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NE20E-S V800R010C10SPC500 Feature Description - VPN 01

This is NE20E-S V800R010C10SPC500 Feature Description - VPN
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Application of MCEs on a Data Center Network

Application of MCEs on a Data Center Network

Networking Description

As shown in Figure 7-47, a data center network consists of the following layers:
  • Gateway layer: provides high-speed forwarding for inbound and outbound data of the data center.

  • Core layer: provides high-speed forwarding for data from the aggregation layer.

  • Aggregation layer: provides functions such as gateway redundancy for servers, load balancing, and firewall.

  • Access layer: provides high-density network interfaces for data center servers.

Figure 7-47 Networking diagram for a data center

VPN services are becoming increasingly refined, and the demand for VPN service security is growing. Carriers must isolate different types of VPN services on data center networks to meet this demand, by configuring devices at the core layer to function as MCEs. The interfaces of an MCE can be bound to different VPNs based on service types, so that the MCE can create and maintain an independent routing and forwarding table for each VPN to completely isolate VPN services.

Feature Deployment

The MCE function is configured on the data center network shown in Figure 7-47 as follows:
  1. Different VPN instances are configured for different VPN services on core-layer devices.

  2. Each interface of a core-layer device is bound to the corresponding VPN instance.

  3. Gateway-layer devices that function as PEs are configured to connect to core-layer devices. The interfaces of gateway-layer devices connecting to core-layer devices are bound to the corresponding VPN instances.

  4. A routing protocol is configured on devices at the gateway and core layers for these devices to communicate.

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Updated: 2019-01-03

Document ID: EDOC1100055135

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