Inter Provider VPN connectivity is often translated as
International VPN which are normally required by multinational enterprises. This
lab follows the second most scalable Inter-Provider L3 VPN Solution called “External
Multiprotocol BGP” method.
Gear Used:
GNS3 (Intel Core i3 3110M with 4 GB RAM)
Cisco C3640-JK9O3S-M, Version 12.4(16a), used for Provider &
Provider Edge Routers (PE-A, PE-B, CORE-A, CORE-B, ASBR-PE-A & ASBR-PE-B)
C2691-ADVENTERPRISEK9-M, Version 12.4(5a), used for Client
End Routers (CE-1, CE-2)
NOTE: Live IP Addresses & AS numbers used in this
lab are purely fictitious; any resemblance to any IP/AS living or dead is
purely coincidental.Network Diagram:
Scenario Detail:
We have 2 sites of a client CE-1 & CE-2 in need of VPN
connectivity between each other located at geographically distant locations.
Client couldn’t find a single ISPs presence at both locations. So, the VPN
circuit has to be established across two ISPs. What follows is the complete
configuration detail.
Configuration Files:
