Good thought, but only the initial Discover/Offer is broadcast, renewals are unicast.
From: AF <af-boun...@af.afmug.com> On Behalf Of Josh Luthman Sent: Thursday, January 19, 2023 12:01 PM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] Mikrotik DHCP and EPMP 2.4 1000 radios Talk to Cambium. Sounds like the broadcast packing isn't making its way back. Do you have any of the multicast/broadcast things set? On Thu, Jan 19, 2023 at 11:32 AM Nate Burke <n...@blastcomm.com <mailto:n...@blastcomm.com> > wrote: I've had this problem at limited times for a couple years, and I've posted about it before here, But it's started becoming more frequent across sites, and I curious if I'm still the only person with this problem. Mikrotik Router providing DHCP -> UBNT Edgepoint S16 -> EPMP 5ghz AP (1000 or 3000) -> EPMP SM F300 -> EPMP 1000 2.4 AP (nonGPS) -> EPMP 1000 2.4 SM -> Customer Router. The Customer router will lose it's DHCP lease, and be unable to renew. Mikrotik log fills with 'Offering lease without success' Rebooting the EPMP 1000 2.4 AP (nonGPS) is the only way I've found to fix it. It does not seem to affect any customers who's router is directly connected directly to a F300 radio. Only one's that are using the EPMP1000 2.4 radio to extend the network. This has happened on at least 5 sites now, and it's becoming very annoying. Previously when I've posted, some people mentioned some Allow firewall rules for DHCP Traffic in the mikrotik, those don't seem to help. My new piece of information yesterday is that I'm migrating customers between 2 grain legs about 200 yards apart (no truck rolls, just changing preferred AP). Both grain legs are built with EPMP 3000 Aps. I have a customer that was installed on the new grain leg, has a EPMP1000 2.4 AP (nonGPS) that feeds 4 EPMP1000 2.4 SMs on different buildings and has been working fine for months. They have now had this DHCP Issue twice now in the last 24 hours None of the 4 buildings could get a DHCP Lease. Rebooting the 2.4 AP immediately fixed the problem. So It's almost like this is triggered by another 5ghz SM on the 3000AP. All SM's are set to block a DHCP Server below the SM. It's just strange that rebooting the 2.4 AP always fixes the problem. Until it starts happening again, from a few hours, to several days. If I put the EPMP1000 2.4 SM into NAT mode, it seems to be able to get a DHCP lease from the mikrotik just fine. Open to any ideas. -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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