The Catalyst® 8510 MSR/LightStream®1010 ATM Router Module (ARM) provides high-speed interworking between the Asynchronous Transfer Mode (ATM) and Layer 3 environment interfaces in a single chassis. The ARM is supported by the Catalyst 8510 MSR and LightStream 1010 platforms, providing large enterprises and service providers with a wide range of Layer 3 and ATM interfaces for building integrated solutions.
Catalyst 8510/LightStream 1010 ATM Router Module
The features and capabilities supported on the ARM are shown in Table 1. The LightStream 1010 requires the L1010-ASP-C-FCPFQ ATM switch processor to support the new Catalyst 8510/LightStream 1010 ARM.
Table 1: Feature Summary
|Integrated Layer 3 and ATM|
|Cisco Express Forwarding (CEF)|
|On-line Insertion and Removal|
The ARM is unique in that it allows Layer 3 traffic to pass seamlessly between ATM and Layer 3 interfaces. The benefit to the customer is that wire-speed Layer 3 switching between frame (Gigabit Ethernet/Fast Ethernet) ports, ATM switching between ATM ports, and high-speed frame/ATM interworking are combined in a single chassis. The result is fewer products in the network, simplified network designs, and a lower total cost of ownership.
ARM support of the Internet Engineering Task Force (IETF) specification Request for Comments (RFC) 1483, "Multiprotocol Encapsulation over ATM Adaptation Layer 5" on the 8510 MSR/LightStream 1010 includes:
The ATM Router Module features Cisco Express Forwarding (CEF), a new paradigm for route distribution and forwarding by distributing routing information from the central processor to the individual interface modules. Used within the Internet, this technology provides for scalability in large campus core networks. CEF provides Layer 3 forwarding based on a "shadow" of the routing table, resulting in very-high-speed routing table lookups and forwarding. This feature provides for wire-speed IP and IPX switching.
The Catalyst 8510/LightStream 1010 supports advanced technology that enables online insertion and removal (OIR) of the ARM module without powering-down the switch. When the module is removed or inserted while the switch is on and the system is operating:
The Catalyst 8510 MSR/LightStream 1010 provides support for IP and IPX® forwarding and routing. IP routing support includes Routing Information Protocol (RIP) Versions 1 and 2, Open Shortest Path First (OSPF), Interior Gateway Routing Protocol (IGRP) and Enhanced IGRP (EIGRP), and Border Gateway Protocol (BGP) Version 4. IPX routing support includes RIP and EIGRP.
Using RFC 1483, Layer 2 traffic can be bridged between ATM permanent virtual connections (PVCs). In addition, the Institute of Electrical and Electronic Engineers (IEEE) 802.1d Spanning-Tree Protocol is supported.
Integrated routing and bridging (IRB) provides a means to route a given protocol between routed and bridged interfaces. Bridged Virtual Interfaces (BVIs) configured with IRB can be used for routing a protocol between bridge groups.
The Catalyst 8510/LightStream 1010 supports both Internet Group Management Protocol (IGMP) and Cisco Group Management Protocol (CGMP) server to enable the deployment of scalable multicast networks. IGMP uses the IP transport that enables hosts to join a multicast group dynamically. IGMP queries joins and leaves (IGMPv.2) are supported. CGMP provides a way for Layer 2 switches to provide Layer 2 multicast control.
Hot Standby Router Protocol (HSRP) is designed to provide high network availability by routing IP traffic from hosts on Ethernet networks without relying on the availability of any single router. This feature is particularly useful for hosts that do not support a router discovery protocol such as Internet Control Message Protocol (ICMP) Router Discovery Protocol (IRDP) and do not have the functionality to switch to a new router when their selected router reloads or loses power. Without this functionality, a router that loses its default gateway because of a router failure is unable to communicate with the network.
Cisco Discovery Protocol (CDP) runs on all Cisco devices so that these devices can learn about neighboring devices and exchange information. CDP uses a well-known multicast Media Access Control (MAC) address. During system initialization, the application-specific integrated circuit (ASIC) will be configured to forward these packets to the Cisco IOS software CPU, which will process them.
The ATM Router Module is designed specifically to meet the demanding needs of large enterprise and service provider networks. One ATM Router Module may be placed in a Catalyst 8510 LightStream 1010 chassis, providing more than one Gbps of Layer 3 to ATM throughput in the core of an enterprise network.
Figure 1 High-Speed Enterprise Campus
At a service provider's point of presence, the ATM Router Module can be used to aggregate Layer 3 traffic on Gigabit Ethernet/Fast Ethernet ports and seamlessly interwork this traffic over an ATM backbone network.
Figure 2 Service Provider Point-of-Presence
- Occupies one slot in the Catalyst 8510 MSR/LightStream 1010 platform
- Maximum number of ARM modules supported in an 8510 MSR/LightStream 1010 chassis: 1
- The LightStream 1010 requires the L1010-ASP-C-FCPFQ ATM switch processor to run the Catalyst 8510 MSR/LightStream 1010 ATM Router Module
- Dimensions (H x W x D): 1.2 x 14.4 x 16.0 in. (3.0 x 36.6 x 40.6 cm)
Table 2: Required Software
|Platform||Features||Minimum IOS Software Image||Software Product Number|
|Catalyst 8510 MSR|
Table 3: Product Code and Availability