118 Chapter 4: Scalable EIGRP
Scenario Answers
The answers provided in this section are not necessarily the only possible answers to the questions.
The questions are designed to test your knowledge and to give practical exercise in certain key
areas. This section is intended to test and exercise skills and concepts detailed in the body of this
chapter.
If your answer is different, ask yourself whether it follows the tenets explained in the answers
provided. Your answer is correct not if it matches the solution provided in the book, but rather if
it has included the principles of design laid out in the chapter.
If you do not get the correct answer, refer back to the text and review the subject tested. Be certain
to also review your notes on the question to ensure that you understand the principles of the
subject.
Scenario 4-1 Answers
1.
What needs to be done in addition to solve the problems caused by EIGRP? State the
configuration commands necessary to activate this solution on Router A.
The WAN is a Frame Relay cloud, and Router A is the hub in the hub-and-spoke
configuration. Each VC is 56 kbps.
In addition to readdressing the network, summarization would limit the query range of the
routers. This would prevent the routes in the topology table being SIA, which seriously affects
the performance of the network.
The commands required are as follows:
RouterA(config)# rr
rr
oo
oo
uu
uu
tt
tt
ee
ee
rr
rr
ee
ee
ii
ii
gg
gg
rr
rr
pp
pp
66
66
33
33
RouterA(config-router)#
nn
nn
oo
oo
aa
aa
uu
uu
tt
tt
oo
oo
--
--
ss
ss
uu
uu
mm
mm
mm
mm
aa
aa
rr
rr
yy
yy
RouterA(config-router)# nn
nn
ee
ee
tt
tt
ww
ww
oo
oo
rr
rr
kk
kk
11
11
00
00
..
..
00
00
..
..
00
00
..
..
00
00
RouterA(config-router)# ii
ii
nn
nn
tt
tt
ee
ee
rr
rr
ff
ff
aa
aa
cc
cc
ee
ee
ss
ss
ee
ee
rr
rr
ii
ii
aa
aa
ll
ll
00
00
RouterA(config-if)#
ii
ii
pp
pp
ss
ss
uu
uu
mm
mm
mm
mm
aa
aa
rr
rr
yy
yy
--
--
aa
aa
dd
dd
dd
dd
rr
rr
ee
ee
ss
ss
ss
ss
ee
ee
ii
ii
gg
gg
rr
rr
pp
pp
66
66
33
33
11
11
00
00
..
..
11
11
..
..
00
00
..
..
00
00
22
22
55
55
55
55
..
..
22
22
55
55
55
55
..
..
00
00
..
..
00
00
2.
Give the commands to configure Router A for EIGRP over this NBMA cloud.
The configuration on Router A is as follows:
RouterA(config)# ii
ii
nn
nn
tt
tt
ee
ee
rr
rr
ff
ff
aa
aa
cc
cc
ee
ee
ss
ss
ee
ee
rr
rr
ii
ii
aa
aa
ll
ll
00
00
RouterA(config-if)# ff
ff
rr
rr
aa
aa
mm
mm
ee
ee
--
--
rr
rr
ee
ee
ll
ll
aa
aa
yy
yy
ee
ee
nn
nn
cc
cc
aa
aa
pp
pp
ss
ss
uu
uu
ll
ll
aa
aa
tt
tt
ii
ii
oo
oo
nn
nn
RouterA(config-if)#
bb
bb
aa
aa
nn
nn
dd
dd
ww
ww
ii
ii
dd
dd
tt
tt
hh
hh
11
11
77
77
88
88

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