EIGRP - Additional and Advanced EIGRP Features - Stub Routing

5 important questions on EIGRP - Additional and Advanced EIGRP Features - Stub Routing

What does the EIGRP stub feature do in EIGRP? 3

-A stub router does not propagate routes learned through EIGRP to its neighbors, except routes with leak-map construction

-it only advertises a subset of its own EIGRP-enabled network (summary,connected, static, redistributed and receive-only)

-Neighbors of a stub router will never send a query packet to the router.

What are the rules for summarizing stub router behavior? 2

-Orginating query packets from stub to distribution router not modified
-Processing recieved packtes; it is allowed to answer queries from distribution if the route is allowed to be advertised by the stub router (leak-map/connected/summary)

What happens when a stub router recieves a query for a route the stub router is not allowed to reply?

Stub router will reply with an infinite distance

What are the advantages for EIGRP stub routing? 3

-prevent suboptimal routing in hub-and-spoke networks
-prevents stub routers with low-speed to be transit routers
-prevents number of query packets  (faster convergence)

What is the command to enable stub and what is the default?

(config-router)#eigrp stub

Router will by default advertise connected/summary

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