Hello all,
I have a very confusing technical issue with my EX2200 POE switch (or entire network). Picture this, our network has a default vlan and a guest vlan (18). I have 4 EX2200 POE switches that manage the 2 wireless networks(internal and guest). All the POE switches are configured similarly. They all meet to a switch in my main switch closet that handles the guest vlan traffic, and the core to handle internal traffic.
Port 0 is an Access port for the Guest Vlan. A line goes from this port to the switch for the guest traffic. Port 1-4 are trunk ports with Guest and default vlan for the access points. Port 0 is limited to 10Mbps.
All areas worked great for several weeks. I was out of the country on vacation, and apparently the entire network went down for 3 hours, then came back "by itself". When I got back, I checked and couldn't determine the cause of the outage (this was 3 days after the issue occurred). One thing I noticed was that the guest for one area was not working though. I could not access anything on the guest from 3 access points, all going into the one juniper switch. I tried plugging into the ethernet port with my pc with no luck as well (rules out wireless causing it). Guest works in all other areas.
So here is where things get weirder...today I ran a new cable from the switch to the main switch closet to rule out a bad cable as the issue. When I plug it into the Access port at 10Mbps, no change. Out of curiosity, I created another Access port and did not limit it on the Guest vlan and plugged the cable in. Success! Guest network is back!!! (or so I thought)...
The ENTIRE network went down when that cable was plugged in...everything except the guest....unplug the cable, and the internal network came back immediately.
So I have been doing this a LONG time and have never seen this before. I configured a new switch and threw it in to try, and the same issue. I am at a loss and am hoping someone has some idea of what is causing this....
Thanks!