发信人: gsta()
整理人: sglzx(2001-08-20 22:08:44), 站内信件
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Cisco Hardware Woes
By Steven J. Vaughan-Nichols, ZDNet
Dec 30, 1999
Cisco Systems' Catalyst 5000 small to midsize campus-network switches
are extremely popular. Some of them have Cisco's WS-X5012--48-port 10B
ase-T--boards running in them. As Cisco is acknowledging via a quiet r
ecall campaign, a few of these boards are breaking down badly.
Specifically, an unknown number of these multiport 10Base-T modules ha
ve a manufacturing defect. It's not just any old flaw; the effected bo
ards can short out without any warning.
What's worse is that not only will that knock out the 5000 family swit
ch, but also--as Cisco itself is saying in a recall note--the defect "
will cause the power supplies to go into over-current shutdown, cuttin
g off power to the system. The short may also cause smoke to be genera
ted, but will not produce fire or sparks."
These failures also can wreck the switch backplane turning a network's
core into the computer room's most expensive work of art.
Dealing With Defects
Fortunately, only WS-X5012 products within the following serial number
ranges may have the defect:
9880340 To 9883950
10120340 To 10125399
10172043 To 10175339
10290340 To 10295339
10510340 To 10515339
In particular, the WS-X5012A is not affected by this problem.
To deal with these defective boards, Cisco is offering support and a f
ree replacement through a product recall. For more on handling this pr
oblem, head over to Cisco Connection Online's (CCO) LAN Switches Field
Notice section and look at "Field Notice: Specific WS-X5012 line card
s have the potential to short." To access CCO, you must be a Cisco emp
loyee, reseller, contractor, direct customer or Cisco Certified Intern
etworking Engineer.
While Cisco has not publicly announced the problem, discovered in mid-
December, it is recommending that all resellers contact customers usin
g these boards as soon as possible and arrange for immediate replaceme
nts.
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※ 来源:．月光软件站 http://www.moon-soft.com．[FROM: 202.104.81.244]
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