4A0-115: Nokia Ethernet Virtual Private Network Services

By Nokia · Question Mode

QuestionQ11

Multi-Homing in EVPN

In the exhibit, the default algorithm elects the designated forwarder (DF) on ESI 1. Which PE is elected as the DF for VPLS 10?

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Explanation

The default EVPN DF election algorithm orders the candidate PEs by numerically lowest IP address and uses the service value modulo the number of candidate PEs to select an ordinal. For VPLS 10 with four candidates, 10 mod 4 = 2; ordinal 2 in ascending IP-address order is PE3 (10.10.10.3).

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