1-9
Cisco 850 Series and Cisco 870 Series Access Routers Hardware Installation Guide
OL-5331-01
Chapter 1 Product Overview
Hardware Features
Hardware Features
This section provides an overview of the hardware features of Cisco 850 series and Cisco 870 series
routers and includes the following topics:
•
Serial Number Location
•
LED Indicators on the Routers
•
Integrated 802.11b/g Radio Module (Wireless Models Only)
•
Supported Cisco Radio Antennas (Wireless Models Only)
•
External Power-over-Ethernet Module (Optional)
•
Router Memory
•
Router Hardware Security
Serial Number Location
The serial number label for the router is located on the rear of the chassis, at the left edge (see
Figure 1-11
).
Figure 1-11
Serial Number Location
LED Indicators on the Routers
The router LEDs that indicate status or activity on the router are located on the front panel of the routers.
Table 1-2
lists and describes the LEDs.
120729, 78-16262-01 Re
v A0
G.SHDSL
ISDN S/T
LAN
FE0
FE1
FE2
FE3
Cisco 878
CONSOLE
AUX
RESET
+5,+9 V
DC
SN: AAANNN
NXXXX
SN: AAANNNNXXXX
Table 1-2
LED Indicators on the Routers
LED
Color
Description
Router Model
OK
Green
On when DC power is being supplied to the router. The light blinks
if an error occurs during bootup.
All Cisco 850
series and
Cisco 870
series
WAN LNK
Green
On if the WAN Ethernet carrier detects status and connects to the
digital subscriber line access multiplexer (DSLAM).
Cisco 851,
Cisco 871
WAN RXD
Green
Blinks when WAN DSL or WAN Internet receives data.
Cisco 851,
Cisco 871
