Cisco 877W Hardware Installation Guide - Page 23

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 120729, 78-16262-01 Rev A0 SN: AAANNNNXXXX LAN FE0 FE1 FE2 FE3 Cisco 878 ISDN S/T G.SHDSL RESET CONSOLE AUX +5,+9 VDC SN: AAANNNNXXXX 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. Table 1-2 LED Indicators on the Routers LED OK WAN LNK WAN RXD Color Green Green Green Description Router Model 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 On if the WAN Ethernet carrier detects status and connects to the Cisco 851, digital subscriber line access multiplexer (DSLAM). Cisco 871 Blinks when WAN DSL or WAN Internet receives data. Cisco 851, Cisco 871 OL-5331-01 Cisco 850 Series and Cisco 870 Series Access Routers Hardware Installation Guide 1-9