Re: [nznog] BRAS Options

You have many options for BRAS, each with their pro's and con's. Cheap option would be buy grey market ASR1K boxes, or scale 7301's horizontally :D Mid price option would be Nokia vSR running on x86 High price option would be physical "big box" router, e.g. Nokia 7750, Juniper MX2/4/9xx The Nokia vSR is a good option, supports hierarchical queues and has extensive RADIUS VSA's that allow you to tune almost every aspect of the subscriber connection. The other benefit is that in-country support from the vendor is excellent. Regards, Andrew On Wed, Nov 8, 2017 at 1:05 PM, Sam Silvester wrote:

Concur, this works fine.

If you redistribute connected and static on your BRAS, and then use aggregate-address statements for your dynamic pools, you'll end up with only leaking actual static users - this is done in more than a few networks with many tens of thousands of static subscribers. BGP loves it, trust me :)

On Wed, Nov 8, 2017 at 10:30 AM, Peter Lambrechtsen wrote:

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I wouldn't have thought Static vs Dynamic should be too much of a problem scaling horizontally depending on how you run your core unless you are intending to statically route from the BRAS to the internet. If you have a core router that you run BGP over a MPLS network to your BRAS, then you can just export each route as a /32 into your MPLS network and it won't matter which BRAS the customer turns up on.

Yes that would end up with a reasonably sized route table on your core to the internet but you are still only talking sub 16k subs so that should be doable even with x86 tin.

On Wed, Nov 8, 2017 at 12:51 PM, Stan Rivett wrote:

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The multiple 7301 track was were I had been heading with one in Christchurch and one in Auckland. The problem is that most of our clients are RBI and we have no control over which router they appear on from our connections to Vodafone. That would be OK if we used dynamic IPs but we don't and its way too late to go back from that.

Stan Rivett ------------------ Netspeed PO Box 5691 Dunedin P: +64 3 481 7245 C: +64 21 323 841 ------------------

On 8 November 2017 at 12:34, Sam Silvester wrote:

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Hivemind :)

On Wed, Nov 8, 2017 at 9:56 AM, Gavin Tweedie wrote:

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Can you tell Sam and I used to work at the same company? :)

On Wed, Nov 8, 2017 at 8:24 AM, Sam Silvester wrote:

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To a point, the number of subscribers doesn't matter as much as the throughput. If you're looking at 16k+ subs on a single box, you probably need to start being a little careful but otherwise just make sure you've got a decent RP and you should be right.

If you simply need to shift (say) 10Gbps of traffic with "more than a few thousand" but say less than 16k, then anything in the ASR range with an RP2 and ESP40 will almost certainly be ample.

Another thought, considering you mention the 7301, is to scale out horizontally - it's not clear if you're already doing this. The nice bit about that also is you could have a few 7201s sharing the load 4 ways, which means your IP pool overhead to cater for a box failure is also much less than running only two boxes.

On Wed, Nov 8, 2017 at 9:41 AM, Dave Mill wrote: > > A Juniper MX40 or MX80 seems to meet your needs there - depending on > exact subscriber figures. From memory if every customer is in QinQ you won't > be able to have more than 8000 on a MX80 series chassis due to interface > limits. > > Dave > > On Wed, Nov 8, 2017 at 12:07 PM, Stan Rivett > wrote: >> >> Crikey, thanks for all the replies >> >> Yes we need 10 Gbit, at least 3 ports and I'd rather not be too >> specific about numbers but more than a few thousand. >> >> Apologies for being a bit of a cheap bugger but you know what its >> like as an SME, it all comes out of my pocket ;-) >> >> Cheers >> >> Stan Rivett >> ------------------ >> Netspeed >> PO Box 5691 >> Dunedin >> P: +64 3 481 7245 >> C: +64 21 323 841 >> ------------------ >> >> On 8 November 2017 at 11:14, Tim Price wrote: >>> >>> Juniper MX5 + licensing shouldn’t cost you more than $30k depending >>> on your Juniper partner status and where you buy it from. >>> >>> >>> >>> From: on behalf of Stan Rivett >>> >>> Date: Wednesday, 8 November 2017 at 11:02 AM >>> To: nznog >>> Subject: [nznog] BRAS Options >>> >>> >>> >>> Hi all >>> >>> >>> >>> The time has come to replace my poor old Cisco 7301 and the quote I >>> got for an ASR1002-HX made my eyes water. Still waiting for a Juniper quote >>> but the general discussion seemed like similar numbers. >>> >>> >>> >>> Are there any other reliable options out there that don't cost more >>> than my first house? >>> >>> >>> >>> Cheers >>> >>> >>> >>> Stan Rivett >>> >>> ------------------ >>> >>> Netspeed >>> >>> PO Box 5691 >>> >>> Dunedin >>> >>> P: +64 3 481 7245 >>> >>> C: +64 21 323 841 >>> >>> ------------------ >>> >>> _______________________________________________ NZNOG mailing list >>> NZNOG(a)list.waikato.ac.nz https://list.waikato.ac.nz/mailman/listinfo/nznog >> >> >> >> _______________________________________________ >> NZNOG mailing list >> NZNOG(a)list.waikato.ac.nz >> https://list.waikato.ac.nz/mailman/listinfo/nznog >> > > > _______________________________________________ > NZNOG mailing list > NZNOG(a)list.waikato.ac.nz > https://list.waikato.ac.nz/mailman/listinfo/nznog >

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