Weeeell, people are setting it to all sorts. Some are using time based 
constraints - so really throttle back to 100/200kb during business hours and 
let it go unlimited outside that. Others use a standard value and let BITS get 
on with it, others use GPO and set different policy by location.

We find that even a limit of 2/3/4/5mb/s works well with BranchCache - it just 
seems to behave more gracefully. If everything is going full speed then timings 
can be out, and some clients can end up going back to the DP instead of doing 
P2P.

Obviously it's easier if you have uniform bandwidth availability across all 
your sites - but who the heck has that!?

As for priority - CM uses Normal Priority for its Background transfers, and 
Foreground (crazy unlimited) for user initiated downloads. So policy wise, you 
only really need to set a rate for Normal as far as CM is concerned.

There is a lot you can do to avoid congestion - targeting 'seed' PCs at each 
site for instance is popular. These nominated PCs act as a 'beachhead' and if 
you can get content to them and into the BranchCache cache overnight then all's 
good. Apps work better than packages too as they have that randomization built 
into the start time so generally one PC will kick off ahead of the others which 
is ideal.

From: [email protected] [mailto:[email protected]] On 
Behalf Of Roland Janus
Sent: 03 June 2015 23:49
To: [email protected]
Subject: RE: [mssms] BITS

What are people setting it to. "That depends on your network". Doh...

Still, any pointers, especially with those priority settings.
Is unlimited a good thing at all?


From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Phil Wilcock
Sent: Dienstag, 2. Juni 2015 21:27
To: [email protected]<mailto:[email protected]>
Subject: RE: [mssms] BITS

In general, BITS will attempt to scale back a transfer's bandwidth usage for as 
long as there's bandwidth contention it can detect , which means "over the same 
IGD (Internet Gateway Device)" if the IGD supports the right kind of traffic 
counter queries, or "from the same machine" otherwise), and it will 
retry-after-xx seconds for many types of outright failures to transfer.

In reality - BITS doesn't get the info from the IGD, so it reverts to using the 
NIC speed as it's available bandwidth which is less than ideal, so it's best to 
throttle it using policy. In our testing we found that BranchCache worked even 
better if BITS was throttled - even just slightly.

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Roland Janus
Sent: 02 June 2015 19:57
To: [email protected]<mailto:[email protected]>
Subject: RE: [mssms] BITS

What is BITS really doing to no get into the way or throttle?

What I thought, it basically only knows what else is on the NIC is uses, it 
doesn't know if there is anything else in the pipe.
True?

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Marcum, John
Sent: Dienstag, 2. Juni 2015 20:08
To: [email protected]<mailto:[email protected]>
Subject: RE: [mssms] BITS

Someone once told me the only way to know how fast you can go on a given road 
was to try it too fast once.

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Andreas Hammarskjöld
Sent: Tuesday, June 2, 2015 2:43 AM
To: [email protected]<mailto:[email protected]>
Subject: RE: [mssms] BITS

We talked about this senior... *sigh* so many times. This is a wet dream that 
will never come through.

Gonna open up a can of worms with this but here it goes. The ONLY way (and the 
"other vendors" will tell you different with their mumbo-jumbo technology) you 
can tell how much bandwidth you got on a pipe is to try to cram as much data 
through as possible for a period of time. WAN software today is very 
sophisticated and will allow bursts etc. for periods of time depending on 
certain scenarios.

Far more superior people have done many hours on this subject: The A**shole 
project, sorry Assolo, got some very interesting reading: 
http://netlab-mn.unipv.it/assolo/

Think of it like answering this question, how fast can you go on a certain road?

//A

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Phil Wilcock
Sent: den 2 juni 2015 09:29
To: [email protected]<mailto:[email protected]>
Subject: RE: [mssms] BITS

Haha - wasn't expecting that Roland :)

My number 1 is - Accurate end-to-end bandwidth calculation..

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Andreas Hammarskjöld
Sent: 02 June 2015 08:18
To: [email protected]<mailto:[email protected]>
Subject: RE: [mssms] BITS

Oh man!!! :)

//A

From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Roland Janus
Sent: den 2 juni 2015 08:29
To: [email protected]<mailto:[email protected]>
Subject: RE: [mssms] BITS

Make it work better? Make it work like OneSite? :)



From: [email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Andreas Hammarskjöld
Sent: Montag, 1. Juni 2015 22:25
To: [email protected]<mailto:[email protected]>
Subject: [mssms] BITS

Hey,

Got an upcoming meeting with the BITS dev team, anything that you guys see 
missing that should be fixed? Or something that you never found the answer too?

Anything accepted as long as it's not in the form of "make it work". :)

Br,

//Andreas

----------------------------------
Co-Founder
+46727253995
http://2PintSoftware.com
http://twitter.com/AndHammarskjold






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