[afnog] We can do...

[Frank Habicht]

Hi all,

while the situation about these prefixes looks better now, please let me
also share the tutorials that NSRC have put together:

https://learn.nsrc.org/bgp/as_path_filtering

prefix filitering video clip is here
https://learn.nsrc.org/bgp/prefix_filtering

the whole series of BGP for All is freely available here
https://learn.nsrc.org/bgp

Hope this helps someone.

Regards,
Frank

On 18/08/2021 10:27, Frank Habicht wrote:
> I forgot this:
> https://bgpfilterguide.nlnog.net
> and
> https://bgpfilterguide.nlnog.net/guides/no_transit_leaks/
> 
> Frank
> 
> On 17/08/2021 23:28, Noah wrote:
>> I have pinged Evans/WIOCC meanwhile.......
>>
>> *./noah*
>> *
>> *
>>
>>
>> On Tue, Aug 17, 2021 at 8:25 PM Frank Habicht <geier at geier.ne.tz
>> <mailto:geier at geier.ne.tz>> wrote:
>>
>>     ...better than this:
>>
>>       197.214.1.0/24 <http://197.214.1.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.2.0/24 <http://197.214.2.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.3.0/24 <http://197.214.3.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.4.0/24 <http://197.214.4.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.5.0/24 <http://197.214.5.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.6.0/24 <http://197.214.6.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.7.0/24 <http://197.214.7.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.8.0/24 <http://197.214.8.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.9.0/24 <http://197.214.9.0/24>         
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 174 9498 327708 37531 ?
>>       197.214.10.0/24 <http://197.214.10.0/24>        
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 174 9498 327708 37531 I
>>       197.214.11.0/24 <http://197.214.11.0/24>        
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.12.0/24 <http://197.214.12.0/24>        
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.13.0/24 <http://197.214.13.0/24>        
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 174 9498 327708 37531 I
>>       197.214.14.0/24 <http://197.214.14.0/24>        
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 174 9498 327708 37531 I
>>       197.214.15.0/24 <http://197.214.15.0/24>        
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 5511 327708 37531 I
>>       197.214.16.0/24 <http://197.214.16.0/24>        
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 174 9498 37531 I
>>       197.214.32.0/22 <http://197.214.32.0/22>        
>>     155.12.0.158                            37027
>>     15399 37662 37662 25543 174 9498 37531 I
>>
>>     AS 25543 (ONATEL/FasoNet BF) --  you really want to advertise
>>     reachability to prefixes you've learned from AS174 and AS5511
>>     (upstreams) to your friends at WIOCC (AS37662) ?
>>     They will send the traffic to you.
>>
>>     Short rule: whatever you learn from any upstream or peer - don't
>>     advertise this to any upstream or peer.
>>
>>     WIOCC,
>>     maybe just filter all routes from your customer with AS_PATH matching
>>     ".*
>>     (174|209|286|701|1239|1299|2828|2914|3257|3320|3356|3549|5511|6453|6461|6762|7018|12956)
>>     .*" or something similar ?
>>
>>     Frank
>>
>>
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