Mikrotik NBN NNI head end router Queue issue
Hi Guys, Is anyone using a MikroTik router as an NBN head end unit? And if so have you managed to create a traffic queue scenario which satisfies the NBN 10ms peak burst rate specification http://www.nbnco.com.au/content/dam/nbnco2/documents/sfaa-wba2-product-catal... We need to be able to configure the Peak Burst Size (PBS) down to less than 10ms. Anything in excess of that is dropped by NBN traffic policing. The limitation of the MikroTik OS (and maybe hardware) is that we can only configure PBS down to 1 second (25M/second) The result is that NBN traffic policing drops packets that exceed 0.25M/10ms, significantly impacting TCP throughput and exhibiting the anticipated sawtooth throughput profile as TCP constantly ramps up and drops back due to lost packets. To make it work I think we need to be able to set a peak burst rate such that a 25M NBN service can have a peak burst rate of 0.25M per 10ms or even better would be .125M/5ms (as 10ms is the Max spec of the NBN) If anyone has this working successfully, I would love to hear how you achieved it :) Kind regards Murray Southwell Tasmanet Pty Ltd Manager - Network Services murray@tasmanet.com.au 0361652511 0418145979
HI Murray, they don't support it down that tight, you need to reduce your queue to a slightly slower speed and forget using bursting basically. Regards Paul -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Murray Southwell Sent: Monday, 14 December 2015 10:45 AM To: public@talk.mikrotik.com.au Subject: [MT-AU Public] Mikrotik NBN NNI head end router Queue issue Hi Guys, Is anyone using a MikroTik router as an NBN head end unit? And if so have you managed to create a traffic queue scenario which satisfies the NBN 10ms peak burst rate specification http://www.nbnco.com.au/content/dam/nbnco2/documents/sfaa-wba2-product-catal... We need to be able to configure the Peak Burst Size (PBS) down to less than 10ms. Anything in excess of that is dropped by NBN traffic policing. The limitation of the MikroTik OS (and maybe hardware) is that we can only configure PBS down to 1 second (25M/second) The result is that NBN traffic policing drops packets that exceed 0.25M/10ms, significantly impacting TCP throughput and exhibiting the anticipated sawtooth throughput profile as TCP constantly ramps up and drops back due to lost packets. To make it work I think we need to be able to set a peak burst rate such that a 25M NBN service can have a peak burst rate of 0.25M per 10ms or even better would be .125M/5ms (as 10ms is the Max spec of the NBN) If anyone has this working successfully, I would love to hear how you achieved it :) Kind regards Murray Southwell Tasmanet Pty Ltd Manager - Network Services murray@tasmanet.com.au 0361652511 0418145979 _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
Hi Paul - Thanks for the reply. We have tried dropping 25M services back to 23M and we can still only get around 14M TCP throughput . Have you had any success doing this? Regards Murray -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Paul Julian Sent: Monday, 14 December 2015 10:55 AM To: 'MikroTik Australia Public List' Subject: Re: [MT-AU Public] Mikrotik NBN NNI head end router Queue issue HI Murray, they don't support it down that tight, you need to reduce your queue to a slightly slower speed and forget using bursting basically. Regards Paul -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Murray Southwell Sent: Monday, 14 December 2015 10:45 AM To: public@talk.mikrotik.com.au Subject: [MT-AU Public] Mikrotik NBN NNI head end router Queue issue Hi Guys, Is anyone using a MikroTik router as an NBN head end unit? And if so have you managed to create a traffic queue scenario which satisfies the NBN 10ms peak burst rate specification http://www.nbnco.com.au/content/dam/nbnco2/documents/sfaa-wba2-product-catal... We need to be able to configure the Peak Burst Size (PBS) down to less than 10ms. Anything in excess of that is dropped by NBN traffic policing. The limitation of the MikroTik OS (and maybe hardware) is that we can only configure PBS down to 1 second (25M/second) The result is that NBN traffic policing drops packets that exceed 0.25M/10ms, significantly impacting TCP throughput and exhibiting the anticipated sawtooth throughput profile as TCP constantly ramps up and drops back due to lost packets. To make it work I think we need to be able to set a peak burst rate such that a 25M NBN service can have a peak burst rate of 0.25M per 10ms or even better would be .125M/5ms (as 10ms is the Max spec of the NBN) If anyone has this working successfully, I would love to hear how you achieved it :) Kind regards Murray Southwell Tasmanet Pty Ltd Manager - Network Services murray@tasmanet.com.au 0361652511 0418145979 _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
Hi Murray, 22M should see you OK with a 25M service, 10.5M should see you OK with a 12M service. Unfortunately you have to cut the speed down to reduce bursting, and remember that NBN speeds are Layer2 speeds, you are limiting speeds at layer 3 and need to allow for the overheads as well, this is where most people come unstuck. Regards Paul -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Murray Southwell Sent: Monday, 14 December 2015 11:01 AM To: MikroTik Australia Public List Subject: Re: [MT-AU Public] Mikrotik NBN NNI head end router Queue issue Hi Paul - Thanks for the reply. We have tried dropping 25M services back to 23M and we can still only get around 14M TCP throughput . Have you had any success doing this? Regards Murray -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Paul Julian Sent: Monday, 14 December 2015 10:55 AM To: 'MikroTik Australia Public List' Subject: Re: [MT-AU Public] Mikrotik NBN NNI head end router Queue issue HI Murray, they don't support it down that tight, you need to reduce your queue to a slightly slower speed and forget using bursting basically. Regards Paul -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Murray Southwell Sent: Monday, 14 December 2015 10:45 AM To: public@talk.mikrotik.com.au Subject: [MT-AU Public] Mikrotik NBN NNI head end router Queue issue Hi Guys, Is anyone using a MikroTik router as an NBN head end unit? And if so have you managed to create a traffic queue scenario which satisfies the NBN 10ms peak burst rate specification http://www.nbnco.com.au/content/dam/nbnco2/documents/sfaa-wba2-product-catal... We need to be able to configure the Peak Burst Size (PBS) down to less than 10ms. Anything in excess of that is dropped by NBN traffic policing. The limitation of the MikroTik OS (and maybe hardware) is that we can only configure PBS down to 1 second (25M/second) The result is that NBN traffic policing drops packets that exceed 0.25M/10ms, significantly impacting TCP throughput and exhibiting the anticipated sawtooth throughput profile as TCP constantly ramps up and drops back due to lost packets. To make it work I think we need to be able to set a peak burst rate such that a 25M NBN service can have a peak burst rate of 0.25M per 10ms or even better would be .125M/5ms (as 10ms is the Max spec of the NBN) If anyone has this working successfully, I would love to hear how you achieved it :) Kind regards Murray Southwell Tasmanet Pty Ltd Manager - Network Services murray@tasmanet.com.au 0361652511 0418145979 _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au _______________________________________________ Public mailing list Public@talk.mikrotik.com.au http://talk.mikrotik.com.au/mailman/listinfo/public_talk.mikrotik.com.au
participants (2)
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Murray Southwell -
Paul Julian