Which mechanism does OSPF use to prevent loops in an MPLS Layer 3 VPNs environment?
A) sham link
B) P-Bit
C) domain ID
D) down bit

Name: Which mechanism does OSPF use to prevent loops in an MPLS Layer 3 VPNs environment? A) sham link B) P-Bit C) domain ID D) down bit
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Question

Quizplus · Accepted Answer

The down bit is used in OSPF to prevent routing loops in MPLS Layer 3 VPN environments by indicating that a route has been redistributed from BGP into OSPF.

Which Mechanism Does OSPF Use to Prevent Loops in an MPLS