©2010 Avaya, Inc. All rights reserved. Highlights  High-performance resiliency  Pioneering Switch Cluster high-availability solution  2nd largest Core installed-base  1st & only to break through the Terabit Stackable boundary  Refreshed Edge, Core, Data Center Portfolio Ethernet Switching 1 Core Stackable Chassis Access Modular Chassis ERS 8800 ERS 8300 ERS 5000 ERS 4500 ERS 2500 VSP9000 VSP7000

©2010 Avaya, Inc. All rights reserved. Avaya Stackable Ethernet Switching ERS5500/5600 Ideal for:  Large enterprises as a gigabit edge switch  Small to medium enterprises as a core switch  Data center using horizontal stacking  Server aggregation or wiring closet  Advanced functionality such as: ECMP, VRRP, Switch Clustering (SMLT) and multicast routing. ERS4500 Ideal for:  Medium to large enterprises looking for a scalable & flexible edge switching solution  Customers requiring either FE &/or GE with flexible uplink speeds from 100FX to 10Gigabit  Advanced security & L3 for edge deployments ERS2500 Ideal for:  Small enterprises or branch office deployments  Cost-conscious convergence deployments  Only Fast Ethernet connectivity is required ERS 2500 ERS 4500 ERS 5500 ERS 5600 All Stackable’s include stack cable and rackmounts

©2010 Avaya, Inc. All rights reserved. Avaya offers a complete end to end portfolio of stackable and modular switches that are high performing, 4- 7X more resilient and have a 3-5X lower TCO than competing products ERS 8300 Price / Performance Functionality Stackable Modular ERS 4500 Mid tier switch with models for small to medium enterprises ERS 2500 Low cost solution for branch offices ERS 5000 Premium stackable switch – Excellent cost effective alternate core Network core and edge switch for mid size enterprise campuses ERS 8600 High performance switch for large enterprises and data centers VSP9000 Next gen switch for large enterprises and data centers Summary: Ethernet Switches Only vendor to provide multiple options to enable IPVPN Best in class resiliency mode Uses up to 40% less energy than Cisco Highly successful in Tier 1 Enterprise – Loyal global customers Highest capacity of 27Tbps with mid- plane architecture Uninterrupted Services Architecture – Zero loss forwarding onSF failure Growth protection with high density 10GIG & 40/100GIG ready 24-port 10GE – up to 720 ports/rack 48-port 1G SFP – up to 1,440 ports/rack 48-port 10/100/1000 – up to 1,440 ports/rack Source: Avaya reporting, Company website, Tolly group reports VSP9000