Re: BGP offloading (fixing legacy router BGP scalability issues)

[Colin Johnston <colinj () gt86car org uk>]

You would be surprised at the good effect and bandwidth incoming/outgoing gained.
allow blocks on exception and document and check.

drastic action done due to unresponsive contacts and 100% bad traffic

Colin


> On 2 Apr 2015, at 09:06, Paul S. <contact () winterei se> wrote:
>
> 163data is announced as Chinanet, a China Telecom brand.
>
> Dropping 4134 (http://bgp.he.net/AS4134) globally will get my customers up at my doors with pitchforks fairly fast, I 
> dunno about yours....
>
> Simply too big to do anything that drastic against.
>
> On 4/2/2015 午後 05:04, Colin Johnston wrote:
> > > On 2 Apr 2015, at 08:40, Paul S. <contact () winterei se> wrote:
> > >
> > > Do you have data on '100% of the traffic' being bad?
> > 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.
> > >
> > > On 4/2/2015 午後 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
> > > >
> > > > Colin
> > > >
> > > >
> > > > > On 2 Apr 2015, at 07:59, Mark Tinka <mark.tinka () seacom mu> wrote:
> > > > >
> > > > >
> > > > >
> > > > > 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).
> > > > >
> > > > > 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.
> > > > >
> > > > > BGP-SD started shipping in IOS XE, but I now understand that the feature
> > > > > is on anything running IOS 15.
> > > > >
> > > > > This would be my recommendation.
> > > > >
> > > > > Mark.