start by checking the 4507R logs for mac address or host flapping messages. It should have reported that certain mac addresses were been seen on ports that you know, in a stable situation, should not be learning those mac addresses.
Do all the mac addresses that were flapping between links all belong to one vlan ? If so, then you know the issue occurred on one vlan and not on multiple vlans. If the mac addresses belong to multiple vlans, most most likely there was a trunk link that was getting all flaky..perhaps a gbic or something.
Check out the "troubleshooting spanning tree problems" doc on Cisco.com for more troubleshooting tips
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...