Platform Considerations

You can configure unchannelized SONET/SDH interfaces on the following E Series Broadband Services Routers:

This section describes the line modules and I/O modules that support SONET/SDH interfaces.

For detailed information about the modules that support SONET/SDH interfaces on ERX14xx models, ERX7xx models, and the ERX310 router:

For detailed information about the modules that support SONET/SDH interfaces on the E120 and E320 routers:

OCx/STMx/DS3-ATM Line Modules

OCx/STMx/DS3-ATM line modules pair with OC3-4 I/O modules to deliver unchannelized OC3/STM1 ATM operation through four line interfaces.

OCx/STMx/DS3-ATM line modules pair with OC12 I/O modules to deliver unchannelized OC12/STM4 ATM operation through one line interface.

I/O modules that support single-mode (intermediate reach or long haul) or multimode operation through SC full duplex connectors are available. I/O modules that support SONET Automatic Protect Switching (APS) 1+1 redundancy and SDH Multiplex Section Protection (MSP) are also available.

Figure 5 shows the interface stack for OCx/STMx/DS3-ATM interfaces.

Figure 5: Interface Stack for OCx/STMx/DS3-ATM Interfaces

Interface Stack for OCx/STMx/DS3-ATM
Interfaces

Note: For a detailed description of interface types and specifiers, see Interface Types and Specifiers in JunosE Command Reference Guide. For information about interfaces, see Planning Your Network in JunosE System Basics Configuration Guide.

OCx/STMx POS Line Modules

OCx/STMx POS line modules pair with OC3-4 I/O modules to deliver unchannelized OC3/STM1 POS operation through four line interfaces.

OCx/STMx POS line modules pair with OC12 I/O modules to deliver unchannelized OC12/STM4 POS operation through one line interface.

I/O modules that support single-mode (intermediate reach or long haul), or multimode operation through SC full duplex connectors are available. I/O modules that support APS/MSP are also available.

Figure 6 shows the interface stack for OCx/STMx POS interfaces.

Figure 6: Interface Stack for OCx/STMx POS and OC48/STM16 Interfaces

Interface Stack for OCx/STMx POS and
OC48/STM16 Interfaces

OC48 Line Modules

OC48 line modules pair with OC48 FRAME I/O modules to deliver unchannelized OC48/STM16 POS operation through one line interface.

The OC48 I/O module supports single-mode (intermediate reach or long haul) operation through an SC full duplex connector.

The interface stack for the OC48/STM16 interfaces is the same as that for OCx/STMx POS interfaces (Figure 6).

The OC48 line module can be installed in the router’s turbo slots, numbered 2 and 4. When the OC48 line module is installed in a turbo slot, it spans slots 2–3 and 4–5. The bandwidth of slot 3 or slot 5 is used for a line module in slot 2 or slot 4 if that line module requires the turbo slot.

Note: If a line module is installed in slot 3 or slot 5, and the line module in slot 2 or 4 requires bandwidth, the system configures the line module it detects first. The state of the other line module is displayed in the show version command output as disabled (cfg error).

OC3/STM1 GE/FE Line Module

The OC3/STM1 GE/FE line module pairs with the OC3-2 GE APS I/O module to deliver unchannelized OC3/STM1 ATM operation through two line interfaces and Gigabit Ethernet operation through one line interface.

The OC3-2 GE APS I/O module uses a range of small form-factor pluggable transceivers (SFPs) to support different optical modes and cabling distances, and accepts up to three LC-style fiber-optic connectors. You can configure ports 0 and 1 for OC3/STM1 ATM interfaces; port 2 is reserved for a Gigabit Ethernet interface.

The interface stack for OC3/STM1 ATM interfaces on the OC3-2 GE APS I/O module is the same as for OCx/STMx/DS3-ATM interfaces. (See Figure 5.)

For more information about configuring a Gigabit Ethernet interface on this I/O module, see OC3-2 GE APS I/O Modules Overview.

Note: The OC3-2 GE APS I/O module does not support APS in the current release.

ES2 4G Line Module

The E120 and E320 routers support the ES2 4G LM. Other E Series routers do not support the ES2 4G LM. For more information about modules on the E120 and E320 routers, see the E120 and E320 Module Guide.

The ES2 4G LM supports IOAs that support single-mode operation (intermediate reach or long haul). IOAs are available in a halfheight size, which enables you to configure them in either of the two IOA bays that are available for each slot. For more information about installing IOAs, see the E120 and E320 Hardware Guide.

In the current release, the ES2 4G LM pairs with IOAs to provide OCx/STMx ATM, OCx/STMx POS, Gigabit Ethernet, 10-Gigabit Ethernet, and tunnelservice interfaces.

Note: For more information about configuring a Gigabit Ethernet interface or 10-Gigabit Ethernet interface, see Configuring Ethernet Interfaces.

For more information about configuring a tunnel-service interface by using the Tunnel Server IOA, see Managing Tunnel-Service and IPsec-Service Interfaces.

E120 Router Configuration

The 120 Gbps switch fabric of the E120 router allocates 10 Gbps of overall bandwidth to each line module slot. The line interface on the ES2 4G LM when installed in a 120 Gbps fabric configuration is 3.9 Gbps; you can achieve this rate with random packet sizes from 64–1518 bytes or a mixture of packet sizes that represent Internet mix traffic (IMIX).

E320 Router Configuration

The 100 Gbps switch fabric of the E320 router allocates 3.4 Gbps of overall bandwidth to each regular line module slot and 10 Gbps of overall bandwidth to each of the turbo slots (slots 2 and 4). The line interface on the ES2 4G LM when installed in a 100 Gbps fabric configuration is 3.4 Gbps; you can achieve this rate with packet sizes greater than 128 bytes.

The 320 Gbps switch fabric of the E320 router allocates 10 Gbps of overall bandwidth to each line module slot. The line interface on the ES2 4G LM when installed in a 320 Gbps fabric configuration is 3.9 Gbps; you can achieve this rate with random packet sizes from 64–1518 bytes or a mixture of packet sizes that represent Internet mix traffic (IMIX).

OCx/STMx ATM IOAs

The ES2 4G LM pairs with the ES2-S1 OC3-8 STM1 ATM IOA to deliver unchannelized OC3/STM1 ATM operation through eight line interfaces. You can install the ES2-S1 OC3-8 STM1 ATM IOA in both IOA bays.

The ES2 4G LM also pairs with the ES2-S1 OC12-2 STM4 ATM IOA to deliver unchannelized OC12/STM4 ATM operation through two line interfaces. You can install the ES2-S1 OC12-2 STM4 ATM IOA in both IOA bays.

The interface stack for both of these IOAs is the same as for OCx/STMx/DS3-ATM interfaces. (See Figure 5.)

OCx/STMx POS IOAs

The ES2 4G LM pairs with the ES2-S1 OC12-2 STM4 POS IOA to deliver unchannelized OC12/STM4 POS operation through two line interfaces. You can install the ES2-S1 OC12-2 STM4 POS IOA in both IOA bays.

The ES2 4G LM also pairs with the ES2-S1 OC48 STM16 POS IOA to deliver unchannelized OC48/STM16 POS operation through one line interface. In the current release, you can install the ES2-S1 OC48 STM16 POS IOA in only one of the IOA bays per slot.

Figure 7 shows the interface stack for OCx/STMx POS interfaces on the ES2 4G LM.

Figure 7: Interface Stack for OCx/STMx POS Interfaces

Interface Stack for OCx/STMx POS Interfaces

Numbering Scheme

When configuring or managing an interface, you must know the numbering scheme for identifying an interface. The numbering scheme depends on the type of E Series router that you have.

ERX7xx Models, ERX14xx Models, and the ERX310 Router

Use the slot/port format to identify unchannelized SONET/SDH interfaces. Interfaces that support APS/MSP also use the APS/MSP channel number.

See Configuring Channelized T3 Interfaces, for information about slot numbering.

For information about installing line modules and I/O modules in ERX routers, see the Installing Modules chapter in the ERX Hardware Guide.

E120 and E320 Routers

Use the slot/adapter/port format to identify unchannelized SONET/SDH interfaces.

Note: The E120 and E320 routers do not support path channelization.

 

For information about installing line modules and IOAs in the E120 and E320 routers, see the Installing Modules chapter in the E120 and E320 Hardware Guide.

Interface Specifier

The configuration examples in this chapter use the format for ERX7xx models, ERX14xx models, and the ERX310 router to specify a SONET/SDH interface. (The format is described in Numbering Scheme.)

For example, the following command specifies a SONET/SDH interface on port 0 of an I/O module in slot 0.

host1(config)#controller sonet 4/0

When you configure a SONET/SDH interface on an E120 or an E320 router, you must include the adapter identifier as part of the interface specifier. For example, the following command specifies a SONET/SDH interface on port 0 of the IOA installed in the lower adapter bay (0) of slot 3.

host1(config)#controller sonet 3/0/0

For more information about interface types and specifiers on E Series models, see Interface Types and Specifiers in JunosE Command Reference Guide.

Exchanging Modules

If you replace an OC3 I/O module with an OCx/STMx line module and a corresponding OC3-4 I/O module or vice versa, you must erase the configuration of the existing modules. See slot accept in JunosE System Basics Configuration Guide.

On the E120 and E320 routers, if you replace an ES2-S1 OC3-8 STM1 ATM IOA with an ES2-S1 OC12 STM4 POS IOA, you must erase the configuration of the existing IOA. See adapter accept or slot accept in chapter Managing Modules JunosE System Basics Configuration Guide.