Installation guide

Configuring I/O Modules
Extreme Networks Consolidated "e" and "i" Series Hardware Installation Guide 291
NOTE
The ATM module is a Class 1 laser device.
The default configuration of the A3cSi and A3cMi modules is as follows. Ports 1 and 3:
• Are added to the default VLAN as untagged.
• Inherit the properties of the default VLAN (VLANid and so forth).
For specifications of the A3cSi optical interface, see Table 133 on page 367.
Physical Description
The ATM module (Figure 163) has the following key components:
• Two high-performance network processors
• A GPP subsystem
The network processors are programmable devices that participate with the Extreme “i” chipset to
support expanded functionality, features, and flexibility.
The GPP subsystem handles system control and I/O module management functions. The GPP
subsystem resides outside of the I/O module data path to optimize performance.
Figure 171: Components and LEDs of the ATM module
ATM_002
Ejector/injector
handle
Network interface ports
Four on OC-3 ATM module
Port status LED
(one per port)
Service ports
Module status LED
General Purpose Processor (GPP)
Module diagnostics LED
Captive
retaining screw
Network processors
and heat sinks