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How to find an MAC Address of my neighbour in a network thro CMD using ARP or RARP protocols

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This is not an leagal activity sorry cant help it

Posted on Jul 29, 2010

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Why Cannot a Switch Forward Incoming Traffic from an Upstream Device That Performs an Active/Standby Switchover?


When an upstream device performs an active/standby switchover, its IP address remains unchanged, but its MAC address changes. The downstream switch(such as S2309TP-EI-AC) cannot detect the MAC address change in traffic, and cannot update ARP entries. Incoming traffic, therefore, cannot be forwarded. The aging time of ARP entries on the switch is 20 minutes. After 20 minutes, the switch learns ARP entries of the upstream device again, and the traffic can be forwarded. To shorten the service interruption period, set a shorter aging time for ARP entries. In V100R006 and later versions, run the mac-address update arp command to enable the switch to update ARP entries when the MAC addresses of upstream devices change, which shortens traffic interruption period (within seconds).

Jul 28, 2016 | Computers & Internet

1 Answer

Iomega mdhd 360 n


The following may help:

You can either use the management software: Iomega Discovery Tool Home : Read First
or
Instructions to Direct Connect to NAS:
Unplug the NAS from the router
Unplug the pc from the router (if the pc is wireless, disable wireless)
Using Ethernet Cable, plug the NAS directly into the pc with no other devices attached.
Restart the NAS and wait for it to boot COMPLETELY 100%
The NAS will request an address from the PC which will be an APIPA address (this is a 169. address)
Open up your Start Menu and type in CMD in the search bar and select the CMD program.
Type in "arp -a" in the cmd prompt
The first time you use the arp -a in a cmd prompt, it gives you the 169.x.x.x address of "The PC"
You may have to arp -a twice to get the NAS address.
The second time you use the arp -a I will get another APIPA address in the 169.x.x.x address
Take the new address and use it in the web browser just like normal to access the device

Mar 22, 2014 | Computers & Internet

1 Answer

When i open my internet it scroll very slow so i open my LAN connection using Realtek RTL8168D(P)/8111D(P)PCI-EGigabit Ethernet NIC and open its'properties and click the box repair and suddenly a...


Hi

The Address Resolution Protocol (ARP) is very crucial for TCP/IP network communication. If you begin to notice network connectivity problems such as particular web pages not loading or not being able to ping certain IP addresses then clearing your ARP cache is a good place to start.The TCP/IP ARP Command component provides the functionality to add, delete, or display the IP address for Media Access Control (MAC) address translation.

To flush/Delete the ARP cache in windows 7/Vista/XP/2000/Server 2003/2008 follow this procedure
Click on Start->Run-> type the following command click ok
netsh interface ip delete arpcache
Dynamic ARP cache entries update persist for 2-20 minutes depending on the system.
Windows 2003 Server = 10 minutes
Windows 2000 professional/Server = 10 minutes
Windows XP = 2 minutes
Solaris = 5 minutes
Delete IP address using arp command
arp -d <ip address>
Example
arp -d 10.1.1.2
Display arp table
arp -a
Add static entry to ARP table
arp -s <ip address> <mac address>
Example
arp -s 157.55.85.212 00-aa-00-62-c6-09

Jun 21, 2011 | Nvidia Computers & Internet

3 Answers

Where do I find mac adress


The MAC address is either printed on the label on the bottom of the router OR it can be obtained from the router's configuration setting.

Apr 06, 2011 | Computers & Internet

1 Answer

We forget the ip address for the MGMT port, we changed the default one


use arp .
find the mac address and then use arp to assign an ip address to the mac address . the you can enter the web front end using the ip address you assigned to the routers mac address and then find out or change your ip address. might not be any use to you

Mar 03, 2010 | IBM System Storage DS3400 Dual Controller...

1 Answer

How to know the MAC address of my infoprint . In the config menu I got one but contains only 5 groups


If the printer is configured and has got a TCP/IP address, you can get the MAC mapping from any Windows PC in the same network like this:

Start -> Run Command -> enter "CMD" and press Enter -> type the command, PING ip.addr.of.printer (enter) and then ARP -a ip.addr.of.printer (enter).

If your network's IP addresses are centrally managed, ask your system administrator if it's possible to temporarily assign a fixed IP address for diagnostic purposes, then assign that address to the printer and do as described above.

Oct 30, 2009 | IBM Infoprint 1622 Laser Printer

1 Answer

Pls. help us,how can we used land cord to connect printer konica 7035 to computer. we already down load a driver from internet . we try many times to check sa IP address and test print but still we cannt...


Using arp command (UNIX)
From UNIX you can use the arp command to assign the IP address to the network interface card.
Perform the following procedure:
1. Turn off the print controller and the main body printer.
2. Log in as superuser on a host on the same subnet as the network interface card. However, if
the server resides on another subnet, complete this procedure to store the IP address in the
network interface card.
3. Find the MAC address of the network interface card. The address is printed on the Status Page
each time you turn on the print controller and the main body printer.
4. Edit the hosts file (usually /etc/hosts) or use NIS or DIS to add IP address and node name of
the network interface card. See the network administrator for the IP address. For example, a
network interface card with a name of printfast and an IP address of 192.9.200.200 has the
entry:
192.9.200.200 printfast
5. Add an entry to the arp cache for IP address and Mac address of the network interface card,
as:
arp -s 192.9.200.200 0:40:c8:0:0:ff
RS6000 (AIX) requires the ether option after arp -s. For example:
arp -s ether 192.9.200.200 0:40:c8:0:0:ff
6. Check the print controller and the main body printer to see that the network interface card is connected
to the network. Turn on the print controller and the main body printer.
7. Send a ping command to the network interface card to verify it is running on the network, as
for example:
ping 192.9.200.200 or ping printfast
The network interface card will not respond to this ping command but it will read its IP address
from the packets.
8. Turn off the print controller and the main body printer and back on again and then send the
ping command again to verify that the network interface card obtained its IP address. A confirmation
message displays as:
192.9.200.200 is alive
9. Remove the entry from the arp cache using the following command. Specify the network
interface card either by its IP address or by its name, for example:
arp -d printfast
Konica Network Interface Card INSTRUCTION MANUAL 2-5
Chapter 2 Setting Up the Network Interface Card
Using MAP
By using MAP (Management Access Program) included the CD-ROM that comes with the network
interface card, you can automatically identify the network interface card on the network and set it up
for TCP/IP by using Web Utilities. To use this method to assign the IP address to the network interface
card, the following procedure should be performed on computers in advance:
• TCP/IP correctly configured
• IPX/SPX-compatible protocol installed
• MAP installed and MAP setup correctly executed
About how to set up TCP/IP and how to install IPX/SPX-compatible protocol, refer to Windows Help
menus for example. For MAP, refer to “Using MAP (Management Access Program)” in this chapter.
To change an IP address already assigned to a network interface card, you can not use the
arp command. Use Web Utilities instead. These methods also allow you to set up subnet
mask and default gateway, etc.
Using NIManage
Refer to “Chapter 7 AppleTalk Configuration”.
 Accessing Web Utilities
The network interface card is provided with an HTTP server having Web Utilities. By accessing this server,
you can change settings of the printing system. There are two ways to access Web Utilities, through a Web
Browser, either through Netscape Navigator, version 4.x or greater or through Internet Explorer, version 4.x
or greater.
• Use MAP to have the network interface card on the networks identified automatically, thereby accessing
Web Utilities.
• Use a Web Browser to type the IP address assigned to the network interface card, and thereby access
the Web Utilities. For example:
http://192.168.0.128/
If you designate the proxy setting in your Web Browser you cannot access the Web Utilities.
For more information see your network adminisrator.
Chapter 2 Setting Up the Network Interface Card
2-6 Konica Network Interface Card INSTRUCTION MANUAL
 Using MAP (Management Access Program)
A utility called MAP is provided on the CD-ROM that comes with the network interface card.
This program automatically identifies the network interface cards on the networks and lists them on Web
Browser screen. From this Web Browser list you can select a network interface card to change its settings
and control Web Utilities.

Aug 31, 2009 | Konica Minolta Office Equipment & Supplies

1 Answer

Duplicate/incorrect MAC addresses in the CAM table


This is from the Cajun P333R manual but it should be very similar if not identical.

Good Luck.

arp timeout Command
Use the arp timeout command to configure the amount of time that an entry
remains in the ARP cache. To restore the default value, 14400, use the no form of
this command.
The syntax for this command is: arp timeout <seconds>
The syntax for the no form of this command is: no arp timeout <seconds>
Examples:
To set the arp timeout to one hour:
Router(configure)# arp timeout 3600
To restore the default arp timeout:
Router(configure)# no arp timeout
ip-address IP address, in dotted decimal format, of the station
hardware-address 48-bit address of the local data link
seconds The amount of time, in seconds, that an entry
remains in the arp cache.

Nov 09, 2007 | Lucent Cajun P333T Networking Switch

2 Answers

NetPrint 1000


Hello everyone,

I've spent the past several hours getting my NetPrint print servers to work on my network & print from Windows XP.

Guess what? I've got the solution.

I have both the NetPrint 50 model and the NetPrint 1000 model. I only got the NetPrint 50 to work. I think my NetPrint 1000 may be shot. Also realize that there were a number of company acquisitions (DPI / Digital Product Inc., Osicom, Sorrento), so there is little to no information left on the Internet regarding these print servers.

Here is what you need to know:

1.) Take the cover off the print server. On the left and right sides there is a little tab that holds the case together. Get a flat-head screwdriver and apply it to either the left or right side along the seam.
2.) Jumper pins. On the NetPrint 50 you want: Auto; 10BaseT. On the NetPrint 1000 you want: 10BaseT; Auto; Tx; Factory (Jumper 10). Remember, I couldn't get my NetPrint 1000 working.
3.) IP Address. The NetPrint print servers use BOOTP to obtain an IP address. Realize - this is an older version of DHCP, but NOT the same thing as DHCP. Some DHCP servers are backwards compatible and support BOOTP. Fat chance, though. My wireless router only has a DHCP server. So, obtaining an IP address automatically is likely far too difficult / impossible. What you will need to do is assign an IP address to the unit. We cannot use DHCP to do this, and we cannot remotely access the unit (web server / Port 80 is not listening on my units). To assign an IP address to your unit, open up a DOS / CMD prompt (Start->Run; type: "cmd" and hit OK). We will be using the ARP command, which stands for Address Resolution Protocol. This is the protocol that translates between IP addresses and MAC addresses.
a.) Select an IP address you want to assign to the unit
b.) Ok, now look at the bottom of your unit and find the MAC address; it begins with two zeros.

Now enter this command:

arp -s 192.168.0.16 00-40-AF-18-61-40

replace 192.168.0.16 with the IP address you want to assign to the unit. Replace 00-40-AF-18-61-40 with the MAC address found on the bottom of our unit.

What we just did was tell your computer that anytime we send data to that IP address, it will actually send it to that MAC address, which is your unit. Ok, good job.

Now type: arp -a
and you should see and verify your entry. If you made a mistake, type: arp -d 192.168.0.16 to remove your entry.

Now, your NetPrint print server has no idea it's just been assigned an address. And it won't know to respond to that IP address unless we make it listen on that IP address. This is easy to do. All you have to do is ping the unit. Don't worry if the unit does not reply to your pings. Simply pinging it will make it realize it needs to listen on that IP address. So, type this command:

ping 192.168.0.16

Done. It's now listening on the IP address you just assigned it.

4.) Setup Printer in Windows XP. Ok, go to Control Panel -> Printers and Faxes. Add a Printer, select a Local Printer (uncheck plug-and-play). When it asks you to select a Printer Port (it will default to LPT1)... select Create New Port -> Standard TCP/IP Port. Hit Next. Now it will ask you for the Printer IP Address and Port Name: Enter the IP address you just assigned to your unit; the Port Name can be anything you want... this is just a string that uniquely identifies this printer port on your computer and it has nothing to do with the printer or print server itself (I used "RyansNetPrint"). If it asks you for what type of Network card, just select Generic. Select the Printer driver for the printer you have hooked up to your NetPrint print server.

5.) Setup LPR & Queue Name. We need to reconfigure this for it to work. Ok, Now under Control Panel->Printers and Faxes - right-click on your newly created printer and hit Properties. Click on the Ports tab. Highlight your newly created printer port (ie, RyansNetPrint) and the Configure Port button. Windows defaults the Protocol to RAW. This won't work on your NetPrint print servers. You need to select LPR. Now, the one last thing you need to do is enter the proper Queue Name. The Queue Name format is: "PORTn" Where n is the Port Number (probably 1 or 2) on your NetPrint print server where you connected your printer cable. My NetPrint 50 only has one port, so my Queue Name is "PORT1". This is where I found the Queue Name information: "http://www.brooksnet.com/faq/210-04.html". Realize - I couldn't get my NetPrint 1000 to work properly. I think it uses different Queue Names. For instance, I tried "PORT10001", "10001", etc... to no avail. I gave up and used my NetPrint 50 since it worked easily with the instructions I just gave you.

Now hit OK, click on the General tab, and click Print Test Page. Walaa!

Hope this helps you. Took me a long time to figure all this out.

Ryan

PS. the arp -s command is only peformed on your local computer. When you ping your unit. When you reboot yoru computer, the arp -s record your created will disappear. So, they key here is - my wireless router remembers what IP address goes to what MAC address (because I pinged it). Now, if my wireless router is powered off - it forgets that information. So - if you reboot your wireless router / network router / switch / hub... you will need to reenter the arp -s command and ping your NetPrint print server again to assign the IP address again. Not perfect, but it works.

Oct 28, 2007 | Osicom NetPrint 1000 Print Server

2 Answers

Cannot find print server at all


How this works: Restoring the PocketPrintServer to Factory Defaults In most cases, the best way to restore the PocketPrintServer to factory defaults is through "telnet". However, if you are unable to connect to the device because of a configuration error, use the following method which does not require a network connection. To restore the PocketPrintServer to factory defaults, complete the following steps: 1. Disconnect the PocketPrintServer from the network and power cycle it. When it powers up, the LED will rapidly blink orange for five seconds. 2. Power down the device during the rapid orange blink period. Power up the device and power it down during that orange blink period two more times. 3. Reconnect the network cable and power up the PocketPrintServer. It will have restored itself to factory defaults and will rapidly blink green as it searches for a RARP or BOOTP server to find an IP address. Gleaning If an IP address has not been permanently assigned when the PocketPrintServer is powered on or reset, it will look for a "ping" packet on the network. If the PocketPrintServer receives a "ping" packet within two minutes, it will accept the IP address in the "ping" packet as its own address. To use Gleaning, you must have super-user privileges on a UNIX system. Gleaning also works under Windows 95 and Windows NT. 1. Add an entry in the ARP table that assigns an IP address to the Ethernet address of the PocketPrintServer. To do this, use the "arp" command. arp -s temp Example: arp -s 192.168.42.24 00:02:16:00:00:01 temp 2. Start a continuous "ping" to the PocketPrintServer. ping Example: ping 192.168.42.24 On some systems, this may require an additional parameter. Some implementations of "ping" only send out one "ping" packet which could get lost in transit. Check your system documentation for more information. 3. Connect power to the PocketPrintServer. The PocketPrintServer will "glean" its IP address from the "ping" packet. This IP address will remain in effect until the PocketPrintServer is power cycled or reset. Therefore, a permanent IP address should be assigned by running the ExtendView TCP/IP utility or via "telnet".

Jan 30, 2007 | Extended Systems Pocket Print Server

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