Questions tagged [nlb]

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.

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How to rewrite URL to reflect name of NLB not backends?

I have a network load balancer in front of my httpd backends servers, but if I try to use write the name of NLB in the URL of my browser it'll redirect me to one backend, which is the goal, however, ...
N. J's user avatar
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How to correctly load balance requests from a Java client to an NLB over multiple AZs

Requests from a Java client to an NLB over multiple AZs Not load-balanced Summary: Expectation: every request from Java is load balanced between two nodes. Actual behavior: all the requests go to one ...
ŌHARA Kazutaka's user avatar
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69 views

IIS Cluster with ARR+NLB - Multiple Ports

I have two servers with NLB and ARR. And I have two IIS servers behind ARR. For now, as I tested, it only routes 80 and 443 ports. Can I route all ports (or may be defined ones) from ARR to IIS ...
LevanM's user avatar
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1 answer
580 views

gRPC bidirectional streaming client sometimes close rpc unexpected EOF to server behind Nginx Ingress

I am faced with the issue that a gRPC Client in Bidirectional streaming call to the server behind an AWS NLB, nginx ingress controller sometimes throws er "close rpc error: code = Internal desc = ...
Tristan's user avatar
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AWS Multi Zone Redundancy - Load Balancer vs Global Accelerator vs Elastic IP what to use?

I am a bit confused with the Options for load balancing between different AZs for redundancy. I have an application which requires network load balancing and should optimally not depend on DNS to do ...
VolkA's user avatar
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2 votes
2 answers
1k views

AWS NLB HTTPs health check using mTLS

Is it possible to do a AWS NLB HTTPs health check using mTLS? I tried setting up a TLS listener, loaded my cert, setup a TLS target group with HTTPs health check, but the health checks are still ...
RustyShackleford's user avatar
2 votes
2 answers
11k views

Achieving mTLS with AWS ALB

If I have an ALB in my infrastructure with ECS target groups downstream, will SSL/TLS always be terminated at the ALB? If so, are my only options ELB/NLB to preserve the SSL/TLS context?
RustyShackleford's user avatar
2 votes
5 answers
16k views

HTTPS 308 permanent redirection k8s ingress nginx

I have created an EKS cluster following the examples from AWS EKS, I have deployed the nginx ingress controller on top from kubernetes/nginx, Created an ingress resource which points to back end k8s ...
Cricket's user avatar
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1 answer
106 views

AWS NLB routing from separate CIDR block thru DirectConnect

In my VPC I have 2 CIDR blocks, one can only have a very limited number of IPs, so a very small CIDR block that also has routing rules to be able to talk through a DX to a CORP network. If I were to ...
Gandalf's user avatar
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1 vote
1 answer
2k views

Configuration of Microsoft NLB

I'm having an application hosted on a VM server2012r2. This application has a webpart, running .NET 5 (Kestrel). The webpart is accessible via http://<serverip>:808 or https://<serverip>:...
juFo's user avatar
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How companies use single VIP for multiple L4 services

I have two public IP's alloted by network team NAT'ed to two private IP x.x.x.2 and x.x.x.3. This private IP is assigned as a VIP on my Load Balancer. I am wondering how these two VIP's can be used ...
Dakshin's user avatar
2 votes
1 answer
2k views

Does AWS Network Load Balancer decrypt packet in TLS termination mode?

Architecture: client <-- TLS --> AWS Network Load Balancer port:443 <-- TLS --> backend server port:443 In the above architecture, TLS is terminated at the network load balancer (NLB). Is TLS ...
aaryan's user avatar
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0 votes
1 answer
978 views

"Could not read configuration of interface" adding new server to NLB cluster

I have a new server (Windows Server 2019) which I am trying to add to an old NLB cluster (It was set up on servers which previously did not consist of any servers newer than Windows Server 2003) In ...
MrVimes's user avatar
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1 vote
1 answer
2k views

Problems connecting 2nd host to NLB cluster

I've recently deployed Hyper-V into my hosting infrastructure and i'm trying to setup windows network load balancing and ARR so that i can have 2 VM web servers that are load balanced by 2 ARR servers ...
UserSN's user avatar
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2 votes
0 answers
153 views

Hyper-V, NLB, ARR cannot connect 1 host to another [closed]

I'm having trouble connecting 1 host to another even with windows firewall off on bot the VM and the host machines they cannot seem to find each other. Running Windows Server 2019 HyperV Host1: VM ...
UserSN's user avatar
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1 answer
327 views

Occasional Timeouts with Zabbix agents behind an AWS Network Load Balancer

My architecture in AWS is as follows: There are 2 identical zabbix agents (based on zabbix/zabbix-agent:centos-4.0.11) each one running on a different EC2 instance. Zabbix server runs on a third ...
dimisjim's user avatar
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1 answer
3k views

Does AWS NLB accept traffic with destination IP's different from it's own?

Looking at using NLB to load balance two L3 transparent appliances, both of which listen on port 8181. But traffic hitting those appliances have arbitrary destination IP's. When I created the NLB, its ...
user3290431's user avatar
0 votes
3 answers
1k views

Can't access EC2 instance, but not NLB in other VPC

I've recently started the process of switching from AWS ELB to NLB, and I'm facing some connectivity issues. We have 2 VPCs. In VPC1, both EC2 database servers, old ELB and NLB is located. In VPC2, ...
Simon Fredsted's user avatar
2 votes
1 answer
81 views

Implementing a Highly Available backend gateway for a cloud app on AWS

I have 2 EIPs allocated for a cloud app, which are used in round robin DNS. I'd like to have some sort of high availability mode for our 2 gateways (proxies) which are associated with those EIPs, so I ...
Mihai Todor's user avatar
0 votes
1 answer
289 views

Dualstack support for IGMP multicast NLB on Windows 2016

I have two Windows 2016 VMs set up as an NLB cluster. Each guest has two interfaces, one of which is for the NLB, the other for other traffic. I've added an IPv4 and an IPv6 address to the cluster. ...
Morten Nilsen's user avatar
0 votes
0 answers
411 views

Windows NLB : Get-NLBClusterNode reports Invalid Data

I've setup a cluster of 2 Nodes using Windows Network Load Balancing feature. Everything is well setup, my cluster For moinitoring purposes, I'd like to get the status of the nodes within the ...
3isenHeim's user avatar
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1 vote
0 answers
426 views

Microsoft NLB (Network Load Balancing) and the OSI Layer

I'm unable to track down in the documentation at which layer MS NLB operates at. I'm pretty sure it's unable to interpret Application Layer 7 traffic, for example knowing that HTTP 503 is actually an ...
Jaans's user avatar
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2 votes
0 answers
510 views

New-NlbCluster Access denied

This is a question and answer at the same time that I want to share to the community because google search "New-NlbCluster : Access denied" did not bring any results. Problem: Starting from 15 Apr ...
Jari Kulmala's user avatar
1 vote
1 answer
590 views

Windows NLB is not forwarding UDP

I have setup Windows NLB which works fine with http. But it is not forwarding the UDP reply to the client. Backgroud: NLB - 192.168.1.10 Host1 - 192.168.1.11 Client - 192.168.1.5 I am forward all ...
Purushoth's user avatar
  • 111
1 vote
1 answer
852 views

Why is IIS not allowing TCP connections from external IPs through NLB

I've got a development web server environment consisting of 2 Windows 2012 VM's configured with NLB (Multicast mode.) They are each using a single network adapter with 2 IP's assigned: the shared NLB ...
Jordan Rieger's user avatar
2 votes
1 answer
401 views

Will putting 2012 R2 RD gateway server into Drainstop disconnect currently active users?

I have had a bit of a search for clarification on this, but have only found info on draining session hosts. I need to make some amendments to our 2012 R2 gateway server VMs, but due to the nature of ...
James Edmonds's user avatar
0 votes
1 answer
80 views

Network load balancer - scheduled host stop

I've three servers on a NLB Windows server 2012. At the moment each of these machines has a site with a scheduled app pool refresh which I want to handle by taking that node off line while the app ...
Full Time Skeleton's user avatar
1 vote
1 answer
6k views

Is it possible to run HAProxy load balancer on Windows Server 2012 R2 Base for production?

I want to run HAProxy on Windows Server 2012 R2 Base for production. I read this blog: http://zcourts.com/2012/09/29/install-haproxy-on-windows-cygwin-good-for-testing and it conveys that HAProxy on ...
chaudharyp's user avatar
0 votes
1 answer
332 views

Setup Windows 2012 NLB with two internal servers

Im trying to setup a load balancing between two server on which a IIS website is running. I have a third server which actually is free to be used, i thought this one might be used to balance the load ...
NovumCoder's user avatar
1 vote
2 answers
266 views

how should i store files for iis web root on windows servers in nlb configuration?

I have multiple windows virtual machines in a network load balanced environment. They each have a local disk (C: drive) that has the files for delivering our website (inetpub/wwwroot). The problem ...
jOshT's user avatar
  • 111
-2 votes
1 answer
2k views

Should I disable "register this connection's addresses in DNS"?

I have DC and aditional DC, both have DNS services and AD replications on. I have configured NLB cluster to used with IIS services on same servers. Problem is that the NLB cluster adress popups up ...
Timo77's user avatar
  • 131
5 votes
1 answer
7k views

Providing High Availability for NPS

I need to ensure high availability for RADIUS service in Windows Server environment so it can withstand loss or even temporary downtime of any particular server holding NPS role. Most of technet ...
strange walker's user avatar
1 vote
1 answer
9k views

Issues with NLB on Windows 2012

I'm running into an issue when setting up NLB for three virtual servers on vSphere. Each server is running Windows Server 2012 and has a single static IP address. One of the servers has a second NIC ...
Omegacron's user avatar
  • 113
1 vote
1 answer
599 views

Windows Service Bus and Network Load Balancing

I'm looking to build an HA service bus farm, hopefully using Microsoft NLB on Windows Server 2012 R2, something like what is described here. In the output below 9354 belongs to Microsoft.ServiceBus....
Rhys's user avatar
  • 57
0 votes
1 answer
2k views

Windows Server NLB vs hardware-based NLB [closed]

Can somebody with extensive experience explain me what are the selling points of hardware-based NLB over Windows NLB and what are major/main disadvantages of Windows NLB? I recently read through some ...
Mike's user avatar
  • 1,315
1 vote
1 answer
6k views

Windows Server 2012 NLB logging

Can somebody clarify to me what are the best practices when it comes to configuring logging and monitoring for Windows Server 2012 NLB. I believe there are 2 types of logging from management service ...
Mike's user avatar
  • 1,315
2 votes
0 answers
111 views

NLB - detect service down

I am trying to work out how to use PowerShell to detect when a load balanced (NLB) Apache service is no longer accepting requests (but the service is still running). Windows NLB detect dead IIS? ...
eddie's user avatar
  • 31
1 vote
1 answer
7k views

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 ...
Jordan Rieger's user avatar
1 vote
0 answers
2k views

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 ...
user303171's user avatar
1 vote
2 answers
2k views

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 ...
Nevo's user avatar
  • 111
0 votes
1 answer
706 views

ARR Load Balance with two Machines - Always redirect to same Site

described steps for each setup. Created a sample Application WebShareTest , hosted the application in M1(IP 36) on port (80) and same Binary I hosted in M2(IP 210) (on port 8070) I pointed some ...
Akshay Joy's user avatar
1 vote
0 answers
81 views

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 ...
amatesi's user avatar
  • 46
-6 votes
1 answer
218 views

Network Load Balancing VMWARE [closed]

Is network load balancing (NLB) with windows server 2012 using unicast and active-passive mode supported on VMWARE ? More details: I have 3 http servers running inside a windows server 2012 ...
Momo's user avatar
  • 553
3 votes
2 answers
3k views

Does Windows Network Load Balancing require any specific ports to be open?

I have two Windows 2012 servers, joined in a Windows Network Load Balancing cluster. I have been trying to find how the NLB heartbeat message is exchanged between those servers (to make sure it will ...
rinspy's user avatar
  • 133
1 vote
1 answer
1k views

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 ...
gac's user avatar
  • 459
0 votes
1 answer
164 views

How do I know which node in a cluster answers?

I have set up an NLB with two servers (nodes) which are running the same service. The filtering is single host, because I don’t want them to run at the same time, because there is data in the cache DB,...
Horaceman's user avatar
  • 145
1 vote
1 answer
1k views

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 ...
Vik's user avatar
  • 11
2 votes
1 answer
1k views

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 ...
Maxim Gueivandov's user avatar
1 vote
2 answers
2k views

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, ...
Eduard Florinescu's user avatar
0 votes
0 answers
377 views

Two NLB mutlicast clusters on the same VLAN processing same traffic

I have an older ISA2006 based NLB cluster which I plan to migrate to a new TMG2010 NLB cluster. I need to have both clusters active for some time during migration (with different IPs of course). Both ...
Youmoe's user avatar
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