9032947 Installation 19
•Memory
Memory tests on the CPU RAM are performed after the serial port
test. No results are displayed on the console.
After these two tests are performed, the operati onal software of the switch
is loaded. A series of more extensive diagno stic tests are then con ducted
during which the Test LED remains lit. The results of the tests are
displayed on the terminal. If all tests pass, the Test LED turns off. When
all tests are complete, the system is functional and the user interface is
ready to receive commands at the console.
Network Cable Requirements

Copper

Table 2-1 specifies the cable types and length constra ints for the variou s
copper interfaces o n t he ELS100-24TXG.
Table 2-1. Copper Cable Specifications

Fiber

Table 2-2 specifies the fiber types, bandwidth requirements, and length
constraints for the various Gigabit Ethernet fiber interfaces on the
ELS100-24TXG. The type of GBIC module in s talled determines th e
interface type. The GBIC, along with the type of fibe r installed, d etermines
the distance support.
Table 2-2. Gigabit Ethernet Fiber Specifications
Interface Type Cable Requirement Maximum Length
10Base-T Category 3 or 5 Unshielded Twisted
Pair (UTP) 100m (328 ft.)
100Base-TX Category 5 UTP 100m (328 ft.)
1000Base-CX 150 ohm, shielded balanced 25m (82 ft.)
Interface
Type Fiber Type Fiber
Diameter
(microns)
Modal
Bandwidth
(MHz * km)
Maximum
Length (m)
1000Base-SX multi-mode 62.5 160 220
multi-mode 62.5 200 275
multi-mode 50 400 500
multi-mode 50 500 550
1000Base-LX multi-mode 62.5 500 550
multi-mode 50 400 550
multi-mode 50 500 550
single-mode 9 N/A 5000