现有2台Brocade VDX 6740,OS版本是4.1.3a. 为解决某个问题，尝试升级到5.0.2.
OS升级包是从Brocade技术支持那获得，话说自己去下载的话好像很麻烦的样子，
反正他们有技术支持，让他们传的话，省时省力。
不多说了，以下是升级操作：
1.查看目前版本，
B6740-1# show version rbridge-id all
rbridge-id 1
Network Operating System Software
Network Operating System Version: 4.1.3
Copyright (c) 1995-2014 Brocade Communications Systems, Inc.
Firmware name: 4.1.3a
Build Time: 23:11:34 Dec 18, 2014
Install Time: 19:26:26 Mar 27, 2015
Kernel: 2.6.34.6
BootProm: 1.0.1
Control Processor: e500mc with 4096 MB of memory
Appl Primary/Secondary Versions
------------------------------------------
NOS 4.1.3a
4.1.3a
rbridge-id 2
Network Operating System Software
Network Operating System Version: 4.1.3
Copyright (c) 1995-2014 Brocade Communications Systems, Inc.
Firmware name: 4.1.3a
Build Time: 23:11:34 Dec 18, 2014
Install Time: 19:11:02 Mar 27, 2015
Kernel: 2.6.34.6
BootProm: 1.0.1
Control Processor: e500mc with 4096 MB of memory
Appl Primary/Secondary Versions
------------------------------------------
NOS 4.1.3a
4.1.3a
B6740-1#
2. 备份目前的配置到U盘。
#usb on
B6740-1# copy running-config usb://config.old.vcs
2015/08/05-07:17:03, [DCM-1113], 2017,, INFO, B6740-Fabric-Chassis, Running configuration file has been uploaded uccessfully to USB.
B6740-1# usb dir
Rbridge-id: 1
support\ 0B 2014 Mar 31 13:39
firmwarekey\ 0B 2014 Mar 31 13:39
firmware\ 0B 2014 Mar 31 13:39
config\ 30kB 2015 Aug 05 07:17
config.old.vcs 30kB 2015 Aug 05 07:17
Available space on usbstorage 99%
B6740-1# usb off
2015/08/05-07:17:34, [RAS-3004], 2018,, INFO, B6740-Fabric-Chassis, USB storage device disabled.
Rbridge-id: 1
USB storage disabled
B6740-1#
3.把新的OS拷到U盘上， 必须说明一点：brocade交换机识别U盘，是个很诡异的事情，如果不想出乱子，最后还是用Brocade送的U盘，而且不要把U盘的文件夹随便删除。
把OS拷贝到U盘的\firmware下。
4. 通过U盘升级
#usb on
#firmware download usb directory nos5.0.2
Performing system sanity check...
2015/08/05-08:37:03, [LOG-1000], 2565,, INFO, B6740-Fabric-Chassis, Previous message has repeated 1 times.
This command will cause a cold/disruptive reboot and will require that existing telnet, secure telnet or SSH sessions be restarted.
Do you want to continue? [y/n]:
敲下y,等它跑完就可以了。
如果你的环境像我一样有配置VCS的话，那每一台的交换机都需要升级。
升级完的结果：
B6740-1# show version briefrbridge-id all
rbridge-id 1
Slot Name Primary/SecondaryVersions Status
---------------------------------------------------------------------------
SW/0 NOS 5.0.2 ACTIVE*
5.0.2
SW/1 NOS 5.0.2 STANDBY
5.0.2
rbridge-id 2
Slot Name Primary/SecondaryVersions Status
---------------------------------------------------------------------------
SW/0 NOS 5.0.2 ACTIVE*
5.0.2
SW/1 NOS 5.0.2 STANDBY
5.0.2
比较遗憾的是，升级后并没有解决我的问题，烦...
本文出自 “想？不想！” 博客，谢绝转载！
原文地址：http://cfgege.blog.51cto.com/2603211/1682177
