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?

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?

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 stubcommand 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. Thereceive-onlykeyword 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-onlykeyword. If
any of these three keywords is used individually with the eigrp stubcommand, connected and
summary routes will not be sent automatically.
The connectedkeyword 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 connectedcommand under the EIGRP process. This
option is enabled by default.
The statickeyword 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 summarykeyword 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 commandenabled. 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

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
Reference:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/products_feature_guide09186a0080087
026.html



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