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Questions tagged [load-balancer]

For questions about load balancer network devices. For instance, the Citrix Netscaler, Barracuda load balancer etc. All hardware related network devices, that function as a load balancer for a computer network.

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Can an L4 Load Balancer shift an existing SCTP/TCP Connection from One Backend Server to another without requiring client to make a new Connection?

I'm currently working on a network setup that uses an L4 load balancer to manage traffic for our services. The L4 load balancer effectively distributes new client connections to various backend ...
The Average Developer's user avatar
1 vote
0 answers
200 views

Netscaler SDX 11515 login failure after upgrade

I've got a makeshift lab scenario with an old SDX that came with 10.1 software. I'm new to these machines but have inherited the project and need to cope. I simply used the default nsroot/nsroot login ...
Zac67's user avatar
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2 votes
2 answers
549 views

Where should I locate F5 Load Balancer in Network Segmentation?

I segmented my network and locate some important servers behind of firewall. So, I restricted traffic LAN (no segmentation between LAN clients, LAN servers) to/from important servers. These servers ...
onur's user avatar
  • 121
0 votes
2 answers
44 views

What's the meaning of requests in Load-balancer?

When I read thisarticle: there is a term: Load-balancer is the piece of hardware that listens on a particular IP address and forwards the requests to other servers. Major sites will typically use ...
26334_zeal's user avatar
0 votes
0 answers
45 views

F5 Big-IP VE incorrect load balancer operation

I have F5 Big-IP VE version 13.1.1 LTM configuration: 3 nodes pool with LB Method Round Robin Virtual Server LB (Round Robin) switches the node when the web page requests after 15 seconds. If it is ...
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1 vote
2 answers
1k views

F5 backup whole bigIP configuration and save UCS

I'm trying to export my current F5 bigIP configuration into a file and later create a replica of the same bigIP with that configuration. This reference mentioned following this: Create the UCS ...
Tina J's user avatar
  • 235
5 votes
1 answer
74 views

F5 BigIQ communication with BigIP

I'm new to F5. Basically a BigIQ centrally manages BigIP load balancers. In order to update the device, I have to login to the UI and apply the changes there. I would like to know how this is done (...
Tina J's user avatar
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1 vote
1 answer
70 views

Can I tie together two cellular connections for more reliable upload speeds?

I don't know that much about network engineering (hence why I'm here) so please bear with me, or point me to somewhere else where I can get help. I want to be able to broadcast a high quality video ...
lsma's user avatar
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0 votes
1 answer
193 views

what is a load balancer predictor [closed]

I understand what a load balancer is but I am not able to understand what a load balancer predictor. Can anyone please point me to some resource or wiki to undrstand this?
Prashant Bhanarkar's user avatar
2 votes
1 answer
3k views

How can we reset a service account password in the F5 CLI?

How can we reset a service account password in F5 from the CLI? Is that even possible? If yes, can anyone please let me know the CLI commands?
newbie's user avatar
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1 vote
2 answers
68 views

Load balancer features - load compensation

I was researching network load balancer features recently and I couldn't find a certain feature. I believe I heard some years ago about a network load balancer feature (don't remember any feature ...
Andrei Rînea's user avatar
2 votes
4 answers
3k views

Web server address with two ISPs

I am new to networking and I have the following problem. In the small company I work in we have a load balance router with two ISPs (only one ISP is connected at the moment) and to the router there is ...
peter_s's user avatar
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3 votes
1 answer
4k views

Where do you place a load balancer?

Say I have two servers (droplets in case of DigitalOcean). I want to run a load balancer infornt of the two. So should I spawn a new droplet for the load balancer? If so, how can I utilize the third ...
user avatar
1 vote
1 answer
271 views

Is dual WAN load balancing possible for traffic to/from a webserver

We are currently hosting our website onsite and are maxing out the up and down speeds of the 50/5 mbps bandwidth provided by our ISP. They can not offer us a higher bandwidth connection but they can ...
ScottF's user avatar
  • 113
0 votes
1 answer
70 views

load balancer in high availibility

I want to apply the following architecture, where i have two app servers in order to ensure high availibility. Do i need to use two dedicated servers for load balancer or is it possible to use a ...
Dorasm's user avatar
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3 votes
2 answers
6k views

What's the difference between interdomain and intradomain load balancing?

So I read that when a router knows two paths with equal cost to a destination it can perform load balancing. This load balancing occurs interdomain or intradomain. I can't undestand that because I ...
R. Luis's user avatar
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3 votes
1 answer
158 views

F5 loading balancing - Routing requests to specific server in pool when specified in the request?

I have several web applications that are load balanced by an F5 appliance. What I would like to know is, for support reasons, is there a way to form an HTTP Request and have the F5 appliance route it ...
cacodev's user avatar
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0 votes
1 answer
46 views

Supporting 100+ WiFi Devices at a time [closed]

I have a co-working space where there are around 50 devices that needs to be connected to a WiFi. The setup that I have now: I am using 4 connections from different ISPs with varying bandwidth. All ...
Hemant Aggarwal's user avatar
0 votes
1 answer
652 views

Load Balancing System For 2 Servers on Different Datacenters [closed]

I am using Ubuntu 15 and I need to implement simple/effective Load Balancer / Fail Over System as per the below requirements: a. It should balance the load between two different public IPs (two ...
SnowmanOnFire's user avatar
1 vote
1 answer
776 views

Brocade ADX 1000 load balancing: Can't reach the VIP

Weird. We just got a Brocade ADX 1000 for server load balancing. Config is setup to emulate the basic load balancer configuration in their guide (real servers, VIP and management IP are all members of ...
Unpossible's user avatar
2 votes
1 answer
574 views

Using co-located wireless access points to maximize client bandwidth [closed]

I need to support between 50 and 100 simultaneous wireless clients that use a wide variety of devices, from smartphones to laptops, and the primary network load is full-screen streaming video. My ...
pipe2null's user avatar
2 votes
1 answer
590 views

Routing traffic to a load-balanced, autoscaling NAT layer on AWS [closed]

I am trying to create a network with the following features in AWS: A private subnet with one EC2 instance, called 'Traffic Source' All HTTP(S) traffic from the Traffic Source subnet destined for 0.0....
StudentsTea's user avatar
0 votes
1 answer
1k views

F5 auto SNAT not working

I have install F5 VM edition to do SNAT testing but fail to produce scenario. I have enable autonat on VIP (10.10.10.201) and trying to ping google.com from A, B, C machines but ping doesn't work also ...
Satish's user avatar
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2 votes
4 answers
2k views

What is the difference between uplink and downlink (JMeter)?

I am trying to create a load test with JMeter, and what I want to do is to limit the bandwidth to 200mbit/second. I have two options, which are "Network Bandwidth Downlink" and "Network Bandwidth ...
Thomas Gard's user avatar
1 vote
2 answers
3k views

F5 VIP required to have on External VLAN?

I have following network diagram [Core Switch] <-- VLAN 20 external | | <--- VIP [F5] | <--- ...
Satish's user avatar
  • 4,379
3 votes
1 answer
18k views

F5 Routing - Default Route or IP Forwarding Virtual Server?

In the 21st video of the F5 video series in CBT Nuggets, Keith Barker explains that the way to make the F5 "route" is by creating an IP Forwarding Virtual Server. This server would have the following ...
Michael May's user avatar
  • 1,005
4 votes
1 answer
311 views

Moving to vlans from a basic network

I've currently got a network setup like this. Layer 1 2 cable modems -> Peplink Load Balancer 1 -> 192.168.4.0/24 for wifi and clients Layer 2 1 connection from the Peplink + Fiber -> Peplink Load ...
ahackney's user avatar
  • 201
0 votes
1 answer
696 views

Microsoft load balancer heartbeat [closed]

I'm dealing with the following situation: I have 2 servers running Windows 2012 R2 and 1 server running Windows 2008 R2. I need to build a Microsoft Network LoadBalancer cluster using the 3 servers; ...
Ottootto's user avatar
  • 131
2 votes
1 answer
2k views

Session, loadbalancer and Akamai

We are facing one issue while implementing Akamai in our application, issue is related to session maintenance. My application structure is – Akamai (xyz.com) -> Origin (origin-xyz.com) -> VIP / LB (...
user7848's user avatar
0 votes
1 answer
2k views

Load balancing vs hardware clustering [closed]

Which one is the most common high availability techniques? It seems that I can't distinguis the different between the two concept.
c.sokun's user avatar
  • 101
2 votes
2 answers
3k views

Does Netscaler authenticate the back-end server's certificate?

Disclaimer: I am not a network engineer but a software engineer so I may muddle my terminology, feel free to correct me where I go wrong! My understanding of our set-up is: We have a Netscaler (lets ...
Belogix's user avatar
  • 123
4 votes
1 answer
182 views

Using SSL with Cisco Network Load balancer

We have a Cisco 4700 ACE Router/Load Balancer which sits on the outside of our DMZ. In addition we have that forward network traffic in round-robin mode to 2 IIS servers. We have opened up SSL port ...
user183872's user avatar
10 votes
2 answers
2k views

How do load balancers fit in to a data center with much higher throughput than they can handle?

You have a data center standardized on 10GE connections. With, say, Nexus 7000s in the core, Nexus 5000s at the aggregation, and some fabric extenders for the edge to the servers (I use Cisco gear ...
sentinel's user avatar
  • 103
5 votes
1 answer
3k views

Measurement of Traffic Parameters using SNMP

First, do 'Octets' in ifInOctets and ifOutOctets actually refer to packets? Can someone explain in detail? Also, if I want to measure the traffic flowing between certain set of nodes, how do I ...
Abhishek Balaji R's user avatar
2 votes
1 answer
1k views

Why am I having issues accessing a website hosted on servers behind a load-balancer?

I am having an issue with an offsite location accessing a website that is hosted on 3 servers behind a Coyotoepoint Load-Balancer, at our Corporate Office. We currently have well over 500 locations ...
Luke's user avatar
  • 114
7 votes
2 answers
13k views

F5 session timeouts

Our F5 load balancers run version 10.2.4. We migrated from Cisco load balancer cards on the Catalyst 6500 and used to be able to run xterm sessions to our solaris and linux servers without the ...
user2561's user avatar
  • 193
8 votes
2 answers
2k views

SNAT vs PBR for Server Load Balancing

In an one-armed SLB configuration, SNAT is used to force return-traffic to pass through the SLB. This has one negative: simply that web logs cannot capture the true client IP unless passed in XFF (X-...
generalnetworkerror's user avatar