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Most Popular
Browser Plugins
Integrate Cisco-related searches and tools into your browser. Visit the Browser Plugins page to get plugins for popular Cisco tools and searches.
Bug Toolkit
Search for software bugs based on version and feature sets.
Cisco Notification Service
Receive important Cisco product and technology information (via email or RSS feed). Visit the Cisco Notification Service page to subscribe.
For more information,
watch the video. 
Command Lookup Tool
Look up a detailed description for a particular Cisco IOS, Catalyst, or PIX/ASA command.
Download Software
Get the latest updates, patches, and releases of Cisco software.
Error Message Decoder
Look up explanations for console error message strings listed in the Cisco Software System Messages guide.
Output Interpreter
Receive instant troubleshooting analysis and course of action for your router, switch, or PIX device using collected show command output.
Software Advisor 
Choose appropriate software for your network device by matching software features to Cisco IOS and CatOS releases, comparing Cisco IOS releases, or determining which software releases support your hardware.
SNMP Object Navigator
Translate SNMP object identifiers (OIDs) into object names, search object names, and descriptions, browse OID trees, and download MIB files.
