Network Load Balancing (NLB) is a component in Windows Server operating systems that load balances network traffic (sent to a cluster virtual IP address) among multiple servers in an NLB cluster.
Questions tagged [nlb]
125 questions
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One Network Load Balancing host can't see the other
We have setup a Windows Network Load Balancing (NLB) cluster of 2 hosts for our new staging environment. The cluster initially works fine, but eventually, after stopping and starting one of the hosts via our automated deployment script, the first…

Jordan Rieger
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Microsoft Network Load Balancing - Hosts Won't Converge Simultaneously
I am running Network Load Balancing on two Windows Server 2012 R2 Datacenter VMs in a VMWare ESXi Host environment. The cluster and hosts are configured to use multicast and all are on the same VLAN and have both a dedicated LAN card as well as an…

user303171
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Windows Server 2008 NLB doesn't respond to ARP request
I have two instances of Windows Server 2008 running in Hyper-V VM's. The two instances are configured in a multicast NLB. I can ping either node from another subnet, but I get a timeout when pinging the NLB name.
If I stop NLB on one node and take a…

Nevo
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Load balance 2 wireless adapters on 2 different computers (ie. w/NLB)
I have 2 physical servers running 2012R2.
Each box has its own wireless nic.
I also have 1 SSID to which both servers/WLANs connect to.
While trying to setup NLB, I noticed the Wireless NICs didn't show up.
I was wondering why (ie. technically) it…

amatesi
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Windows multicast NLB with Linux clients
I'm (on behalf of a client, anyway) having some troubles with Linux accessing a multicast NLB cluster hosted on Hyper-V (waiting for more information on what version, but I don't think the version is too relevant because this seems a client side…

gac
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NLB/DFS between servers at different locations?
I currently run a web application on a single VPS but have the need to make it redundant so that the website will not become unavailable in case the server goes down for any reason.
I have found that NLB (Network Load Balancing) could get the job…

Vik
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NLB ARR cross-node setup
Given:
one ASP.NET web application
2 Windows servers with IIS installed (no more servers allowed)
I want to enable load balancing / failover for that application, on both server and application levels.
My plan is:
1) Install the web application on…

Maxim Gueivandov
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How to synchronize applications between two terminal-service servers?
We have two terminal-service server and we use Network Load Balancing (NLB) to cluster this two terminal-service servers together.
We need to have the same applications installed on the two servers, because if one user who uses the terminal is…

Eduard Florinescu
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Is there a primary webserver in a NLB scenario?
I help administer a small NLB that points to two Windows Servers running IIS which share a configuration. The sites' flat files are replicated using DFSR.
I get the gist of how this all works from these articles.
Overview of Network Load…
user28664
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Network Load Balancing Manager failover
I would like to be notified when one of my clusters in Network Load Balancing Manager starts up or fails. The documentation seems to infer that there are no advanced scripting, logging, or notification capabilities in NLB and that my only option is…

Aaron
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Windows Remote Desktop Cluster - can we force some users to a specific server?
Given an RDS cluster with NLB, users connect and login to one of the servers at random.
But there is one program that's only available on one of the servers (licensing reasons).
Can we force a group of users to always be logged on to one specific…

TessellatingHeckler
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How Application Request Routing(ARR) will work with IIS Web Services
I currently have 2 servers on Which nlb and application pools are running .Since the nlb doesn't recognize, that if an application pool has failed, it sends the request even when an application pool has stopped.
So, I was thinking of Application…

user167353
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Advantage of Microsoft Cluster over Microsoft Network Load Balancer
Till recently, I assumed that Microsoft NLB worked at an OS/Machine level rather than an Application Level. i.e. the NLB just monitors heartbeats on the machine to check if machine is alive and then switches off a particular node if it's gone…

user93353
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MaxKeepAliveRequests for IIS7 (with NLB)
We have an IIS7 running on several nodes in an NLB cluster. The NLB nodes are set to Affinity:None so that new connections are spread across them. We want KeepAlive switched on so that we can get better performance but we are finding that when one…

David Newcomb
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Can I run two virtual Windows Server 2008 machines in an NLB Cluster all on one Windows 7 box?
I am writing a prototype ASP.NET web application that demonstrates the use of distributed caching for scalability purposes. In order to do this, I would like to set up a couple of load balanced windows servers to play around with. Having only my…

Steve Elmer
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