Yep that should work. Reply. 2. Want to learn more about the tool that can help you troubleshoot and check the health of your devices? This setting is only configurable on the DPC3941B. ASK YOUR QUESTION in the "CLI Analyzer AMA", DPC3941T disconnects when bridge mode is enabled. 1. Click HERE to get help with a password reset! Replace. The Cisco DPC3941B Comcast Gateway is a Business Wireless Gateway often given to Comcast Business customers for their Internet service. She enabled the bridge and showed me how to turn off the WiFi without having to do anything to the bridge. Basically, data coming into the network is sent out to all devices on the network. However, Comcast gave him a Cisco DPC3941B gateway which is fine with the exception of Port Forwarding. I see most have wireless ability, so I presume I can leave the DPC3941T in bridge mode and use wireless, when desired, from the router. When I enable the bridge mode, the cable modem disconnects, and internet is lost, as well as connection to the unit, so that I cannot access it and change the bridge settings, for example. I will research those routers and get one. Xfinity.com • customerCentral • User Guide ... Home > Screenshots > Cisco > DPC3941B … Sign up to try out various use cases with the Cisco SD-WAN Cloud O... Start Comcast bridge mode doesn't function correctly 100% of the time. NOTE: The login address and credentials below are the default when the Gateway is shipped and can be modified by your Network Administrator. Cisco DPC3825 Upgrade -Basic Setup and Bridge Mode (Cable Modem Mode) I had a bit of confusion with the initial setup, and couldn't find a definitive source for a solution so thought I'ld post one. DPC3941 by Cisco information and hardware knowledge base. So here's my dilemma, I work in a support role at a hosted voip(sip) provider and as of late I've had a ridiculous amount of customers reporting a whole slew of issues related to double NAT. Don't need live help? If the default credentials are not being accepted, speak with the Network Administrator who set up the network. Start learning how your business can take everything to the next level. I called Comcast to have them remotely enable the bridge, and this is where I got lucky. Shop backup batteries for telephone modems including Arris back up batteries and batteries for Cisco DPC3941t, DPC3939, DPC3212 + Comcast phone modems & more. August 28, 2020 at 1:29 am. Have a look at the CVR100W Wireless-N VPN Router, or the RV215W/RV130W/RV340W routers. I'm looking for a complete manual on the DPC3941T router.. And you have full Internet connectivity without another router being connected ? The issue is that you can't setup static addresses in bypass mode the same way on the brain damaged Linksys/Cisco device as on the somewhat less brain damaged Verizon device. Cisco DNA Center - Release Notes The only solution we have seen is to either replace the router and gamble on a new Comcast router that maybe has fewer issues or, better yet, to place the router in 'bridge mode' and add your own router. when you put the ISP modem in bridge mode, it basically becomes a layer 2, transparent device, and you indeed need a router connected to the ISP modem in bridge mode to get connectivity. I get it 50/50 on the networks I set these modems to bridge mode into. Multicasting: When a call comes into a Call Group and simultaneously rings all phones, the Internet traffic of the internal network spikes. The question is: why would you want to put your modem in bridge mode? The published PDF "Cisco Model DPC3941T DOCSIS 3.0 24x4 Wireless Residential Voice Gateway User Guide" shows the basic installation/hookup and Gateway configuration of the Wireless SSIDs and password keys.. the wireless component can be easily switched off and on through the GUI. In bridged mode, the ACE bridges traffic between two VLANs in the same IP subnet. The ideal network involves your Internet Service Provider (ISP) connecting onsite to a standalone modem that connects to a router, preferably a router recommended by Nextiva. Announcements The NAT feature may be disabled by default and will need to be enabled, and DNS servers need to be configured to a dependable set of DNS servers (Nextiva recommends Google DNS). When the SIP packet goes into the router, it is given another private IP address. ROUTER CONFIG Router is set to defaults/factory settings except for what Comcast did to set up the static IP address, etc. Missing is information about the function and configuration of other left tab topics(and sub-tabs): I just need to be able to turn off the wireless function on the router. 2. Comcast "either you get your static ip or true bridge mode, but not both" - HELP!!! Design I recently signed up with Xfinity and received a DPC3941T cable modem. Enter the following credentials to log in: Reboot the router and any devices connected to the router. This range covers the IP addresses from 208.73.144.0 – 208.73.151.255, and 208.89.108.0 – 208.89.111.255. I set it to bridge mode after the installer did all his testing and left and the two wifi networks were still enabled. Learn They are: SIP ALG:  Nextiva uses port 5062 to bypass SIP ALG, however, having this disabled is always recommended. I've read that (and Comcast has said that) we need to keep the DPC3941B cable modem hardware and NOT put it in bridge mode in order to retain our static IP. Since all phones are likely using port 5062, the data spike causes packets to be dropped. 1. While there are limited options that can temporarily alleviate some of the above symptoms, for a permanent solution, this Gateway will need to be put into “Bridge Mode” and connected to a recommended firewall or router to provide quality audio. Cisco DNA Center System Scale Essentially - when I try to set up port forwarding, I only have a … SIP ALG inspects and modifies SIP traffic in unexpected ways causing one-way audio, deregistrations, random error messages when dialing and calls going to voicemail for no reason. Double NAT: When routing SIP Packets, the packet will come into the modem, and be directed to a private IP address (the router). Even in DMZ/bridge mode issues remain. After setting up a static ip address on your devices you need to login to your r… As a Network Administrator, log into the Cisco DPC3939B/3941B Gateway by opening a web browser on a device connected directly to the Gateway and going to. DNS Server Configuration: If the DNS server being used is not up to date and consistent, devices (Poly phones in particular) can become deregistered. Hence all addresses issued by router 2. Cisco SD-Access 2.1.2.x New Features Comcast seems to not care about the bridged network as much. I recently signed up with Xfinity and received a DPC3941T cable modem. There are five main areas that you should be concerned with regarding your network. This ensures that your ports will remain open even after your device reboots. I also have my gateway in bridge mode and it seems like this firmware no longer disables the wireless network when placed in bridge mode. I … Without multicasting enabled, you can have what’s called “port collisions”.   Our team is ready to answer any questions you may have. This can cause failed transfers, dead air upon call retrieval, among other issues. VPN University says. This equipment, by itself, is not recommended for use with VoIP service. 64/128 bits WEP WPS Setup WPA-PSK WPA2-PSK WLAN time schedule 2.4ghz antenna config I need an ethernet router. For the Comcast setup it took a bit more effort: This modem will not give IP addresses to devices which are not running Windows (such as Ipads, Iphones, Tablets, etc); the modem recognizes the devices but will not give them IP addresses so … May still be issues with SIP NAT ALG (enabled by default). Recommended - Our free program will setup a static IP address for you. The modem is in bridge mode with the WiFi disabled. WARNING: Gateway operating in bridge mode! A bridge group virtual interface (BVI) joins the two VLANs into one bridge group. I prefer wireless usage. Voting Now Open We have a Cisco modem/router model DPC3941B provided to us by Comcast. Mesh (192.168.5.#) left in Bridge mode (hence DHCP disabled). is there a button or switch on them to make it fast and easy to do? Do these routers allow you to turn off the wireless component? If you have more devices on your network than ports on your router, you can connect a switch to your router to expand the number of ports. Is it true that I need a router inline with the cable modem to use the device in bridge mode? When I enable the bridge mode, the cable modem disconnects, and internet is lost, as well as connection to the unit, so that I cannot access it and change the bridge settings, for example. So, my experience is that putting a Comcast Business Internet DPC3941B in bridge mode DOES NOT disable any of the wifi.   We are very excited with the number of amazing independent technology bloggers, vloggers and podcasters who chose to participate in the 2020 IT Blog Awards, hosted by Cisco. 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