[afnog] Help Please - is my ISP Stripping my prepends?

Alex Rhys-Hurn alex at itworx.co.ke
Fri May 30 07:37:06 UTC 2014


Hello everyone, 

This is my first post here, I hope somebody can help. 

I have a /23 which I have divided in to two /24s 

My objective is to balance (as far is as possible) traffic across two ISP links using filters with prepend. 

I have announced as follows: 

194.9.a.0/24 via ISP1 with no prepend 
194.9.b.0/24 via ISP1 prepended 3x 
194.9.a.0/23 via ISP1 with no prepend 

and 

194.9.a.0/24 via ISP2 prepended 3x 
194.9.b.0/24 via ISP2 with no prepend 
194.9.a.0/23 via ISP2 prepended 3x 

When I use the looking glass at lg.he.net I can see the prepends from ISP1 properly, but I cannot see the prepends from ISP2 
, my traffic works over both links but is very heavy on ISP1 

Does this mean the ISP is stripping the prepends? Is there anything I can do about it? 

I hope this is clear, and that somebody may have some insight. 

Many thanks in advance. 

Alex 

-- 
Alex Rhys-Hur n | ITworX Limited 
P.O. Box 1649, 00502, Karen, Kenya 
Tel: +254 (0) 20 2444824 | Cell: +254 (0) 724 972541 
Web: www.itworx.co.ke 





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