Reggle's Blog-Tracing unexpected BPDU packets in a LAN.

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Tracing unexpected BPDU packets in a LAN.

Disclaimer: the logs are taken from a production network but the values (VLAN ID, names) are randomized. Recently, I encountered an issue on a Campus LAN while performing routine checks: spanning tree seemed to undergo regular changes. The LAN in question uses five VLANs and RPVST+, a Cisco-only LAN. At first sight there was no […]
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