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[GigabitEthernet]

I suspect (but don't know) that UBR without PCR is the only option which will work with current UK systems.

That was also my suspicion when I first investigated those options.

Well, my curiosity got the better of me here and I gave them all a try. They do in fact all work!

Do the other options make a difference? A tiny bit (perhaps), I gained maybe +-10K by changing, but this may have just been due to changing conditions, different ISP servers, etc.

Therefore, I'd recommend everybody just uses the default option (i.e. UBR without PCR).

[roseway]

It would be an interesting experiment for people on different types of connection to try the different options, to see if any of them do make any significant difference. Of course, the fact that you can change that option in the HG612 doesn't mean that anything responds to it. For example, I have SRA enabled in the HG612, but as we all know, SRA isn't currently configured on any UK DSL system.

In fact, realtime VBR sounds very much like SRA.

[GigabitEthernet]

That's probably a good evaluation of the data Roseway.

[kitz]

Id stick with UBR.  I havent read that cisco link but its to do with traffic quality of the datastream.

iirc BTw already have 2 separate traffic streams set up, and leaving it as unspecified should pick up the correct traffic type as defined by your ISP.  BTVision type traffic is treated differently because its time sensitive and sent in its own stream.

CBR (if it can be set) is an interesting one. Constant Bit Rate is non-interleaved.  Kind of like how the old fixed rate 512/1Mb/2Mb used to be. 
Dont know if it will work with rate adaptive DSL though.  Its my understanding that you have to specify a specific amount of bandwidth to allocate to CBR..  so you could say portion off 2Mbps and make it non-interleaved.  I would imagine the other end of the VC would also have to have the same settings for this to work though.


UBR is "unspecified" and backhaul traffic stream will be managed by BTw.
The other settings involve 'portioning' off parts of your available bandwidth so that 'x' type of traffic only travels in the stream designated, 'voip' traffic only goes in the VBRrt. etc etc

Changing those settings (if they do actually take effect!) may give a slightly higher sync (dont know how it would affect interleave), but it may seriously mess up your throughput speeds.
Those settings are more designed for say a leased line with their own intranet or wide area lan (deliberately didnt type WAN in case it was misunderstood).

[Howlingwolf]

Can you check the MD5 sum of the firmware image matches this: 7e4d07f0c7e9264342a5c6b5f97b4663

$ md5sum bcm96368MVWG_fs_kernel_HG612V100R001C01B030SP06_unlockedgui-nobtagent
7e4d07f0c7e9264342a5c6b5f97b4663  bcm96368MVWG_fs_kernel_HG612V100R001C01B030SP06_unlockedgui-nobtagent

Yes, it matches.

I guess I need to make sure that there isn't an issue with the hardware. I'll try flashing this with other versions of the firmware, starting with B030SP06_unlockedgui.

I can't see it being a hardware problem if wired connections are ok, but you're right. It is something which needs to be eliminated.

[GigabitEthernet]

Still struggling with the DNS not working!

[broadstairs]

Has this potential bug been mentioned in this thread yet? Looks like BT may have to do another update again soon!

Stuart

[c6em]

Not yet in this thread
but elsewhere
http://forum.kitz.co.uk/index.php?topic=13162.msg249001#msg249001

[broadstairs]

There is another page here which is the original post about the finding.

Stuart

[Chrysalis]

expect another new firmware soon.

http://revk.www.me.uk/2013/11/bt-huawei-fttc-modem-bug-breaking-vpns.html

[burakkucat]

expect another new firmware soon.

http://revk.www.me.uk/2013/11/bt-huawei-fttc-modem-bug-breaking-vpns.html

Chrys did you miss Stuart's post, #158, directly above? 

[Chrysalis]

I did prior to posting yes.  I am lazy so no edit or delete

Mainly because he had the url under the word here.  So until clicking it didnt know was same.

[Howlingwolf]

Has this potential bug been mentioned in this thread yet? Looks like BT may have to do another update again soon!

Stuart

I wonder if this is related to Eric's problem with his wireless devices. Streaming media protocols often use UDP as the transport layer for efficiency reasons.

[roseway]

Has this potential bug been mentioned in this thread yet? Looks like BT may have to do another update again soon!

Stuart

I wonder if this is related to Eric's problem with his wireless devices. Streaming media protocols often use UDP as the transport layer for efficiency reasons.

I've been wondering the same thing.

[burakkucat]

Mainly because he had the url under the word here.  So until clicking it didnt know was same.

[off-topic]
Cat-tip -- Just hover your GUI pointer over the word. You can often elucidate significant information (depending upon the browser used) without clicking there upon! 
[/off-topic]