3Com S27x, S26x installation manual Cabling the PathBuilder S24x, 26x, and 27x Switch, Lan

Cabling the PathBuilder S24x, 26x, and 27x Switch

Cabling the PathBuilder S24x, 26x, and 27x Switch

Introduction This section describes the connections for:

•Control Terminal Port (CTP)

•I/O Interface cards

•Network Manager

•LAN

•An external power source

CTP Connection The CTP is set as Port 6 on the rear of the PathBuilder S24x, 26x, and 27x switch. It is a fixed EIA 232-D DCE interface terminating on a DB-25 connector. No special cabling is required. Typically, a straight-through DB-25 male to DB-25 male cable is required for connection to a terminal device.

I/O Interface Port Three of the I/O ports on the backplane of the PathBuilder S24x, 26x, and 27x switch

Connectionchassis are DB-25 female connectors. One of the I/O ports is a DB-15 female connector. You do not need additional cables if the DIM-based ports (Ports 1 and 2) have EIA 232-D DIMs installed.

Network Manager The PathBuilder S24x, 26x, and 27x switch supports direct manager connection

Connectionusing the CTP. There is a serial interface connection for the SNMP manager. You can attach the control terminal to any asynchronous PAD port.

LAN Connection You can connect a PathBuilder S24x, 26x, and 27x switch to a LAN with a router. The router can be either an external router connected to a PathBuilder S24x, 26x, and 27x switch using a Frame Relay connection or a PathBuilder S200 series switch internal router. For more LAN connection information, refer to Appendix A, Appendix.

Procedure	Follow these steps to connect to an external power source:
	Step	Action	Result/Description
	1	Verify that the 115/230 VAC Switch on	Be sure that the AC power
		the rear panel is set for the specific	cord meets requirements for
		country’s requirements.	the country of use.
	2	If you are using an AC power supply,	The PathBuilder S24x, 26x,
		connect the power cord to the back of	and 27x switch unit automati-
		the PathBuilder S24x, 26x, and 27x	cally powers on and runs self-
		switch enclosure and then to the	diagnostics.
		appropriate power source.
		If you are using a -48VDC input power
		supply, verify correct polarity with a
		Volt meter.

3-22 PathBuilder S24x, 26x, and 27x Switch Hardware Installation