With reference to the above diagram: Is 10.124.124.141 supposed to be able to ping 10.124.124.161 if the setup is correct ? There is no router in-between, the idea is that the VLAN 215 spans two switches trunked together to make a single 48-port switch if you wish. I am however not getting this to work (the ping fails from either side). The configuration for port 16 on switch 2 is:
interface GigabitEthernet1/0/16 switchport trunk allowed vlan 10,20,215 switchport mode trunk !
The configuration for port 11 on switch 1 is:
interface GigabitEthernet1/0/11 switchport trunk allowed vlan 10,20,215 switchport mode trunk spanning-tree portfast !
The configuration for port 21 on both switch 1 and 2 is:
interface GigabitEthernet1/0/21 switchport mode trunk srr-queue bandwidth share 1 30 35 5 priority-queue out mls qos trust cos macro description cisco-switch auto qos trust spanning-tree link-type point-to-point !
and port 23 is configured the same as port 21.