I have a class C public IP range that was allocated from Apnic.
ISP A = 40 Mb fibre connection
ISP B = 40 Mb fibre connection
Behind both ISP's connections we have a cisco 2801 router
Each router gets a default route only via BGP
Each router advertises our public IP range via BGP to the ISP's
We are attempting to preference ISP A over ISP B to get most of the traffic flowing over the preferred provider.
We have tried the following:
Item ISPA ISPB
prepending None Set 6 x prepended paths
local pref Set to 300 Set to 100
local pref via community Set to 100 Set to 90
MED Set to 50 Set to 350
None of this works - we still get almost all traffic coming into ISPB connection.
Can anyone offer any suggestions on what we would need to do to get some of the traffic from ISPB to ISPA.