BGP L2VPN EVPN Route Type 4 | Ethernet segment route

BGP L2VPN EVPN Route Type 4 | Ethernet segment route |

++ A Ethernet segment identifier (ESI) number identifies this Ethernet segment, which we have manually configured and can be automatically.
++ When a single homed CE is attached to an Ethernet segment, the ESI value is zero. CE2 is singled homed
++ PEs automatically imports the route based on matches ESI Import Community.
++ After this DF Designated Forwarder (DF) election will happen b/w PE1 & PE2. [ PE1 is DF in our toplogy]
++ DF[PE1] is responsible for forwarding BUM frames on a segment towards CE1