By default, the system compares the MED attribute on different paths from within the same AS (the bgpalways-compare-med command is not enabled).NOTE: All newly configured neighbors and peer groups are disabled. To enable a neighbor or peer group,enter the neighbor {ip-address | peer-group-name} no shutdown command.The following table displays the default values for BGP in the Dell Networking OS.Table 9. BGP Default ValuesItem DefaultBGP Neighbor Adjacency changes All BGP neighbor changes are logged.Fast External Fallover feature DisabledGraceful Restart feature DisabledLocal preference 100MED 0Route Flap Damping Parameters half-life = 15 minutesreuse = 750suppress = 2000max-suppress-time = 60 minutesDistance external distance = 20internal distance = 200local distance = 200Timers keepalive = 60 secondsholdtime = 180 secondsAdd-path DisabledEnabling BGPBy default, BGP is not enabled on the system. The Dell Networking OS supports one autonomous system (AS)and assigns the AS number (ASN).To establish BGP sessions and route traffic, configure at least one BGP neighbor or peer.In BGP, routers with an established TCP connection are called neighbors or peers. After a connection isestablished, the neighbors exchange full BGP routing tables with incremental updates afterward. In addition,neighbors exchange KEEPALIVE messages to maintain the connection.In BGP, neighbor routers or peers can be classified as internal or external. External BGP peers must beconnected physically to one another (unless you enable the EBGP multihop feature), while internal BGP peersdo not need to be directly connected. The IP address of an EBGP neighbor is usually the IP address of theBorder Gateway Protocol IPv4 (BGPv4) 210
