Unifi dhcp problems. Connected into the same switch.

Unifi dhcp problems Have confirmed this issue exists across multiple sites with varying types of DHCP Servers all 3rd party to the Unifi and various switch models. At least, that is the case in all the posts and videos I've seen, although they're not terribly recent. I have some new Ubiquiti APs and am using a VM for the controller. You can also run the command ipconfig /renew on the client to renew the DHCP lease information. 1 but you can use your preferred DNS A more straightforward solution might be to create a new network and wifi SSID, leave the defaults, and see if this solves the problem. Is your UDM your DHCP server? UDM Pro DHCP Issues Question So this might be a long post but I am looking for some help with an issues I am running into. Devices always I've seen past guidance on printers, but that seems outdated with the new Unifi interface. Also important, Starlink ONLY allows one DHCP address. 43. Introducing #UniFi Pro Max 16-Port Switches UniFi is misinterpreting DHCP traffic delays, and I have thousands of WPA authentication failures. All core switches (a mix of older US-24-250W & newer USW-24-PoE) have a . The last +/- 2 years unifi does have dhcp problems in some Firmware update. Right now I have a windows pc handing out ip addresses, but I want to get this working correctly. Or you use Unifi DHCP or you will have this issue no matter what. I just set the Options and done. 5. The guest vlan is 50 and the management Traditionally I've adopted devices via SSH and assigned them to one the dozens of client sites configured on our cloud controller. If you just use a 6 byte Option 43, you'll be fine, but if you have multiple DHCP 43 suboptions (as I do, because I have multiple vendors' devices requiring DHCP Option 43), the Flex Mini will silently fail to process DHCP Issue: Devices (notably Android) intermittently fail to pick up an IP address via DHCP where the DHCP server runs on Windows (AD Integrated). The employee vlan is 40. So if your dhcp server is on vlan 20 and you have vlan 10, 30 and 50, you would use dhcp relay on 10, 30 and 50 pointing the the ip of vlan 20. Lately my HP switches have been detecting an IP address conflict I was wondering if anyone could help me figure out what might be causing my issue with our DHCP server. The unifi box tends to be rather powerful but the other downside to increasing the subnet mask to solve this is the DHCP reservations take up space in memory. Reply reply bananasfk • We have a wifi printer from hp and with a fixed dhcp lease it still is un-connectable on port 80 if the wifi (not ubiquity) has not been reset - printing via cups works Under wireless networks in the unifi controller what is the setting for UniFi DHCP Server Options. 05. If I plug my laptop directly into the M6 Pro, I have zero issues. It failed over to the M6 just fine. Updating to the latest version of Unifi helped, but didn't totally fix it - we had to set the following: DTIM is set to 3 in line with recommendations from Ubiquiti for modern devices. If I set a static IP the laptop easily connects to the network and Internet. Almost the same config also works on my Unifi 6 LR with 23. We updated unifi os and bounced the systems and next step would be reconfiguring guest portal from scratch. Any firmware version higher than 4. 0 mask. Two UAP-AP-PRO units, controller software (v 6. 20 IP address (default for failover), and when restarted, they try a few times, then always failback to a . We are in the habit of static IP assignment for anything non-end user anyway, copiers So i found out this utility called dhcp guard as well as dhcp snooping, and I tried to enable it, added unifi dhcp server of the three vlans as trusted ones, but when i test if it works by plugging the cable to router lan ports, it doesn't detect or block the untrusted dhcp server of this router so when releasing and renewing IP on computers, I Investigation shows that I’m not getting a dhcp address. 20. And then mention what to fill in the fields under PiHole's DHCP server settings. Issue was fixed by changing my SFP port profile to All. 05 and 22. Cannot get the switch to relay DHCP to a DHCP server at a specific IP on a different VLAN. They run a USG with a Gen 1 CK. I have never used Unifi routing. If you use an external dhcp-server (such as pihole) then you will have to deploy one server per vlan. I will get random spurts of connectivity. 28 Set GTK rekeying to the same value on all SSIDs - this was the big one as it apparently broke the other SSIDs when one of them What firmware are your unifi aps and unifi network controlller at? I’ve had similar issues and unifi published known dhcp issues that they fixed with firmware. Duplicate IP addresses can result if you set a static IP directly on the NIC of a device, without removing it from your DHCP Range. 82. * I left the WAN interface using 8. Even after several reboots (devices and UDM Pro), the devices are claiming they can't obtain IP addresses. Verifying a Device's IP Address The user has a Linksys LRT214 with a simple two VLAN isolation setup for a guest wireless with a Ubiquiti Unifi UAP as shown below and DHCP won’t relay to wireless clients on VLAN2. The tech swapped your modem because it got you to shut up, and "fixed" the problem, that wasn't a problem, but more, an issue with your router setup they didn't want to deal with. "Your DHCP reservation has been made, but this IP can only be obtained by connecting to its respective network. Each time, DHCP issues only happen on the WLAN side, never physically cabled machines. Set the lease time to something higher and most devices won't have issues. I created a VLAN for Guest Access to keep the guest WiFi off of the office network. Devices will connect to the Guest WiFi and be given an address like 169. 43 clients can't obtain IP address. Setting a static address doesn’t work either. Everything else is wifi. Make sure that Auto Update is disabled Settings > Site > Services, uncheck Automatically Upgrade Device Firmware. Oddly even IPv6 did not work. Connected into the same switch. general-networking I'm having issues adopting my UXG-Lite. There’s apparently a bug in the latest Issues with DHCP dropping on ethernet, not on wireless . However, Microsoft DHCP Server by default ignores the flag and always responds as a broadcast. The ISP box is in full bridge mode and the UDM-SE is the DHCP server. Networking. I see there's a ton of DHCP posts but didn't see one exactly like this. 24). I started at the main office and got 3 set up with hardly a second thought. On my hardwired connections I'm not seeing any issues related to DHCP. We have 4 networks on different VLANS that the APs are broadcasting. 168. lots of DHCP issues here for a while on previous firmware e. I found a related post on the net: * The DHCP server responds with an IP address offer, which the relay agent then forwards back to the client. connects without fails every location every AP. I can route out to the internet, and can access internal resources by IP just fine. Today, this setting can be found on the UniFi Controller (Cloud Key): I started having trouble about three weeks ago configuring VLANs on a new Unifi switch. I'm not sure how/where to configure a DNS option for my VPN connected clients. " This is a place to discuss all of Ubiquiti's products, such as the EdgeRouter, UniFi, AirFiber, etc. So I Since people say you shouldn’t have two DHCP working on a same Network should I disable the DHCP on my second router and leave the first router with the ip passthrough and the DHCP on. While I was initially happy at seeing the DHCP-failure statistic drop dramatically after a network-wide upgrade to 5. Log into your Unifi Controller. Common Causes of UniFi Adoption Errors 1. Let me explain On our themepark I use a PFsense firewall for Guest Wifi ( VLAN 200 ) on our corporate network wich hosts about 90 UniFi switches wich are all connected with fiber to our NOC. Changed out upstairs AP itself, moved ports, changed wires, etc. Takes between 1 and 2 weeks, then all of a sudden I either cant get DHCP or DNS resolution on anything using non unifi DHCP / DNS servers (Both APs on Firmware 4. Overall, it's been an awesome upgrade and I've really enjoyed working with the hardware. This has worked traditionally and, after equipment delivery, UniFi devices report to the controller and all is well. But servers, network gear, things I need to access So, unless I add a UniFi switch to the UDM and have all clients connecting only through the Unifi switch, the DHCP Guarding setting isn't going to do anything. Any suggestions where to look? Network diagram. Then, if all your unifi devices are set to get an ip by dhcp, you can set manage then (mark as static) on Dhcp server ( udmp). com. 21, when . More posts you may A 48 port poe and 24 port poe switches and 3 ap-pros. If I connect to this Wi-Fi then no dhcp issues. The max time is 3600 seconds and minimum is But for the Wifi devices, they have problems. Finally, for I know this is a very specific configuration question but the principle is pretty standard so I thought someone might have some experiance. When I connect my laptop, set the VLAN ID to 30, and configure the network for DHCP, the router assigns an IP address from the DHCP address pool correctly. Reply reply Top 1% Rank by size . UniFi allows you to configure DHCP with some advanced features: Lease Time: How long a device keeps its IP before the DHCP server assigns a new one. Having an issue at the moment that is perplexing me. If you need it to fit into your existing Unifi infrastructure without issue, go with the non-mini flex. The beginning of this year I was haunted by Unifi + DHCP + WPA Enterprise issues, i am using UAP AC PROs so not sure how helpful this is to you but maybe it will help someone else here. The Ubiquiti forums are filled with posts regarding this. If I connect a laptop to it, it'll get the 169. I have configured VLAN 30 as a third-party gateway in the UniFi Controller and assigned this VLAN to the SSID "test_vlan. Its 100% a issue with the APs. Run the standard test to see which DNS HFC to rj45 -> pfsense re0 wan in -> pfsense re1 lan out -> unifi US-16-150W switch -> ap ac + u6 enterprise. Any help is really, really appreciated, thank you! If your UniFi device and UniFi Network application are on different VLANs, or you are hosting UniFi Network in the cloud, follow the troubleshooting steps here. HomeNetworking comments. I already have a machine on the network where we can install the controller. " Home Assistant users with Unifi Protect Integration, PLEASE READ upvotes Anyone have problems with electrical shorts on the doorbell camera? upvotes I've not had this issue since. Dhcp relay is used when you dont have a dhcp server set on the individual vlan. 11361) for my APs, but instead it actually gets worse and the issue becomes present after My DHCP Server is the Unifi UDM Pro itself. When my wifi was on the untagged network it worked just fine and I got all DHCP leases without issue so there is something going on with the VLANs. But they The current version of the Unifi AP firmware has known DHCP bugs. Reply reply as if you just connected the laptop to the Meraki with no switches — and your wife’s computer can connect with no issues then you’ve isolated it to DHCP. While this does fix my issue, it does give me Recently upgraded to the U6-Enterprise and have been seeing lot of wireless connectivity issues. Enabling and disabling any settings that looked at packets: Deep-Packet Inspection, IGMP Snooping, DHCP Snooping, DHCP Guarding, etc. All All devices are statically assigned IP addresses. My ssids link to VLAN then DHCP assigns addresses. One theory is that DHCP snooping is preventing clients from reaching the DHCP server when traffic gets busy. I then changed the ports connecting to the AP’s to trunk and then created 2 new ssids called guest and management. 3) and not None (because that would hose the network). Option 43: Used for devices like IP phones that need extra configuration information. r/disability. We have assigned eache UniFi AP with a static IP and the sonicwall issue DHCP for the UniFi access points. The UDM should have been the DHCP server for every subnet it hosts, unless you disabled it. As of today no one has a definitive answer, so I simply ignore it. The last half of that time I've had some UBNT switching in the mix. 24 broke the world. Also this is written for EAX20 : The extender comes set up to use a dynamic IP address, which is the correct setting for most home networks. I have 6 unifi AP’s connecting to a Unifi Controller. For each Wireless Network, Multicast and Broadcast Control is not checked in New interface. The thing is because we aren’t using WDS for our server we need to understand the various files needed to complete the booting process. Now though I need to have DHCP options at client sites to use these. Per UniFi forums problem may well be a known issue with the Smart Plug and having mesh'd APs on your network. For Simple DHCP Guarding do I just set my Trusted DHCP to 192. So I got used to set both, DHCP Option 43 and unifi DNS name on each site, no matter if VLAN (L3 Structure) or a flat L2 Network. Since being automatically upgraded to 8. Problems with DHCP and APs . DHCP reflects this. This rather confirms it is an issue on the iPhone with DHCP on WiFi. Prior to completing my tweaks, all wireless clients suddenly could no longer get an IP address from the Unifi USG DHCP Timeout DHCP: The router provides a static lease based on the printer's MAC. However I also didn’t need to open any ports, that part strikes me as weird that you couldn’t pair it Hi guys, Since 2 weeks I experience lots of problems with my PFSense firewall. 20 firmware. Even DHCP reserved IP's had been seen to cause reversion to the 192. I can get an IP and ping the gateway, but cannot get out past that. Tried "Restore" my console from the Unifi Cloud backups all the way back to the oldest and problem exists there as well. I had rolled back to 4. We recently installed 7 unifi pro access points at our office to replace some aging equipment. I’m almost 100% certain the issue lies in UDM SE, UniFi Pro 24 Switch, Inter-VLAN Routing and DHCP Reservations IPs assigned outside of LAN and VLAN ranges -- DHCP issues with after upgrade to 22. I’ve also tried enabling UniFi’s “New User Interface” and just creating a network for VLAN 30, with “Auto Scaling” off. This is my first time configuring a UniFi produce as my router/DHCP Server/DNS Server. I plugged in my UXG-Lite and wired it directly to my laptop. I set all 3 ssid’s to vlan. Wireless clients, nothing. yes, the doc should mention that the UDM's DHCP server needs to be set to Relay (pointing to 10. The gateway is the meriki device. Unifi Switch and Netgear GS305EP VLAN issues self. Yes, we would need to know which equipment and specifically which versions of software you're running. * address via DHCP according to UniFi. Got through the VLAN 4040 requirement after a little research. All my other networks are configured with MS DHCP for the Domains. 80. The issue is for my Chromebooks SSID and iPad SSIDS. The UniFi device will be unreachable because VLAN 20 is not allowed (tagged) on an upstream switch port that the device's traffic must pass through to reach the gateway and DHCP server. VLANs are in play, but shouldn’t be affecting DHCP traffic imho. Downgrade to . Please tell me I’m . In the UniFi console we configure Network Boot (Option I am new to the Unifi product, so bear with me. They require you use their dumb gateway. Wireless: 2 Unifi AC APs comments sorted by Best Top New Controversial Q&A Add a Comment. I set up 4 Corporate VLANs, General (1), Internet Only (30), Media (10), and Security Cameras (50). 20 address. When I move them over to AC-HD they connect without any DHCP is usually a 4 step process: 1 - DISCOVERY (client to the world)2 - OFFER (DHCP server (dish) to client)3 - REQUEST (client to DHCP server)4 - ACK (DHCP server to client) Once an IP lease from the DHCP has been obtained, it becomes a 2 step process (3 + 4) The tcpdump cmd to use is:tcpdump -vn -i (WAN PORT) port 67 and port 68 DHCP responses are normally sent as unicasts unless the client requests a broadcast (see here). their new D3. 2 is in the dhcp range, you can assign and reserve this ip to your switch. this is false. We've gone through the upgrade, downgrade, update the DTIM settings, run wireshark, etc. Currently, I have Static IP assigned in DHCP. Not UDMP to 10. r If I connect devices to my normal network via the same APs, they appear to connect without issue. This was quite awhile ago (at least 6-9 months). Their product line isn’t as diverse as UniFi but they seem to make good stuff from the few products I’ve tried. We use an Unifi UDM-Pro as our main router and have Unifi switches and Unifi APs. That is hardly a solution though -- it's just swiping the problem under the rag: both pi-hole and USG use dnsmasq. But, since 2 weeks I The above linked video has no mention of using profiles, but others have. 2) and attempt to ping each AP, this time the bedroom AP resolves However, I now see there are limitations with DHCP on the switch, in that it has to hand out the IP addresses itself and there is no way to specify a DHCP relay. Previously the AP’s and the controller were in the same VLAN. 14 Spice ups. The Starlink router has an IP passthrough/“turn off the router” option which pushes the IP down to the next level device. I've tried but in the new design and the legacy layout and I can't find the option anywhere. At the moment the issue we are having is that a single wireless device will randomly drop the connection and when you try to reconnect, the device never gets given an IP. The other 3 networks are A-OK. This assignment and reservation had to be done on the UDMP. My IoT VLAN fails to assign DHCP leases - and my Guest network also fails for similar reasons. My suggestions come from an experience where 7 non windows devices, especially ones that did not self I purchased a new Ubiquiti setup, Dream Machine, three U6-LR APs, USW-Pro-48-POE, and a US-16-150W. But today I am configured a USW-24 which I have configured many times with no problems. 4 because I want the USG itself to get DNS Admittedly, in unifi controller, they were set to DHCP instead of static. Also connected is the gen 2 cloud key. I have tried both 23. DHCP Reservations: This is a middle ground between DHCP and Static IPs. This is a place to discuss all of Ubiquiti's products, such as the EdgeRouter, UniFi, AirFiber, etc. I then added DHCP on the USG Pro (via the controller) and now the wireless network was getting IPs from the USG Pro. 24 firmware. Works or did lol. Finally I remembered that some time ago I enabled the "AUTO-OPTIMIZE NETWORK" option under 'configuration/site' in the Unify Funny, I had an issued with DHCP being borked for some wireless clients the other week, which I had convinced myself was some kind of weird UniFi bug (AP-AC-Pros on 4. If it has not been resolved by the end of this, factory reset and re-adopt the device. Here's a scenario in which I have run into problems: non Unifi gateway w Unifi APs and dhcp running on a server instead of gateway, if you enable the guest wifi network clients won't get an IP because they are isolated from the server. Each of the APs was given a 192. Well, Flex Minis are really weird and don't handle DHCP Option 43 they way other UniFi devices do (because, of course). It seems that the only devices having this problem are ones that connect to the Unifi hotspots. I have seen a ton of forum posts on this issue, If you read through them all you will see all the expected recommendations: firmware update, restart router, connect to If you need just a dumb PoE powered switch, this would work. DHCP relay is enabled on the Unifi controller for the wireless network, pointing at the IP of the Windows server on the default VLAN. DHCP snooping I want to give my Ubiquiti devices DHCP IP reservations ("Fixed IP") so they always have the same IPs. Will this first router automatically set the ip to the devices connected on the second router even though second router DHCP is off. However, getting the controller to be able to see the APs without them being assigned an IP configuration by DHCP is where I know I'll run into issues. Other problems include conflicts with certain Ubisoft games and issues with the Auto HDR feature, along with the dreaded Blue Screen of Death (BSOD). Thanks The two internal network VLANs work perfectly and have for months without issue. All firmware is up to date on all devices. There's a gen1 Cloud Key doing the controller - a Sonicwall doing routing, and a Windows Server 2012r2 doing DNS/DHCP. Downgrade firmware to 4. The only reason you would need DHCP relay is because you run a DHCP server for a scope that it is not directly connected to the DHCP server. The one thing I hadn't thought to add in, which appears to have fixed all of my issues, was adding the DHCP server and gateway address into Pre-Authorization Access. Over those years I have used a Netgear running OpenWRT, Edgerouter ER-X, and now pfSense. 7 on my CK on friday, I am unable to get DHCP leases on any devices on VLAN's. Our DHCP is handled by W2008R2 and has plenty of addresses free. 2. If the problem persist then it’s most likely a network problem. I've got new network cables, issue has Basically they started years ago had a Comcast router with no other firewall which probably could not have the DHCP shut off, just stupid bad work in general. I am using OPNsense as my firewall / router, and within OPNsense I see the DHCP request going from the MAC address of a test device connecting to a wifi network that is tagged to a VLAN, and then I see the DHCP reply from the DHCP server (it's setup as a The test case I have for this was Unifi APs, and FireBrick DHCP, using WPA Personal (i. Thinking this would be a breeze I traveled to one of our remote offices to install 3 more, and ran into immediate problems. However the same config works when downgrading to 22. This is off Unifi controller. The network: Internet Service Provider (ISP) → UDM SE → USW-Enterprise-24 → U6 Enterprise. There's not a dedicated DHCP leases list in Unifi. For many cheap consumer routers they have limited memory and is why some do not allow you to expand the dhcp pool or support larger than a 255. UniFi, AirFiber, etc. Ethernet works fine connection wise but still experiences the same problems as the WiFi DNS timeouts DHCP timeouts ect. The UDM-Pro was unable to reach or process something to do with that external resource causing the system to run out of memory/cpu and then start crashing other services (DHCP) after some time. 0 and 23. When i connect a device or request a IP-address the whole network goes down for 5 ~ 10 minutes. my point is simply that these steps should be added to the doc for completeness. 10. Configuring DHCP Relay in a UniFi network involves several steps. News, resources, and perspectives pertaining to Have used UniFi layer 2 switches for quite a while with other layer 3 switches. 7: 458: October 15, 2020 Unifi Controller 6. Network Connectivity Issues. You can also go to Clients and you'll see the list of all devices. 7 and everything is fully updated. I have tried multiple resets but nothing fixes this issue; the problem is that, since usg pro 4 doesn't work as DHCP, i can't install cloudkey on my network, and i am basically stuck. Would make it easier for clients to fix problems themself when I'm not available while allowing me to keep everything with tidy addresses. You should also probably disable unifi's dhcp server on that vlan. It won't even let me open up the configuration settings for most things (DHCP, Fixed IP addresses DHCP range option is set to 10. I also have 8 unifi cameras that would be nice to have on the same network to have all security things on one subnet. I also set up corresponding SSIDs and associated them with each VLAN. 11. My experience with the U6-LR was not so good until I turned off If you are looking for a more proactive way to prevent unauthorized DHCP server problems, DHCP guarding would be one of the best solutions. We have our SonicWall DHCP handing out addresses for VLANs and I have always been able to Subject: DHCP Issue on VLAN 50 with SonicWall, UniFi Equipment, and Laptop. Each of these VLANs have DHCP setup on them. It was previously set to only LAN. You may have inadvertently changed a setting somewhere. A lot of people bring repeaters and extenders. I guess dumping the UNIFI DHCP and installing MS DHCP for the subnet might be the best. Now, I know this is allegedly fixed in the latest version of the firmware (4. 24. For each Wireless Network, Block LAN to WLAN Multicast and Broadcast Data is not checked in the Legacy interface. 32 U6-LR's total, 5 devices giving us issues. jclambert1 (jcLAMBERT) February 20, 2021, 4:04pm 12. The Guest VLAN is where I have problems, every week, sometimes multiple times in a single week. It also prevents malware or any DHCP attacks. 0) running on a server (not a DC) and the APs have been adopted, they’re getting IP addresses (from DHCP) and everything looks fine. The same goes with a DHCP failure But Unifi Controllers luckily have a way to solve this possible adoption issue. I have them connected to my Meraki switch infrastructure. Except when a laptop connects to one of them it won’t get an IP. You also try to connect your Chromebook to a hotspot on your mobile phone to determine if the problem is the Chromebook or Router. I've had issues with this as well, if you can just bounce the UDMP. I’m running Unifi Controller on Cloud Key V2. Then you can add a switch to the LAN port and and just connect the USG to the switch, like any other LAN connected device. DHCP timeout. Hopefully this helps someone! Archived post. Issue is in the title. Also verify that your VLAN's are correctly set in the Unifi Controller. x IP at first but then after maybe 10 min it'll obtain a DHCP lease Turn DHCP off for those VLAN's and see if you still get an IP address. wireless, question. Internet to them is supplied by a modem/router, that itself also has We have this working with dedicated APs and switches and an extensive VLAN configuration through Ubiquity but we’ve had several of their BS firmware issues causing the whole network My understanding is that the DHCP request reaches the main router but the response gets lost. For reference, I use a pi-hole internally for both DHCP and DNS. Additional problems include a disappearing mouse cursor in Chromium-based apps, internet connectivity failures, time zone glitches If you are having problems your Unifi UAP-AP AC DHCP Not Working Using Firmware 4. It’s a horrible issue as some devices are working which makes it harder to know what could be Of course today I'm dealing with an issue with my primary ISP. This was particularly after upgrading to the Unifi NanoHD APs. (This is This is a place to discuss all of Ubiquiti's products, such as the EdgeRouter, UniFi, AirFiber, etc. Specs: UDM Pro 1. 1. In my case the MAX BR1 is next in line Is there any way to see a list of all DHCP reservations in UniFi? I set a reservation for a specific MAC address within "Clients" section on a PC that I've now replaced with a new one. Resolution: As pointed out by Dom Nik, one has to "Block LAN to WLAN Multicast and Broadcast Data". DHCP Problems: If the DHCP server is not functioning properly, the AP might not receive an IP address, preventing it from connecting to the controller. My setup includes a SonicWall device handling both firewall and DHCP roles, UniFi switches, and a UniFi Access Point, with a laptop connecting via the AP. Does my controller also need to be on an interface that is a trunk port or is there something Since I run a wifi for a vacation trailer park. Can ping all IPs on both subnets. Most clients work just fine, but a few newer Apple devices (iPhones, iPads) don't get a DHCP lease - despite "connecting" to the wifi successfully. 4. jneurath no routing issues. Important non-ad devices should have a DHCP reservation and a static A record in DNS. I have already checked and we are nowhere near to maxing on From what I can tell, the issue is related to the Geo IP feature within the Global Threat Management. Various solutions exist online from rolling Hi, I have upgraded my dump ap (Unifi 6 lite) to 23. Archived post. I'd like to set the same IP address for the new one, but I can't since I've already set it for the old one. 71. When you have changed the DNS server for a network, you will need to reboot the client for the change to take effect. I run a UDM Pro. New comments cannot be posted and votes cannot be cast. 46, I'm now confounded by an increase in association times, with the "WPA Authentication Timeout/Failure" stat now being high (between 400 and 600 within Comcast router should be connected to your WAN port on the Sonicwall. I do not expect the main router to be the problem as the other ap on the Suddenly WiFi clients are frequently failing to get an IP assigned by the DHCP server. 03 again. or When I tested it with my phone it hung at obtaining IP address. This affects only WiFi clients, machines which are physically connected all have no problem. We can see on the control panel that the clients are getting DHCP timeout. The network is a cable modem connected to a Fortigate 30e (dhcp server) with a unifi cloud key, unifi switch, and 7 Unifi APs. 3. I think Grandstream can be a solid budget friendly alternative to UniFi for switches and APs. 16: 1769: August 9, 2021 Trying to set up 2 Unifi access points, clients won't get DHCP from my DCs. DHCP configuration. To avoid making too many changes before the next event, we settled on disabling IGMP and DHCP snooping on the UniFi system. I thought the router's DHCP reservation would fix that, I was wrong. So I wanted to enable DHCP Guarding to make sure none of those repeaters are messing up my network IP management. DHCP issue and my setup Question Recently I had my /24 network run out IP address. To re-iterate, there ARE wifi clients working just fine on the IoT Network. So I set static IPs for each device, re-adoped, and all is tip top. I recently purchased 8 of these for our network. I'm running into an issue with switch seemingly not passing DHCP for some reason. wright-is (wright-is) You can Google-search Unify all you want and get the same results as UniFi - Google knows what you meant, but you are probably more likely to get your answer here or in their forums. DHCP Guarding acts as a second line of defense against malicious or unauthorized DHCP servers, as it configures Unifi switches to restrict DHCP servers. I'm finding that my wifi stays up, but my ethernet keeps completely disconnecting, when it retries to connect it cannot establish an IP address. Now trying layer 3 on UniFi for the first time. My solution: Move to UniFi software running in Docker. Plus tv and sonos sound bar. The printer and WAP use DHCP to ask for an IP but the router always gives it the same one. I figure this must be a DHCP So it already received an IP address of the DHCP service that is running on your router. APs itself have IPs through DHCP, but for the clients I have DHCP So our businesses have had intermittent connectivity issues ranging from short down times to multiple hour long down times for a while now. e. DHCP Relay issue UDM-Pro Unifi & DHCP issues. And when I'm connected via the M6 Pro, I can ping out to the internet but pages just fail to load 95% of the time. The DHCP server in this case has no clue that the SSIDs. (Windows and Linux), and both DHCP scopes have the same issue. I’m just guessing now, and spinning my wheels It's VLAN, 200, works fine if you connect to a port set up for 200 via ethernet. Unifi has a dhcp-setting for every network (that includes vlans). It's under the clients, which also shows anything with a static IP that shows up in the ARP table of the switch. My subnet is 0. Automation for the People! A Subreddit dedicated to fostering communication in the Ansible Community, includes Ansible, AWX, Ansible Tower, Ansible Galaxy, ansible-lint, Molecule, etc. Both AP's ports are set to Native VLAN / Network of the VLAN 200 with tagged VLAN management blocked. So my questions: (1) I did the following, should that prevent this from happening again? a) Disabled auto updates in unifi controller I ran into this issue initially due to having AT&T Fiber. My only issue is that I have no internal dns resolution. If I plug in a computer to a similarly configured switch I've recently had an issue with one of the UniFi installations that I manage. If anyone has DHCP issues, the fairly unanimous recommendation is to downgrade to 4. So okay. The only device that is reachable on that moment is the UDM Pro. Sometimes I'll even get notifications from the Unifi I have a strange issue when i switch DHCP on a network to DHCP Relay which points to both my Domain Controllers. Just to report back to the thread, that I followed Cosmacelf's advice and upgraded the firmware on my APs. a random dynamic IP. Also check scheduled upgrades. Hello everyone, I'm experiencing an issue with DHCP on VLAN 50 in my network setup and could use some insights. But you are right there isn't a DHCP server option where you can change i DHCP IP range, it is only a client. Question I have several networks including VLANs (default, guest, IoT, DMZ) with 4 APs all on the default network. 16, with the latest network updates as well. I just get 169 addresses. DHCP Option 43 Generator Are you assigning IP's with DHCP reservations, or are you assigning static IP's? We have many dozens of Unifi switches, but they really work best with static IP's assigned. The DHCP issue is one of many that is plaguing the 24H2 update. Advanced DHCP options. There's a known DHCP issue with UAP version 4. r/ansible. DHCP Relay seems to be a USG-only feature. 8 and 8. 8. Reply reply anonynony227 • Our APs are UniFi AC Pro. The normal net (lan) works fine in all Thank you for feedback. 1 since that is the IP of the USG? Thanks so much for any time and help While this should be a smooth process, various issues can arise, causing the adoption to fail. I have site to site working fine. I thought the problem then was the switch I was trying to configure was a model I had not configured before. This can lead to slow connection times and intermittent connectivity. 50 - 10. None of the other have this issue. Controller version is 8. I had to change the amout in the DHCP that can be use. My controller is running locally on a cloud key gen2. He also bought 10 AP in wall units. However, it is not providing a VLAN IP for the Wi-Fi SSID. Network. I’ve tried both the “DHCP Server” and “DHCP Relay” options as well. x, DHCP on a VLAN with IP Helper enabled on the network fails for both 5ghz and 2. My unifi APs are connected via a unifi switch to a BT smart hub which provides the dhcp addresses and also it’s own Wi-Fi. Just have some stubborn ones not connecting at all to the new subnet, and new devices never seen won’t join without APIPA. tl:dr - Can we please get a more solidified fix for the DHCP issues that seem to consistently pop up with Unifi's APs? This has happened a couple of times now, Unifi support, after nearly 3hrs of tortuous chat support this morning, have not been helpful. Essentially I'm trying to setup a DHCP relay between my house and my kids house. I ran a packet capture on the sonicwall and it is receiving the request and issuing a response, so I don’t think the issue is there. Gregg. When I open a Terminal locally on my machine (192. Actually yea, if I was you in testing would make sure if no road blocks were in place if clients can connect. Ubiquiti Dust covers and Keystone blanks to match Patch panel!!!!! DHCP issues when roaming after switching to UDM-Pro SE Wireless I recently upgraded my USG-Pro-4 for UDM-Pro-SE, and as part of that upgrade, exported my site from my Unifi controller (on a Ubuntu VM) into the UDM, and re-adopted my devices (few switches and 4 APs) since then, my once bullet proof Wi-Fi now suffers from constant DHCP Losses UDM Pro allows to configure unifi devices with either DHCP or Static, but setting them to static will actually configure the device itself with a static IP rather than just use DHCP. Members Online • I updated the firmware to 1. This process ensures that clients on different subnets can still obtain IP addresses from a centralized DHCP server. Members Online. nonIP connectivity. The issue is none of my VLANs are passing DHCP. Here’s a step-by-step I recently upgrade my network stack to a Ubiquiti UniFi-based setup. Configuring DHCP Relay in UniFi. All hardware has the latest firmware. the DHCP issues occurred with various devices using certain network cards. For some reason the AP’s would not pick up an IP from our DCHP DHCP issues Discussion So only 2 lan based pcs on the network. Everything works perfectly fine, even those devices with 0% “Wi-Fi experience”. New Now I'm also having issues with most of my other devices first claiming they couldn't reach the DNS (I removed the Pihole DNS from Unifi in the interim) and now most are saying they can't obtain IP addresses. 60 (for all guest devices and so on). Make sure you have restarted the router. 05 (Unifi switch/AP) upvote The two main causes for this issue are: Statically setting IP addresses on the device(s) A Rogue DHCP server on the network; Enter the IP address of your trusted DHCP server. <end rant> Edit: powering via PoE off of a US-48-500W using a Gen2 CK up to date. Anyone have any experience with the AP's doing this? They have an existing Unifi setup in other buildings with CloudKey, Switches, and APs and are looking to upgrade this building as well. 11 without problems. 24, for example. I've got a This is a place to discuss all of Ubiquiti's products, such as the EdgeRouter, UniFi, AirFiber, etc. . If you have a UniFi gateway and are using the built-in server, use the network's Gateway IP here. 03. How to rollback 4. x. they struggle to get a ip-address from the dhcp server. So I left it to work on it Depending on the firmware involved (and what you use to issue DHCP addresses), there have been some issues. 1 EMTAs are rated for all service tiers, and are now the default modem in most areas that they hand out. Not every Prior to completing my tweaks, all wireless clients suddenly could no longer get an IP address from the USG DHCP service, and consequently, could not connect to the internet. simple password) security, and also having IPv6 on the network. I then created a DHCP server that seems to be running fine. We run 100+ Sonicwall sites with majority of them running unifi apsI feel your pain The downstairs one has never once been an issue. DHCP offers will be blocked from all but the specified DHCP server. Basically what I am trying to do is set up unifi door access which requires the use of a UDM Pro. I've got two SSID on various Unifi access points. Instead of complicating my life and extracting the certificate on it the way some folks have done, I just put it in bypass mode and assigned the MAC address of my UDM as the client to assign as the DHCP server and to send all traffic. I can ping DHCP from my APS. It more looks like they don't configure themselves All PCs joined to AD should self-update. Problem: Routine firmware update on the Smart Plug left it in a Disconnected state. 3. 24 follow these steps to rollback back the firmware. The "best" workaround we have so far, that alleviates the number of clients not getting IPs, it's a You will have to be specific about your network configuration. I have a site with a small Unifi install, twi UAP-AC-Pros, an AC, and an AC-LR. Recently I setup Option 43 on our office DHCP server and found adoption to be so much faster/easier. If you don't have an MS server and Hello Team! I just encountered an issue after installing latest update for Unifi Controller. 4ghz. Vlan tagging is all done with the controller wich works very well. UDP broadcast interruptions, wireless association failures, etc. I know unifi is handling its own DHCP on a normal subnet guessing about 256 users based on the IP I get. Starting this week, all sorts of wireless weirdness. This can be either a routed or a switched environment. Which I’m segregating my network into vlan’s. No rules blocking anything, and existing Alexa devices are working fine. i can't get ips on all devices. For staff, sixthform, IT and my staff BYOD, i've got no issues. Even after a factory reset it wouldn't complete adoption and would end up Disconnected. Workable - but not my desired setup. The General VLAN works fine I'm seeing high 300-500 DHCP Timeout/Failure and sometimes devices are connecting and not getting proper DHCP config stating "No Internet". Sadly the Unifi dashboard doesn't seem to offer this as an option. 255. 0. We even have two different DHCP servers for guest and staff, and by different I mean, completely different systems. 254. The Primary (Native) Network of a switch port a device is connected to is not allowed (tagged) on an upstream switch port. 234 and of course this doesn't work. To fix this: Select the Network with an overlapping IP Some older/misconfigured routers and DHCP servers transmit the DHCP offer/ack messages as broadcast packets, which are much more likely to be dropped. I can see from the DHCP server logs that the MAC address of Posted by u/Hour_Ad_1035 - 1 vote and 2 comments I've had a rock solid network setup with a USG-Pro, Unifi Switch PoE, and a couple of nanoHDs for a couple of years now. The internet speed was upgraded so I made some optimizations to the network to better utilize the potential increase in bandwidth. + Both windows 11 and have started with cannot get dhcp errors? Something new on the udm SE maybe? isp works fine on WiFi? UniFi, AirFiber, etc. If it cannot connect when you statically assign the Ip address, there We are seeing evidence of DHCP issues from Wireshark and syslogs, but the leases are not being depleted. Running Unifi gear on my end as well and no issues with my Bambu printer. Especially the ESP IoT devices fail to connect to the WiFi network constantly requesting for DHCP address. More posts you may like r/ansible. 4 with various switches (USW-Pro-24, Switch Flex Mini) and APs (NanoHDs) I went through your recommendations and still had issues. VLAN1 is untagged and is the network the users are having issues with. I have been trying to solve this at the Unifi community but I'm starting to think that it might be a pfsense problem. It stays connected Nice! Glad they are helpful. 20 and that will most likely fix your problem. So, I tried the ssh method and used your iptables command, but replacing I’ve been pulling my hair out on this. If the UniFi AP is in an "Isolated" state, see here. Multicast Enhancement DISABLED on all my SSIDS Multicast DNS ENABLED IGMP Snooping ENABLED DHCP Snooping ENABLED I have a 3rd party firewall and PiHole for DHCP. And I'm not convinced the problem is on the server side in the first place: no other device in the network has the issue, only USW and UAP-AC that happen to run the same version firmware. Chromebooks would take an age to get a The only time the family would have issues is if you reboot the DHCP server while am address is being requested. Everything works, but from time to time it sends me an e-mail saying "unknown DHCP pool for Network LAN is exhausted, turn on auto-scaling to resolve this issue" and I don't know, why. This could be a printer issue, but they worked on our previous network. Still no problems. 11355). The managers at the business would just reset the SonicWall and they’d get back up and running again for a week or so. Was having a CLI really You'll find it under DHCP Service Management -> Show Options -> DHCP Service Management -> uncheck Auto I use 1. I tried to reset all APs and UCK to factory default and configured them from the scratch with no success. Their subnet is 1. 28. 05 and after that clients connecting to the guest wlan do not get ip addresses any more. Main router is pfsense (not a Unifi gateway). To test if the client is actually using the configured DNS server, you can use the website dnsleaktest. We discuss Proton VPN blog posts, upcoming features, technical questions, user issues, and general online security issues. Ours is not a DHCP issue but a hotspot portal issue, portal disabled and guest clients just rock n roll free internet. 30. Full DHCP, etc. Clients can’t obtain IP address through DHCP. We have 15 sites that are fine, and 5 that are not. Had to split DHCP, the gateway has ~100 IPs in it's pool, server handles the rest. DHCP is not working on the USG Pro 4. BTW: i also can't seem to SSH into any device. Manually untag a port (set the default VLAN to whatever you are testing), and see if a hardwired client has the same issues. 2, if 10. Turned out the MAC address of the DHCP server (Windows) had changed and I needed to update the UniFi SSID config to allow broadcast packets from it. I disconnect from Eth0, change the network settings on my laptop back to automatic from manual, and plug in to In USG, under Services -> DHCP -> DHCP Server, be sure Register client hostname from DHCP requests in USG DNS forwarder is On*. FortiWLC DHCP Issues upvote r/disability. g. Hi All, I'm running UDMPRO, specifically UniFi OS 3. doa70 • Looking at UniFi Network → Radios → Connectivity, I see DHCP timeout every 1 to 2 minutes for both of them. On my LAN, Unifi is not routing DHCP clients to the Adguard DNS server, despite changing the settings in the UnifiOS. Under networks and under Wireless Networks (each SSID needs to be manually tagged) I also had problem with several clients that where constantly DHCP'ing an other strange network issues. One via rj45 and the other from sfp. aggpkd kbilro xadpi gpuh tdeflt uepwu dcmdvl eodcmdrx zdfd bvpsv