显示Cisco Catalyst 19系列交换机系统软件版本号方法如下：
netadmin_sw# show version
Cisco Catalyst 1900/2820 Enterprise Edition Software
Version V8.01.01 written from 171.068.229.225
Copyright (c) Cisco Systems，Inc. 1993-1998
Wg_sw_c uptime is 15day(s) 21hour(s) 53minute(s) 11second(s)
Cisco Catalyst 1900 (486sxl)processor with 2048K/1024K bytes of memory
Hardware board revision is 5
Upgrade Status:No configuration upload/download is in progress
27 Fixed Ethernet/IEEE 802.3 interface(s)
Base Ethernet Address:00-50-BD-73-E2-C0
其中，V8.01.01是系统软件的版本号，Enterprise Edition Software代表企业版。Cisco 1900 系列交换机支持两种版本：标准版和企业版。企业版有增强功能；标准版不支持命令行接口配置。

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