E2122 Controller Overview
E2122 controller hardware is a campus controller that supports two thousand standalone devices,
sixteen thousand users, and four hundred switches. It provides availability for up to four thousand
devices, thirty two thousand users, and eight hundred switches, with any client distribution between
controllers.
E2122 back panel features
Figure 1: E2122 back panel layout
Callout
Description
1
Power supply module #1
2
Power supply module #2 bay for redundant power
supply (ordered separately)
3
Port 1 (Data Port 1) 1/10GbE, RJ45
4
Port 2 (Data Port 2) 1/10GbE, RJ45
5
VGA port (do not use)
6
RJ45 serial-A port
7
Admin, management port; 1GbE, RJ45
8
USB 2.0 or 3.0 ports
9
Not used
10
Port 3 (Data Port 3) 1/10 Gbps, SFP+
11
Port 4 (Data Port 4) 1/10 Gbps, SFP+
8
Extreme Campus Controller™
