On the network shown in the figure, EBGP peer relationships are established between ASs through...

BGP supports Equal-Cost Multipath (ECMP) forwarding when multiple eligible routes have compatible path attributes. The maximum load-balancing 2 command permits up to two qualifying BGP routes to participate in load balancing.

R1, R2, and R3 originate the same prefix within AS 65123. R4 and R5 receive routes through different EBGP peers, with the same AS_PATH value, making them eligible for multipath forwarding when the remaining attributes match.

R6 can receive corresponding IBGP advertisements from R4 and R5 and use two equal-cost paths.

R2, however, originates the prefix locally, so its locally imported route is preferred rather than installing two equivalent external alternatives.

Huawei ' s BGP implementation requires matching route attributes, including AS_PATH, for ordinary BGP load balancing. Therefore, the correct statements are B, C, and D.

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