
Explanation/Reference:
I changed the answer on this to:
Layer 2 between distribution and access layers, with a Layer 3 link between the distribution switches
-> FHRP for convergence, no VLANs span between access layer switches across the distribution switches Layer 2 between distribution and access layers, with a Layer 2 link between the distribution switches
-> Support Layer 2 VLANs spanning multiple access layer switches across the distribution switches VSS -> Convergence (FHRP) is not an issue Original Answer was
Layer 2 between distribution and access layers, with a Layer 3 link between the distribution switches
-> Support Layer 2 VLANs spanning multiple access layer switches across the distribution switches Layer 2 between distribution and access layers, with a Layer 2 link between the distribution switches
-> FHRP for convergence, no VLANs span between access layer switches across the distribution switches VSS
-> Convergence (FHRP) is not an issue
The following are recommended best practices at the distribution layer:
Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 3