R1#ping .3+ d) @. D0 J4 S+ L; W
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Type escape sequence to abort.
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Sending 5, 100-byte ICMP Echos to .3, timeout is 2 seconds:
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* C8 i; K4 e1 S: }& h" u, N, [7 B !!!!!
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+ X2 e Z' C+ J2 A Success rate is 100 percent (5/5), round-trip min/avg/max = ms
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R1#show ip route
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+ e' X& o. o0 S" s Default gateway is 112.1.1.22 E1 z8 P: z B* A' u* {
5 J; L- G$ h/ F Host Gateway Last Use Total Uses Interface* P; W( k" q' O
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.3 112.1.1.3 0:00 8 Ethernet0! ~0 m( b$ {7 G, y I
: m# D' K& D/ B; Z$ j 这个重定向是基于主机地址的,即针对每一个主机地址,都会单独做重定向,而不是一个网段,因为在ping的ICMP报文里,目的地址并没有携带掩码信息,让R1 ping R3的环回口德各个地址之后:+ ]' Y5 j! a7 Z: k( ?( b
' Y5 W4 l# P7 ^8 c0 q) s R1#show ip route( e9 v1 A0 x: F! s' U @( R( f
$ B1 x' j" D# V, U, ] Default gateway is 112.1.1.2
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Host Gateway Last Use Total Uses Interface7 p. m- y \( Z
) h; X& X' Q, O6 t- I .3 112.1.1.3 0:02 8 Ethernet0 E& w) K, o! r& a% _0 R# L
2 |4 y4 w# H! } .2 112.1.1.3 0:00 8 Ethernet00 ]4 ?) t! Z' ?9 B+ s4 C
! i2 o. i+ R `4 U .1 112.1.1.3 0:00 8 Ethernet04 i7 w4 a& U; \" N& A# w
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.4 112.1.1.3 0:00 8 Ethernet0 |