300-320 · Question #519
To use multiple path from distribution to core
The correct answer is B. ECMP. Equal-Cost Multi-Path (ECMP) allows a router or switch to simultaneously use multiple paths of equal cost to the same destination, effectively load-balancing traffic across all equal-cost links between distribution and core layers. This maximizes bandwidth utilization and…
Question
To use multiple path from distribution to core
Options
- Ainstall IGP
- BECMP
- CRSTP+
- DHSRP
How the community answered
(57 responses)- A2% (1)
- B88% (50)
- C4% (2)
- D7% (4)
Explanation
Equal-Cost Multi-Path (ECMP) allows a router or switch to simultaneously use multiple paths of equal cost to the same destination, effectively load-balancing traffic across all equal-cost links between distribution and core layers. This maximizes bandwidth utilization and provides redundancy. Installing an IGP alone doesn't guarantee multipath usage without ECMP being enabled. RSTP+ (Rapid Spanning Tree) actively blocks redundant links to prevent loops, which is the opposite of the goal. HSRP (Hot Standby Router Protocol) provides first-hop gateway redundancy but only one gateway is active at a time - it does not utilize multiple paths simultaneously.
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