300-320 · Question #394
Which option must be included in the design when implementing a triangle looped access layer design?
The correct answer is A. first hop redundancy protocol. In a triangle looped design, each access switch connects to two distribution switches, and the two distribution switches are also connected to each other-forming a triangle. STP is required to block one port and prevent loops, so not all links are active. Critically, both…
Question
Which option must be included in the design when implementing a triangle looped access layer design?
Options
- Afirst hop redundancy protocol.
- BSingle uplinks between access and distribution switches.
- CLayer 2 links between access switches.
- DLayer 3 links between distribution switches.
How the community answered
(29 responses)- A93% (27)
- B3% (1)
- C3% (1)
Explanation
In a triangle looped design, each access switch connects to two distribution switches, and the two distribution switches are also connected to each other-forming a triangle. STP is required to block one port and prevent loops, so not all links are active. Critically, both distribution switches are capable of serving as the default gateway for end hosts, but hosts can only be configured with a single default gateway IP. FHRP (HSRP, VRRP, or GLBP) provides a single virtual IP address shared between both distribution switches, so hosts always have a reachable gateway even if one distribution switch fails. Without FHRP, a host pointing to the IP of the standby distribution switch would lose gateway reachability during a failover.
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