H3C Technologies H3C S6800 Series Switches - Manual (Page 445)

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Figure 109 Network diagram for the MCE function
As shown in Figure 109 , the MCE exchanges private routes with VPN sites and PE 1, and adds the private
routes to the routing tables of corresponding VPN instances.
• Route exchange between MCE and VPN site—Create VPN instances VPN 1 and VPN 2 on the
MCE. Bind VLAN-interface 2 to VPN 1, and VLAN-interface 3 to VPN 2. The MCE adds a received
route to the routing table of the VPN instance that is bound to the receiving VLAN interface.
• Route exchange between MCE and PE—The MCE connects to PE 1 through a trunk link that permits
VLAN 2 and VLAN 3. On PE 1, create VPN instances VPN 1 and VPN 2. Bind VLAN-interface 2
to VPN 1, and VLAN-interface 3 to VPN 2. The MCE and PE add a received route to the routing
table of the VPN instance that is bound to the receiving VLAN interface.
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 assignment for DHCP clients in private networks, you can configure DHCP server
or DHCP relay agent on the MCE. When the MCE functions as the DHCP server, the IP addresses assigned
to different private networks cannot overlap.
MCE configuration task list
Tasks at a glance
Configuring VPN instances :
1. (Required.) Creating a VPN instance
2. (Required.) 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
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