言归正传，OSPF和RIP都配置好后执行重发布/ l7 Z3 C+ T8 C3 A/ H
然后很自然地产生了次优路径：- s' Q% P" a+ |; s0 v; f
发布后由于OSPF的管理距离小于RIP，所以R2上到192.168.6.0网段的下一跳指向了R4而不是R1，为了解决这个问题，配置了发布列表，R2和R3配置如下：
8 e# @% @6 S& n) XR2:/ |, J$ Q# o# M" ?
router ospf 13 ]) r% A! J ^1 ]0 E
log-adjacency-changes
. G' r" ]3 T) T! [$ _$ uredistribute rip subnets
& Y% l9 v: f2 m/ e: {network 192.168.3.0 0.0.0.255 area 0
3 P5 w$ p, `# C$ b+ e6 fdistribute-list 2 in$ G+ U, ?# D$ F4 s; O; E
!
7 K, [) L2 F8 j! N6 nrouter rip
8 C/ L$ h7 @6 }- m7 h5 @version 2; u7 t& n3 M [ B1 d7 n) q
redistribute ospf 1 metric 5
7 b/ q2 F' P# K; h' y0 onetwork 192.168.2.0
@8 u$ P3 ~. C- k; y6 Cdistribute-list 1 in
8 ]2 n4 l1 I+ M. eno auto-summary
) d8 P; O+ l% d g1 R!7 x J0 Q* C, R! h
ip http server
: U7 A2 P) k" D$ e( C% l!: }9 j! P& K$ S, j
!0 Z k) I I: h; w
!" ~. j' I J# R; A. K* H* Z
access-list 1 permit 192.168.1.0 0.0.0.255
) d1 {6 A! p# G9 Vaccess-list 1 permit 192.168.6.0 0.0.0.255) U: @4 A& `5 U8 r# y
access-list 2 permit 192.168.4.0 0.0.0.2556 P" s5 @: F) m& @5 x; h
access-list 2 permit 192.168.5.0 0.0.0.255
# k8 W- [0 @; k" ~; |4 M4 d
! u% b6 Z0 R* h7 FR3:
4 m3 Y9 o6 B; O/ Urouter ospf 1/ Z3 w- T; m4 a7 n+ f
log-adjacency-changes* v5 [3 R i: O- W! F7 Y# x$ p0 I
redistribute rip subnets
" j1 j4 w) K' y$ p) c I8 Enetwork 192.168.5.0 0.0.0.255 area 0
$ D, Z7 i& m+ j: L! Pdistribute-list 2 in
b% K9 X; a2 z( V' y6 D' p# Y!# X }# g5 t; F7 [6 d) m7 R" e
router rip
/ @8 q& B3 a7 x" ^2 U- {0 qversion 2+ x' `- Q' S2 ^
redistribute ospf 1 metric 5
8 H2 p' g& s/ m" r+ R3 r+ O: d0 I9 W6 B" u2 Gnetwork 192.168.6.0
0 q3 ^+ P6 I+ Z! {0 L$ M+ \! Qdistribute-list 1 in: _7 W! z3 @4 k1 n. v
no auto-summary: J( w* ~" W. p. s1 y4 U
!
4 O% A4 F# G( q& Wip http server
% w k. b: }# C; {* x!. W" c1 w1 Z3 x, A* p
!
" Z+ s( H# Y! t3 F0 O!
* S( I+ D/ g7 C3 qaccess-list 1 permit 192.168.2.0 0.0.0.2551 ~# ^2 P7 C7 Y5 d7 z1 s
access-list 1 permit 192.168.1.0 0.0.0.255$ h+ m8 F) B" ?" ?2 e! Z5 H6 ]# U
access-list 2 permit 192.168.3.0 0.0.0.255
. E. [7 Q% _: y- |access-list 2 permit 192.168.4.0 0.0.0.255
& @+ ^9 h5 q% m, }3 h2 k+ R/ y* p- n: D& g4 ?
我理解的是只有访问控制列表1允许的地址才能发布进入RIP进程，列表2允许的地址可以发布进入ospf进程，不明白的是为什么R1、R4和R5还能学到不允许的地址？不是在重发布路由器那就给拦住了吗？- a2 f' j& q; ^+ D0 k7 l9 W. r1 \
R1:% }9 @3 o& s/ n: V) v
R1#sh ip rou* `2 F6 P6 X0 g( N1 J
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
0 `, e* ~% w* m) c D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area ! q( G7 ^* m; T, M( H0 w
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 26 t& s' b% H$ m8 K
E1 - OSPF external type 1, E2 - OSPF external type 2( U y/ ^2 Q) Q6 [% \" k8 W4 B& Y$ X
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
% z; K8 V$ m! z& w ia - IS-IS inter area, * - candidate default, U - per-user static route
" ` k( s$ |: _ o - ODR, P - periodic downloaded static route
; s1 p# s$ ^6 j2 Q5 W N& k3 S' _2 C$ m, p% {
Gateway of last resort is not set
. i2 [8 u1 L' x1 x
9 Z; ~- M$ ^+ m4 E: I, MR 192.168.4.0/24 [120/5] via 192.168.6.2, 00:00:02, FastEthernet1/0
4 c3 H( z: n! h* p0 ^ [120/5] via 192.168.2.2, 00:02:20, FastEthernet0/0" `. x1 |' k7 y4 p* _8 }' H; S
R 192.168.5.0/24 [120/5] via 192.168.6.2, 00:00:02, FastEthernet1/0
1 t) `' y8 ^/ q$ u' N; d [120/5] via 192.168.2.2, 00:02:20, FastEthernet0/0
* D. O' r; w2 E* u) sC 192.168.6.0/24 is directly connected, FastEthernet1/0
/ g+ N! L, j, F: q' cC 192.168.1.0/24 is directly connected, Loopback04 }1 d0 D( c8 p- c
C 192.168.2.0/24 is directly connected, FastEthernet0/0
B" v& v% E+ c% n: v6 ?1 |R 192.168.3.0/24 [120/5] via 192.168.6.2, 00:00:02, FastEthernet1/0
9 p& y. c6 A, w7 J9 ? [120/5] via 192.168.2.2, 00:02:20, FastEthernet0/05 x0 i% R- _0 Y# U: ]
$ l* c/ y \$ ^4 ~: i
R4:
/ A9 N8 L, ^& |" [) ]9 l) KR4#sh ip rou
9 E9 @4 Y5 K; ~7 S K2 a/ c% lCodes: C - connected, S - static, R - RIP, M - mobile, B - BGP! N6 j" c' w# L) l
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
% i1 ~" g9 ^6 u! t. K/ ]! y N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2* @$ i4 N, Z d0 u2 C6 C
E1 - OSPF external type 1, E2 - OSPF external type 2
: O7 J9 f6 W5 r. w, H- k8 e i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
4 W, o! e# T; A/ L ia - IS-IS inter area, * - candidate default, U - per-user static route5 q! V: ]8 Y5 y7 v. z2 C8 d
o - ODR, P - periodic downloaded static route
9 V$ R& t0 L8 T% ]
( a! K+ @+ W- f W% Y+ A, dGateway of last resort is not set
1 V; w% g0 N- e- h
3 y' r% U# q# W5 r3 a. uC 192.168.4.0/24 is directly connected, FastEthernet0/0 s" W* F8 `0 g+ s4 \
O 192.168.5.0/24 [110/65] via 192.168.4.2, 00:16:40, FastEthernet0/0
6 |- p w, F7 P# UO E2 192.168.6.0/24 [110/20] via 192.168.3.1, 00:05:59, Serial1/0
) X5 g5 V P1 CO E2 192.168.1.0/24 [110/20] via 192.168.3.1, 00:05:59, Serial1/01 f7 z6 g7 o% O9 Y
O E2 192.168.2.0/24 [110/20] via 192.168.3.1, 00:05:59, Serial1/0+ V# _- I" ^& `* i B
C 192.168.3.0/24 is directly connected, Serial1/0
0 r; v# c5 G7 y! N# ~% S3 ?% f3 r# n3 t# E& c g$ n2 b0 Z
R5:
9 j# o7 k: Y& E5 z3 t: N6 h# J6 b# dR5#sh ip rou
1 h) s! x* K7 ]' f% D# z @Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP- d2 l6 k$ S, J% p8 L* I/ l; b- D
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
" ~8 L) c8 Z% s6 S N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
' U' A5 T N9 U' t E1 - OSPF external type 1, E2 - OSPF external type 2% T. E d. D/ b$ D! W- _! ]5 P) A
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
" j1 z& h& ]3 s, ^3 E- c ia - IS-IS inter area, * - candidate default, U - per-user static route& c, L% K) u |) H" s" }
o - ODR, P - periodic downloaded static route9 Y6 c+ |' D' L- d! {4 z, `
4 ~# a! H# ]' M' aGateway of last resort is not set# G+ s" `/ Q. v6 R0 |3 s
K' @2 i w: O& n9 h% ]C 192.168.4.0/24 is directly connected, FastEthernet0/0
; ]( L8 p; w! aC 192.168.5.0/24 is directly connected, Serial1/0
( I; e6 m6 N) RO E2 192.168.6.0/24 [110/20] via 192.168.5.1, 00:26:47, Serial1/0
6 n. T5 d4 t/ m6 H5 Y. xO E2 192.168.1.0/24 [110/20] via 192.168.5.1, 00:26:48, Serial1/0, ^! r. `8 N) y5 x& N2 q
O E2 192.168.2.0/24 [110/20] via 192.168.5.1, 00:26:48, Serial1/0( {" ]) c! u6 Y3 d
O 192.168.3.0/24 [110/65] via 192.168.4.1, 00:33:54, FastEthernet0/0
3 T/ F* a) S% R! q$ R% _/ o$ p8 M6 }8 \; h
求高手解答下我的疑问.... |
|
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