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RBR 750 dropping internet after lease expires, every 2-ish hours
I have an RBR750 (and two satellites that are currently disconnected to help with diagnostics) on xfinity. Prior to this event, everything had been working fine with no drops for about a year. We r...
Service Is Xfinity
Router model: RBR750
Firmware: V4.6.5.14_2.0.54
Modem: Arris Surfboard: SB8200 (personally owned, not provided by ISP. But registered and functioning)
Does the RBR show a front PINK led when this happens?
Has a factory reset and setup from scratch been performed since last update?
What is the CAT# LAN cable between the modem and RBR? CAT6 is recommended.
The RBR does not show a pink light. On the home status page, internet says waiting. I just did a full factory reset and setup from scratch. It was connected with a 5E, but I made a new Cat 6.
Other updates:
I was able to get my Linksys 1900 ACS router to work just fine, accept renewals etc. No major changes, just started working.
The Orbi still loses internet connectivity at the end of the lease, or whenever I try to renew. I can now use release/renew (on connection status) to get internet to work without power cycling the modem.
I have always wondered how the Orbi products handle DHCP assignments from the ISP. There is an option on the Orbi debug page to "Enable LAN/WAN Packet Capture". When the debug information is saved to the user's computer, the zip file includes two pcap files (lan.pcap and wan.pcap). Opening the wan.pcap file with Wireshark and setting a display filter to 'dhcp' (lower case) will show the conversation between Orbi and ISP.
(I have wanted to capture this conversation on my Spectrum account for a long time, however Spectrum gives me a 1 Day lease (86,400 seconds) and the debug buffer will not hold that much data.) With your 2 hour lease, it should be possible to capture what is going on.
I would also check the RBRs debug page for system uptime when this happens as well.
Possible that there maybe a odd ISP service handling issue between the modem and RBR. I've ran my 7 series online and haven't seen this though I don't have the users same cable modem or ISP service.
