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When deploying MPLS/BGP IP VPN, which of the following descriptions is wrong regarding the use of BGP to exchange routing information between PE-CE?
- A . In the case of CE multi-homing, enabling BGP AS number replacement may cause routing loops. BGP SoD can be used to prevent routing loops in VPN sites.
B. When BGP is used to exchange routing information between PE and CE, if the autonomous systems where the two VPN sites are located use the same private AS number, the AS number replacement function can be used to replace the received private AS number with any specified AS number. The AS number in the network route to prevent the route from being discarded due to repeated AS numbers
C. In the Hub&Spoke scenario, when Hub-CE and Hub-PE use IGP, Spoke-PE and Spoke-CE cannot use EBGP
D. When BGP is used to exchange routing information between PE and CE, there is no need to import private network routes into BGP on PE.
Suggested Answer: B
Posted : 03/02/2023 1:42 pm