Refer to the exhibit.
Network administrators have set up a hub and spoke topology with redundant connections
using EIGRP. However, they are concerned that a network outage between Router R1 and
Router R2 will cause traffic from the 10.1.1.x network to the 10.1.2.x network to traverse the
remote office links and overwhelm them. What command should be used to configure the
spoke routers as EIGRP stub routers that will not advertise connected networks, static
routes, or summary addresses?

A.
eigrp stub

B.
eigrp stub receive-only

C.
eigrp stub connected static

D.
no eigrp stub connected static

E.
No additional command is needed beyond a default EIGRP configuration.

Explanation:
A router that is configured as a stub with the eigrp stub command shares connected and
summary routing information with all neighbor routers by default. Four optional keywords can
be used with the eigrp stub command to modify this behavior:
• receive-only
• connected
• static
• summary
This section provides configuration examples for all forms of the eigrp stub command. The
eigrp stub command can be modified with several options, and these options can be used in
any combination except for the receive-only keyword. The receive-only keyword will restrict
the router from sharing any of its routes with any other router in that EIGRP autonomous
system, and the receive-only keyword will not permit any other option to be specified
because it prevents any type of route from being sent. The three other optional keywords
(connected, static, and summary) can be used in any combination but cannot be used with
the receive-only keyword. If any of these three keywords is used individually with the eigrp
stub command, connected and summary routes will not be sent automatically.
The connected keyword will permit the EIGRP Stub Routing feature to send connected
routes. If the connected routes are not covered by a network statement, it may be necessary
to redistribute connected routes with the redistribute connected command under the EIGRP
process. This option is enabled by default.
The static keyword will permit the EIGRP Stub Routing feature to send static routes. Without
the configuration of this option, EIGRP will not send any static routes, including internal static
routes that normally would be automatically redistributed. It will still be necessary to
redistribute static routes with the redistribute static command.
The summary keyword will permit the EIGRP Stub Routing feature to send summary routes.
Summary routes can be created manually with the summary address command or
automatically at a major network border router with the auto-summary command enabled.
This option is enabled by default.

In the following example, the eigrp stub command is used to configure the router as a stub
that advertises connected and summary routes:
router eigrp 1
network 10.0.0.0
eigrp stub
In the following example, the eigrp stub command is issued with the connected and static
keywords to configure the router as a stub that advertises connected and static routes
(sending summary routes will not be permitted):
router eigrp 1
network 10.0.0.0
eigrp stub connected static
In the following example, the eigrp stub command is issued with the receive-only keyword to
configure the router as a receive-only neighbor (Connected, summary, and static routes will
not be sent):
router eigrp 1
network 10.0.0.0 eigrp
eigrp stub receive-only

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