整个升级过程业务无任何中断，具体过程如下：
MDS9134# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (c) 2002-2009, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software are covered under the GNU Public
License. A copy of the license is available at
http://www.gnu.org/licenses/gpl.html.
Software
BIOS: version 1.0.15
loader: version N/A
kickstart: version 4.2(1a)
system: version 4.2(1a)
BIOS compile time: 07/16/08
kickstart image file is: bootflash:/m9100-s2ek9-kickstart-mz.4.2.1a.bin
kickstart compile time: 8/10/2009 19:00:00 [09/24/2009 09:51:13]
system image file is: bootflash:/m9100-s2ek9-mz.4.2.1a.bin
system compile time: 8/10/2009 19:00:00 [09/24/2009 11:40:47]
Hardware
cisco MDS UROS 9134 FC (1 Slot) Chassis (“1/2/4 10 Gbps FC/Supervisor-2”)
Motorola, e500v2 with 1036308 kB of memory.
Processor Board ID JAF1326AALD
Device name: MDS9134
bootflash: 509544 kB
Kernel uptime is 80 day(s), 19 hour(s), 32 minute(s), 16 second(s)
Last reset
Reason: Unknown
System version: 4.2(1a)
Service:
MDS9134# show install all impact system tftp://192.168.1.2/m9100-s2ek9-mz.4.2.3.bin kickstart tftp://192.168.1.2/m9100-s2ek9-kickstart-mz.4.2.3.bin
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