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185 posts

Master Geek

#196838 14-Jun-2016 20:01
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Hi there,


Recently switched over to Bigpipe and seem to be struggling with slow connectivity, which I think may be related to my settings on the edgerouter lite. 


Does anyone have a standard bigpipe ERL config to share? I know Michaelmurfy uses vlan tagging, but are there others that use the ERL without vlan tagging? What MTU settings do you use?

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Uber Geek

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  #1571959 14-Jun-2016 20:57
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MTU settings will need to be set to what the ISP supports - it's not a number you make up. In 99% of cases an ISP supports 1492 via PPPoA or PPPoE. Some ISP's support 1500. You'd need to check what BigPipe supports as it's maximum.










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381 posts

Ultimate Geek

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  #1571997 14-Jun-2016 22:06
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Shouldn't have to stuff around during with MTU. Basically upgrade the firmware if you haven't. Reset the configuration and follow instructions to set up the ppoe interface.

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  #1572043 15-Jun-2016 00:00
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The correct MTU in BigPipes case is 1492 on the PPPoE interface, 1500 internally.

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185 posts

Master Geek

  #1574756 16-Jun-2016 01:22
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michaelmurfy: The correct MTU in BigPipes case is 1492 on the PPPoE interface, 1500 internally.






Thanks - that makes sense - it seems to be working better now.

163 posts

Master Geek

  #1577611 21-Jun-2016 12:00
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1) enable MSS clamping on the ERL if you haven't already


2) in the future, if you suspect an MTU issue, test by changing it on your PC. MTU is end-to-end and should be configured correctly on hosts (not routers, but that helps too).


185 posts

Master Geek

  #1577636 21-Jun-2016 12:57
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Yes thanks - I've had TCP clamped at 1452, and it can make a difference to browsing speeds and downloads. 


I'm still investigating the slow speed test results with Bigpipe, but the first set of results that I was looking into in this thread was related to my offloading settings rather than the clamping.







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