Things to check. 1.Does the whois of these IPs correspond correctly? These could be geolocated to the wrong country. Start here. http://www.iplocation.net/ <http://www.iplocation.net/>
I would make sure your OSPF is taking the same path in and out of the towers. If OSPF is not weighted properly you could be sending traffic out one interface and it could be coming back in another interface. Things would work, but VOIP and other time sensitive protocols run into issues. I had a client that ran into this issue last week. They adjusted their OSPF costs but did not take into account the return path. Keep in mind OSPF is from the router’s perspective and both inbound and outbound has to be taken into account. Most folks just think about the outbound path from that router. Justin --- Justin Wilson <[email protected]> http://www.mtin.net <http://www.mtin.net/> Managed Services – xISP Solutions – Data Centers http://www.thebrotherswisp.com <http://www.thebrotherswisp.com/> Podcast about xISP topics http://www.midwest-ix.com <http://www.midwest-ix.com/> Peering – Transit – Internet Exchange > On Jul 1, 2015, at 11:57 AM, That One Guy /sarcasm > <[email protected]> wrote: > > Did AT&T make some change to their microcells? We have customers callin in > alot with their microcells no longer working. I initially thought it was > because we moved some customers to some IP space we borrowed from our > upstream. But we have had a couple that didnt change and one that actually is > triple NAT. > > We dont support these things at all, we just make sure their on a public and > tell them to call AT&T to recommend a compatible router and provide > configuration instruction so its not a support issue im concerned about, just > curious if others are seeing this. > > We did change from static routing to OSPF, but I cant imagine that would have > had any impact since the customers are still traversing the same path > > -- > If you only see yourself as part of the team but you don't see your team as > part of yourself you have already failed as part of the team.
