[193320] in North American Network Operators' Group
Re: Soliciting your opinions on Internet routing: A survey on BGP
daemon@ATHENA.MIT.EDU (Hugo Slabbert)
Tue Jan 10 15:14:25 2017
X-Original-To: nanog@nanog.org
Date: Tue, 10 Jan 2017 12:14:21 -0800
From: Hugo Slabbert <hugo@slabnet.com>
To: Job Snijders <job@instituut.net>
In-Reply-To: <20170110195802.GD2066@hanna.meerval.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
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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.
=2E..or link failures.
>
>Kind regards,
>
>Job
--=20
Hugo Slabbert | email, xmpp/jabber: hugo@slabnet.com
pgp key: B178313E | also on Signal
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