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Finding IP Addresses of Devices connected to a switch

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  • 1.  Finding IP Addresses of Devices connected to a switch

    Posted Jul 26, 2021 11:26 AM

    I have a few HPE 1920-48G Switch JG927A and 1920S 48G -JL382A in the network. How can i find the ip address of devices connected on each port of these switches. Going through the forums suggested me a few commands including

     show lldp info remote-device
    show cdp neighbors detail

    I am unable to see the show command on the 1920-48G Switch JG927A  model. Enabling the _cmdline-mode on command does not help either. 

    Any help on this would be appreciated. 

     


    #1920
    #1920S


  • 2.  RE: Finding IP Addresses of Devices connected to a switch

    EMPLOYEE
    Posted Jul 26, 2021 11:57 AM

    Hello  itisok4me,

    You may try:

    display arp

    In the command line. Note it will work if layer 3 traffic is sent to the devices like ping or the switches are default gateways for the devices.

    Hope this helps!



  • 3.  RE: Finding IP Addresses of Devices connected to a switch

    Posted Jul 27, 2021 06:06 AM

    Thank you. This works a treat on 1920 model. 

    Is there a similar way to find the ip on devices connected on the 1920s. 



  • 4.  RE: Finding IP Addresses of Devices connected to a switch

    EMPLOYEE
    Posted Jul 27, 2021 07:21 AM

    Hello @itisok4me ,

    For 1920s switch, you can refer 'LLDP Remote Device Summary' on pg.104 into below link:

    https://support.hpe.com/hpesc/public/docDisplay?docId=a00003478en_us

     

    Thanks!



  • 5.  RE: Finding IP Addresses of Devices connected to a switch

    Posted Jul 27, 2021 12:45 PM

    sh arp



  • 6.  RE: Finding IP Addresses of Devices connected to a switch

    EMPLOYEE
    Posted Jul 26, 2021 12:04 PM

    Hello,

    You have to enable LLDP globally  

    Network > LLDP. and Click the Global Setup tab

    You can refer pg.213 and 214 from below user guide:

    https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=c04463799

     

    Thanks!