Cisco Systems 520 manual Admin button, Uplink ports, Ports

Chapter 1 Introduction

Hardware Features

8	ADMIN LED	The ADMIN LED shows the management mode in which the switch is operating.
		Off (dark)	Switch is configured with an IP address.
		Blinking green	Switch is in the initial setup mode, or the switch is in direct
			managed mode. For information about this mode, see the
			“Device Manager Is Not Accessible Through the Network”
			section on page 7-4.
9	ADMIN button	The ADMIN button is used to manage the switch through a direct connection to
		your PC or laptop and is used to start the recovery on the switch.
10	Uplink ports	Depending on the Catalyst Express 520 model, the uplink ports can be
		dual-purpose ports or 10/100/1000 ports. For information about 10/100/1000
		ports, see Downlink ports.
		The dual-purpose port can be used as either a 10/100/1000 port or as an SFP
		module port. However, both cannot be active at the same time. If both ports are
		connected, the SFP module port has priority. You cannot change this priority
		setting.
		The SFP module slot supports Gigabit Ethernet SFP modules to establish
		fiber-optic and 1000BASE-T uplink connections. It supports the modules listed
		in the “Supported Hardware” section on page 1-14.

11Downlink Depending on the Catalyst Express 520 model, the downlink ports can be 10/100

ports	PoE ports, 10/100 ports, or 10/100/1000 ports.
	You can set these ports for speed and duplex autonegotiation, in compliance with
	IEEE 802.3ab, to optimize port bandwidth.
	If the connected device also supports autonegotiation, the switch port negotiates
	the best connection (the fastest line speed that both devices support and
	full-duplex transmission if the attached device supports it) and configures itself
	accordingly. The default setting is autonegotiate.
	The ports also have the automatic-medium-dependent interface crossover
	(auto-MDIX) capability to automatically detect the required cable connection
	type (straight-through or crossover) and to configure the connection
	appropriately.

	User Guide for the Catalyst Express 520 Switches
1-8	OL-12761-02