In a secured VTP, we have many but small VLANS. But now we are hit by a Hardware Constraint: Our Switches (c3560G) can't handle more than 128 Spanning-Tree Instances. Reducing the Vlans is no option for our Security Audit, per-vlan-disabling of SPT (rstp to be exact) is no option for us either.
Is there any way to enhance the VLAN-Capactity of c3560-Switches (e.g. different IOS), or do we really have to either buy new Hardware or split the VTP into multiple Domains? If so - is there anywhere a comparison table, how many STP-Instances which Cisco-Switch can manage?
Currently used Hardware: WS-C3560G-48TS
Currently used Software: c3560-ipservicesk9-mz.122-25.SEE2.bin
Thx in advance and sorry for the bad english
Greetings from Bern, Switzerland
You can go for MSTP (Multiple spanning tree) which gives you the possibility to run several VLANs in the same spanning-tree instance. MSTP also run rapid spanning tree giving you the same convergence time as RSTP.