... This is the case when more complex VPN designs are used, such as overlapping VPNs, Central Services VPN, Management VPN, Hub&Spoke topology. 24 MPLS VPN Design Guidelines Copyright 2000, ... Copyright 2000, Cisco Systems, Inc. MPLS VPN Design Guidelines 41 © 2000, Cisco Systems, Inc. www.cisco.com MPLS VPN Design Guidelines- 51MPLS VPN RoutingMPLS VPN Routing• Complex parts of the ... difference between overlay VPN convergence and MPLS /VPN convergence. n List the elements of end-to-end convergence in the MPLS /VPN network. n Optimize individual elements of MPLS /VPN convergence. Copyright...