Are there alternative loop prevention mechanisms that can complement or replace BPDU-based spanning tree in certain network designs?
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what is bpdu
- What is the Forward Delay in a BPDU? How are Bridge IDs formed?
- What is the significance of the MAC address in the Bridge ID? How does the administrative configuration of bridge priority influence BPDU contents?
- How can you isolate and diagnose spanning tree loops by analyzing BPDU behavior?
- How can you analyze captured BPDU frames using tools like Wireshark to understand spanning tree behavior and troubleshoot issues? What are the key fields to examine in a BPDU when diagnosing a spanning tree problem?
- What are the reserved fields in a BPDU and their purpose (if any)? How does the BPDU version number indicate the spanning tree protocol being used?
- What are the implications of misconfigured native VLANs on BPDU communication?
- What are the considerations for spanning tree design and BPDU management in large, multi-vendor network environments? How do wireless LAN controllers (WLCs) and access points (APs) participate in spanning tree and process BPDUs to prevent loops in the wireless network segment?
- Is it necessary to prioritize BPDU traffic on network devices?
- How can intrusion detection/prevention systems (IDS/IPS) be configured to monitor for malicious BPDU activity? What are the common attack vectors that exploit vulnerabilities in spanning tree protocols and BPDU handling?
- What are the control plane protocols used in fabric technologies for loop prevention? How do overlay networks like VXLAN handle loop prevention in the underlay network, potentially involving BPDUs?
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