Which two routing protocols allow for unequal cost load balancing? (Choose two.)

The correct answer is A. EIGRP C. BGP. EIGRP (A) natively supports unequal cost load balancing using the variance command. The variance multiplier allows EIGRP to install multiple routes into the routing table as long as their feasible distance is within the variance factor of the successor route's metric. BGP (C)…

Advanced Addressing and Routing Solutions

Question

Options

AEIGRP
BIS-IS
CBGP
DOSPF
ERIPng

How the community answered

(23 responses)

A
91% (21)
B
4% (1)
D
4% (1)

Explanation

EIGRP (A) natively supports unequal cost load balancing using the variance command. The variance multiplier allows EIGRP to install multiple routes into the routing table as long as their feasible distance is within the variance factor of the successor route's metric. BGP (C) supports unequal cost load balancing through the DMZ Link Bandwidth feature (using the link-bandwidth extended community) combined with the maximum-paths command, allowing traffic to be distributed across paths proportionally to their advertised bandwidth. OSPF (D) and IS-IS (B) support only equal-cost multipath (ECMP) load balancing - all paths must have identical costs. RIPng (E) also supports only equal-cost load balancing.

Topics

#Routing Protocols#Load Balancing#EIGRP#BGP

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