Technical Architecture
What is Anycast
Scenario | Packet Replication | Receiver | |
---|---|---|---|
Unicast | Unicast | Communication from a single source to a single receiver | No need for replication |
Mutilcast | Multicast | Communication from a single source to several receivers | Multiple copies needed |
Broadcast | Broadcast | Communication from a single source to all resources within its subnet | Multiple copies needed |
Anycast | Anycast | Communication from a single source to a group of receivers, but the actual receiver is still one, determined by routing protocol | No need for replication |
Differences from Ordinary EIP
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Ordinary EIP: Declared in a single Region, global players need to access across Regions via the public network. High latency, high jitter.
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Anycast EIP: Declared in multiple Regions, global player users access the UCloud Global backbone network from the nearest point and complete the transmission via the UCloud Global dedicated line. Low latency, low jitter.
Global Acceleration
Outgoing Traffic
- Transmitted directly to the public network through the source UCloud Global node.
Incoming Traffic
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Inter-room backhaul: Public network routing uses BGP to select the route, chooses the appropriate room entrance according to the principle of proximity, and sends the traffic to the corresponding POP point of UCloud Global, and then completes the backhaul through the dedicated line.
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Backhaul in the same room: The public network is routed to the POP point in the same room, and then the backhaul is completed through UVER transmission.