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Cisco DPC3825

Last Updated: Thu, 21 May 2015 > Related Articles

97 rated this

Summary

View the available ports and an explanation of the status lights on a Cisco DPC3825 WiFi modem.

Solution



The Cisco DPC3825 is a DOCSIS 3.0 device.
 

Back View 


Back view


The Cisco DPC3825 has the following ports available on the back.

  • POWER - Connects the gateway to the power adapter
  • USB - Connects to selected client devices
  • ETHERNET - Four ports connect to the Ethernet port on your computer or home network
  • WIRELESS SETUP - Initiates wireless setup - allows the user to add new Wireless Protected Setup (WPS) compliant wireless clients to the home network
  • RESET - Used to reset the gateway

Modem Lights 


Modem lights


The lights indicate the current connection status. To troubleshoot any connection problems, use the table below.

LightStatusProblemSolution
POWEROnNoneN/A
BlinkingNot connected to the InternetTurn off all network devices, including the gateway and computers. Then turn on each device in the following order:
  1. Gateway
  2. Computer
Check the cable connections. The computer should be connected to one of the ports numbered 1-4 on the gateway.
OffNo powerVerify power supply connections and electrical outlet. Also make sure the outlet is not connected to a switch.
DSOnNoneN/A
AmberNone - narrowband operationN/A
GreenNone - bonded channel operationN/A
USOnNoneN/A
AmberNone - narrowband operationN/A
GreenNone - bonded channel operationN/A
ONLINEOnNone - gateway registered on the network and operationalN/A
ETHERNET
1 - 4
OnNone - gateway successfully connected to a device through that port

N/A

BlinkingNone - network activity over that portN/A
OffNo devices are connectedVerify Ethernet cable connections, the TCP/IP settings and the NIC. NIC drivers may need to be reinstalled. If these steps do not resolve the issue, contact Customer Support.
USBOnNone - connection made through the USB portN/A
BlinkingNone - network activity over the USB portN/A
OffNo devices are connectedVerify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
WIRELESS LINKOnNone - wireless access point enabledN/A
BlinkingNone - gateway actively sending or receiving data over the networkN/A
OffNone wireless access point disabled by the userN/A
WIRELESS SETUP (WPS)OffNone - wireless setup not activeN/A
BlinkingNone - wireless setup active to add new wireless clients on the wireless networkN/A

Mac Address  

The Cisco DPC3825 comes configured with wireless security. By default, the Cisco home networking gateway supports up to 802.11n wireless standards and uses WPA / WPA2 wireless security settings. The SSID and Passphrase are printed on the label on the gateway.

  • The SSID on the gateway is either the last 6 characters of the CM MAC Address or the SSID identified on the label.
  • The Passphrase is the same as the 9-digit serial number of the Cisco home networking gateway.

MAC label


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