VendorSpecific TLV 43 Cisco/SA Docsis 1.1/2.0 options encode/decode issue about docsis HOT 4 CLOSED

Hello Sergey,

I see this as a feature request, not a bug. I will also add a note to know limitations of the tool about this. This is how this tool worked also before, the only difference is that TLV 43.4 was not yet implemented before. I think it was not even developed by Cablelabs when Cisco/SA choosed subTLV 4 for their needs.

This happens because there is no check in place at this moment to check which vendor implementation of TLV 43.4 is in the config file. I implemented the Cablelabs Vendor Identifier but whenever a different vendor will try to use the same number, this problems can appear.

Nowadays vendor specific TLVs are not common anymore and vendors are using OIDs for their specific needs instead of TLVs. I also suggest that you should check with Cisco/SA if they have an OID which is doing the same configuration like TLV 43.4 and 43.6. If they have an OID, you can use the OID as a workaround instead of the TLV value.

You did not find "DOCSIS vendor specific Extension Field" in "docsis_symtable.h" because I did not implement that.

For whoever is interested to code this, we need to first check if we encode VendorID 0xffffff and only after that use the values from docsys_symtable, if the VendorID is different from 0xffffff we should consider all as being vendor independent and encode/decode as GenericTLV. I will think on a way to implement this feature but the architecture of the utility did not take into consideration that same TLVs can have different names and can be encoded different.

Best regards,
Adrian.

from docsis.

Sergey, please give it a try with the branch tlv43_vspecific which can be found in my fork on Github.
Here you have a link:
https://github.com/AdrianSimionov/docsis/archive/tlv43_vspecific.zip

Let me know if this fixes the issue you had. It seems to be working fine for me.

from docsis.

Adrian,

Thanks for the new version with tlv43_vspecific.
I built and checked the new docsis with my bootfiles and modems.
The Encode/decode are working and modems accept new bootfiles.
So you can add these changes to github.

from docsis.

I merged in the changes. I figure if AdrianSimionov did all the hard work, the least I can do is click a couple buttons to create a pull request and merge it. ;) Thanks AdrianSimionov, you are awesome!

from docsis.