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Author Topic: Upstream - why so bad / good  (Read 256 times)

Weaver

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  • Retd sw dev; A&A; 3 ◊ 7km ADSL2; IPv6; Firebrick
Upstream - why so bad / good
« on: February 01, 2018, 03:33:42 AM »

Upstream

am wondering why my linesí upstream performance is so bad or good?

I has been like this for a couple of years
   line a.1   560k - 570k
   line a.3   440k - 450k
   line a.4   450k - 500k

( line 4 was usually around the 500k mark, recently dropped by 45k suddenly which is unusual.)

a.1 and a.3 share the same drop cable, a.4 is on its own.

Line 1 is the mystery - why has it so good, it has always been 22-29% better than line 3 _and_ usually 10% better than line 4?

Line a.3 why so bad relatively- so much worse usually than line 4 and, leaving aside the recent blip, a lot worse than line a.4 which is usually around ~500k as opposed to line a.3ís constant 440k-450k.

I wonder what I can do to improve line a.3?
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kitz

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Re: Upstream - why so bad / good
« Reply #1 on: February 03, 2018, 12:59:41 PM »

a.3 - could it be crosstalk from a.1 with them being in the same pair?   Not sure  :-\

The sudden drop on the upstream on a.4 could be an emerging HR fault. 
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