I have a main and several satellite site's.
Between the main and the satellite site's, there are 2 physical links.
all site's have 2 layer-3 switches that are capable of
- dt-LACP (an LACP trunk, connected to the 2 layer3-switches)
These switches are not in a switch-stack in the Cisco/3Com way (configurable as one switch), but are separate switches with a Switch-Interconnect. Router redundancy is achieved using VRRP.
Should I connect the sites with
- a dt-LACP LAG
- create a OSPF network between all 4 Layer-3 switches