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Network Operations

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Network Operations includes asset management, help-desk supervision, security and user policies, infrastructure administration and anything else that affects the operation of your network. Discussions will include those of best practices in platforms, configurations, performance, security and accounting.

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In this article, we’ll look at how to deploy ProxySQL.
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VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE
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VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Use of TCL script on Cisco devices:
 - create file and merge it with running configuration to apply configuration changes
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David Varnum recently wrote up his impressions of PRTG, based on a presentation by my colleague Christian at Tech Field Day at VMworld in Barcelona.

Thanks David, for your detailed and honest evaluation!
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by:Kimberley from Paessler
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Hi Ryan,

Thanks for your message.  I'll flesh it out a bit and then submit it again.

I have a related question:  If I have a topic/article/post that I only want to post to the Paessler Topics page, does it still go through independent review?  I tagged "paessler" on several articles, but haven't been asked to review or approve them.  Who decides what can appear on our topics page?

(um, to avoid confusion, yes, I'd like to post this article to several topics, after it meets the requirements for an article.  My question is more a hypothetical one, in case I have things to post only to the Paessler topics page at some point).

Thanks for your help!

Kimberley
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PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
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Join Greg Farro and Ethan Banks from Packet Pushers and Greg Ross from Paessler for a discussion about smart network monitoring with PRTG.  Ethan, Greg and Greg discuss strategies for monitoring your IT infrastructure, how to deal with the complexity of monitoring large networks, and how to glean actionable information from multiple data points.

Listen to the podcast to learn how network monitoring can identify issues in your network before they impact your users.

Please note that this podcast was sponsored by Paessler.
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Data center, now-a-days, is referred as the home of all the advanced technologies. In-fact, most of the businesses are now establishing their entire organizational structure around the IT capabilities.
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Quality of Service (QoS) options are nearly endless when it comes to networks today. This article is merely one example of how it can be handled in a hub-n-spoke design using a 3-tier configuration.
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Network ports are the threads that hold network communication together. They are an essential part of networking that can be easily ignore or misunderstood, my goals is to show those who don't have a strong network foundation how network ports operate.
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by:jorge diaz
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Thanks for pointing it out Gauthier.

Thanks for the comment Jim.
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Expert Comment

by:Naif Almarzuqi
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Excellent article, easy to understand
Thanks Alot
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Managing 24/7 IT Operations is a hands-on job and indeed a difficult one. Over the years I have found some simple tips and techniques to increase the efficiency of the overall operations. The core concept has always been on continuous improvement; any process that is introduced needs to be adjusted / optimized depending on the work condition and team members.

IT Operations needs to be constantly improved in order to respond to business needs. Below are some of the tools that have helped me to increase efficiency:

1.      Task Calendar
Maintain a list of tasks at hand and assign them to respective team members with target dates. Don’t be too specific with the target dates unless specifically required, I usually iterate to one or at most two levels .i.e. Month and then week. For example ‘ task A’ needs  to be completed by 2nd week of 3rd month. Distribute the list to members in advance and make sure that you follow up so that tasks are completed on time. By listing the tasks in this manner I believe they are easy to track and execute.

2.      Pre-Planned Meetings for the whole year
Scheduled meeting in advance on periodic intervals from the beginning of the year. This will help you keep track of the progress and make adjustments before things get delayed. I usually plan meeting for yearly targets, projects and scheduled activities.

3.      Purchase Calendar
Managing IT operations require renewals and purchase of Software and SLAs. It’s hard …
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by:Karisma Sand
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Awesome content that help me very much!
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by:SaadAhmedFarooqui
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Thanks :)
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Imagine you have a shopping list of items you need to get at the grocery store. You have two options:
A. Take one trip to the grocery store and get everything you need for the week, or
B. Take multiple trips, buying an item at a time, to achieve the same feat.
Obviously, unless you are purposefully trying to get out of the house you’d choose “A”. But why do we so often times choose “B” when it comes to our data transmission performance? The key metric here is efficiency.How many trips do you want to take?

MTU…says you need to buy Milk in 1 Gallon containers rather than by the ounce!

MTU is an acronym that stands for the Maximum Transmission Unit, which is the single largest physical packet size, measured in bytes, a network can transmit. If messages are larger than the specified MTU they are broken up into separate, smaller packets also known as packet fragmentation or “fragmented”, which slows the overall transmission speeds because instead of making one trip to the grocery store you are now making multiple trips to achieve the same feat. In other words, the maximum length of a data unit a protocol can send in one trip, without fragmentation occurring is dictated by the MTU value defined.

Do I Really need to Manually Correct the MTU Value?

The correct MTU value will help you select the correct shopping cart size in order to be the most efficient in your grocery shopping so that you don’t have to take multiple trips. Shouldn’t I just leave…
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by:Jason Shaw
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Would changing the MTU on on-side of VPN tunnel cause any issues with VPN ?
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by:Blue Street Tech
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Hi Jason, I assume you are only changing it on one side of a VPN tunnel. If I am correct, then it would only benefit one side of the connection. So if that connection is having the issues then it may remedy the problem, however for greater efficacy I'd do both ends (they most likely will not have the same MTU).
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What does it mean to be "Always On"?
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What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

As dyndns has reduced the capabilities of the free service, I looked around for other free providers of Dynamic DNS service.

After testing several I decided to move my DNS hosting to Hurricane Electric as then domains that require dynamic hostnames can be managed with dynamic A records instead of the CNAME required when using the dyndns free service.

The configuration as below is for IPv4 dynamic addressing as provided by most Internet Service Providers on ADSL or Cable (broadband) connections when using the free DNS and DDNS service as provided by dns.he.net

The below has been tested on a Cisco 1812 running c181x-advipservicesk9-mz.151-4.M4.bin on a BT FTTC connection which uses PPPoE over VDSL where the PPPoE interface has a dynamic address. It has also been tested on a Cisco 877 running c870-advipservicesk9-mz.151-4.M4.bin on several other UK ADSL and ADSL2+ connections

It does not cover changing the IPv4 termination address for a he.net IPv6 Tunnel.

In Global mode

ip ddns update method <method-name>
 HTTP
  add http://<f.q.d.n>:<password>@ipv4.dyn.dns.he.net/nic/update?hostname=<h>&myip=<a>

Open in new window


Then on the dynamic addressed interface (usually Dialer 1)
 ip ddns update hostname <f.q.d.n>
 ip ddns update <method-name> host ipv4.dyn.dns.he.net

Open in new window



<method-name> This is the name that you want to give the DDNS update, I usually use dyn.he.net
<f.q.d.n> This is fully qualified domain name that is configured for Dynamic DNS on the …
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When replacing some switches recently I started playing with the idea of having admins authenticate with their domain accounts instead of having local users on all switches all over the place.

Since I allready had an w2k8R2 NPS running for my access points I thought I'd use that. Though there are plenty of examples to find, none of them worked for my specific setup (I think it is the R2). So what better place there is to put one but here at EE.

Here we go.

First, if you haven't allready done so, install NPS on your server:

-Start server manager, right-click roles and choose 'add role'.
-In the Server Roles screen, tick 'Network Policy and Access Server'
 Select role(Here it's allready installed)

-Now do the 'next', 'install', 'finish' part and presto! NPS is installed.


Now we need to configure the NPS so the switch(es) will be able to authenticate against it:

Radius client

-Start NPS: Start->Admin Tools->Network Policy Server
-On the left side, go to: RADIUS Clients and Servers->RADIUS Clients
-Right click on 'RADIUS Clients' and select 'new'
 New client
-Under the settings tab, choose a friendly name for the client so you can identify it.
-Enter the ip address of the switch.
-Enter or generate a shared secret.
 New client 2
-Go to the Advanced tab and change the vendor name to 'Cisco'
 New client 3
-Click ok and the client is finished.

Connection Request Policy

-On the left …
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Expert Comment

by:WCPSTECH
Comment Utility
Thanks for the article.  Your instructions worked seamlessly.
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Expert Comment

by:KinnyAdelaide
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Pardon me as im not really knowledgeable. The switch IP is interface IP that is connected to this R2 server? What if you would like to configure it on another switch probably 4 or 5 hops away? Or do we just put the router ID as the ip address? Or do we put it on the interface ip address that we would like the policy to be applied, where the traffic comes into it? Then again, we are not only talking about authentication but firewall policy that defines authorisation.
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How would you tell what computer was using up all of your Internet bandwidth ?

If you cannot answer this question, this article is for you.  

The solutions below should work with just about anything using established standards rather than proprietary software. Some commercial firewall appliances will already tell you this info. For this Article, I do refer to Sonicwall, but the suggestions will provide valuable information regardless. The resulting information is extremely valuable to have when there are problems (either real, or just perceived by your users).

Now, if budget was not a problem and there was a pressing need to just purchase something, I would probably purchase the PRTG Network Monitor ($380) or Solarwinds Orion NPM ($2475) because they will work with just about anything and aren't tied to Sonicwall.  They can even collect usage from packet sniffing so will work with ANYTHING.  

The quick answer may be able to just download and configure Passler PRTG trial or free version or AdvancedRM to get what you need, if needed "now".  Both of these utilities rely on SNMP.  PRTG also can collect info a few different ways and is more versatile and comprehensive.  Free version is limited to 10 sensors but the commercial version isn't that expensive compared to enterprise consoles.  If you enable the SNMP services on each of the servers and user systems as well as the Sonicwall, you can compare charts and get what you need.  

Being budget concious, what I …
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by:J Spoor
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Overall a really good document !
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by:Kimberley from Paessler
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Hi cybervzhn_tech,

Yes, a good article!  I wonder if you could update the parts about PRTG, since there's been a significant change in our licensing since 2010.  In particular, the 100-sensor licence which was $380 is now free!  The first paid license is now the 500-sensor license ($1600).  Could you please update the price from $380 to $1600, and then later in the article, where you talk about 10 free sensors, update this part to 100 sensors?

Thanks!

Kimberley (from Paessler)
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Network Operations

9K

Solutions

11K

Contributors

Network Operations includes asset management, help-desk supervision, security and user policies, infrastructure administration and anything else that affects the operation of your network. Discussions will include those of best practices in platforms, configurations, performance, security and accounting.