A company is deploying BGP multihoming to provide network connection redundancy for several branch sites. Which method can be used to avoid the branch transit routing situation?
- ensuring that no IGP session is running on branch site BGP routers
- designating a data center or a specific location to handle the transit traffic
- applying inbound BGP route policies so that only data packets from other branch sites can enter local networks
- applying outbound BGP route policies so that branch sites do not advertise routes learned from the WAN connection
Explanation: Multihomed environments should be configured so that branch routers cannot act as transit routers. In most designs, transit routing of traffic from another branch is undesirable, because WAN bandwidth may not be sized accordingly. Transit routing can be avoided by configuring outbound route filtering at each branch site so that the branch sites do not advertise what they learn from the WAN but advertise only networks that face the LAN.
Exam with this question: Quiz - Multicast
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