Cisco Systems 1900 Series manual Interface Numbering, Baud Reset Button

Chapter 1 Overview of the Router

Interface Numbering

The wireless access point does not have an external console port for connections. To configure the wireless device, you must use a console cable to connect a PC to the host router’s console port as described in Chapter 3, “Cable Information and Specifications for Cisco 1900 Series Routers,” and then use the Cisco IOS command-line interface (CLI) to access the interface.

Table 1-5describes the radios and antennas for the Cisco 1900 series wireless routers.

The 5-GHz radio incorporates an Unlicensed National Information Infrastructure (UNII) radio transceiver operating in the UNII 1, 2, 3, 5-GHz frequency bands.

Table 1-5	Wireless Device Radios and Antennas
			Radio	Maximum Data
Radio Module		Platform	Band	Throughput1	Mode	Antenna
Dual-band		Cisco 1900	2.4 GHz	100 Mb/s per	Autonomous	Three dual-band
802.11a/b/g/n		series	and 5	radio, up to 200	and unified	removable
radio module		wireless	GHz	Mb/s total		2.4-GHz/5-GHz
		routers				omnidirectional
						dipole RP-TNC
						antennas 2

1.Actual data rate is highly dependent on your wireless environment.

2.The antennas require some minor installation. They must be screwed onto the RP-TNC antenna connectors on the I/O side of the chassis. See the following document on Cisco.com for feature information: http://www.cisco.com/en/US/docs/routers/access/wireless/hardware/notes/antdip.html

Baud Reset Button

The Cisco 1905 and Cisco 1921 ISRs have a baud reset button on the back panel. When the button is pressed during power on, ROMMON resets the router to the default console port configuration. If the baud reset button is pressed for longer than 30 seconds, the router defaults to the read-only ROMMON image. The default console port configuration is 9600 baud, 8 data bits, 1 stop bit, no parity, and flow control is set to none.

Interface Numbering

Each individual interface (port) on a Cisco 1900 series router is identified by a number. The Cisco 1900 series routers contains the following wide-area network (WAN) and local-area network (LAN) interface types:

•Two onboard Gigabit Ethernet (GE) LAN interfaces.

•Two slots in which you can install WICs, VWICs (data only), and HWICs. The Cisco 1905 comes with a factory installed EHWIC in the right slot.

The numbering format for the slots is interface-type 0/slot-number/interface-number.Table 1-6summarizes the interface numbering. See Figure 1-5to identify the slot numbers.

Table 1-6 Interface Numbering

	Slot Number	Slot Type	Slot Numbering Range
	Onboard Ports	10/100/1000 Ethernet	0/0 and 0/1
			Cisco 1900 Series Hardware Installation
OL-19084-02				1-13