R211x-HP Flexfabric 11900 MPLS Configuration Guide

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Figure 82 Network diagram for the MCE function

As shown in Figure 82, the MCE device creates a routing table for each VPN. VLAN interface 2 binds to

VPN 1 and VLAN-interface 3 binds to VPN 2. When receiving a route, the MCE device determines the

source of the routing information according to the number of the receiving interface, and then adds it to

the corresponding routing table. The MCE connects to PE 1 through a trunk link that permits packets

tagged with VLAN 2 or VLAN 3. PE 1 determines the VPN that a received packet belongs to according

to the VLAN tag of the packet, and sends the packet through the corresponding tunnel.

You can configure static routes, RIP, OSPF, IS-IS, EBGP, or IBGP between an MCE and a VPN site and

between an MCE and a PE.

NOTE:

To implement dynamic IP assi

nment for DHCP clients in private networks, you can confi

ure DHCP server

or DHCP relay agent on the MCE. When the MCE functions as the DHCP server, the IP addresses assi

ned

to different private networks cannot overlap.

MCE configuration task list

Tasks at a

lance

Configuring VPN instances:

1. (Required.) Creating a VPN instance

2. (R

equired.) Associating a VPN instance with an interface

3. (Optional.) Configuring route related attributes for a VPN instance

Configuring routing on an MCE:

• (Required.) Configuring routing between an MCE and a VPN site

• (Required.) Configuring routing between an MCE and a PE