Assumptions, assumptions.
If your IPSEC is being done in hardware and you have appropriate QoS
mechanisms
in your network, you will probably not be able to pass your best effort
traffic but the rest should be OK.
Can we get back to the regularly scheduled programming
instead of throwing big numbers around?
Barry had a point, if you do IPSEC stupidly, it does not protect you.
If you pay attention to detail, it does help. It is not the panacea.
For the purpose of securing BGP, I think IPSEC is easy to configure (at
least on IOS which is what I'm used to), and will do the job. And for
this application, I don't see why cert's can't be used either.
Regards
Bora