Which feature is supported by ElGRP but is not supported by OSPF?

Question

Options

• Aroute summarization
• Bequal-cost load balancing
• Cunequal-cost load balancing
• Droute filtering

• A
  6% (3)
• B
  4% (2)
• C
  88% (45)
• D
  2% (1)

Explanation

EIGRP vs. OSPF: Unequal-Cost Load Balancing

Unequal-cost load balancing (Option C) is a distinctive feature of EIGRP, enabled through the variance command, which allows traffic to be distributed across multiple paths even when those paths have different metrics - something OSPF simply cannot do. OSPF only supports equal-cost load balancing (Option B), meaning it can distribute traffic across multiple paths, but only when those paths share the same metric cost, making Option B incorrect as a differentiator. Both EIGRP and OSPF support route summarization (Option A) and route filtering (Option D), so neither of those features distinguishes one protocol from the other.

Memory Tip: Think of EIGRP's variance command as giving it "flexibility" - just like the word variance implies variation or difference, EIGRP can handle paths of varying costs. OSPF is more rigid - all load-balanced paths must be equal. Remember: "EIGRP is unEQUAL, OSPF is EQUAL."

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