Chassis Overview

Two models are available:

Both models use the same software and share a system architecture and common components:

E320 Model

A fully configured E320 router consists of 2 switch route processors (SRPs), 3 switch fabric modules (SFMs), 12 line modules, and up to 2 I/O adapters (IOAs) per line module. See Figure 1 and Figure 2.

An IOA shelf (bracket) can be installed on a slot-by-slot basis to create an upper IOA bay and lower IOA bay, enabling you to use up to two IOAs in the same slot. This architecture enables you to combine different IOA types in the same slot and to support oversubscribed configurations.

Note: The routers illustrated in this book might look different than your router due to configuration variations.

Figure 1: E320 Router, Front View

E320 Router, Front View

Figure 2: E320 Router, Rear View

E320 Router, Rear View

E120 Model

A fully configured E120 router consists of 2 switch route processors (SRPs), 3 switch fabric modules (SFMs), 6 line modules, and up to 2 I/O adapters (IOAs) per line module. See Figure 3 and Figure 4.

An IOA shelf (bracket) can be installed on a slot-by-slot basis to create a left and right IOA bay, enabling you to use up to two IOAs in the same slot. This architecture enables you to combine different IOA types in the same slot and to support oversubscribed configurations. Air is pulled in from the right of the router by the fan tray and is exhausted out the left side.

Note: The routers illustrated in this book might look different than your router due to configuration variations.

Figure 3: E120 Router, Front View

E120 Router, Front View

Figure 4: E120 Router, Rear View

E120 Router, Rear View