No IP listed for a lot of clients

GiuseppeR
GiuseppeR Posts: 380  Master Member
Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Engineer Level 1 - Nebula First Comment Friend Collector
edited May 22 in Nebula

Hello everyone,

I'm used to setup devices in DHCP inside my networks, a part from some important items that have reserved IPs.

When I explore my Clients' list in Nebula I see a lot of NICs without an assigned IP:

immagine.png

Anyway I'm sure, to give you an example, that the second to last in the list you see is the x.x.x.125 inside my network but Nebula does not display that value.

How can I fix that?

All Replies

  • Zyxel_Judy
    Zyxel_Judy Posts: 2,191  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula

    Hi @GiuseppeR ,

    To better support you, please enable Zyxel support and provide us with the name of your Nebula organization/site here or via the private message by clinking to my account > Message.

  • GiuseppeR
    GiuseppeR Posts: 380  Master Member
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Engineer Level 1 - Nebula First Comment Friend Collector

    Hi @Zyxel_Judy

    I sent you a PM with details, thanks a lot

  • Zyxel_Judy
    Zyxel_Judy Posts: 2,191  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula

    Hi @GiuseppeR ,

    In Nebula client list, IPv4 address are collected from LLDP information, Nebula Access point or Nebula Security gateway in the site.

    The reason your Nebula Switch doesn't show some client's IP address is that clients don't support LLDP. To resolve this, please ensure that the devices connected to the switch support LLDP and LLDP include IP.

    To verify LLDP support on your devices, please perform a packet capture and check the information as follows.

    image.png
  • GiuseppeR
    GiuseppeR Posts: 380  Master Member
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Engineer Level 1 - Nebula First Comment Friend Collector

    Hi @Zyxel_Judy

    on that site I have a firewall (Flex500) and 3 switches:

    immagine.png

    It seems strange to me that is not possible to have a complete list of IPs that I can retrieve using "Advance IP Scanner".

    In that specific ORG I have also 2 NASes:

    immagine.png

    The red one has 2 NICs, but I can see only one IP.

    The blu one has 4 NICs, but I can see only one IP.

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