Is it an Asus router? It's a bit of a known issue and there are several threads about it. Just search for "Your ISP's DHCP does not function properly".
I have a asus router, i had that error before, i went to the routers admin page, it did state that error, but there's a link to fix that, the link is self explanatory...
It just guided me to redo the connection, couple of questions and a few clicks, once i just clicked the link and it fixed its self, the router i have is a asus rt-ax86u, boatload of options, way more then the average user needs...
Hello @Krenneh, thank you for reaching out to us on our community forums! For troubleshooting purposes, could you please further clarify the issue you are having with your router?
Hi, I can report that I have the same issue as this and other threads about ASUS routers faulting due to the DHCP failure. While I can only assume the inflexibility of the ASUS firmware to handle the timing constraints of the DHCP discovery/offer/request/acknowledgement process is the root cause, it would be nice to have a page documenting that some (most?) ASUS router are likely to be incompatible with the Xfinity service over the long term. My router worked for months with the issue surfacing about once a quarter. Now it happens everyday at 3AM for the last three mornings. Each time it happened it was up to me to tip toe the equipment to get the connection back up. Talking to support showed me that Xfinity seems unwilling to escalate this issue to determine root cause whether it be a fault of ASUS or the provisioning/DHCP software that Xfinity implements. ASUS and Xfinity are certainly large enough players for their engineering teams talk directly and solve this. I am left to solve this on my own which means buying new router hardware and hope things are compatible with no approved list to reference. Thanks for considering this request for a better situation.
Hello @user_529e06, could you please send our team a direct message with your full name and full address? Our team can most definitely take a further look at this issue. To send a "Peer to peer" ("Private") message: Click "Sign In" if necessary • Click the "Peer to peer chat" icon • Click the "New message" (pencil and paper) icon • Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line • Type your message in the text area near the bottom of the window • Press Enter to send it
I no longer work for Comcast.
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. Was your question answered? Please, mark a reply as the Accepted Answer.
My ASUS router says "ISP's DHCP does not function properly" every time I lose power or turn off the router. If I connect my cable modem to my PC the internet is working fine, so it has to be a router issue. Or maybe the way Xfinity's DHCP works with the Asus router is the problem.
My solution was (my router had the latest firmware available from Asus):
1. Turn off the modem
2. Factory reset my router.
3. Turn on modem
4. Setup the router's WIFI etc.
Hope this works for others, because I spent many hours laboring on how to fix this issue.
I have an Asus AC1750 paired up with the Arris SB8200 modem. After spending several frustrating hours I stumbled on the Asus Router app. After downloading to phone, I got into the router it queried about DHCP, I answered yes, problem solved!
I have an Arris SB6183 modem with an Asus RT-AC5300 router. I've had the same modem and router for years and they have worked reliably. Now I have the error "Your ISPs DHCP does not function properly." However, if I connect the modem directly to a computer I can get an IP address and get the full connectivity at advertised speeds. Following suggestions from the now closed thread I did try resetting the modem online, and it did reset.
I have tried both the primary and secondary WAN ports on the router, reset the router, reset the modem and nothing works. Note that for the last couple of years I've been using Comcast as a secondary backup provider with another provider's fiber as my primary connection with auto-failover. The router works fine with the fiber provider. It is only the last month or so that Comcast doesn't work. If I can't get this to work it may be time to just cancel Comcast.
Andyr1
Gold Problem Solver
•
8K Messages
4 years ago
Is it an Asus router? It's a bit of a known issue and there are several threads about it. Just search for "Your ISP's DHCP does not function properly".
(edited)
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BruceW
Gold Problem Solver
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26.5K Messages
4 years ago
ASUS explains the "Your ISP’s DHCP does not function properly" message this way:
So you may want to check the suggestions in https://forums.xfinity.com/conversations/your-home-network/connection-troubleshooting-tips/602da777c5375f08cdea3db9 . Especially check downstream power levels and SNR, upstream power levels, and the event log.
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Jlavaseur
Problem Solver
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948 Messages
4 years ago
I have a asus router, i had that error before, i went to the routers admin page, it did state that error, but there's a link to fix that, the link is self explanatory...
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EG
Expert
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111.4K Messages
4 years ago
@Krenneh
Poke around on Google. There appears to be a number of potential causes;
https://www.google.com/search?q=Your+ISP%E2%80%99s+DHCP+does+not+function+properly&rlz=1C1CHBF_enUS937US937&oq=Your+ISP%E2%80%99s+DHCP+does+not+function+properly&aqs=chrome..69i57&sourceid=chrome&ie=UTF-8
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BruceW
Gold Problem Solver
•
26.5K Messages
4 years ago
What is the explanation, and what is the fix?
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Jlavaseur
Problem Solver
•
948 Messages
4 years ago
It just guided me to redo the connection, couple of questions and a few clicks, once i just clicked the link and it fixed its self, the router i have is a asus rt-ax86u, boatload of options, way more then the average user needs...
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XfinityAldrik
Official Employee
•
2.2K Messages
4 years ago
Hello @Krenneh, thank you for reaching out to us on our community forums! For troubleshooting purposes, could you please further clarify the issue you are having with your router?
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user_2338fc
Visitor
•
1 Message
4 years ago
My ASUS router says "ISP's DHCP does not function properly" every time I lose power or turn off the router. If I connect my cable modem to my PC the internet is working fine, so it has to be a router issue. Or maybe the way Xfinity's DHCP works with the Asus router is the problem.
My solution was (my router had the latest firmware available from Asus):
1. Turn off the modem
2. Factory reset my router.
3. Turn on modem
4. Setup the router's WIFI etc.
Hope this works for others, because I spent many hours laboring on how to fix this issue.
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0
user_2841d9
Visitor
•
2 Messages
4 years ago
I have an Asus AC1750 paired up with the Arris SB8200 modem. After spending several frustrating hours I stumbled on the Asus Router app. After downloading to phone, I got into the router it queried about DHCP, I answered yes, problem solved!
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techpicky
Visitor
•
5 Messages
4 years ago
I'm having the same issues that others have commented on in the now closed thread https://forums.xfinity.com/conversations/your-home-network/your-isps-dhcp-is-not-functioning-properly-asus-router/602daed6c5375f08cdf792db
I have an Arris SB6183 modem with an Asus RT-AC5300 router. I've had the same modem and router for years and they have worked reliably. Now I have the error "Your ISPs DHCP does not function properly." However, if I connect the modem directly to a computer I can get an IP address and get the full connectivity at advertised speeds. Following suggestions from the now closed thread I did try resetting the modem online, and it did reset.
I have tried both the primary and secondary WAN ports on the router, reset the router, reset the modem and nothing works. Note that for the last couple of years I've been using Comcast as a secondary backup provider with another provider's fiber as my primary connection with auto-failover. The router works fine with the fiber provider. It is only the last month or so that Comcast doesn't work. If I can't get this to work it may be time to just cancel Comcast.
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