BGP offloading (fixing legacy router BGP scalability issues)

Thu Apr 2 08:12:52 UTC 2015

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 at 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 at 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 at 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.
> 