本帖最后由 宅男女神 于 2015-11-14 21:33 编辑 : V% w; C1 \* w* r( A! d& n+ s
2 K& ^& H8 E$ d/ ?& `EIGRP Troubleshooting5 \( u# i: a6 d8 U
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/ {/ @' S, ]5 l3 R/ K# x3 G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。
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Question 1
( g. W8 {8 O: b! K4 NThe 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?, f! d4 K5 e1 S7 N+ Y T
A. The interfaces are shutdown, so they are not being advertised. & r5 D% z' l* J. k, J1 g& f$ r
B. R4 has been incorrectly configured to be in another AS, so it does not peer with R5. / @% b n! w0 q4 f/ B$ c$ e
C. Automatic summarization is enabled, so only the 10.0.0.0 network is displayed.
4 e; g4 j' z) _( ^# {" tD. The loopback addresses haven’t been advertised, and the network command is missing on R4.
5 I) I Z: y1 u x! W/ g* L+ W题库里给的答案是B (AS号不同) B7 `5 H, g1 @9 Z6 m; `( ]
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$ i* o6 a! U: `- M) v
Question 2
! K' N% ~2 f$ ZWhich path does traffic take from R1 to R5? 5 v0 u5 K" {9 t7 ^* t j8 O
A. The traffic goes through R2.
. l6 `7 `' j5 u3 T+ Y# V0 n" {B. The traffic goes through R3.
3 B+ d* _3 L& p z hC. The traffic is equally load-balanced over R2 and R3.
: Z6 r0 l8 C8 i1 D9 xD. The traffic is unequally load-balanced over R2 and R3.
" w' f# q# ?( |1 g Y2 ]题库中,在R1上show ip route,结果是R2
B% ?4 l- h( ?3 |在考试中查看到R2,R3这两条的路径都是等值的,所以选C
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Question 3
- P! J% I N) mRouter R6 does not form an EIGRP neighbor relationship correctly with router R1. What is the cause for this misconfiguration?
( P! V+ p& r$ p) u k2 zA. The K values mismatch. v4 G! o! D7 V: Q0 R: y2 H
B. The AS does not match.
, z9 ]1 E# v! zC. The network command is missing.' T9 y, O+ y& B& P& L3 a
D. The passive-interface command is enabled.
# h% |7 @; Y. B; n/ w, H题库是选C(R6没有宣告网段): b, a' j3 t6 a8 ]
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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( o0 V% _7 r2 G3 Z% M& O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- [4 d, l9 F1 T5 i+ ~; f; B
更改K值命令:Router(config)#router eigrp 100
: @# }& q- s" N x1 A$ xRouter(config-router)#metric weights 1 1 1 0 1 1
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" K! n: R- C4 P4 T( Psh run 结果:
+ e) W3 N% X7 Y; R/ j( krouter eigrp 100
F/ l- F C# d6 smetric weights 0 1 1 0 1 1: n8 _6 z1 W/ s% i% A
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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/ r% ?) x- T) X: @6 t' y0 l
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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?
* `4 s$ j8 ]; ]5 t3 Q" Y7 G7 N0 eA. The network statement is missing on R5. / G+ R# l2 K+ N0 `
B. The loopback interface is shut down on R5. t2 T3 p: B7 [6 H0 R( j- }
C. The network statement is missing on R1. 5 H3 a5 M/ }5 G
D. The IP address that is configured on the Lo1 interface on R5 is) m* _6 J+ y6 V
D. The IP address that is configured on the Lo1 interface on R5 is incorrect.
b3 J) v& C2 {" Q5 E- K题库答案是C,(R1没有将10.1.1.1宣告)+ c1 k$ h+ O% _4 k, r
考试的答案是R5没有10.5.5.55宣告进EIGRP,选A
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