Changed the mother board so MAC address has been changed comunication is not established now, how to insert the new MAC address in server, currently it is not communicationg with PLC Please help me,

You can change mac-address of SCUB on Huawei OLT MA5680T in following way:
1. First you have to login as root user
2. You will have to enter in diagnose mode with following commands:
huawei(config)#diagnose
huawei(diagnose)%
3. you have to check which mac address is currently in the system by command:
huawei(diagnose)% display sysman mac-address
Current MAC address of active mainboard: 0025-1c54-c45c
Default MAC address of active mainboard: 0025-1c54-d0763
4. Changing mac-address you can done with command:
huawei(diagnose)%sysman mac-address current 0025-1c54-c455
Command:
sysman mac-address current 0025-1c54-c455
Modifying current MAC address may cause the conflict of MAC address, are you
sure?(y/n) [n]:y
5. Last step is to reboot board on which you have change mac-address or to reboot system. In this way new mac-address will be applied to the SCUB board

Hi
I find your question very interesting, and also your WiFi support comment, because in 18 years of IT consultancy and troubleshooting I have never come across a changing mac address.
The mac address is
"a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet and WiFi."
The emphasis here is on "unique" and all network adaptors I have come across - ethernet or WiFi have had a fixed mac address. Are you sure they didn't mean IP address, as this is supplied by the router/access point via a DHCP server, and can change according to the access requirements of the router/access point.
If you go here:
MAC address Wikipedia the free encyclopedia
you can learn a lot more about mac addresses.
Hope this is helpful, if so would you please register that with Fixya
Cheers

There are two steps that we can suggest,

A)

1) Install the psadmin software if you have not already. If you have lost the psadmin software then search for it on the web.
2) Start the psadmin software and click "factory reset".
3) If the software demands a password, try "SYSxxxx", where xxxx stands for the last four digits of the MAC address located on the underside of your server. (Example: if your MAC address were "63 XE 29 44 F2 96", then your password would be SYSF296.)
4) Click yes to confirm the reset.

B)

On the back of the print server you will find a pin hole, insert a paper clip for 30 secs with the print server powered on. All lights will flash. Try to setup the server again.

Hope this helps.

Regards,
Shrey

You may be using the wrong SMTP address for the Outgoing mail server address for your email service.

If you are not sure what your SMTP Outgoing Mail Server address is, then you can reference this link
below, to locate the Outgoing mail server address of your current email service provider

Link: POP & SMTP Email Server Addresses
---------------------------------------------------------------------
In regards to checking your mail settings in Mac OS X Mail you will need to perform these few steps:

*Launch Mail
• Click on Mail name and select Preferences from
the drop down menu.
• Now select the Account tab.
• Locate your affected email account from the side
bar and from Account Information, make sure
your Outgoing mail server address is correct.


I am using a .Mac account as an example,
but the same principal applies.

Now if you do find that the Outgoing mail server address for your email service is correct, then the issue may be with the SMTP server for your email service.

One way to determine SMTP functionality however, is to go online and use the web mail page for your email account and send out a test email.
---------------------------------------------------------------------
I would also recommend you make sure your Macbook Pro also has the most current version update.

Apple usually has bug fixes in each of their version updates for the Mac OS X Mail application, as well as other built in Mac OS X applications.

If you are still unable to send outgoing mail, contact your service provider to get more assistance and have them check your SMTP server address, authentication and connection with their Outgoing Mail servers.

Regards,

-Mactechtrainer

you have to install the proper driver for Lan card you are using ...probably at installing the windows installed a driver for the card but is not the driver that this card is using ...so ..if you have the driver on the cd ..just install it ..and redo the settings to connect ...the tcp ip protocol for lan t1 cable...or the automatic ip for dsl modem ...anyway
even with the wrong drivers it is showing conected and working ..but the packets are not sent ...you can wathc this in the window that pop up when you click on tray system icon ..
another issue is if you changes the LAN card recently ... or you changed the pc ...and u used to have a nother IP based ( static ip ...) you have to call the provider and comunicate the new MAC address on your computer ..
if yo can not get in touch with your provider ..but you know that you have an Ip ;subnet mask ;default gateway ; and servers ..that you set every time ...this means that your mac address have to be changed either on the provider or look on the net and download a patch named MadMac..or MAC make-up ..this will help you to cl;one the mac adress on your lan card in such way that the provider will see it like the old one ...all you have to know is the old card mac adress in order to clone it ..
http://www.softpedia.com/get/Network-Tools/Misc-Networking-Tools/Mac-Makeup.shtml
remember ..this with the mac address thing should be done just if you changed card or comnputer and you have a Mac-ip re;lation with your iSP

There is no way to change the MAC address, but you can make Windows tell the system it has a different address that might fool your other program. Follow the instructions below.
Change the MAC address in Windows

1. Go to Start -> Control Panel. Double click on Network Connections (inside Network and Internet Connections category in Windows XP). The, right click on the active network connection with network adapter that you want to change the MAC address (normally Local Area Network or Wireless Network Connection) and click on Properties. Above steps work in Windows XP, Windows 2000 and Windows Server 2003 . For Windows Vista, access to NIC’s properties is from Control Panel -> Network and Internet -> Network and Sharing Center -> Manage Network Connections.
   Alternatively, if you already know which network adapter that’s responsible for your network or Internet connection, go to Device Manager and open the properties dialog by double click on the NIC itself.
   
2. In the General tab, click on the Configure button.
3. Click on Advanced tab.
4. In the Property section, select and highlight Network Address or Locally Administered Address.
5. To the right, “Not Present” radio button is by default selected as value. Change the value by clicking on radio button for Value:, and then type in a new MAC address to assign to the NIC. The MAC address consists of 6 pairs of numbers (0 - 9) and characters (A - F) combination. For example, 88-17-E8-90-E2-0A. When entering the new MAC value, omit the dash (-), for example 8817E890E20A.
   
6. Click OK when done.
7. To verify the change of MAC address, go to command prompt, then type in one of the following commands: ipconfig /all
   net config rdr
   
8. Reboot the computer if successful to make the change effective.

This might help your quest:

http://64.223.189.234/node/891

This would need to be configured on whatever system it is that is serving DHCP. Assuming it is the same box as ISA Server, it would then have to be running Microsoft DHCP. In Microsoft's DHCP, you can assign reservations for specific MAC addresses. You need to open the DHCP management console, then expand out the server name. If the server name is not listed, you will need to connect to the server hosting the DHCP service by right clicking on the root node, etc.

Assuming you have a connection to the DHCP server and can see the zone you are referring to (172.16.2.0/23 which contains all addresses in the subnet to which you refer), under the zone, right click on Reservations and choose New Reservation. Enter a name, the specific IP address for that machine and the MAC address. That's all there is to it. Next time that machine requests an address from the DHCP server, it will issue the address you configured. It will not issue it to any other machine.