DHCP Lease Renewal only 1h27m every time

I was having frequent internet dropouts, every 1-2 hours after neighborhood line servicing, and after a lot of back and forth with Xfinity and Netgear forum searching, I noticed it corresponded to the lease time on my Orbi router. I updated the firmware on the Orbi router, and now it is maintaining a connection. However, my lease times for the last several days continue to be exactly 1h27m. I've done some wireshark packet analysis, and frequently Xfinity won't ack(nowledge) the DHCP request until seconds before it is set to expire.

It seems that bizarre DHCP lease situations are pretty common on this forum. Is there anyone that can help me get a longer lease?

Modem: Arris Surfboard SB8200

Router: Orbi RBK750

Responses

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user_482455

Contributor

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45 Messages

3 years ago

Id log into admin settings on your router and start there. Arris surfboard has an app, get app and look into the settings. Or do same with Orbi. This issue is not coming from Xfinity. Its coming from a setting in Surfboard or ORBI.

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osmall

Visitor

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2 Messages

3 years ago

Update:

Xfinity sets my DHCP server as 96.113.84.144 (number doesn't matter), which never responds to a DHCP request. However, when my router broadcasts (and not unicasts) a DHCP request, a different DHCP server 96.120.100.141 (again, number doesn't matter, it's just different) acknowledges the request and renews the lease.

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CCElizabeth

Problem Solver

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908 Messages

Hello @osmall. Thank you for taking the time to create this post or our Xfinity Community Forums! I am sorry to read about the frequent drops in service; this is not the experience we want for you. While we may not be able to extend your DHCP lease times (thanks @EG!), we can absolutely address the drops in service. You're in the right pace to get this resolved.

Please send a private message with your first and last name, as well as complete service address to "Xfinity Support". To do so, click on the chat icon located at the top right of this forums page.

Click "Sign In" if necessary
Click the "Direct Messaging" icon (upper right corner of this page)
Click the "New message" (pencil and paper) icon
Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list
Type your message in the text area near the bottom of the window
Press Enter to send your message

I no longer work for Comcast.

3 years ago

EG

Expert

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110K Messages

3 years ago

@osmall

Not you, or anyone else except for the Comcast engineers / headend maintenance techs can change the WAN / public DHCP lease length that is assigned to your connection from the Comcast system. Short duration lease times are typical when maintenance / upgrades are being performed on a local system.

(edited)

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magnum99

Regular Visitor

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7 Messages

@EG My luxul log shows a lease time of 7200 seconds (shown below) and has been that way for several months. I have a log from October 2021 for 14 hours with no lease time (it was 24 hours). Is there any way to get a message to the Comcast engineers/headend maintenance techs to change my lease time back to 24 hours. It has been far too long for a typical maintenance or upgrade.

Tue Jun 28 15:14:49 2022 daemon.notice netifd: wan (3633): Sending renew...

Tue Jun 28 15:14:49 2022 daemon.notice netifd: wan (3633): Lease of 73.77.22.192 obtained, lease time 7200

Tue Jun 28 15:14:50 2022 user.notice firewall: Reloading firewall due to ifupdate of wan (eth0)

Tue Jun 28 15:15:00 2022 cron.info crond[3333]: USER root pid 16323 cmd logrotate /etc/logrotate.d/domotz

3 years ago

0

Your Home Network

osmall

DHCP Lease Renewal only 1h27m every time

user_482455

osmall

CCElizabeth

EG

magnum99

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