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Re: [GROW] Comment on draft-iops-grow-bgp-session-culling

Gert Doering <gert@space.net> Tue, 14 March 2017 11:23 UTC

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Date: Tue, 14 Mar 2017 12:23:42 +0100
From: Gert Doering <gert@space.net>
To: Tore Anderson <tore@fud.no>
Message-ID: <20170314112342.GG2367@Space.Net>
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Cc: grow@ietf.org, draft-iops-grow-bgp-session-culling@ietf.org
Subject: Re: [GROW] Comment on draft-iops-grow-bgp-session-culling
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Hi,

On Tue, Mar 14, 2017 at 07:22:25AM +0100, Tore Anderson wrote:
> By the way, as an IXP operator, you also have the possibility to simply
> shut down your members' interfaces prior to performing maintenance,
> instead of doing culling. 

You can, but if you have a LARGE IXP (like DECIX or AMSIX etc.), you
can cull much more selectively  - "we need to work on that particular
corner, only ISPs affected to <switch 34> are affected", so you cull
BGP to and from there.  Other traffic on the fabric is unaffected,
and sessions to the affected routers go down nicely - just turning off
the ports on "switch 34" will see the peering partners time out...

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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