Cisco Ex SERIES Manuale Utente Scaricare il pdf (Pagina 20)

Juniper Networks/Cisco Systems Switch Interoperability Cookbook

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run one unique virtual routing and forwarding (VRF) instance for each customer; this

allows customers to maintain unique, and possibly overlapping, routing tables (for

example, with multiple customers each using the same RFC 1918 private address space).

The CE devices run OSPF.

This table lists the IP networks in use in the customer and service provider networks.

With L3 VPNs, the customer’s equipment has no visibility into the service provider

network. Instead, all traffic appears to be routed between customer networks using BGP

and OSPF.

Customer!networks!

Service!provider!networks!

192.18.1.0/24,!192.18.18.0/24,!

192.18.40.0/24,!192.18.68.0/24,!

192.18.69.0/24,!192.18.98.0/24,!

192.18.99.0/24!

192.18.38.0/24,!192.38.70.0/24!

Figure 5 shows the L3 VPN validation test bed.

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Cisco Ex SERIES Manuale Utente Pagina 20