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CHAPTER24
Configuring ATM Router Module Interfaces
This chapter describes steps required to configure the ATM router module on the Catalyst 8540 MSR,
Catalyst 8510 MSR, and LightStream 1010 ATM switch routers, and the enhanced ATM router module
for the Catalyst 8540 MSR. The ATM router module allows you to integrate Layer 3 switching with
ATM switching on the same ATM switch router.
Note This chapter provides advanced configuration instructions for the Catalyst 8540 MSR,
Catalyst 8510 MSR, and L
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Chapter 24 Configuring ATM Router Module Interfaces Overview of the ATM Router Module Overview of the ATM Router Module The ATM router module allows you to integrate Layer 3 routing and ATM switching within a single chassis. When you install the ATM router module, you no longer need to choose either Layer 3 or ATM technology, as is frequently the case with enterprise, campus, and MAN applications. The ATM router module can perform one or more of the functions described in Figure 24-1. Figure 24-
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Chapter 24 Configuring ATM Router Module Interfaces Overview of the ATM Router Module Figure 24-2 ATM Router Module Traffic Flow (Catalyst 8540 MSR) Interface slot ATM cells NNI ATM interface module LANE signalling IPX packets/ FE or GE interface module Ethernet frames Interface slot Route processor Switch processor Switch processor Switch processor Route processor Interface slot Interface slot Interface slot ATM router module Interface slot Power supply 1 Power supply 2 Catalyst 8540 MSR Enhance
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Chapter 24 Configuring ATM Router Module Interfaces Overview of the ATM Router Module • IP fragmentation support. • IP 6-path load balancing support. • Supports OAM-based PVC management. • Supports Bridge Group Virtual Interface (BVI). • Supports integrated routing and bridging (IRB). Note The Catalyst 8540 MSR enhanced ATM router module does not support LANE clients. The ATM router module has no external interfaces. All traffic is sent and received through internal interfaces to the switching f
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Chapter 24 Configuring ATM Router Module Interfaces Hardware and Software Restrictions of the ATM Router Module Catalyst 8510 MSR and LightStream 1010 ATM Router Module Features The Catalyst 8510 MSR and LightStream 1010 ATM router module offers the following benefits: • Interoperates with all of the Layer 3 switching interface modules available for the Catalyst 8510 CSR chassis. For more information on the Catalyst 8510 CSR Layer 3 interface modules, refer to the ATM and Layer 3 Module Installa
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Chapter 24 Configuring ATM Router Module Interfaces Hardware and Software Restrictions of the ATM Router Module Catalyst 8540 MSR Enhanced ATM Router Module Software Restrictions The following software restrictions apply to the Catalyst 8540 MSR enhanced ATM router module: • LANE is not supported. • LANE Clients are not supported. • Use tag switching functionality with caution. Do not distribute routes learned through tag switching to Fast Ethernet (FE) or Gigabit Ethernet (GE), or vice versa. O
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Chapter 24 Configuring ATM Router Module Interfaces Hardware and Software Restrictions of the ATM Router Module Catalyst 8540 MSR ATM Router Module Software Restrictions The following software restrictions apply to the Catalyst 8540 MSR ATM router module: • Use tag switching functionality with caution. Do not distribute routes learned through tag switching to FE or GE, or vice versa. Otherwise, you might have unreachable route destinations. • The ATM router module does not initialize if it repla
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Chapter 24 Configuring ATM Router Module Interfaces Hardware and Software Restrictions of the ATM Router Module Catalyst 8540 MSR and LightStream 1010 ATM Router Module Software Restrictions The following software restrictions apply to the Catalyst 8540 MSR enhanced ATM router module: • Use tag switching functionality with caution. Do not distribute routes learned through tag switching to FE or GE, or vice versa. Otherwise, you might have unreachable route destinations. • The ATM router module d
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Chapter 24 Configuring ATM Router Module Interfaces Configuring ATM Router Module Interfaces • IP fragmentation. • IP 6-path load balancing. Note The ATM router module is only supported on ATM switches which have a multiservice ATM switch processor installed. Note The LightStream 1010 system software image does not include support for the ATM router module or Layer 3 features. You can download this image to a LightStream 1010 ATM switch router with a multiservice ATM switch processor installed.
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Chapter 24 Configuring ATM Router Module Interfaces Configuring ATM Router Module Interfaces Default ATM Router Module Interface Configuration Without Autoconfiguration If ILMI is disabled or if the connecting end node does not support ILMI, the following defaults are assigned to all ATM router module interfaces: • ATM interface type = UNI • UNI version = 3.0 • Maximum VCI bits = 11 • MTU size = 1500 bytes • ATM interface side = network • ATM UNI type = private Note Only Catalyst 8540 MSR enhanc
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Chapter 24 Configuring ATM Router Module Interfaces Configuring LECs on ATM Router Module Interfaces (Catalyst 8540 MSR) Configuring LECs on ATM Router Module Interfaces (Catalyst 8540 MSR) The procedures for configuring LANE clients (LECs) on the ATM router module are the same as for the configuration of LECs on the route processor, with one exception: To specify an ATM router module interface, rather than the route processor interface, use the interface atm card/subcard/port command. On the ro
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Chapter 24 Configuring ATM Router Module Interfaces Configuring LECs on ATM Router Module Interfaces (Catalyst 8540 MSR) Example The following example shows how to configure two LECs on an ATM router module interface: Switch# configure terminal Switch(config)# interface atm 1/0/0.4 multipoint Switch(config-subif)# ip address 40.0.0.1 255.0.0.0 Switch(config-subif)# lane client ethernet VLAN4 Switch(config-subif)# exit Switch(config)# interface atm 1/0/0.5 multipoint Switch(config-subif)# ip addr
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Chapter 24 Configuring ATM Router Module Interfaces Configuring LECs on ATM Router Module Interfaces (Catalyst 8540 MSR) Router 1 ATM Interface Router1# configure terminal Router1(config)# interface atm 2/0 Router1(config-if)# ip address 1.0.0.1 255.0.0.0 Router1(config-if)# atm pvc 1 0 5 qsaal Router1(config-if)# atm pvc 2 0 16 ilmi Router1(config-if)# lane client ethernet happy Router1(config-if)# end Router1# ATM Switch Router ATM Router Module Interface Switch# configure terminal Switch(conf
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Chapter 24 Configuring ATM Router Module Interfaces Configuring LECs on ATM Router Module Interfaces (Catalyst 8540 MSR) Router 1 ATM Interface Router1# configure terminal Router1(config)# interface atm 2/0 Router1(config-if)# ip address 1.0.0.1 255.0.0.0 Router1(config-if)# atm pvc 1 0 5 qsaal Router1(config-if)# atm pvc 2 0 16 ilmi Router1(config-if)# lane client ethernet happy Router1(config-if)# end Router1# ATM Switch Router ATM Router Module Interface Switch# configure terminal Switch(conf
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Chapter 24 Configuring ATM Router Module Interfaces Configuring LECs on ATM Router Module Interfaces (Catalyst 8540 MSR) LANE Bridging Between ATM and Ethernet The following example show how to configure LANE bridging between ATM and Ethernet using the ATM router module. Figure 24-5 shows an example of a network for LANE bridging between ATM and Ethernet. Figure 24-5 Example Network for LANE Bridging Between ATM and Ethernet Catalyst 8540 MSR Router 1 Router 2 GE 9/0/0 ATM 2/0 GE 9/0/0 ATM route
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Chapter 24 Configuring ATM Router Module Interfaces Configuring Multiprotocol Encapsulation over ATM Router 2 Ethernet Interface Router2# configure terminal Router2(config)# interface ethernet 9/0/0 Router2(config-if)# bridge-group 1 Router2(config-if)# end Router2# Router 2 Bridge Interface Router2# configure terminal Router2(config)# interface BVI1 Router2(config-if)# ip address 130.2.3.4 255.255.255.0 Router2(config-if)# exit Router2(config)# bridge 1 protocol ieee Router2(config)# bridge 1 r
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Chapter 24 Configuring ATM Router Module Interfaces Configuring Multiprotocol Encapsulation over ATM Note Traffic shaping and policing are not supported on the ATM router module interfaces; for traffic shaping and policing on ATM connections, use VP tunnels. For more information on VP tunnels, see Chapter 6, “Configuring Virtual Connections.” To configure multiprotocol encapsulation over ATM on the ATM router module interface, use the following commands, beginning in global configuration mode: C
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Chapter 24 Configuring ATM Router Module Interfaces Configuring Multiprotocol Encapsulation over ATM Multiprotocol Encapsulation over ATM Configuration Example The following example shows how to configure for multiprotocol encapsulation over ATM with two routers and a ATM switch router. The ATM switch router has an ATM router module in slot 0, a Fast Ethernet interface module in slot 1, and an ATM interface module in slot 3. One router has an ATM interface processor in slot 3. The other router h
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Chapter 24 Configuring ATM Router Module Interfaces Configuring Classical IP over ATM in a PVC Environment Ethernet Router RouterB# configure terminal RouterB(config)# ipx routing RouterB(config)# interface fastethernet 2/0 RouterB(config-if)# ip address 20.1.1.1 255.255.255.0 RouterB(config-if)# ipx network 2011 RouterB(config-if)# end RouterB# Configuring Classical IP over ATM in a PVC Environment This section describes how to configure classical IP over ATM, as described in RFC 1577, in a PVC
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Chapter 24 Configuring ATM Router Module Interfaces Configuring Classical IP over ATM in an SVC Environment For a detailed description of the role and operation of the ATM ARP server, refer to the Guide to ATM Technology. The ATM switch router can be configured as an ATM ARP client, thereby being able to work with any ATM ARP server conforming to RFC 1577. Alternatively, one of the ATM switch routers in a logical IP subnet (LIS) can be configured to act as the ATM ARP server itself. In that case
