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How can I find an IP address for unknown equipment?

asked 2020-04-07 23:46:03 +0000

rmayaya gravatar image

updated 2020-04-08 00:36:01 +0000

Guy Harris gravatar image

Conected ZyXEL 300 Prestige 300 to found his IP adress, I got :

Ethernet II, Src: ZyxelCom_44:f4:94 (00:a0:c5:44:f4:94), Dst: Broadcast (ff:ff:ff:ff:ff:ff)
    Destination: Broadcast (ff:ff:ff:ff:ff:ff)
        Address: Broadcast (ff:ff:ff:ff:ff:ff)
        .... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default)
        .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)
    Source: ZyxelCom_44:f4:94 (00:a0:c5:44:f4:94)
        Address: ZyxelCom_44:f4:94 (00:a0:c5:44:f4:94)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: ARP (0x0806)
    Padding: 2d533035434c4639056c6f63616c0000ff00
Address Resolution Protocol (ARP Announcement)
    Hardware type: Ethernet (1)
    Protocol type: IPv4 (0x0800)
    Hardware size: 6
    Protocol size: 4
    Opcode: request (1)
    [Is gratuitous: True]
    [Is announcement: True]
    Sender MAC address: ZyxelCom_44:f4:94 (00:a0:c5:44:f4:94)
    Sender IP address: 192.168.1.254 (192.168.1.254)
    Target MAC address: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Target IP address: 192.168.1.254 (192.168.1.254)

BUT NOT The IP , only the name ZyxelCom_44:f4:94 (00:a0:c5:44:f4:94), How can I do to found the real Adress , Please ? From Richard Mayaya , tel 00243810328182 Best regards

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Is this not it:

Sender IP address: 192.168.1.254 (192.168.1.254)
Chuckc gravatar imageChuckc ( 2020-04-08 00:10:19 +0000 )edit

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answered 2020-04-08 00:37:36 +0000

Guy Harris gravatar image

updated 2020-04-08 18:07:37 +0000

@bubbasnmp is correct.

This packet is, as Wireshark says, an "ARP announcement"; it is sent out by the ZyxelCom device to announce that it has the IP address 192.168.1.254.

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This IP adress is of my computer , PC, I need to Know the ZyXEL IP adress as I can communicate with him. The repport : Source: ZyxelCom_44:f4:94 (00:a0:c5:44:f4:94) does give me any information about the IP i am lookin for !

Bests regards Richard

rmayaya gravatar imagermayaya ( 2020-04-08 12:26:06 +0000 )edit

If that IP address is somehow assigned to the network interface of your computer than you'll have to change that to something else in order to communicate with the ZyxelCom device, because it announced it uses it as its IP address.

Jaap gravatar imageJaap ( 2020-04-08 17:58:50 +0000 )edit

This IP adress is of my computer , PC, I need to Know the ZyXEL IP adress as I can communicate with him.

And it's also the IP address of the ZyXEL, according to the packet that the ZyXEL device sent out, which is probably the cause of the problem you're presumably trying to solve by connecting to the ZyXEL device. :-)

Don't assume it's impossible to have more than one device on a network with the same IP address. Devices can be misconfigured if they've been manually configured. It's obviously not correct to have more than one device on a network with the same IP address (unless there's some flavor of load balancing), but "not correct" and "technically impossible" aren't the same thing.

Guy Harris gravatar imageGuy Harris ( 2020-04-08 18:07:15 +0000 )edit

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Asked: 2020-04-07 23:46:03 +0000

Seen: 252 times

Last updated: Apr 08