[179156] in North American Network Operators' Group
Re: BGP offloading (fixing legacy router BGP scalability issues)
daemon@ATHENA.MIT.EDU (Colin Johnston)
Thu Apr 2 04:04:39 2015
X-Original-To: nanog@nanog.org
From: Colin Johnston <colinj@gt86car.org.uk>
In-Reply-To: <551CF281.30700@winterei.se>
Date: Thu, 2 Apr 2015 09:04:31 +0100
To: "Paul S." <contact@winterei.se>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
> On 2 Apr 2015, at 08:40, Paul S. <contact@winterei.se> wrote:
>=20
> Do you have data on '100% of the traffic' being bad?
>=20
as a example anything in 163data.com.cn is bad
Colin
> I happen to have a large Chinese clientbase, and this is not the case =
on my network.
>=20
> On 4/2/2015 =E5=8D=88=E5=BE=8C 04:35, Colin Johnston wrote:
>> or ignore/block russia and north korea and china network blocks
>> takes away 5% of network ranges for memory headroom, especially the =
large number of smaller china blocks.
>> Some may say this is harsh but is the network contacts refuse to =
co-operate with abuse and 100% of the traffic is bad then why not
>>=20
>> Colin
>>=20
>>=20
>>> On 2 Apr 2015, at 07:59, Mark Tinka <mark.tinka@seacom.mu> wrote:
>>>=20
>>>=20
>>>=20
>>> On 1/Apr/15 19:01, Frederik Kriewitz wrote:
>>>> We're wondering if anyone has experience with such a setup?
>>> Cisco have a feature called BGP-SD (BGP Selective Download).
>>>=20
>>> With BGP-SD, you can hold millions of entries in RAM, but decide =
what
>>> gets downloaded into the FIB. By doing this, you can still export a =
full
>>> BGP table to customers directly connected to your 6500, and only =
have a
>>> 0/0 + ::/0 (and some more customer routes) in the FIB to do =
forwarding
>>> to a bigger box.
>>>=20
>>> BGP-SD started shipping in IOS XE, but I now understand that the =
feature
>>> is on anything running IOS 15.
>>>=20
>>> This would be my recommendation.
>>>=20
>>> Mark.
>=20
