[c-nsp] BGP and NAT

Richard Mikisa rmikisa at gmail.com
Thu Feb 2 07:08:25 EST 2006

Hi all,

I have  two router A and B running BGP. A is connected to my general network
which is natted and runs off the block and B is connected to
an IX. Using the one-to -one Nat on the PIX, I have the router at the IX (B)
running on a public IP address.  Router A however which has an iBGP session
with B has a ip. With all the BGP configured, I have everythig
working 'alright'.. as in i get the router at the IX to peer with the other
routers. It then sends those routes to my router A. Upto that point,
everything seems fine. Trouble is I can't pass traffic. The routing is fine.
Traceroutes for the Natted network get to the IX router and then,nothing.
Traceroutes for my peer partners also die at my IX router and die.e I am
thinking it's the NAT. Question is, is there away around it?

Ps. I know I should be desisting from Nat and I am but for now, I want to
see if I can get this to work as I clean house.


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