You want to set up two Cloud Routers so that one has an active Border Gateway Protocol (BGP) session, and the other one acts as a standby.
Which BGP attribute should you use on your on-premises router?
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A. B. C. D.D.
https://cloud.google.com/router/docs/concepts/overviewTo set up two Cloud Routers so that one has an active BGP session while the other acts as a standby, you need to configure BGP attributes on your on-premises router. Among the BGP attributes listed in the answers, the appropriate one to use is the Local Preference attribute.
BGP is a protocol used to exchange routing information between different networks. BGP attributes are used to determine the best path for routing traffic between different routers. When multiple paths are available to reach a destination, BGP attributes are used to select the best path.
The Local Preference attribute is used to indicate the preference for a particular path. When multiple paths are available, the one with the highest Local Preference value is preferred. In this case, you can set a higher Local Preference value for the Cloud Router that you want to act as the active router, and a lower Local Preference value for the standby router.
AS-Path is an attribute that indicates the sequence of autonomous systems (AS) that the route has traversed. Community is a BGP attribute used to group prefixes and control routing policies. Multi-exit Discriminator (MED) is an attribute used to influence the path selection process by advertising the cost of a particular path to the destination network.
Therefore, to configure two Cloud Routers so that one has an active BGP session while the other one acts as a standby, you should use the Local Preference attribute on your on-premises router to indicate the preferred path.