Connecting to the Network
3-8 Installation
Figure 3-5 2E253-49R Rear View
2. Observe the LANVIEW LEDs. After a successful boot, the PWR LED turns ON (green). If the
PWR LED is amber, there is no power redundancy. Check the power cord connections and the
power source. If there are no problems with the power cord connections or power source and
the PWR LED is still amber, contact Cabletron Systems. Refer to Section 1.2 for details.
3.4 CONNECTING TO THE NETWORKThis section provides the procedures for connecting unshielded twisted pair (UTP) segments from
the network or other devices to the 2E253-49R.
When facing the front panel of a 2E253-49R, the bottom left RJ21 is the connector for 10BASE-T
ports 1 through 12; bottom right, ports 13 through 24; top left, ports 25 through 36; and top right,
ports 37 through 48. All 48 ports have internal crossovers.
NOTE If the 2E253-49R is being installed in a network using SmartTrunking, there are rules
concerning the network cable and port configurations that must be followed for
SmartTrunking to operate properly. Bef ore connecting the cables, refer to the Cabletron
Systems
SmartTrunk User’s Guide
for the configuration information.
Primary
Redundant
26001-06