The NetVanta 1335 Multiservice Access Router is a performance-enhanced platform that addresses the need of multiple networking devices in a single compact platform. The NetVanta 1335 integrates a modular IP access router, 802.11a/b/g Wireless Access Point (WAP) 24-port Layer 3 Power over Ethernet (PoE) switch, firewall, VPN appliance, and DSU/CSU, all in one platform. In addition, the NetVanta 1335, injected with RapidRoute technology, delivers enhancedperformance necessary for IP telephony, corporate connectivity and Internet access, even with advanced services enabled. The NetVanta 1335 is a modular, 1U-high, rackmountable metal chassis that offers a single-slot to house any of the NetVanta Series of Network Interface Modules (NIMs) and Dial backup Interface Module (DIMs). The NetVanta 1335 also includes Gigabit SFP/1000Base-T Ethernet interface(s) for uplink or stacking capabilities and a fully managed, non-blocking, 24-port, Layer 3 switch. Based on the ADTRAN Operating System (AOS), the NetVanta 1335 allows for the support of standards-based switching and routing functions. Switching features include 802.1Q VLANs, Storm Control, 802.1D and 802.1w Spanning/Rapid Spanning Tree, Link Aggregation, Port Mirroring, GVRP, and Link Layer Discovery Protocol (LLDP) to auto-discover neighboring Ethernet devices. For IP routing it enables fast, accurate network convergence using routing protocols such as BGP, OSPF, RIP, static and default routes, and demand routing. The NetVanta 1335 supports QoS to prioritize mission-critical traffic and control network congestion at various layers of the OSI model. On the LAN, the NetVanta 1335 offers 802.1p and DiffServ Class of Service (CoS). To assign priority to traffic, Weighted Round Robin and Strict Priority Queuing is used with four egress queues per port. For the WAN, DiffServ marking, Low Latency Queuing, Weighted Fair Queuing (WFQ), and Class-based WFQ provide priority for IP packets routed over the WAN. Together these features offer a powerful end-to-end QoS story. In combination with the QoS features, a specialized SIP Application Layer Gateway (ALG) allows SIP traffic to traverse NAT enabled firewalls. For corporate networks, this interoperability allows IP PBXs, phones and other SIP-based devices to set up, tear down and pass voice and call control messages seamlessly through the integral NAT-enabled firewall. The Wi-Fi version of the NetVanta 1335 concurrently provides an 802.11b/g and 802.11a radio support at speed up to 54Mbps. Standard wireless security features apply, with advanced business-class needs, including multiple SSIDs, disabled SSID broadcasts, 802.1x for user-based authentication, WPA and WPA2 pre-shared keys, with TKIP and AES encryption. The NetVanta 1335 with Wi-Fi also employs Virtual Access Points (VAPs), the equivalent of wireless Virtual LANS (VLANs). VAPs allow customers to securely segment their wireless network like that of their wired network. The NetVanta 1335 provides a powerful, high-performance stateful inspection firewall to stop intruders and common Denial of Service (DoS) attacks. In addition, a variety of data security features including MAC-based port security, SSH and SSL for encrypted user login, and user authentication using TACACS+, RADIUS or RSA SecurID. For data integrity and added security, the NetVanta 1335 supports 500 IPSec VPN tunnels using DES, 3DES or AES encryption.