Cisco Systems 1800 quick start Interface Numbering, Verify the Hardware Configuration

Table 3	LED Indicators (continued)
LED		Color	Description	Location
CF		Green	On when compact flash memory is busy. Do not remove CompactFlash memory card	Back
			when this light is on.
FDX (FE 0)		Green	On indicates full-duplex operation. Off indicates half-duplex operation.	Back
100 (FE 0)		Green	On indicates a 100-Mbps link. Off indicates a 10-Mbps link.	Back
Link (FE 0)		Green	On when the router is correctly connected to a local Ethernet LAN through Ethernet	Back
			port 0.
FDX (FE 1)		Green	On indicates full-duplex operation. Off indicates half-duplex operation.	Back
100 (FE 1)		Green	On indicates a 100-Mbps link. Off indicates a 10-Mbps link.	Back
Link (FE 1)		Green	On when the router is correctly connected to a local Ethernet LAN through Ethernet	Back
			port 1.
AIM		Green	On indicates presence of an AIM in the internal AIM slot.	Back

Verify the Hardware Configuration

Verify the router hardware configuration by entering the following commands:

•show version—Displays the system hardware version; the installed software version; the names and sources of configuration files; the boot images; and the amount of installed DRAM, NVRAM, and flash memory.

•show diag—Lists and displays diagnostic information about the installed controllers, interface processors, and port adapters. Typical examples are network modules, interface cards (WICs, VWICs, HWICs) and advanced integration modules (AIMs).

7Interface Numbering

Each individual interface (port) on a Cisco 1841 router is identified by a number. A Cisco 1841 router contains the following wide-area network (WAN) and local-area network (LAN) interface types:

•Two onboard Fast Ethernet LAN interfaces

•Two slots in which you can install WICs, VWICs (data only), and HWICs

The numbering format for the slots is interface-type0/slot-number/port-number. Table 4 summarizes the interface numbering.

Table 4	Interface Numbering
Slot Number		Slot Type	Slot Numbering Range	Example1
Onboard Ports		Fast Ethernet	0/0 and 0/1	interface fastethernet 0/0
Slot 0		HWIC/WIC/VWIC2	0/0/0 to 0/0/3	interface serial 0/0/0
				line async 0/0/0
Slot 1		HWIC/WIC/VWIC2	0/1/0 to 0/1/3	interface serial 0/1/0
				line async 0/1/0

1.The interfaces listed are examples only; other possible interface types are not listed.

2.VWICs are data-only in Cisco 1841 routers.

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