We have a small test setup using a Cisco uBR7246VXR running in all-in-one configuration mode, and am trying to check the Cisco combo modem/router model DPC2325. Testing them works fine if they are set as bridges, but not as routers. Everything works OK up to coming online, but the modems always get stuck on init(i). Anyone know of a simple change to our simple internal config file that will enable testing these units as routers? We are trying to keep using the config file function that this CMTS can provide, but can use an external file if necessary. Thanks in advance.
I'm having some issues with some really bad upstream noise on a CATV plant. I'm looking for ideas/direction to go to fix this thing. It is not a constant thing, it comes and goes. Watching a graph of the SNR on the CMTS, sometimes there is a sharp drop, and other times it is a gradual decline. SNR is typically around 36, and goes down into the low 20s when this happens, and when it's really bad, drops most all the modems on the system. It seems to be correlated with cold weather, but this may just be a coincidence.
I have a network were existing Internet is provided by a Cisco DOCSIS v1.0 CMTS owned by a different service provider.
Now I want to move all customers to my new CMTS DOCSIS v3.0
I have it configured for different channels than existing CMTS. My modems are allowed access by MAC.
What happens when I connect it to the network ? Will existing modems move to new CMTS (They will not be allowed access) ?
The other service provider is using DOCSIS v3.0 modems, and only allowed modems (MAC address) is allowed access to their network.
My problem occurs when using Cisco EPC2203 & Thomson THG541 cable modems.
If these modems dial out and the connection establish, we send an INVITE after 900 s (this is our softswitch's session timer). The modem answers an OK, and for that it receives an ACK. After this the modem sends 4 or 5 five OK in a row, and for last a BYE.
Can You please tell us how is it possible? How can we fix this, so the call can continue?
I've setup 0/2 for management with 10.0.0.2. Bundle 1 has 10.0.0.3. DHCP server has 10.0.0.1.
I can ping 10.0.0.1 from uBR. I can ping 10.0.0.2 and 10.0.0.3 from DHCP server. DHCP server gets request from 10.0.0.3 with giaddr of 10.0.0.3 and sends a response, but the modem say it never recieved a response.
I work in the computer security industry, as many of you know, keeping a intruder out of a network is not easy. Keeping up with patching all devices on a network is also difficult. This does not include risk from unknown / zero day vulnerabilities. To have a better security position, security admins are looking for ways to better block outgoing network traffic in addition to using firewalls to block incoming traffic.
Blocking outgoing blacklisted IP addresses would be ideal, but for starters I wonder if there is a way to see the outgoing packets from the cable modem.
We just purchased a ubr7246 to replace a C3 and can't seem to figure out how to bridge the cable interfaces (4xMC28U) with GiabitEthernet0/1 (Internet.) I would like to put the provisioning server on GigabitEthernet0/2 with an IP of 10.0.0.1/24. Customers will have a public IP on 50.206.3.x/24.
This configuration seemed so much easier on the C3.
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