Finding hub ip address when unknown.

disneyjoe7

And before you ask secure hub DHDP off, unable to reset hub.

nadams

use an IP scanning program to scan all possible IP addresses within the given range?

Something like Angry IP Scanner - http://www.angryziber.com/w/Home

Erik Tracy

disneyjoe7 wrote: »

And before you ask secure hub DHDP off, unable to reset hub.

From Windows, you can do a Start -> Run, then from the dialog box type in cmd to open a command shell (DOS level).

From the prompt:
Type "ipconfig /all"

This will tell you the ip address of your computer, the subnet mask, the default router/gateway, your dns server ip address, and some other info as well.

phuz

Hubs don't have IP addresses.

McLoki

If it is for a home router like a linksys - try 192.168.1.1 Most seem to default to this address.....

Good luck in your search.

Michael

Edit - if that does not work try the x.x.x.1 address of your computers IP address. (your router should be in the same subnet) I.E. - if your computers IP address is 192.168.5.23 - try the IP address of 192.168.5.1 for your router.....

disneyjoe7

Erik Tracy wrote: »

From Windows, you can do a Start -> Run, then from the dialog box type in cmd to open a command shell (DOS level).

From the prompt:
Type "ipconfig /all"

This will tell you the ip address of your computer, the subnet mask, the default router/gateway, your dns server ip address, and some other info as well.

The trouble I had was the manual ip computer is wrong. I can't do DHDP input ipconfig gives me 0.0.0.0 if the manual setup is used I can't ping the hub #.

mmadden28

The typical defaults are 192.168.1.1 and 192.168.0.1, unless they are changed manually (as I typically do)
Just FYI its not DHDP, it's DHCP (Dynamic Host Configuration Protocol).

What is the make and model of the router? Do you see a small pinhole or button on the back-such as for a reset switch?
Did you try removing power to the router?

If you can't get an address via DHCP from the router then you won't be able to ping or scan anything.
You can try to force the DHCP again manually type: ipconfig /renew.

Otherwise you will have to set your IP address manually. Try setting your own IP to 192.168.0.200 (or something other than .1) and 192.168.1.200 (subnet/netmask 255.255.255.0) and then try pinging the router.

Oh and how did you get to this point? Or did you just acquire this thing?

disneyjoe7

This is a work computer which was replaced an other computer which died and never had an IP network cable. This computer had a IP manual input but it's got to be wrong as I can't ping anything. I ask my boss if he know what the hub is, if not I going to have to call someone. I can tell you it's not 192.168.nothing.

mmadden28

What's the make and model of the 'hub'. What else is it connected to?

disneyjoe7

Not sure and I'm not sure I can say


But I say it's not just 1 part.

McLoki

If it is a work computer and you have to manually input the IP address, I would let someone from your IT staff mess with it. You can look at another computer on the network and figure out what they are doing (by looking at another computers IP address and subnet mask) and you will know the range of IP addresses they are expecting, but if you guess at an IP address that is already in use - you could knock that other device off the network. If it is another workstation you can always say sorry - if it is a server people will be pissed.

For a home computer there are a few things you can try and if they work - great, if they don't - no harm no foul.

For a business network - I would not feel comfortable suggesting the "poke and hope" method of computing.

Best of luck,

Michael

mmadden28

Ditto ^^^
If it's a work computer and its at work, deal with your IT staff. Too many variables in a business network environment. Not to mention the potential for violating your companies security policies. I am the IT staff for networking at my facility and I've seen more than my fair share of users mussing things up on thier own when a quick call to me would've fixed it.

If it's at home-we need more info.
If it's truly a hub/or unmanaged switch, then it won't have an IP address. If its actually a combo router/switch, then it should.
The first step is to figure out what you have. Then its figure out if its all connected to each other correctly (the right cables go to the right places and you have link lights, etc.)
Then its trouble shoot further.

John30_30

disneyjoe7 wrote: »

This is a work computer which was replaced an other computer which died and never had an IP network cable. This computer had a IP manual input but it's got to be wrong as I can't ping anything. I ask my boss if he know what the hub is, if not I going to have to call someone. I can tell you it's not 192.168.nothing.

Like the guys say, this is one for your I.T. people. Your intranet could be 192.168.x.x, but not necessarily. It could be 10.x.x.x or 172.16.x.x.

First thing your guys need to do is make sure the network cable goes to a live port on the work switch. Now it's just a possibility that your network is using DHCP, while that P.C. used to be manually configured. So you'd have to make the change of the TCP/IP properties of your Ethernet card LAN Connection to Obtain an IP address automatically- are you lost yet?
let them do it.

disneyjoe7

Ok thanks guys. I usually can get a computer too work ok, but this was a different hub. No other computers on it right now to compare too.

McLoki

Ok, just to play devils advocate here. If you connect a single computer to a hub with nothing else connected to it - why do you need an IP address at all? What are you trying to connect to? If it is truely a hub, as stated, it will not have an IP address (since there is no real management built into most hubs and they do not need to manage an IP stack).

I guess we need to know what you are trying to accomplish.

Michael

disneyjoe7

I have to wait too see if my boss comes back with any info. But basically to connect to network for software downloads for muxes.

Kris Siegel

phuz wrote: »

Hubs don't have IP addresses.

I came into this thread to make the exact same comment

disneyjoe7

Perhaps hub is the wrong word switch? Computers call it "Gateway" you can ping it if it's right, I can't.

phuz

You're trying to find the IP address of the default gateway of a LAN segment? But the segment only has 1 PC connected to it, and nothing else?

You're talking about a PC, but also a switch or gateway, right? The PC can't ping anything with a manual gateway configured?

This switch or gateway has to be connected to something. Do you have physical access to it? What is the brand/make/model of the device? Can you get the hardware address of it? Is there a console port you can connect to? Can you access another switch or router that is connected to it, then check the ARP table or just inverse ARP the device to get the IP?

mmadden28

Dam-I had a response typed up-not sure what happened to it.

Anyway just FYI-Most desktop hubs and switches in fact don't have IP addresses, but manageble business class hubs and switches can (not that nybody should still be using a hub unless they have a specific purpose for it). Not that that is likely to be the issue here.

I find that most people don't know the difference bewteen a hub, a switch or a combo router/switch/wifi, etc. So when somebody says "hub" I always take it with a grain of salt (whet the heck does that cliche mean anyway) until I have more info.

mmadden28

phuz wrote: »

You're trying to find the IP address of the default gateway of a LAN segment? But the segment only has 1 PC connected to it, and nothing else?

You're talking about a PC, but also a switch or gateway, right? The PC can't ping anything with a manual gateway configured?

This switch or gateway has to be connected to something. Do you have physical access to it? What is the brand/make/model of the device? Can you get the hardware address of it? Is there a console port you can connect to? Can you access another switch or router that is connected to it, then check the ARP table or just inverse ARP the device to get the IP?

I'm going to guess DJ won't know what ARP is. (No offense DJ)


DisneyJoe, essentially here's the scoop:
Lets assume you have a good connection from the PC to the assumed switch. Lets assume the switch is unmanaged.
If the switch is then connected (uplink) to the main network, then its likely that a DHCP server exists that can assign an IP address to any computers connected to the switch. Its possible as well that the DHCP server is secured enough to only issue IPs to known hardware.

If the switch is managed and is actually a router, like you would have at home, then it would have its own DHCP server built in and it should be issuing the IP addresses.

If the switch is not connected to another network and is unmanaged, and this is the desired topology, then you will have to set the IP addresses manually on any devices connected to the switch (standalone LAN) if you need to use IP. If you're using Windows XP, the OS may automaticallyy assign a non routeable IP address (internal to your LAN use)for you, if your PC is set to use DHCP and a DHCP server is not available. This may be enough to at least allow the computers to talk to each other.

But again, you really shouldn't do much else until you talk to your boss.

peace

phuz

You're probably right and I don't mean any offense either. Just trying to wrap my head around this one as I love a challenge. Too many variables here though to really be able to help much.

I'd say talk to your IT department.

disneyjoe7

Ok my boss give me an email, its just computer IP sheet for another office... Not mine :rolleyes:

But he tried. :eek:

I need to get this computer work for some download stuff, I'm going to make a test IP cord to another switch that I can figure out.