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Cisco 1760 Modular Access Router Hardware Installation Guide
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Chapter1 Cisco 1760 Router Overview
Ports and LEDs
System LEDs
The system LEDs, described in Table 1 -3, confirm the presence of power to the
router, basic router functionality, and the presence of packet voice data modules
(PVDMs) and Virtual Private Network (VPN) modules.
Ethernet LEDs
The Ethernet LEDs show network activity and status on the Ethernet port. These
LEDs are described in Tabl e 1-4.
Tab le 1-3 Sy st em LE Ds
LED Label Color Description
PWR Green On when DC power is being supplied to the router.
OK Green On when the router has successfully booted up and the
software is functional. This LED blinks during the
power-on self-test (POST).
See Table 3 -1 in the “Troubleshooting” chapter for
how to use this LED in router diagnostics.
PVDM 0 OK Green On when a packet voice data module (PVDM) is
correctly inserted in PVDM card slot 0.
PVDM 1 OK Green On when a packet voice data module (PVDM) is
correctly inserted in PVDM card slot 1.
MOD OK Green On when a VPN module is present.
Table1-4 Ethernet LEDs
LED Label Color Description
ACT Green Blinks when there is network activity on the Ethernet
port.
COL Yellow Blinks when there are packet collisions on the local
Ethernet network.
FDX Green On—Ethernet port is operating in full-duplex mode.
Off—Ethernet port is operating in half-duplex mode.