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300-420 · Question #413
300-420 Question #413: Real Exam Question with Answer & Explanation
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Advanced Addressing and Routing Solutions
Question
Refer to the exhibit. An enterprise uses dual-homed MPLS connectivity for critical branch locations and single-homed MPLS connectivity for smaller, less essential branch sites. Against the enterprise security policy, Branch A experiences traffic flow from Branch B toward HQ when the MPLS2 network fails. Which technique resolves this issue?
Options
- ABGP prepending on Branch A router toward the MPLS2 network
- BACLs on Branch A routers that block Branch B traffic toward HQ
- CBGP as-path filter within Branch A to advertise locally originated prefixes only
- DACL on Branch B router that blocks Branch B traffic toward Branch A
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Topics
#BGP Route Filtering#BGP Policy#Transit Routing#Multi-homing