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user_yazi5m
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Sunday, May 11th, 2025

How do I keep upnp on my gateway always on?

It seems to turn off in recent months after never having done that previously. I have seen messages about changing the advertisement period but no clue as to what to change it to.

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XfinityAngie

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4 months ago

 

user_yazi5m, Thanks so much for reaching out to Xfinity Support. Here is what I found on the UpNP:
Here's how you can keep UPnP enabled:
1. Access your router/gateway's web interface:
Log in to your router or gateway's web-based interface (usually by typing your router's IP address in a web browser).
The IP address is often found on a sticker on the router or in your router's documentation.
You'll typically need your router's username and password, which are also often found on the router's sticker. 
 
2. Locate UPnP settings:
Look for a section related to "UPnP," "Universal Plug and Play," or similar terms.
The location of these settings may vary depending on your router's make and model.
Some routers have separate sections for "Device Discovery" or "Advanced Networking" where UPnP settings can be found. 
 
3. Enable UPnP:
If UPnP is disabled, enable it by checking a box, selecting an option, or toggling a switch. 
 
You may also find settings related to UPnP's advertisement period (how often the router broadcasts UPnP information) and Time To Live (how far the information is broadcasted). 
 
Adjust these settings as needed, but be aware that shorter advertisement periods can increase network traffic. 
 
4. Save your changes:
Make sure to save your changes after enabling UPnP and adjusting any related settings. 

 

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user_yazi5m

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I have done all of the above (except changing advertisement period and Time to Live) many times. After power failures UPnP is disabled and has to be reset but it also seems to need to be reset much more often than that maybe every few days. If for some reason advertisement period or Time to Live needs to be changed, I have no idea what to change them to that would fix this issue.

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4 months ago

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XfinityKassie

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user_yazi5m Hmmm, okay. Thank you for the update. I would recommend updating your Advertisement Period. What is it set at right now? 

 

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4 months ago

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user_yazi5m

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It is currently set for 30 min

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4 months ago

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XfinityAngie

Official Employee

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2K Messages

4 months ago

 

user_yazi5m, You could change the time if you'd like and see if it makes a difference. It can be modified in the Admin Tool after accessing the device's settings. It is advisable to set it according to your network needs, ensuring that devices can discover each other effectively while maintaining network performance. Remember to click "Save" after making any adjustments.

 

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user_to4hf4

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I can't keep resetting UPnP back to enabled as I am usually 2 states away from the XB-8 router location.

What should the Advertisement Period and Time to Live be set to so UPnP does not keep restiing - ??

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2 months ago

XfinityPeterH

Official Employee

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2.2K Messages

 

user_to4hf4

To help keep UPnP enabled on your XB-8 router without frequent resets, you can adjust the Advertisement Period and Time to Live (TTL) settings. Here’s a general guideline:

Advertisement Period

  • Recommended Setting: 30 minutes (1800 seconds)
  • Purpose: This setting determines how often the router broadcasts its UPnP presence to the network. A shorter period ensures devices are frequently updated, but it can increase network traffic.

Time to Live (TTL)

  • Recommended Setting: 4 hops
  • Purpose: This setting defines the number of network segments (hops) the UPnP advertisements can pass through. A higher TTL allows the advertisements to travel further, but 4 hops is typically sufficient for most home networks.

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
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2 months ago

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mrberko

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2 Messages

I have this exact same problem.  Like the other folks, I never had the problem until this year (2025).  I've tried multiple settings for the TTL and Advertisement Period, and the UPnP will still randomly disable (usually every few days)... preventing me from being able to access my computer remotely.  I've had 3 different technicians out to my house, the last 2 were "advanced" technicians... and I've spoken to advanced technicians on the phone.  None have been able to fix it.  In fact, none were even familiar with these gateway settings.  It's very frustrating not being able to find someone at Comcast/Xfinity who is even familiar with this let alone who knows how to fix it.  Something must have changed this year to start causing the issue.  I'd love for someone to offer a solution!

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28 days ago

XfinityEmilyB

Official Employee

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2.3K Messages

 

mrberko Welcome to our community forum! Thank you for reaching out so we can help with your ability to access your computer remotely. When you look at the log history, do you notice a specific event that triggers UpNP to be disabled? 

 

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Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
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26 days ago

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mrberko

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I've never looked at the log history.  I don't remember the exact moment that it last became disabled.  I believe it was Monday... but I'm not positive... and I don't know the time it dropped.  Nobody has asked me that question before.  I can certainly check that out for the next time it happens.

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25 days ago

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user_987d1d

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2 days ago

I have the same UPnP turning off problem. It appears to be somehow tied to long periods of attachment to UPnP devices (PC, NAS, etc) available remotely via UPnP.  My UPnP can go weeks remaining on... until I stay REMOTELY connected to a media server for several hours at a time.  In other words, when I don't use remote UPnP device access, UPnP stays on longer.  It's a real CATCH 22 problem.

NOTE: I've also tried several ADVERTISEMENT periods and TIME TO LIVE hops.  No difference.  And, I tried turning off ADVANCED SECURITY.  No difference. 

I tried port forwarding... but the ports don't open up correctly.  Keeping UPnP on without AUTOMATIC TURN OFF... MUST be a CUSTOMER OPTION!

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user_2796fc

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2 Messages

1 day ago

Okay. looks as if Xfinity is again...in the dark about their own issues regarding keeping UPNP from disabling on it's own. I am having same problem...and Xfinity advises NOT to port forward as it is a security concern/vulnerability. 

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