Enterasys Networks C2K122-24 - Manual (Page 23)

Connectivity
SecureStack C2 Installation Guide 1-3
High-Speed Stack Connections
The switch has rear‐panel connectors for high‐speed connections in a stack configuration.
The high‐speed stacking cables used for the connections are optional items and must be
ordered separately. There are two types of cables:
• C2CAB‐SHORT cables to connect two adjacent switches in the stack, and
• C2CAB‐LONG cable to connect from the top switch to the bottom switch in the stack.
This cable can also be used in place of the C2CAB‐SHORT cable to connect switches
that are too far apart due to the physical arrangement of the switches in the stack.
Redundant Power Supply Capability
The switch has redundant power supply capability when connected to an optional
external redundant power supply (RPS). If the internal power supply fails, the RPS
assumes the entire load of the switch without interrupting network traffic. The internal
power supply and RPS each have their own AC power connection, which enables the
connection of each power supply to a different AC power circuit for additional AC power
source redundancy.
Connectivity
You can connect this switch to Gigabit Ethernet networks or workstations by way of the
1000BASE‐T compliant fixed‐front panel RJ45 connectors and also use two uplink ports
that support optional 10‐Gigabit fiber‐optic XFP transceivers for high‐speed uplinks to
your network backbone.
At the time of this printing, three versions of the XFP transceivers that are available from
Enterasys are described in
Table 1‐1 on page 1‐3. These XFPs meet or exceed the IEEE
802.3ae 10‐Gigabit standard. For fiber optic and operating range specifications, refer to
“ Supported XFP Transceiver Interface Options” on page A‐3 .
Table 1-1 Description of XFPs
XFP Function
10GBASE-SR-XFP Provides one 10GBASE-L Ethernet compliant LC fiber-optic multimode port
with a standard LC connector.
10GBASE-LR-XFP Provides one 10GBASE-LR Ethernet compliant LC fiber-optic single-mode
port with a standard LC connector.
10GBASE-ER-XFP Provides one 10GBASE-ER Ethernet compliant LC fiber-optic single-mode
port with a standard LC connector.