I have a hierachical network design using VSS as core switch/router, redundant distribution switches and access switches with multiple VLANs.
- EIGRP (EIGRP stub on distribution switches)
- Routed-Etherchannels (/31) between core and distribution switches
- L2 Trunk between distribution switches (since I need VLANs on multiple access switches)
- HSRP configured on distribution switches (HSRP active = RSTP Root)
I attached a drawing of the network.
When I first set up this configuration, everything works.
After some time hosts can no longer reach computers outside their building.
Inter-VLAN connections inside the building are still working.
If I shut down the according VLAN i/f on the distribution switch it works again :(.
If I restart one of the distribution switches it works too......for some time :(.
I hope this discription was heplful, so you can give me a hint of what could be wrong in my config.
Thank in advance!