Re: Soliciting your opinions on Internet routing: A survey on BGP convergence

[Hugo Slabbert <hugo () slabnet com>]

On Tue 2017-Jan-10 20:58:02 +0100, Job Snijders <job () instituut net> wrote:

> On Tue, Jan 10, 2017 at 03:51:04AM +0100, Baldur Norddahl wrote:
> > If a transit link goes, for example because we had to reboot a router,
> > traffic is supposed to reroute to the remaining transit links.
> > Internally our network handles this fairly fast for egress traffic.
> >
> > However the problem is the ingress traffic - it can be 5 to 15 minutes
> > before everything has settled down. This is the time before everyone
> > else on the internet has processed that they will have to switch to
> > your alternate transit.
> >
> > The only solution I know of is to have redundant links to all transits.
>
> Alternatively, if you reboot a router, perhaps you could first shutdown
> the eBGP sessions, then wait 5 to 10 minutes for the traffic to drain
> away (should be visible in your NMS stats), and then proceed with the
> maintenance?
>
> Of course this only works for planned reboots, not suprise reboots.

...or link failures.

> Kind regards,
>
> Job

--
Hugo Slabbert       | email, xmpp/jabber: hugo () slabnet com
pgp key: B178313E   | also on Signal

Attachment: signature.asc
Description: Digital signature