BGP Multihoming 2 providers full or partial?

Mon Jun 1 21:13:47 UTC 2015

This is only a problem if you use so called tier 1 transit providers.

The smaller fish in the pond have multiple transits themselves and will
there by always have an alternative route available.

Regards

Baldur
Den 01/06/2015 22.32 skrev "William Herrin" <bill at herrin.us>:

> On Mon, Jun 1, 2015 at 2:40 PM, Blake Hudson <blake at ispn.net> wrote:
> > A gateway of last resort, also called a backup default route, will take
> care
> > of partitions
>
> No, Blake, it won't. A partition means one of your ISPs has no route
> to the destination. Route the packet to that ISP via a default route
> and it gets sent to /dev/null. More, during a partition you don't get
> to pick which of your ISPs lack the route.
>
> Regards,
> Bill Herrin
>
>
>
> --
> William Herrin ................ herrin at dirtside.com  bill at herrin.us
> Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
>