Cisco
300-420 · Question #108
An engineer is tasked with designing a dual BGP peering solution with a service provider. The design must meet these conditions: - The routers will not learn any prefix with a subnet mask greater than
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Advanced Addressing and Routing Solutions
Question
An engineer is tasked with designing a dual BGP peering solution with a service provider. The design must meet these conditions:
- The routers will not learn any prefix with a subnet mask greater than
/24.
- The routers will determine the routes to include in the routing table
based on the length of the mask alone.
- The routers will make this selection regardless of the service
provider configuration. Which solution should the engineer include in the design?
Options
- AUse a route map and access list to block the desired networks, and apply the route map to BGP neighbors
- BUse a route map and prefix list to block the desired networks, and apply the route map to BGP neighbors
- CUse an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors outbound.
- DUse an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors inbound.
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Topics
#BGP Filtering#Prefix Lists#Route Manipulation#Service Provider Peering