Vaibhav Singh

Blog - vaibhavsingh.com

Month: July 2015

BGP aggregation – suppress generation of anchor null0 local routes

A scenario came up when a colleague was working on a project where his router was peering with a 3rd party router over eBGP. The router was performing aggregation for 10.x.x.x subnets, summary-only as 10.x/16. We know that BGP will generate a null0 anchor route automatically for the summary address. Now a situation occurred where […]

Personal IPv6 addresses for individuals?

Been going through IPv6 ATC videos by INE, wondering if an individual can register or apply for a personal IPv6 provider independent (PI) space? You know, since there is so much of it. I’d imagine everyone could pay a small fee and register them, much like we do with domain names. APNIC application form seems […]

BGP backdoor

This topic is about BGP’s ability to prefer another router (kinda de-prefer, actually). The following diagram will make it clear. In this situation, it may be a better choice to traverse from R1 to R2 via the point-to-point link instead of going over the ISP Cloud. Here R1 and R2 are eBGP peers only. The […]

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