.0 but from what I understand the documentation of cisco is possible to make downstream bonding simply by upgrading the ios and the cable modem must be DOCSIS 3.0. at least that I understood and so receive the new CMTS going to do before installing a laboratory simulation.
I think this is what you're thinking of:
http://www.cedmagazine.com/articles/2006/05/docsis-2.0b
the article is a bit old and in general s what I intend. by the way turned 2.0b DOCSIS 3.0 Downstream Bonding for Bronze Certification for cisco and I believe only works with DOCSIS 3.0 cable modem but can be DOCSIS 2.0 CMTS. this is my goal.
Well, Your machine should support it, but you'll only be bonding 2 channels, I'm assuming you are already load balancing. You just need to make sure you're running the latest IOS per the docs there. I don't think it would be a good idea to try to reconfigure your live CMTS, you should really have another unit to set up on a test bench to make sure you can configure it right and make it work.
Honestly, I really don't think its worth the effort, you're not going to gain much only bonding 2 downstreams, because only the d3 modems you deploy will use that, the rest of your 2.0 modems will still just load balance. You'd be better off investing in the npe-g2 and a mc88v card. I know the mc88v can be had for less than 30k now, its pretty inexpensive. But before you go Cisco, you might want to look at ARRIS, they might come in even cheaper, and if you decide later you want to use their awesome new home gateways, you'd already have the platform.
In the long run, you're better off spending money moving to full docsis 3, rather than spending ANY money on an interm solution.
ok! actually I'm already doing load balance. as I'm bo Brazil DOCSIS 3.0 equipment become even more expensive than maybe it's worth the effort, because our goal is to sell more immediately speeds up to 20mbps. I still want to see the possibility of joining two or four plates mc28u downstream. by the way only testing.
You can't join the plates in that manner, you can only bond inside a mac domain, so 2 will be the limit. I still wouldn't recommend selling alot of 20meg packages though, and I would restrict them by bandwidth usage per month if you have that monitoring capability. Remember, it'd only take 3 of those modems to max your channels out. (in theory, if they consumed at max rate..) You could run two plates on the same plant simultaneously, if you've got the channel spacing in your forward and return to do it, and you might be able to load balance back and forth between them, (I'm not entirely sure about that) but you just need to make sure you've got 4 channels available for the downstream and use different frequencies on the returns, say run one card with 36mhz channels and the other card at 29mhz, etc. You could bond two sets of two, and that might help you a bit. You could manually balance the load too, by specifying the primary downstream in the modems config file, but that can be a bit of a pain.