Acadia ATM OC12 Media Module

The Asynchronous Transfer Mode (ATM) module is designed for networks that link critical Ethernet clients and servers through an ATM backbone. It has the industry-leading capability to map critical Ethernet traffic into ATM Quality of Service (QoS), enabling you to preserve data priorities throughout your LAN and WAN infrastructure.

Because the module can map Ethernet traffic into ATM QoS, it ensures that all your priority data — including routing updates, voice, video, file backups, and Web access — can be assigned the correct priority and that those priorities are maintained throughout your entire network infrastructure. The Series II ATM module does not require the deployment of more costly closet routers to accomplish this; it allows your network to develop based on both Layer 2 and Layer 3 QoS information. Network managers have the ability to choose the best way to manage and roll out QoS within your organization.

The ATM module is available in dual port OC-12c/STM-4c and OC-3c/STM- configurations. Both modules allow wire-speed switching and routing in hardware. Load sharing through non-transit Private Network–Network Interface (PNNI) and over bridged permanent virtual circuits (PVCs) support an aggregated bandwidth of up to 1.2 Gbps — without sacrificing resiliency.

Key Benefits
• Protection for high-priority routing updates and voice and video traffic through ATM and Ethernet networks
• Best-in-class Fast and Gigabit Ethernet aggregation into an ATM network through wire-speed switching and routing
• High performance without sacrificing security through wire-speed access control list (ACL) processing
• Resiliency through load-balancing and failover for PVCs and LAN Emulation Clients (LECs)
• Interoperability with RFC 1483 bridged and routed PVCs and User–Network Interface (UNI) 3.0/3.1/4.0 with both LAN Emulation (LANE) 1.0 and 2.0 support — all at no additional charge
• Manageable through LEC Management Information Base (MIB), RFC 1483 MIB, and MIB II

Resiliency
The ATM module is hot-swappable, so it can be replaced while the switch remains in operation. PNNI enables traffic to be rerouted should one link on the module fail. During normal operation, both ATM ports are active and forward traffic at a combined throughput of 1.2 Gbps. When a failure occurs, all traffic is rerouted through the available port.

Load sharing for bridged PVCs allows balancing of traffic between both ports. If a link fails, all traffic is sent over the active link across the backup PVC. QoS contracts are honored for both PNNI and PVC failover. Spanning Tree per virtual LAN (VLAN) can be used for link-level redundancy in LANE.

Layer 3 Features
• Internet Protocol (IP) v4, Internetwork Packet Exchange (IPX), and AppleTalk routing
• IP routing protocols: – Open Shortest Path First (OSPF) v2 – Routing Information Protocol (RIP) v1/v2
• 16,000 routes
• 24,000 Address Resolution Protocol (ARP) table entries
• IP multicast routing:
    • Distance Vector Multicast Routing Protocol (DVMRP)
    • Internet Group Management Protocol (IGMP) v2
    • IGMP v2 snooping
    • Cisco Group Management Protocol (CGMP)
• IP resiliency:
    • Virtual Router Redundancy Protocol (VRRP)
    • Internet Control Message Protocol (ICMP) router discovery
• IP filters: 512 ACLs; actions: prioritize, drop, and forward
• Differentiated Services (DiffServ)

ATM Hardware
• 4 modules per chassis are supported
• Hot-swappable
• 60-watt power draw
• Consumes 1 slot in Acadia chassis
• 8 hardware queues

ATM Software
• UNI 3.0/3.1/4.0
• Emulated LAN (ELAN) to VLAN mapping
• PNNI 1.0
• QoS to class of service (CoS) mapping
• Interim Local Management Interface (ILMI) 4.0
• LEC v1/v2 (CBR, VBR, UBR)
• Failover (LANE and PVCs)
• PVCs
• Load balancing for bridged PVCs
• Traffic shaping

Network Management Software
• Network management software
• Web-based network management interface
• SNMP v3
• Lightweight Directory Access Protocol (LDAP) client
• Telnet
• RS-232 and 10Base-T in-band
• Mini-RMON
• Port mirroring
• Remote Authentication Dial-In User Service (RADIUS) Client
• MIB support:
    • LEC MIB
    • RFC 1483 MIB
    • MIB II