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中级工程师
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发表于 2012-8-15 15:24:53
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下面的可以参考一下,拓扑和IP与你规划差不多,这是R2的配置,其中我没有使用R5,我分别在R3和R4上分别开启了环回口,即3.3.3.3和4.4.4.4,
+ O, q1 ^. G5 finterface Ethernet1/08 B' A! A! R3 w1 H! S
ip address 12.1.1.2 255.255.255.03 y p( v, Z$ S$ \" j
ip nat inside
% c# U' T! G" I! `" @ half-duplex
$ k8 w; h* q4 h% V& T! $ Z0 d* S9 X, O1 W
interface Ethernet1/1+ G+ d w9 B$ H, p
ip address 23.1.1.2 255.255.255.0" A" ]+ p* W. E( w6 M
ip nat outside
& Y+ I( T- A4 l$ t half-duplex: R7 j' `; h l( |2 ?
!
+ J3 R6 Z5 C: _% [ Yinterface Ethernet1/2( j/ s% `0 l" [+ ]0 }
ip address 24.1.1.2 255.255.255.0
0 t* E' \/ s* r ip nat outside: u3 T2 w) v# D% m
half-duplex
4 B0 V0 n$ m$ [5 x3 D! g0 d) L!) l$ w! J: y) o% T+ S! N: [( H e
4 z2 p/ B2 {- z) x8 e8 t0 k2 O& t; T2 v
ip nat inside source route-map 23 interface Ethernet1/1 overload
1 b" j7 c6 w, B1 k/ a4 v( ^3 zip nat inside source route-map 24 interface Ethernet1/2 overload
- E) T& `8 I7 }+ F0 Eip http server
* @# R6 }/ L' F8 D& \no ip http secure-server: v& s# c- B+ r6 i% E
ip classless
, j# G/ O3 c9 h! D4 t# l# C J! Nip route 0.0.0.0 0.0.0.0 23.1.1.3) m: A& C0 a" `0 z8 D5 z s
ip route 0.0.0.0 0.0.0.0 24.1.1.4: I9 Q% y% }* w$ v/ o: d
!
( D P( f; A% B/ W6 D6 x0 j
7 q5 w$ q5 k7 J+ zaccess-list 123 permit ip any 23.0.0.0 0.255.255.255
9 {6 S, b" R2 p' ` h$ F, q! faccess-list 123 permit ip any 3.0.0.0 0.255.255.255
% _- n' v( Q( H o: y, ~9 x# ?7 W, paccess-list 124 permit ip any 24.0.0.0 0.255.255.2552 P# r3 B! D1 A+ `: B5 K
access-list 124 permit ip any 4.0.0.0 0.255.255.255$ Q/ s1 {7 P+ x7 W5 X( N; J
!
+ ?6 Z$ @4 [' v6 o; Q8 W U, Y4 Eroute-map 23 permit 10# F* a* u9 s5 r; D* t" |; ]) [4 I( D
match ip address 123& y% I$ U/ V% L
set ip default next-hop 23.1.1.31 S- H% {7 ~: }! j) ?
!8 i# x9 v* V. f
route-map 24 permit 108 W Z2 G9 M# l" }; @
match ip address 124
4 N# D, x L1 Q8 j' G L set ip default next-hop 24.1.1.4
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+ l& L& u: r3 e这样能符合你的要求,但是存在一个问题,即如果(假设)电信(R2-R3)的断了,那么用联通(R2-R4)的链路将访问不到电信的设备!
5 {0 }3 G; u) z* D
5 ^7 E/ t- L: j1 ]- o6 Q其实我还在想链路优先的问题,即访问的电信的设备,优先电信链路。如果电信链路down了,那么走联通链路!0 t' z% P+ {# u
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12#
2012-8-15 15:24:53
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