Refer to the exhibit. Which duplicate configuration causes this message during setup of an MPLS BGP network?

The correct answer is B. Originator ID. In a BGP network, every BGP speaker must have a unique Router ID (BGP Identifier). When two BGP routers are configured with the same Router ID, a conflict arises because the Originator ID attribute used in BGP route reflection is derived from the Router ID. Having duplicate Route

Service Provider VPN Services

Question

Exhibit

Options

AASNs
BOriginator ID
CRouter ID
DCluster ID

How the community answered

(42 responses)

A
10% (4)
B
83% (35)
C
5% (2)
D
2% (1)

Explanation

In a BGP network, every BGP speaker must have a unique Router ID (BGP Identifier). When two BGP routers are configured with the same Router ID, a conflict arises because the Originator ID attribute used in BGP route reflection is derived from the Router ID. Having duplicate Router IDs causes BGP session establishment errors, as the protocol cannot uniquely identify the originating router. This produces error messages during BGP session setup in an MPLS BGP network. The duplicate Originator ID (resulting from identical Router IDs) is the root cause of the reported error message.

Topics

#BGP#Route Reflector#Originator ID#Loop Prevention

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