[c-nsp] allowas-in : Number of occurances of AS number

[Mark Tohill]

Hi,

 

I am hoping to implement BGP's 'allowas-in' command to get around a
problem with isolated PoP's.

 

I have tested this in a lab and prefix's from other PoP's are passed
over eBGP. :-)

 

What I don't understand is this argument on CLI:

 

'<1-10>  Number of occurances of AS number'

 

What is the purpose of this?

 

Are there any security considerations with using allowas-in i.e losing
inter-PoP communication in case of 'bad' routes?

 

Mark.