Ip Vpn Lite Deployment Scenarios - Avaya 8800 Planning And Engineering

MPLS IP VPN and IP VPN Lite
• BGP route reflection
• peering to multiple route reflectors
• route reflection server (NNI side)
• full mesh and hub and spoke designs
• extended community Type 0 and 1
• import and export route targets and route distinguishers
• IP-BGP extensions
• IEEE 802.3ad/MLT
• Split MultiLink Trunking (SMLT) and Routed Split MultiLink Trunking (RSMLT) for CE
connectivity
• ECMP
• VRF-based ping and traceroute
• UNI packet classification (port, VLAN, IP, VRF, and VPN)
• VRF UNI routing protocols (RIP, OSPF, eBGP)
An IP VPN-Lite PE device provides four functions:
• an IGP protocol, such as OSPF, across the core network to connect remote PE devices
• VRFs to provide traffic separation
• MP-BGP to exchange VPN routes and service IP addresses with remote PE devices
• the forwarding plane to encapsulate the customer IP packet into the revise IP header

IP VPN Lite deployment scenarios

The following sections describe how you can use the IP VPN Lite capability on the Avaya
Ethernet Routing Switch 8800/8600 to design a sample network interconnecting five separate
sites while meeting the following requirements:
• 10 gigabit connectivity between sites (over dark fiber or DWDM circuits)
• capability of Layer 2 VPN connectivity between any number of sites
• capability of Layer 3 VPN connectivity between any number of sites
• VPN scalability to scale up to ~100 Layer 2 VPNs and ~100 Layer 3 VPNs
• two main sites to provide Internet connectivity to every other site
• ability to provide Internet connectivity to each Layer 3 VPN while not allowing any
connectivity between Layer 3 VPNs (no overlapping address space between different
VPNs)
• resilient design with subsecond failover times (No Spanning Tree)
• low latency, high bandwidth, nonblocking design where all traffic is hardware switched
228 Planning and Engineering — Network Design November 2010