I checked, all MTUs on these links are the same. The L2 MTU, however, is not. Does this have any effect?
On Wed, Jul 5, 2017 at 10:12 PM, Jason McKemie < j.mcke...@veloxinetbroadband.com> wrote: > No errors or packet loss. Strangely, it seems to be preferring the Rocket > M5 backhaul over the SIAE 11GHz link. The MTU on both ends of the link has > remained at default on these. I'll double check, but unless it changed > itself it should be the same. > > On Wed, Jul 5, 2017 at 8:13 PM, George Skorup <george.sko...@cbcast.com> > wrote: > >> Errors or packet loss? Something rate limiting multicast? Has someone >> recently changed MTUs? I don't know if RouterOS will even log OSPF MTU >> mismatches. Never tried it. If the IP/L3 MTUs don't match, then OSPF is not >> gonna have a good time. OSPF relies on IP since there is no native >> fragmentation in the protocol. >> >> As far as NTP and/or accurate time, I haven't experienced any issues with >> that in regards to OSPF. I discovered a router where the NTP process >> appeared to have crashed and the clock was off by like 10 minutes. OSPF was >> humming along with two neighbors for months and a third for hours because >> the adjacent router was rebooted. >> >> On 7/5/2017 7:20 PM, Darin Steffl wrote: >> >> I also recommend only using bug fix release for mikrotik. Also make sure >> you have clocks synced to an ntp source on every mikrotik router and that >> it's accurate. >> >> On Wed, Jul 5, 2017 at 7:09 PM Jason McKemie < >> j.mcke...@veloxinetbroadband.com> wrote: >> >>> Thanks. I'll try 6.38.7 tonight. >>> >>> There haven't been many changes to the network, and every is pingable. >>> I did add one static route for a Baicells eNB a week or two ago, but the >>> problem cropped up more recently. I'll have to look into that a bit more. >>> >>> On Wed, Jul 5, 2017 at 6:59 PM, Chris Wright <ch...@velociter.net> >>> wrote: >>> >>>> I recommend sticking to the Bugfix releases (currently 6.38.7). >>>> >>>> >>>> >>>> Did anything happen recently that could possibly have provoked the >>>> disappearance like a VLAN or other L2/L3 change? Are the neighbors pingable >>>> on their backbone IPs? >>>> >>>> >>>> >>>> Chris Wright >>>> >>>> Network Administrator >>>> >>>> >>>> >>>> *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Jason McKemie >>>> *Sent:* Wednesday, July 05, 2017 4:53 PM >>>> *To:* af@afmug.com >>>> *Subject:* [AFMUG] Mikrotik OSPF >>>> >>>> >>>> >>>> Has anyone seen issues with Mikrotik OSPF neighbors just disappearing >>>> for no apparent reason? All of my links are ok, but I OSPF just isn't >>>> picking anything up on one of them. I might try upgrading both of the >>>> Mikrotiks involved, this feels like a bug. I have 6.38.5 on one end and >>>> 6.38 on the other, both CCR's. >>>> >>> >>> -- >> Darin Steffl >> Minnesota WiFi >> www.mnwifi.com >> 507-634-WiFi >> <http://www.facebook.com/minnesotawifi> Like us on Facebook >> <http://www.facebook.com/minnesotawifi> >> >> >> >
