CCNA 2 - Capitulo 17.4

CCNA 2 - Capitulo 17.4

1. DEVICES IN A SMALL NETWORK

   • CISCO DISCOVERY PROTOCOL - CDP
     • HOW TO ENABLE / DISABLE GLOBALLY ?
       • ROUTER(CONFIG)# CDP RUN
       • ROUTER(CONFIG-IF)#CDP ENABLE
     • HOW TO ENABLE / DISABLE INTERFACES ?
       • ROUTER(CONFIG)# NO CDP RUN
       • ROUTER(CONFIG-IF)#NO CDP ENABLE
     • WHATS IS CISCO DISCOVERY PROTOCOL (CDP)
       • CISCO PROPRIETARY PROTOCOL
       • DATA LINK LAYERk
       • TWO OR MORE CISCO NETWORK DEVICES
         • AUTOMATICALLY CDP
           • NEIGHBORING CISCO DEVICES
             • REGADLESS OF WHICH LAYER 3 PROTOCOL OR SUITES ARE RUNNING
       • EXCHANGES HARDWARE AND SOFTWARE
         • DEVICE INFORMATION WHICH
           • DIRECLY CONNECTED CDP NEIGHBOORS
       • PROVIDE FOLLOWING INFORMATION
         • DEVICE IDENTIFIERS
           • THE CONFIGURED HOST NAME OF
             • A SWITCH, ROUTER, OR OTHER DEVICE
         • ADDRESS LIST UP TO ONE NETWORK LAYER ADDRESS
           • FOR EACH PROTOCOL SUPPORTED
         • PORT CAPABILITIES LIST
           • FOR EXAMPLE, WHETHER A SPECIFIC DEVICE IS
             • A LAYER 2 SWITCH OR A LAYER 3 SWITCH
         • PLATAFORM
           • THE HARDWARE PLATFORM OF THE DEVICE-FOR
             • EXAMPLE, A CISCO 1841 SERIES ROUTER.
       • CDP ADVERTISEMENTS
         • CAN ALSO BEA SECURITY RISK
         • CDP ADVERTISEMENTS ONLY
           • INTERFACES THAT ARE CONNECTING TO OTHER INFRAESTRUCTURE CISCO DEVICES
         • SHOULD BE DISABLE
           • ON USER FACING PORTS
       • #SHOW CDP NEIGHBORS
         • DIRECLTY CONNECTED
       • #SHOW CDP NEIGHBORS DETAIL
         • REVEALS THE IP ADDRESS OF A NEIGHBORING DEVICE