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助理工程师
 
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发表于 2018-9-28 12:07:06
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so , 2018.9.05 has a different answer, C, DHCP issue. Which one is correct? I don't think the question any differently.
8 _' A* ?$ r8 d2 z6 M: T f5 L! u. K- D
% [! r; r% @9 J6 N- T: e
R5 configuration :-8 o# f8 q2 L q2 _
int gig0/0
}/ k% c( X+ d8 m. l+ `( Bip address dhcp+ l. s9 D$ [! o6 X7 E
This interface not getting dhcp ip address from R4. So even though OSPF configuration was like 0.0.0.0) v" X4 E- g/ ^3 v2 ?- ^1 R5 o
0.0.0.0 area 0 , because this interface does not get correct ip address from DHCP it can’t participate in
5 U+ |6 P; _5 Z) A- B2 H% YOSPF.
9 N& f( l w1 m& c/ yR4 configuration :-
. c! Y/ P& Y" B+ M5 Qip dhcp exlude address; Y& H8 U9 M& d! P
ip dhcp pool ine
( |# @5 x- y1 J$ [" {: mnetwork x.x.x.x x.x.x.x
$ o2 ?. v. }% d# ~i think default router command was missing here . not sure
e8 |' s( c- o' A8 k" J/ Fbut
& P* @* P+ Z6 h [3 DInt gig0/0: m& n# X% r+ N y8 Y g% `' I
ip address dhcp .
+ T5 {5 ~/ U; S( W) uThis interface on R4 should have ip address configured on it instead of ” ip address dhcp ” . Hence its not% h4 w# N9 h [, Z7 m" ^9 R4 F
able to provide dhcp lease address to R5.
$ B( O% E j F# @) @' {R4 also had ospf configured as network 0.0.0.0 0.0.0.0 area 0. So all interface can participate if they are
! s7 l/ L0 j5 I. ^. xup and if they have ip address.
. E; f# a1 A; {/ P7 ]* H8 y4 SBut because R5 interface connected to R4 could not obtail correct dhcp ip address from R4 due to DHCP" {9 \/ k8 n! m) Z
issue they wont form ospf neighborship.
& x6 R! N$ {. R. J( `0 Y3 L9 aSo correct answer is DHCP issue between R5 & R4. |
213#
2018-9-28 12:07:06
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