A network engineer is designing an access layer that requires all uplinks to be active. Furthermore, VLANs must span across the entire switch block. What design fulfills this requirement?
Please disregard. Looped square does have a link blocked but it is between the access switches, not uplinks. Correct answers are looped square and inverted U.
the reason why I believe it is correct as D is because it doesn't have a single point of failure
looped square
Support VLAN extension and Layer 2
adjacency across access layer switches
• Resiliency achieved with dual
homing (STP controlled)
• Offer quick convergence with
802.W/S STP standards
• In case of an access to distribution link failure
or a distribution switch failure, the second
access switch will carry all the traffic load
of both access switches
• 50 percent of access layer traffic might
cross the inter-distribution switch link
to reach the active FHRP
Loop Free Inverted U
• Support VLAN extension and Layer 2
adjacency across access layer switches
• No STP blocking; all uplinks are active
• If access switch uplink fails or one distribution
switch fails, the devices connected to that access
switch will be isolated (single point of failure)
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