ATM Router Modules

This chapter describes the ATM router modules that are supported in the following ATM systems:

• Catalyst 8540 MSR
  
  
• Catalyst 8510 MSR
  
  
• LightStream 1010
  
  

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Note   The LightStream 1010 system software image does not include support for the ATM router module or Layer 3 features. You can download the Catalyst 8510 MSR image to a LightStream 1010 ATM switch router with ASP-C and FC-PFQ installed.

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This chapter includes the following sections:

• About ATM Router Modules
  
  
• ATM Connections Supported
  
  
• ATM Router Module LEDs
  
  

About ATM Router Modules

The ATM router modules provide the Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 with high-speed internetworking between the Layer 2 and Layer 3 network topologies. When the ATM router module is installed, you no longer need to choose either Layer 3 or ATM technology, as is frequently the case with enterprise and metropolitan area applications. You can have both Layer 3 and ATM technologies in the same multiservice ATM switch router (MSR) chassis.

The Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 equipped with ATM router module functionality provide Ethernet-ATM and ATM-ATM bridging and routing. You can combine ATM and Layer 3 port adapters and interface modules in a Catalyst 8540 MSR chassis equipped with the ATM router module. The Catalyst 8510 MSR can use Catalyst 8510 CSR interface modules.

The ATM router module offers interoperability between the interface modules used in the Catalyst 8540 CSR and the port adapters and interface modules used in the Catalyst 8540 MSR. The ATM router modules also offers interoperability between the Layer 3 switching interface modules used in the Catalyst 8510 CSR and the ATM port adapters used in the Catalyst 8510 MSR chassis.

The ATM router module cannot operate with feature card per-class queuing (FC-PCQ) on the processor card. FC-PCQ and FC-PFQ are two types of daughter cards for the processor card. FC-PCQ provides a subset of the ATM Forum traffic management features provided by FC-PFQ.

Note   For information on how to configure the Layer 3 modules that interoperate with the ATM router module in the Catalyst 8540 MSR chassis, refer to the Layer 3 Software Feature and Configuration Guide.

The Catalyst 8540 MSR supports two ATM router modules. The modules are available with either 64 KB or 256 KB of memory and both have two internal interfaces across the backplane. The Catalyst 8510 MSR and LightStream 1010 ATM router module has one internal interface across the backplane. Each interface provides switching at 1 Gbps between Layer 2 and Layer 3 in the ATM switch router.

Note   The Catalyst 8540 MSR needs a minimum of 256-MB DRAM to support the enhanced ATM router module.

Figure 16-1 shows the full-width ATM router modules that occupy the entire slot in the ATM switch router. (See Table 16-1 for ATM router module slot placements.)

Figure 16-1: ATM Router Module

Note   The ATM router module is hot-swappable. When hot swapping an ATM router module, wait 1 minute after removing the module before installing a new module.

ATM Connections Supported

You can use the ATM router modules for high-speed enterprise campus and metropolitan-area networks. The Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 chassis equipped with the ATM router modules are an ideal solution where an ATM infrastructure already exists or where ATM is the desired backbone solution. The ATM router modules perform Gigabit Ethernet and ATM internetworking seamlessly on a single platform. You can use the ATM router modules in campuses that are migrating from ATM to Gigabit Ethernet. The ATM router modules allow you to use Gigabit Ethernet for wiring closet uplinks in an existing ATM backbone.

The Catalyst 8540 MSR, Catalyst 8510 MSR, and LightStream 1010 chassis equipped with the ATM router module are used either as a core or an edge device in an ATM network. Figure 16-2 shows a sample network with a Catalyst 8540 MSR.

Figure 16-2: Catalyst 8540 MSR Using the ATM Router Module as a Core and an Edge Device

ATM Router Module LEDs

The status LED provides information for the internal interfaces on the ATM router module. The LEDs are shown in Figure 16-3 and described in Table 16-2.

Figure 16-3: ATM Router Module LED