Avaya 8800 Planning And Engineering, Network Design page 246

MPLS IP VPN and IP VPN Lite
Figure 121: IP VPN Lite
IP VPN-Lite can therefore easily be deployed on any enterprise existing IP routed network and
automatically leverage the existing backbone architecture in terms of load balancing and subsecond
failover resiliency. While MPLS struggles to achieve these goals and only does so by bringing in
exponential complexity, Avaya IP VPN-Lite can simply leverage these capabilities from either a pure
IP OSPF routed core where ECMP is enabled or a network core designed with Avaya SMLT/RSMLT
clustering.
Furthermore, PEs can be just as easily deployed with SMLT clustering towards the CE edge devices
thus delivering a very attractive clustered PE solution. This is easily achievable whether the CE is a
L2 device (using SMLT Clustering) or an L3 device (where the SMLT cluster needs to be RSMLT
enabled).
Figure 122: IP VPN Lite with SMLT
Overall, IP VPN-Lite provides support for the following:
• 256 VPNs per each system
• filtering support (UNI side)
• overlapping addresses
• MP-BGP extensions
• BGP route refresh
June 2016 Planning and Engineering — Network Design
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