Re: Alternative Re: ipv4/25s and above Re: 202211232221.AYC

2022-11-24 Thread Chris Welti
Hi Abe, the problem is that the AMS-IX data only covers the public fabric, but the peering connections between the big CDNs/clouds and the large ISPs all happen on private dedicated circuits as it is so much traffic that it does not make sense to run it over a public IX fabric (in addition to

Re: Brocade SLX Internet Edge

2018-11-01 Thread Chris Welti
Nicolas Fevrier has a very detailed blog post on how Cisco handles the prefixes on their Broadcom Jericho based NCS 5500 gear. https://xrdocs.io/cloud-scale-networking/tutorials/2017-08-03-understanding-ncs5500-resources-s01e02/ I'm pretty sure the principle is more or less the same for the

Re: Advertising rented IPv4 prefix from a different ASN.

2016-08-05 Thread Chris Welti
I would not recommend to do that. If you really do this, please make sure that the owner of the supernet (in this case the university) also does transit for the subnet (which they should as they are supposed to accept and forward traffic for the whole aggregate that they are announcing).

Re: NCS5K?

2016-04-26 Thread Chris Welti
On 26/04/16 02:03, Tom Hill wrote: On 19/04/16 14:46, Chris Welti wrote: According to some slides from a russian cisco connect event, the upcoming small-size NCS 5501 and NCS 5502 will support 1M+ FIB and 50ms per port buffers. Seem to be killer boxes. 48x100GE in 2RU with large FIB & buf

Re: Latency, TCP ACKs and upload needs

2016-04-24 Thread Chris Welti
On 20/04/16 16:27, Leo Bicknell wrote: 90%+ of the stacks deployed will be too small. Modern Unix generally has "autotuning" TCP stacks, but I don't think Windows or OS X has those features yet (but I'd be very happy to be wrong on that point). Regardless of satellite uplink/downlink speeds,

NCS5K?

2016-04-24 Thread Chris Welti
According to some slides from a russian cisco connect event, the upcoming small-size NCS 5501 and NCS 5502 will support 1M+ FIB and 50ms per port buffers. Seem to be killer boxes. 48x100GE in 2RU with large FIB & buffers? Loving it already. I wonder what prices will look like for those. With