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cisco4912的硬件问题

我的设备现在是光千交换机cisco4219的7 |2 N) i! h2 E7 z0 @! \
一开机器出现下面提示:5 I1 [6 e, _7 t7 Q
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Warning: monitor nvram area is corrupt ... using default values                                                               3 J) I8 ]. F0 @, `( H5 p5 ^
environment checksum in NVRAM failed                                    & h4 o& u! t' C

5 n/ V, x0 |% L/ m0 K6 Xenvironment checksum in NVRAM failed                                    
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environment checksum in NVRAM failed                                    
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environment checksum in NVRAM failed                                    # e) P, Q9 M+ f# L& E2 s2 H! O
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environment checksum in NVRAM failed/ U! g+ P8 r0 l, W

* G6 n( y/ Z' ?3 Q; Cenvironment checksum in NVRAM failed
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% B4 ^! T0 G/ f/ Yenvironment checksum in NVRAM failed
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- S+ }: M5 A$ h5 x% g3 u/ Zenvironment checksum in NVRAM failed5 L7 [6 Q# U0 J  n1 G

# R5 E% x  I; g; yenvironment checksum in NVRAM failed- t, s7 u$ k2 \  x& _

! p5 F% C, e& p  p3 ienvironment checksum in NVRAM failed
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  P0 W" v* A" u0:00.595046: Please set TftpServer variable to do tftp downloads7 }$ N; `' U9 J+ o* j) r# f
0:00.596884: ig0: 00:05:9a:ce:17:fe is 128.129.130.131, L& p# Z$ s! k) L
0:00.597625: netmask: 132.133.134.1359 o4 H9 i/ A0 A2 F  n6 z& P2 T
0:00.598061: broadcast: 136.137.138.139
' A& l% T  ]3 _" r6 B1 e0:00.598538: gateway: 127.248.0.0, k! h  R. r" `  \# |
WS-X4912G bootrom version 5.4(1), built on 2000.04.04 10:48:54
& N$ w; [- `% v2 @H/W Revisions:    Fin: 2    Tooth: 3    Board: 1
4 }3 F6 _: s1 _) V7 \8 ISupervisor MAC addresses: 00:05:9a:ce:14:00 through 00:05:9a:ce:17:ff (1024 addr% m5 Z( D! m: |% j
esses)
/ v2 t$ P) p" D! K1 ]Installed memory: 32 MB& n$ s! X/ k# J2 O# _" ^% _
Testing LEDs.... done!
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6 B* q7 }2 i7 F, ^) ~: D: M安键盘没反映,谁能帮我看看是怎么回事啊?
4 U% [3 ^$ ?/ n4 b8 `+ ]各位考虑一下啦" n/ Z: P& w: B; [
帮帮小弟!
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