Cisco 1721 - Manual (Page 42)

Chapter 2 Installation
Optional Installation Steps
2-10
Cisco 1721 Router Hardware Installation Guide
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• OK (front panel)—On when the router software is loaded and functional.
Blinking means that the router is performing a power-on self-test (POST).
• WIC0/WIC1 OK (back panel)—On when a WIC is correctly installed in the
corresponding WIC slot.
• ETH ACT (front panel)—Blinking when there is network traffic on the local
10/100 Ethernet LAN.
• WIC0ACT or WIC1 ACT (front panel)—Varies, depending on the WIC
installed. Refer to
Table 1-4 in Chapter 1, “Cisco 1721 Router Overview.”
• LINK (back panel)—On when the router is correctly connected to the local
Ethernet LAN through the 10/100 ETHERNET port.
• MOD OK (back panel)—On when the VPN hardware encryption module is
installed and recognized by the IOS.
Optional Installation Steps
This section describes some installation steps that you might or might not use,
depending on your site and on how you are configuring the router. This section
describes the following procedures:
• Connecting a PC
• Connecting a Modem
• Wall-Mounting
• Stacking the Router
• Unstacking the Router
Connecting a PC
If you want to configure the router by using the Cisco IOS command-line
interface, you must connect the router console port to a terminal or PC. The cable
and adapter required for this connection are included with the router.