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[CCNA] CCNA640-802:EIGRP实验真题详解

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发表于 2012-8-3 20:28:11 | 显示全部楼层 |阅读模式
LAB: EIGRP
0 B1 h# {6 M, q6 z; {/ ]& ?Question#2 w7 u1 G5 @* f) f
After adding RTR_2 router, no routing updates are being exchanged between RTR_1 and the new location. All other inter connectivity and internet access for the existing locations of the company are working properly.% R) O2 P7 [0 T2 q2 u, l7 \+ Y' f
The task is to identify the fault(s) and correct the router configuration to provide full connectivity between the routers.7 {  a* g7 T$ K7 J
Access to the router CLI can be gained by clicking on the appropriate host.
2 r: A5 p$ M) V% O" m: c; ~All passwords on all routers are cisco .1 ^+ [& A: T0 O/ J3 T
IP addresses are listed in the chart below.
7 D8 M4 }& ]. z. |( M- h% V2 t% j
RTR_A#show run
& B4 F' }9 B- |4 x" r0 ?# j1 L!
2 |/ Y; [  B. p, W5 Q!* b  A! L; U" c5 W
interface FastEthernet0/0
3 M! m% V6 W# gip address 192.168.60.97 255.255.255.240# q- [3 H+ D) Z5 t  P
!6 z6 m0 Z' F/ V: @" o
interface FastEthernet0/1! S% L, z# z: k" Q3 C3 L- p; G
ip address 192.168.60.113 255.255.255.240; m7 M) U! x9 c; R4 m! t) {- i
!6 H# g5 I! W2 u0 h
interface Serial0/05 U3 b; _2 l+ _: u
ip address 192.168.36.14 255.255.255.252
6 g3 p; V8 h$ K! d1 uclockrate 640006 s* L1 V/ ~! o" X
!
# _# S% n  M8 F6 f( l, Q% urouter eigrp 212
0 c5 x5 e, @0 V# j' @+ G: o3 c6 Fnetwork 192.168.36.0
8 \3 }1 s7 f$ X* J9 C, c3 O% M; Snetwork 192.168.60.0
( n& i' M0 \( [9 M  i: E% T4 D4 Eno auto-summary
# }# r, ]) ^7 z  W. b7 v7 Z!
* y2 l. G4 b' `! C3 `RTR_A#show ip route
8 Y! w+ l8 h/ \0 p192.168.36.0/30 is subnetted, 1 subnets# m7 D! X: a/ R: n1 p; }
C 192.168.36.12 is directly connected, Serial 0/0% {( K1 S* Z# d- e" Q
192.168.60.0/24 is variably subnetted, 5 subnets, 2 masks  k) ~# Q3 o- P' G/ Y
C 192.168.60.96/28 is directly connected, FastEthernet0/0( f- q5 J5 ^0 E, i
C 192.168.60.112/28 is directly connected, FastEthernet0/1& ]# ^& w- Q0 K, D! L# w
D 192.168.60.128/28 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0( W5 Z0 s+ m4 I  v2 o
D 192.168.60.144/28 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/08 t9 J1 N% Q! r0 E
D 192.168.60.24/30 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0
4 o" l3 F7 D9 z+ M6 o- v4 \3 ~D* 198.0.18.0 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0# w( k# w. h0 e, M. g# R% F9 q' f
, f- ^2 e7 u& `
RTR_2#show run- V. p0 b4 T/ a
!
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 楼主| 发表于 2012-8-3 20:28:12 | 显示全部楼层

CCNA640-802:EIGRP实验真题详解

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interface FastEthernet0/0
( c* V. G7 H6 h; P$ |. c  cip address 192.168.77.34 255.255.255.252
9 X3 b0 @/ J+ g8 C, X!
% X; l0 {- \3 d" y- n  |" i4 a: sinterface FastEthernet0/1
, d$ Q7 K. {/ z9 I9 H/ Cip address 192.168.60.65 255.255.255.240( `# b2 x* |0 h6 Q' b9 O0 n/ h) ^; }
!6 B5 o) g) y1 Q
interface FastEthernet1/0
% P- U, b0 v9 A+ fip address 192.168.60.81 255.255.255.240
, B" S1 t4 _9 Z4 u" a- M$ g2 S# b3 [!; e0 v- S3 u* A: H
!</p>router eigrp 22
6 _) k$ [9 N6 }# A/ C: pnetwork 192.168.77.0
, m  ]* s% p! ^5 m* O9 ?6 Lnetwork 192.168.60.0
" [" s' n( E8 J* {# n) U9 Q; Rno auto-summary1 w/ d. ^! L1 x, H8 d6 h' y) H
!
, I' b. u. R  E) l! I3 b  g( I0 ~$ pRTR_2#show ip route
  k, J* H4 O; N0 @4 {" y+ _192.168.60.0/28 is variably subnetted, 2 subnets
. }  W6 y, k, s3 t/ R/ kC 192.168.60.80 is directly connected, FastEthernet1/0
0 d" v8 Y& ^3 f, x( P6 vC 192.168.60.64 is directly connected, FastEthernet0/1
! v) H0 N' q0 t( d# t) e192.168.77.0/30 is subnetted, 1 subnets1 t* {: ^) p0 Z6 Z
C 192.168.77.32 is directly connected, FastEthernet0/01 Q% A1 Q+ d6 P. t" n0 Y6 m2 ]' z
RTR_B#show run
& e! }, X/ F. ]" K( T- n# x!5 |, L  V5 \8 d
interface FastEthernet0/00 A! }/ T/ P$ y, D9 ?6 g; a" F% ~
ip address 192.168.60.129 255.255.255.240  O, \9 i# I4 A( W$ C
!
1 D* i% [% b9 r4 _2 z$ }* b% F) Linterface FastEthernet0/1
( h4 p8 Z  H! x) X: v6 L) D# Lip address 192.168.60.145 255.255.255.240* D! N. c! C+ C. d
!9 `% [' B: g7 L$ B  ?" x+ u
interface Serial0/1
6 q: X6 l+ I+ t3 F' ^" z' eip address 192.168.60.26 255.255.255.252$ [( E: J3 t4 p: ?
!
$ ^9 Z0 _! x9 J8 ^% Qrouter eigrp 2120 h% n1 ~) B% Y3 }4 K+ e7 z( k
network 192.168.60.0! e+ ~9 q4 n* N. K/ X0 M
!+ H* R6 ?: Y& c( s1 f0 e
RTR_B#show ip route8 L" M7 f; X5 f" \
192.168.60.0/24 is variably subnetted, 5 subnets, 2 masks/ q, S: h) ?- {$ c
C 192.168.60.24/30 is directly connected, Serial0/19 B$ d$ l& V3 s, W% o
C 192.168.60.128/28 is directly connected, FastEthernet0/0
& p  ?8 W  X0 \* r7 v+ {C 192.168.60.144/28 is directly connected, FastEthernet0/1
: v0 j2 Q# ], ?( ?D 192.168.60.96/28 [ 90/21026560 ] via 192.168.60.25, 00:00:57, Serial 0/1
- p' ~$ ]- b7 u0 g) `0 w4 mD 192.168.60.112/28 [ 90/21026560 ] via 192.168.60.25, 00:00:57, Serial 0/1
1 c' l! _% I5 C192.168.36.0/30 is subnetted, 1 subnets" P# h8 O3 i1 G- Z. B
D 192.168.36.12 [ 90/21026560 ] via 192.168.60.25, 00:00:57, Serial 0/1
" S- u# v2 j. l2 q: G( yD* 198.0.18.0 [ 90/21026560 ] via 192.168.60.25, 00:00:57, Serial 0/1& Z# v- G2 K2 P9 V  w' g" M, {
RTR_1#show run7 L( I' E" k7 {5 |2 R8 y
!
( O8 u9 |( t. I: @& `$ \. e- X!
) A9 N8 ^; k7 ~* Einterface FastEthernet0/0
- G- n; m% X! |2 `2 J$ eip address 192.168.77.33 255.255.255.252" V  U& K/ E  H$ b$ b
!
. a. S" r! K/ }6 V8 g+ c6 vinterface Serial1/0
* a% `- |; ]5 m0 U% Iip address 198.0.18.6 255.255.255.0  G% p$ A$ z$ ?8 \2 ^
!
) h# [' P4 y+ K7 q!
# J( |& ?) \2 i2 jinterface Serial0/00 o& ~; F2 m% u7 Z. g
ip address 192.168.36.13 255.255.255.252
+ ~9 p; Y9 }& E2 D5 a* J. @) kclockrate 64000
" [  {5 A6 q7 E' L0 Z2 [  w) {!
( X- G: G0 Y; Jinterface Serial0/1# e+ h; C# k* [& g* c, R& r
ip address 192.168.60.25 255.255.255.252
3 K0 X% Z$ w1 g% _$ L5 V! Mclockrate 64000. C+ O$ @1 I) {4 q  a3 D
!2 ]* m( R7 k: X- `. f/ ]) O
!2 E. L1 L% p) b/ ?+ j1 X
router eigrp 212
- p7 W9 u  o9 \* inetwork 192.168.36.0
9 |- O- w  ]6 \1 t" [8 a7 Fnetwork 192.168.60.0! ~: F: |! Y! }' J* E7 f; [
network 192.168.85.0
8 M4 y$ [2 A* N1 t  Jnetwork 198.0.18.0) |  T3 ]9 n! q% U) _1 v
no auto-summary
" @3 S  V: @9 _. F' ^5 j! 6 F3 @, c2 y  c" S9 z
ip classless
( R) B7 s& j1 Z* t  d: U% }. Sip default-network 198.0.18.0
0 M/ F( U$ Q! b. P' D' D1 V! Pip route 0.0.0.0 0.0.0.0 198.0.18.5( P4 P! z5 D. ~& s. Z! M% W3 Q
ip http server
1 e0 u7 z4 f6 q+ H7 m8 o8 tRTR_1#show ip route
+ {* c' S) o4 Z5 O192.168.36.0/30 is subnetted, 1 subnets4 c9 J* s& n& y" ^
C 192.168.36.12 is directly connected, Serial 0/0
% K+ Z/ m' b- ~; ~: l* U192.168.60.0/24 is variably subnetted, 5 subnets, 2 masks4 c2 t* Z, E  K% n0 H
C 192.168.60.24/30 is directly connected, Serial0/12 m9 @* `1 q  w! \5 R3 D1 @
D 192.168.60.128/28 [ 90/21026560 ] via 192.168.60.26, 00:00:57, Serial 0/1
- z0 ~2 t' }, f+ i! C0 ZD 192.168.60.144/28 [ 90/21026560 ] via 192.168.60.26, 00:00:57, Serial 0/1 1 U) |$ n! B1 V  x$ `
D 192.168.60.96/28 [ 90/21026560 ] via 192.168.36.14, 00:00:57, Serial 0/0" Z# j$ S3 K; |. t4 V
192.168.77.0/30 is subnetted, 1 subnets3 Z# r" q6 ?1 z3 P" @
C 192.168.77.32 is directly connected, FastEthernet0/0- S: g, T1 ]4 d7 h4 O1 [  @
C 192.0.18.0/24 is directly connected, Serial 1/0
9 |/ S; T% V1 G" z3 w*S 0.0.0.0 via 198.0.18.5
2 b1 K7 }. t8 u+ r. @$ Q4 _8 ~Explanation:# b& H" H. C+ ?6 D
Step1:
$ B/ z4 K! \: l1 jIdentify the faults in configuration on RTR_1 and RTR_2. As the SIM specifies all other inter connectivity and internet access for the existing locations of the company are working properly. 1 H8 d7 v: d' z0 L7 [1 D
Routing Protocols used in the SIM is EIGRP with AS 212 as provided by exhibit.& l" y; `# j8 Y* S4 m
Faults Identified:; \# S: E. ~' k% L+ c4 Z
Wrong AS (EIGRP 22) provided at RTR_2 (New router) RTR_1 does not advertise the new network between RTR_1 and RTR_2 into EIGRP. We need to correct the above two configuration mistakes to have full connectivity5 {; _7 T  }$ H8 t& I2 y
Step2: Correcting the EIGRP AS to 2123 ~8 r1 `# J3 x! P; k# J
Wrong AS (EIGRP 22) provided at RTR_2 (New router)% i! O! |4 E) h" n
All routers that want to exchange routes within EIGRP needs to be in same Autonomous System.
/ s+ G5 i- d5 C" Q7 ]1 D4 ^* [Step 2.1:
8 P1 ]/ z2 P- BFirst we need to remove the current wrong EIGRP AS 22 from Router RTR_2
9 o, S: L* A! H- g6 u  ?, MClick on Host-F to get CLI of RTR_2
/ Y, ?8 J0 J" e; _4 z9 W& PRTR_2>enable. D$ m  T: h, m5 h: G" L2 X
Password : cisco (Provided by SIM Q )# x+ T% N- o: O: r. x
RTR_2#conf t+ X) {3 H% l! V! n( p
RTR_2(conf)#' b1 F' b  n+ N# v0 s% e. {
Step 2.2:
" t7 s8 z4 n/ R$ n$ T3 s/ C$ @Removing the wrong EIGRP routing process with AS 22
: n7 i2 G# ]  Q4 RRTR_2(conf)#no router eigrp 22
7 N# q6 |+ Y) D% tThe above statement removes all the EIGRP configuration configured for AS 22 .
4 f0 ~* h# Z1 q2 rStep 2.3:
2 D( l1 {( I) F7 S1 n9 V5 VAdding the correct EIGRP configuration
/ s7 w# x( W) W/ E9 q0 h( X- f, gStart the EIGRP routing process with AS 212
" E' ?9 q2 A0 ^! {  S0 lRTR_2(conf)#router eigrp 212
- e' L: h) [4 Z; Y4 ~Step 2.4:
3 y2 N/ b* W3 u( u/ UAdvertise the directly connected networks into EIGRP on RTR_2+ K- {2 T) \2 v
Fa 0/0 - 192.168.77.34
& Z( }) b7 I4 DFa 1/0 - 192.168.60.81
( Z7 O8 ?; w# g, ?% s; c1 \7 jFa 0/1 - 192.168.60.65& h6 R6 P7 c/ y
RTR_2(config-router)#network 192.168.60.0- i# i( B  z4 P( K/ |
RTR_2(config-router)#network 192.168.77.0% E/ F" L# U4 c/ X  A+ o8 \: ?  F
RTR_2(config-router)#no auto-summary% L7 U' @! C5 q+ g& W% r
RTR_2(config-router)#end# |% R% Y! k7 j$ z( _7 P7 V0 ^. ]
Step 2.5:, o, }( l; W5 e- ^% a$ S9 j
Important save the changes made to router RTR_28 h) g& t  R! p8 @" x: O$ c5 n
RTR_2#copy run start1 I7 q" e- V, f. R, g, p
Step 3:
" z* Q0 |6 U; X# wRTR_1 does not advertise the new network between RTR_1 and RTR_2 into EIGRP.( e3 v/ D( `0 p
Click on Host-G to get CLI of RTR_1: Q$ `5 C3 }4 u# P  ~2 a
The network 192.168.77.0 is used between RTR_1 Fa0/0 - RTR_2 Fa 0/0
& J: d% A6 x  ?+ e1 f6 _This network needs to be advertise into EIGRP routing process at RTR_1
& a. _& P; W( }9 l1 s3 Z" O+ mRTR_1>enable
4 `0 o8 p$ ~9 J5 A% HPassword : cisco (Provided by SIM Q )5 Z! F  u4 [  ^7 b
RTR_1#conf t
# T( g5 Q) g, G: H+ j0 k5 }RTR_1(conf)#' P( C4 E5 h9 P) u: m/ K* _
Step 3.1:3 Z7 T. p4 N. V  ~8 W' w# Z
Enter EIGRP routing process for AS 2127 p* h' X1 f5 C6 r9 O
RTR_1(conf)#router eigrp 212
5 D) P, }9 p; ^. WStep 3.2:$ M; v$ R! n) t5 j" V1 I7 a  C) m. A
The network 192.168.77.0 is used between RTR_1 Fa0/0 - RTR_2 Fa 0/0 . Advertise this network into EIGRP
5 e6 J1 A* p8 Y, Q8 R) jRTR_1(config-router)#network 192.168.77.0
9 e) P1 r/ t& ~0 L) Q& HRTR_1(config-router)#end
9 X4 Q( ~( p! w9 L3 S/ |" c- CStep 3.3:7 Y3 H6 f3 i& ]0 e; U' b
Important save the changes made to router RTR_1: I2 `1 l; w% P% m5 R5 P$ Q5 n
RTR_1#copy run start* E5 ^0 S' @% I
Verification:& _4 @. i, c  B. P: l8 ~) u7 d; x# l# M
From RTR_2 CLI
/ m3 t0 G* k6 ?, V; v/ w* Vping RTR_1 Serial 1/0 IP address 198.0.18.6
+ R. Y% X: J; j" d+ _2 }RTR_2#ping 198.0.18.6: h- N9 K/ G7 |% d$ p4 ^
!!!!!  e1 X5 `7 [. v- g9 Q
A successful ping shows the new RTR_2 will have full connectivity with other routers./ t4 @2 X* [- \/ `
Any Questions are welcomed!!!!!
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