We have SAM, but I need to know if it can detect changes on the topology of Layer 2, I meant SPT? and in case that SAM can not do it, I want to know what tool or lisence do it...
Thanks a lot.
I'm guessing you actually mean STP (Spanning-tree Protocol) changes, not SPT?
If so, you can generate traps when changes occur on Cisco switches with the following command:
snmp-server enable traps bridge topologychange
you might also think of enabling other similar traps such as "bridge newroot" or port up/down traps.
You could probably also do it through the SYSLOG monitoring.