1) IGP metric to BGP next hop is different than MED. MED is actually a BGP attribute that can be set automatically or manually set by the peer AS to influence the best exit point, whereas the IGP metric is the metric for getting from BGP peer receiving the route to the BGP next hop set in the BGP update.
2) This is actually an IOS optimization. All other parameters being equal, IOS doesn't replace the current path solely based on the router-id. The current path is kept has the best one.
Harold Ritter Sr. Technical Leader CCIE 4168 (R&S, SP) firstname.lastname@example.org México móvil: +52 1 55 8312 4915 Cisco México Paseo de la Reforma 222 Piso 19 Cuauhtémoc, Juárez Ciudad de México, 06600 México
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