Hello, I have got a strange issue with trunk-ports from Cisco classic WS-C3850-12S to Meraki MS120-48LP. Some VLANs don´t get trough the trunk line. The MS-switches are on Firmware MS14.33 and the Cisco Classic switches are on the newest recommended software version. The trunk ports are not restricted in any way (all VLANs allowed). VLAN 3 is not possible to get trough, VLAN1,2,5,8 are going trough. I tried it with port aggregation/etherchannel but also without. Spanning-tree works good. Standard VLAN is VLAN1. devices in VLAN3 can´t see each other on the other side but each device can see devices in this VLAN on the own switch. Other VLANs are working well, and all devices can see each other independent on which switches. Is that an bug? Or am I stupid?
... View more