本帖最后由 宅男女神 于 2015-11-14 21:33 编辑
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" l# C4 Y' q: y1 `* Y! u% k! f( aEIGRP Troubleshooting
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6 M0 W6 z2 _* }+ l/ m( q题目拓扑、选项跟题库相同,但是几个路由器给出的配置跟题库不同。" _7 s& \6 G6 _8 `" r: T) V
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Question 1 + ~. O2 C" P& N$ M5 b
The loopback interfaces on R4 with the IP addresses of 10.4.4.4/32,10.4.4.5/32 and 10.4.4.6/32 are not appearing in the routing table of R5. Why are the interfaces missing?
8 W7 C5 b4 n h+ m, SA. The interfaces are shutdown, so they are not being advertised.
" U3 Q6 K7 [( a$ NB. R4 has been incorrectly configured to be in another AS, so it does not peer with R5. ( O" A, C- Y) V3 h5 G
C. Automatic summarization is enabled, so only the 10.0.0.0 network is displayed.5 i1 @+ [+ O7 N" a
D. The loopback addresses haven’t been advertised, and the network command is missing on R4.8 F3 n" Y! m4 y# s4 O6 V
题库里给的答案是B (AS号不同)/ P4 }/ j0 t6 ]# k) s5 G, q) P
在考试中show run查到的并不是区域号不同,而是R4没有宣告它的环回地址,也就是选D
4 [" I2 q& L/ t( q4 O& v Question 2
' {5 G! b9 f( Q3 ^7 _% QWhich path does traffic take from R1 to R5? 3 V) Y. C' P6 N% [
A. The traffic goes through R2.* r% D8 Y( n; k. M7 x% [
B. The traffic goes through R3.) [+ S1 u3 {- N. n
C. The traffic is equally load-balanced over R2 and R3.2 z6 Z' l, s) `8 F( P' {% n
D. The traffic is unequally load-balanced over R2 and R3.
- w0 d4 q- R" O; G' j5 t: i! M题库中,在R1上show ip route,结果是R2: K4 |2 x% x2 S8 K- B
在考试中查看到R2,R3这两条的路径都是等值的,所以选C* P0 `9 h3 F, Y) @
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Question 3 , k ]% E) ~+ Q
Router R6 does not form an EIGRP neighbor relationship correctly with router R1. What is the cause for this misconfiguration?
9 s0 H/ n$ V K& f0 vA. The K values mismatch.
/ c0 P% C8 V" ?) d" `. NB. The AS does not match.
1 {; M4 L% r6 D/ ~$ e, IC. The network command is missing.5 q7 W# T E4 C, m: `! Q3 | M
D. The passive-interface command is enabled.
+ F0 j* S8 w6 Z, }5 k [题库是选C(R6没有宣告网段)9 g6 y, ?9 j* ]1 {+ o- x2 R/ V
考试所查到的并不是这个原因,而是选项A!"The K values mismatch."
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4 J. m% h+ `) `4 F! D这个题目有点无语,因为我在PT中做测试,一旦更改了metric值,那么在show run的时候是会有显示相关metric的. C7 r. o$ t4 D. j' Y0 S
更改K值命令:Router(config)#router eigrp 100
7 z! F8 F) `% yRouter(config-router)#metric weights 1 1 1 0 1 1# R% ?* u' W6 V1 \
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sh run 结果:
6 Y/ `1 r) ?0 k; d2 }router eigrp 1008 N- _6 u- N+ G6 o& A% p
metric weights 0 1 1 0 1 1. @- a7 k/ W% z) N$ F2 I! I
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但是在考试的时候,show run并没有显示mertric值,只能通过show ip protocols 来查看K值,所以这个命令大家一定要记住用6 j$ @0 @: G2 w& D' p8 o
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Question 4- R1#ping 10.5.5.55 source 10.1.1.1
- Type escape sequence to abort.
- Sending 5, 100-byte ICMP Echos to 10.5.5.55, timeout is 2 seconds:
- Packet sent with a source address of 10.1.1.1
- . . . . .
- Success rate is 0 percent (0/5)
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R1为什么ping不通R5?5 }; u1 b- e: h1 F
A. The network statement is missing on R5. 5 I! B6 }$ ~+ c g+ ~
B. The loopback interface is shut down on R5.1 \; s! ?3 ~3 E* d5 l; C: l
C. The network statement is missing on R1. * _6 z* C0 q0 y% w' ]( y; R8 m) {: n
D. The IP address that is configured on the Lo1 interface on R5 is
" A& ?; D& a# RD. The IP address that is configured on the Lo1 interface on R5 is incorrect.. @7 ~, } F1 v, d T! y; M% Q+ k3 O
题库答案是C,(R1没有将10.1.1.1宣告)
1 R- z- r5 R, Z' W% L9 |% [考试的答案是R5没有10.5.5.55宣告进EIGRP,选A7 y0 r) E. j& ^
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