How packets find the nearest PoP

How packets find the nearest PoP An architecture diagram generated by Archify. Visitor · browser in Singapore · Architecture component Visitor browser in Singapore Eyeball ISP · access network AS · Architecture component Eyeball ISP access network AS Internet exchange · SGIX or Equinix peering · Architecture component Internet exchange SGIX or Equinix peering Tier-1 transit · backbone AS path · Architecture component Tier-1 transit backbone AS path CF edge SIN · anycast, best path wins · Architecture component CF edge SIN anycast, best path wins CF edge NRT · only if SIN unreachable · Architecture component CF edge NRT only if SIN unreachable peering Legend Frontend Cloud External

Anycast

  • • Same prefix announced from every PoP
  • • BGP best path decides which PoP answers