Hello,
I want to know which is the best choice for spanning-tree in this design. We have a HP ProCurve Switch 5406zl as the root and fiber uplinks from it to 5 Cisco CE500 or 2960 switches.
The CE500 switches have the following choices:
mst - Multiple spanning tree mode
pvst - Per-Vlan spanning tree mode
rapid-pvst - Per-Vlan rapid spanning tree mode
The HP root bridge has the following:
ProCurve Switch 5406zl(config)# spanning-tree force-version
stp-compatible - The protocol operates as STP on all ports.
rstp-operation - The protocol operates as Rapid STP on all ports except those ports where a system that is using 802.1d Spanning Tree has been
detected.
mstp-operation - The protocol operates as Multiple STP on all ports where compatibility to the old STP protocol versions is not required.
ProCurve Switch 5406zl(config)# spanning-tree force-version
My initial idea is rstp. What would you recommend? There are Avaya phones connected to all the Cisco switches and the interfaces are configured with switchport mode trunk but many phones keep connecting and then losing sync.
