E120 and E320 Modules

The routers support SRP modules, SFM modules, line modules, and IOAs. You can use a line module for access or uplink. Access line modules receive traffic from low-speed circuits, and the system routes the traffic onto higher-speed uplink line modules and then to the core of the network. Line modules act as frame forwarding engines for the physical interfaces (the IOAs) via a passive midplane.

Most line modules, IOAs, SFMs, and SRP modules can be installed in either router. There are a few exceptions, however:

• Similar-capacity modules must be used in the same router. For example, you cannot install an SRP-100 in a router that contains an SFM-320. You can only use a SRP–100 module with a SFM-100 module.
• Higher-capacity SRP modules can be used in lower-capacity routers, but lower-capacity SRP modules cannot be used in high-capacity routers. For example, an SRP-320 can be used in an E120 router, but an SRP-120 cannot be used in an E320 router.
• The SRP-100 module and the SFM-100 module are not supported in the E120 router.

See the E120 and E320 Module Guide for module and chassis compatibility.

The front panel of each module contains a collection of status LEDs (light-emitting diodes). For information about how to interpret the LEDs, see Troubleshooting. For complete module specifications, see the E120 and E320 Module Guide.

Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice.