Strange practices?

joel jaeggli joelja at
Mon Jun 7 21:33:25 UTC 2010

It's going to show inconsistent AS which some people may not like, but 
that's just ugly not broken. As the customer, it means your outgoing 
path selection is probably  being made on the basis of some non-global 
attribute, and the return path is entirely at the mercy of your two isps...

I wouldn't do that becuase the alternatives are better and not exactly a 
lot of work, but will it work? yes.


On 2010-06-07 13:50, Dale Cornman wrote:
> Has anyone ever heard of a multi-homed enterprise not running bgp with
> either of 2 providers, but instead, each provider statically routes a block
> to their common customer and also each originates this block in BGP?   One
> of the ISP's in this case owns the block and has even provided a letter of
> authorization to the other, allowing them to announce it in BGP as well.
>    I had personally never heard of this and am curious if this is a common
> practice as well as if this would potentially create any problems by 2
> Autonomous Systems both originating the same prefix.
> Thanks
> -Bill

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