Cisco Systems 1721 用户手册
1-5
Cisco 1721 Router Hardware Installation Guide
78-13834-02
Chapter 1 Cisco 1721 Router Overview
Front Panel LEDs
Use the back panel LEDs during router installation to confirm that you have
correctly connected all the cables to the router.
correctly connected all the cables to the router.
Front Panel LEDs
Use the router front panel LEDs to determine network activity and status on the
Ethernet port and on the WIC ports. The front panel LEDs are illustrated in
Ethernet port and on the WIC ports. The front panel LEDs are illustrated in
and described in
.
WIC slot 0
(WIC0)
(WIC0)
No label
Supports one Cisco WIC. For detailed information, refer
to the Cisco WAN Interface Cards Hardware Installation
Guide, which comes with every card.
to the Cisco WAN Interface Cards Hardware Installation
Guide, which comes with every card.
WIC slot 1
(WIC1)
(WIC1)
No label
Supports one Cisco WIC. For detailed information, refer
to the Cisco WAN Interface Cards Hardware Installation
Guide, which comes with every card.
to the Cisco WAN Interface Cards Hardware Installation
Guide, which comes with every card.
Table 1-2
Back Panel Connectors (continued)
Connector/Slot
Label/Color
Description
Table 1-3
Back Panel LEDs
LED Label
Color
Description
WIC0 OK
Green
On when a WIC is correctly inserted in the card slot.
FDX
Green
On solid—Ethernet port is operating in full-duplex mode.
Off—Ethernet port is operating in half-duplex mode.
100
Green
On solid—Ethernet port is operating at 100 Mbps.
Off—Ethernet port is operating at 10 Mbps.
LINK
Green
On when the Ethernet link is up.
MOD OK
Green
On when the VPN hardware encryption module is installed and
recognized by the IOS.
recognized by the IOS.
WIC1 OK
Green
On when a WIC is correctly inserted in the card slot.