Dell EMC SmartFabric OS10 User Guide Release 10.5.0

OS10 uses the MULTI_EXIT_DISC or MED attribute when comparing EBGP paths from the same AS. MED comparison is not performed in paths from neighbors with different AS numbers.

1. Enable MED comparison in the paths from neighbors with different AS in ROUTER-BGP mode.

   always-compare-med

2. Change the best path MED selection in ROUTER-BGP mode.

   bestpath med {confed | missing-as-best}

   • confed—Selects the best path MED comparison of paths learned from BGP confederations.
   • missing-as-best—Treats a path missing an MED as the most preferred one.
   • missing-as-worst—Treats a path missing an MED as the least preferred one.

Modify MED attributes

OS10(config)# router bgp 100
OS10(conf-router-bgp-100)# always-compare-med
OS10(conf-router-bgp-100)# bestpath med confed