Cisco
300-415 · Question #47
300-415 Question #47: Real Exam Question with Answer & Explanation
The correct answer is C: 4. Each TLOC on a WAN Edge router forms a data tunnel with every other TLOC in the fabric, including those on its own router and on other sites.
WAN Edge Router Deployment
Question
Two sites have one WAN Edge each. Each WAN Edge has two public TLOCs with no restrict configured. There is full reachability between the TLOCs. How many data tunnels are formed on each Edge router?
Options
- A6
- B2
- C4
- D8
Explanation
Each TLOC on a WAN Edge router forms a data tunnel with every other TLOC in the fabric, including those on its own router and on other sites.
Common mistakes.
- A. 6 would represent the total number of unique TLOC-to-TLOC tunnels across the entire fabric (C(4,2) = 6), not the tunnels formed on each Edge router.
- B. 2 would only be formed if there was only one TLOC per router and only one remote TLOC to connect to, or if it only counted tunnels to the other router's first TLOC.
- D. 8 is incorrect; it suggests 2 local TLOCs forming tunnels with all 4 total TLOCs (2*4), which is incorrect because a TLOC does not form a tunnel with itself, and this overcounts bidirectional connections.
Concept tested. TLOC tunnel formation calculation
Topics
#WAN Edge#TLOC#Data Tunnels#SD-WAN Fabric
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