Hi, I have two VM citrix servers that i have load balanced using windows NLB. My users are on a different subnet so I have the load balancing configuration set to Multicast mode. (I have a second nic in each server for the heartbeat). The problem is our 5500G-EI_Core_Switch complains about the following command when entered arp static 10.2.1.28 03bf-0a02-011c 1 GigabitEthernet1/0/5 Error: Invalid MAC address! I have checked the virtual mac in NLB and it is correct. What do i need to do to the switch to make mulicasting work. Thanks in advance for any help

Your Internet gateway <--- primary router

Port #1 on primary router <---> VPN server
Port #2 on primary router <--> Load Balancer
Load Balancer <--> web-server #1
Load Balancer <--> web-server #2
Load Balancer <--> web-server #3

VPN traffic enters your network, through the router to the VPN server, and then VPN-server back through the router to your internal servers. Web-traffic goes through the Load Balancer, for distribution to the collection of servers.

refer the opening balance cell to the closing balance cell.. so everytime your closing balance change it would change the opening balance as well.. just use the simple formula Closing Balance Cell (A1)=Opening Balance (B2)

every user created on the OS will have to have different settings.....

before making changes...get the foll info from your internet service provider
IP Address, Subnet mask, Default Gateway, DNS server address both primary and secondary

once that's available.....

you can use different settings in in WinXP as below....

Control panel / Network Connection /Local Area Conn /Right click / properties/ Internet Protocol TCP IP / Check Box / Propertis / in IP address use the IP address that's been assigned by your internet service provider

log in to first user accunt and make the settings....for....
IP Address, Subnet mask, Default Gateway, DNS server address both primary and secondary
use the info obtained from the service provider.....
....then
in the IP address filed use some thing similar like this..(check your internet service provider for that info).....the foll is only an example from my PC
say....192.168.1.2 for user ONE

log out....
shut down and restart PC
log in to second user accunt and make the settings....for all the above fileds....then
in the IP address filed use 192.168.1.4 for user TWO....(note the difference of the last filed of the IP address....2 vs 4)...every new user a/c the last field of IP address keeps changing

1st user ....say 192.168.1.2
2nd user .........192.168.1.4
3rd user ..........192.168.1.6
etc...

http://windows.microsoft.com/en-IN/windows-vista/Change-proxy-settings-in-Internet-Explorer

hope this helps
reg
Suresh

There are a number of bugs that are fixed in the latest firmwares.
You can get the firmware updates at
http://www.tp-link.com/en/support/version.aspx?mid=01030305&pid=775
I'm assuming you're using the load balancing feature here...lol...when you called it a router rather than a load balancer, it threw me off for a second with the 2X wan !
You'll need to look at the little diagram on the page to see if you have a ver 1, 2, 3 or 4 before you update the balancer / router.
You've probably run into an issue where you are getting ports assigned that the router needs for itself, and the new firmware addresses that along with many other little bug fixes (at least the ver 3 does).
If the firmware update doesn't do it for you, please don't hesitate to either reply to this post, or post a new problem...but if you make a new post, please remember that I likely won't be picking it up, and whoever does, will know nothing of the information here, so you will have to provide all information again in the new post.

Hi,

What you are looking for is called Network Load Balancing or NLB.

Nice concept. Nice thought. But it is in no way easy or cheap.

NLB is normally available in Server Environments. Hardware NLB is the most common. I actually don't know any cheap software NLB that I can recommend. If you have the money and need, go after it.

Most cheap software based NLB actually simple do redundancy implementation (i.e. if one line is down, use another). There is no real load balancing to speed up as you want it.

Makes sense only businesses.

Cheers

TeaCii
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You can. But check for other issue which are hampering server performance. Load balancing will not improve performance. It to make application available in case of disaster. Infact it will increase the load on server.

Regards,
Abhay.

Load Balancing is a complicated issue.  Generally speaking multi-homing or having multiple NICs and IPs on one server is NOT the best way to Load balance.  You should probably start with looking up DNS Round Robin Load-Balancing.  

Make sure you have your IP addresses properly configured. An IPv4 address is made up of four numbers fro 0 to 255 (eight-bit binary numbers) separated by periods, for example, 192.168.1.1. The first three numbers are the subnet address; for small networks, the factory default is usually 192.168.1. Every computer, router, print server, etc., on the subnet must have the same subnet address to communicate directly. (Generally, there is only one router on a subnet). Also, verify that everybody has the same subnet mask (usually 255.255.255.255).

Client computers on a network usually have addresses assigned automatically by the router using DHCP. Print servers and the router should have their addresses assigned manually so the other units on the network can find them at the same place after a restart. Routers typically get address 0 or 1 (e. g., 192.168.1.1). It is a good idea to configure the router to reserve the print server address (or make sure it is in the block of reserved addresses so it is never assigned to anything else since that would cause a conflict (server busy?). Use a high number for the print server address (e. g.,200-255, as in 192.168.1.254, which is the default address for the Airlink 101). On Windows, type <Windows-r> to get the run program <filename> dialog, then type "cmd" to get a command line window. Type "ipconfig /all" to read the IP address information. Type "ipconfig /renew" to get a new address. For information on using ipconfig to modify IP address parameters, type "ipconfig /?"

On each Mac, open the Network control panel, select IPv4, click on "Advanced", then click on "Renew IP lease." Verify that the computer gets an IP address in the correct range from the router, for example, IP address 192.168.1.14, subnet mask 255.255.255.255, default gateway 192.168.1.1. The DNS server will most likely be on a different subnet out on the Internet.

Now you should be able to find the print server using Rendezvous, LPR printiving via IP or AppleTalk.

http://www.airlink101.com/download_links/apsusb1_manual.pdf
The manual linked here is a bit old, but it covers Mac OS 10.3 configuration for a Airlink server. Your server may be a different model, but operation is probably similar unless AppleTalk and other older protocols have been removed.

Open Shortest Path First (OSPF) routing protocol is a Link State protocol based on cost rather than hops or ticks (i.e. it is not a vector based routing protocol). As with RIPv2 different sized subnet masks can be used within the same network thereby allowing more efficient utilisation of available address space. Also, OSPF supports unnumbered point to point links and equal cost multipath (or load balancing for up to 6 paths; meaning balancing the distribution of IP datagrams down parallel routes to the same destination router using a round robin or a direct addressing option).

And U can read remaining topics in thislink

Hello.

Yes they generally refer to load balancing on different servers however that does vary per website. This method is usually only found on high-traffic websites.

Hope that helps!