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- 2014-10-6
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累计签到:1 天 连续签到:0 天 [LV.20]漫游旅程
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4金币
一级路由器(WhiteYY):192.168.1.222一级子网 192.168.1.0/24$ o5 k8 n: O" O% s2 w6 D
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二级路由器(BlueYY):192.168.99.1/192.168.1.199
6 R! j2 m/ w+ h7 h/ Y& O二级子网 192.168.99.0/24& k1 f* p& a ? Z" r ~; S
二级子网中PC: 192.168.99.119* j8 k& d3 j- s
% i4 }5 }/ k5 M' t8 v. a6 C# i J# T故障现象:从PC可以ping通WhiteYY,但是从WhiteYY无法ping通PC
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【诊断操作如下】5 r% W3 T+ k' v n% ^! K
0;BlueYY: /home/root[BlueYY /home/root]# ping 192.168.1.222 可以通: s( `1 _9 @5 T. F8 X* ^
PING 192.168.1.222 (192.168.1.222): 56 data bytes1 Z4 K. t; J) k! b6 |
64 bytes from 192.168.1.222: seq=0 ttl=64 time=1.633 ms
& Z5 L+ ~- o- T0 u& ]64 bytes from 192.168.1.222: seq=1 ttl=64 time=1.333 ms- g1 x d" ^5 b' k) m' B7 k
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0;WhiteYY: /home/root[WhiteYY /home/root]# ping 192.168.99.1 可以通
: G" B- Q8 j& P7 J9 ?PING 192.168.99.1 (192.168.99.1): 56 data bytes
+ K: }0 D3 Y% R64 bytes from 192.168.99.1: seq=0 ttl=64 time=1.407 ms
5 Z$ J! B4 h$ K( |/ g8 r64 bytes from 192.168.99.1: seq=1 ttl=64 time=2.176 ms
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--- 192.168.99.1 ping statistics ---
: j) Q0 R& C' v9 w) t2 packets transmitted, 2 packets received, 0% packet loss# m1 F; W# b6 b; H$ A/ {; S
round-trip min/avg/max = 1.407/1.791/2.176 ms
0 x: Z, l! X: C; B2 v0;WhiteYY: /home/root[WhiteYY /home/root]# ping 192.168.99.119 不能通
5 D& w" D/ b' @1 @) WPING 192.168.99.119 (192.168.99.119): 56 data bytes
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1 y& ]# c4 Q: D4 o9 @4 |4 A3 Y0 k& e; w. }
【路由表打印如下】
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) q7 X2 N& g+ L% f1 P0;BlueYY: /home/root[BlueYY /home/root]# route h: ]" H! |9 G
Kernel IP routing table
3 _0 @0 [% _/ S& U( a+ u) ]8 g7 \Destination Gateway Genmask Flags Metric Ref Use Iface8 |" V: \. P! y) @$ x
default 192.168.1.222 0.0.0.0 UG 1 0 0 apcli0
2 m$ v$ G% w2 g% n+ Y* e127.0.0.0 * 255.0.0.0 U 0 0 0 lo
$ z9 Y& v2 Y* m7 ?% Y" ?' _: w192.168.1.0 * 255.255.255.0 U 0 0 0 apcli0$ }" r% {/ ]) w7 S8 Z
192.168.99.0 * 255.255.255.0 U 0 0 0 br0
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0;WhiteYY: /home/root[WhiteYY /home/root]# route/ j! V; K& F1 `' Y
Kernel IP routing table) c6 a% |9 b; Y+ ~( q
Destination Gateway Genmask Flags Metric Ref Use Iface0 _. j( ?' _: ^% W: ~/ ]
default 112.95.24.1 0.0.0.0 UG 1 0 0 ppp0
9 y9 r( d- t0 C% ^& o0 x1 k$ w4 \112.95.24.1 * 255.255.255.255 UH 0 0 0 ppp0 a$ ~( K+ x5 P9 l U6 c
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
- P/ D- E- `; O; p6 n4 S192.168.1.0 * 255.255.255.0 U 0 0 0 br0; ]- l4 J$ e( {
192.168.88.0 BlackYY 255.255.255.0 UG 0 0 0 br0
1 d' r/ o* S: {0 i- {192.168.99.0 BlueYY 255.255.255.0 UG 0 0 0 br0
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