On Fri, Oct 16, 2015 at 08:11:18AM +1100, Andrew Miehs wrote: > > switchport trunk encapsulation dot1q is missing on the port on second switch.
After seeing that many times, I'm compelled to ask: Are people reading the problem description before responding? One of the VLANs works, the other VLAN doesn't, neither VLAN is native. That's not what an ISL vs. 802.1Q mismatch gets you. (He has dot1q on both ends. On the 2924 because he configured it. On the 2950 because it doesn't do ISL (and doesn't have "sw tr enc ..." in its command set, since there's no need).) My money is on the 2924 not maintaining a separate MAC address database per VLANs (causing problems because in his topology, the router will use the same MAC address on both subinterfaces, but the switches will see the far-end router's MAC address on one port for one VLAN and a different port for a different VLAN). But I don't know if the 2924 actually has that limitation or not. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
