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DES-7200 Configuration Guide Chapter 8 VRF
Configuration
8-8
PE-connecting logical interface of
MCE device (SVI 40)
VPNa 10.10.40.1
MCE-connecting logical interface
of PE device (SVI 40)
VPNa 10.10.40.2
VPNb-connecting interface of
MCE device (SVI 20)
VPNb 10.10.20.3
PE-connecting logical interface of
MCE device (SVI 50)
VPNb 10.10.50.1
MCE-connecting logical interface
of PE device (SVI 50)
VPNb 10.10.50.2
VPNc-connecting interface of
MCE device (SVI 30)
VPNc 10.10.30.3
PE-connecting logical interface of
MCE device (SVI 60)
VPNc 10.10.60.1
MCE-connecting logical interface
of PE device (SVI 60)
VPNc 10.10.60.2
Configure the mutual routing between MCE, VPN sites and PE device
The VRF instances on MCE correspond to the VRF instances on PE. The routing
protocol configured between MCE and PE will advertise VPN routes to PE, which
will further advertise such routes to other PEs on the network, thus ensuring the
intercommunication between remote VPN sites.
Note
In this example, the VRF instances on MCE use the same routing protocol to
exchange routes with VPN sites and PE.
If the VRF instances on MCE uses different routing protocols to exchange
routes with VPN sites and PE, in order to advertise the routes of VPN sites to
the VRF instances on PE and allow the routes advertised by PE to the VRF
instances on MCE to be advertised to VPN sites, the routing protocol used by
VRF instances on MCE shall redistribute routes to each other, so that VPN
routes can be fully exchanged.
Configuration Steps
1) Configure VRF instances and associate with the corresponding interfaces on
MCE and PE device
Create VRF instance on MCE device
Step 1: Create VRF instances named VPNa, VPNb and VPNc on MCE
MCE(config)#ip vrf vpna
MCE(config-vrf)#exit
MCE(config)#ip vrf vpnb