Kentik Reviews

We mainly use it for visibility into our traffic but we use it for DDoS detection as well.

We're the third-largest tier-one in the world but, prior to deploying Kentik, we were flying largely blind regarding our IP traffic. We didn't have any kind of visibility into where we should be upgrading capacities. Gaining visibility into the traffic with a network at our scale has been huge.

We've been able to do traffic analysis when we're looking at bringing on a customer or, more specifically, when renewing and re-terming a customer. We can take a look at their traffic profiles and put dollars and cents around it. What does it cost us to haul this customer's traffic? Are we making money on this customer's traffic? How much are we making? That allows us to gauge where we can do things, re-term-wise, and still make money. 

We can also do customer prospecting. We can look at our traffic and say, "Hey, here's traffic, either to or from networks, that aren't on net. If we were to bring them on net we would be monetizing traffic that we're currently handling either for free or in some other way. If we were to bring it on, we'd be making money from it.

It has also helped our organization to save money in backbone planning. Previously, if a specific path was full, we would have to throw more bandwidth at it. I think that's what a lot of networks still do. Kentik allows us to see where traffic is really going and coming from. So we've been able to be much smarter about where we choose to upgrade paths. Throwing bandwidth at it costs adding however many more waves. If the traffic goes between A and C instead of A and B and that path happens to be $1,000 a month cheaper, we can make those kinds of changes. We've definitely been able to save money that way.

In addition, the drill-down into detailed views of network activity very much helps to quickly pinpoint locations and causes. We have a handful of saved queries, especially for some of our guys in the NOC who may not be senior-network-engineering-level types, that can be run. It lets them see things at a high level and say, "Okay, there's a spike here." They can drill in from there and get what they're actually after. It's generally DDoS-related in that specific scenario.

We have also used Kentik's months of historical data for forensic work. It tells us what the heck happened. When you're in it, you're just trying to do what you can to get things working again. That historical view allows us to go back and say, "Okay, we had this major outage last week. We know that it was partially due to this, but what actually happened and what was impacted by what was going on?"

Kentik has also decreased our mean time to remediation, with DDoS especially, but also with peering-related issues. We're able to identify and do stuff there as well, more quickly than we were previously. Shooting from the hip, I would say it has decreased our MTTR by 20 percent.

The most valuable features have been anything around traffic engineering: being able to determine the source or destination of a surge of traffic, whether it's DDoS-related, or a customer just happened to have a sudden uptick in traffic. Being able to tell where that's coming from or where it's going to enables us to do things based on that. Prior to having Kentik we were totally blind to that level of detail.

We haven't seen anything else that comes even close to Kentik's real-time visibility across our network infrastructure, and we've demo'ed everything under the sun. We're fans.

We also use it to ingest metrics, log data at scale and business context information, for network analytics, primarily around traffic profitability analysis. For that purpose, it works pretty well. We're able to get traffic statistics, in an adjustable way, out of Kentik and then we marry them with our financials. Bing, bang, boom, we know what our traffic actually costs us.

Version 4 of the platform is good and going in the right direction. It's starting to answer questions before they're asked. The mindset to date has been, "Hey I've got a question. Let me go Kentik to get the answer." They're moving more in a direction where they are saying, "Hey, here's information that you may be interested in or may need," before the question has to explicitly be asked. Continuing to move in that direction would be a good thing.

We've been using Kentik for about three years.

The stability has been great.

We get emails every now and again that say, "We're going to be doing something," or "We've got maintenance," or, "There was a five-minute outage." We've never been impacted by it.

Using it as a service, it scales indefinitely for our use purposes. That's why we did the as-a-service solution. Scaling is their problem. We didn't want to worry about it. From our vantage point, it scales to infinity.

All in, there are between 30 to 40 people who use it on a regular basis. We certainly have more users in the system than that, but there are 30 to 40 at a given time. They are mainly our engineering which includes the peering guys, myself and my team, and our core backbone guys who handle mostly long-haul stuff. Within our NOC for troubleshooting, there are a number of people who use it. And we've created some custom dashboards for our sales and sales engineering folks. Those dashboards make data easy for them to digest. They can go in via a nice, pretty portal. They type in a network they might be interested in and then all the data that they could possibly want, in an easily digestible format, is right in their faces.

We definitely have plans to increase usage. We'd like to get it into the hands of more of our salespeople. Only a small fraction of them are currently using it, mainly the guys in the carrier space. I'd love to get it into the hands of our enterprise people as well. But there are limitations on our side, including available cycles to get our guys up to speed on that kind of thing. The other thing we've also looked at doing is potentially opening it up to our customers and giving them a view into their traffic. We haven't gotten there yet, but those are things we've looked into and are looking into.

Our interactions with their tech support are very good. Response times are generally measured in minutes, which is nice to see. You don't see that very often. They take ownership when we have issues. But it's usually more questions from our side than anything else. They're on it. They actually care, which you don't see very often in customer support areas.

When there is something missing, we are generally able to go to them and work with them on it. Within a reasonable amount of time, it's generally added. At the moment, we've got what we're looking for.

The last issue they helped us with was due to the fact that we do a lot of traffic engineering, especially as it relates to peering. Once we got Kentik we'd say, "Hey this peer is congested. Let's go take a look at what the source addresses are or the destination addresses are so that we can do some traffic engineering around that." They added in a mechanism that allows you to do that whole exercise with the click of one button, which made life for that specific path a whole lot easier.

We communicated that to our customer success rep.

We were using a homebrew solution previously, which was not NetFlow based; it was BTU-based, which was vendor-specific. We are, obviously, a multi-vendor shop, so it only gave us limited visibility.

We switched to have the ability to see much more than what we were seeing. Kentik was platform-independent. There was also the fact that compared to what they were offering, nothing else on the market had the same feature set. Kentik already had more, and that was three years ago. They have been innovators in the space and have continued to push on the available features since. And most important, for us, was the price point. It was highly competitively priced. It was a no-brainer.

We did look into the on-prem option. Within our group, we're just not set up to do that. We're not server guys. And the pricing on the as-a-service-solution was such that it still made sense to go that route for us.

It took us about a day-and-a-half to fully deploy. It wasn't that big a deal.

We had to roll out the device-level config that would start exporting the data to Kentik, but that was incredibly straightforward. There was no impact to doing so. We automated that and were able to push it out to our entire network in about that day-and-a-half, and we were fully up and going without any kind of hitch.

On our side, it was just me who was involved. It was super-simple. I wrote a script, it deployed, and we were up and going.

And there is no overhead when it comes to maintenance.

It's hard to quantify ROI. How do you put the numbers around our use? Anecdotally, we definitely feel we're getting value from it. We are a fiscally conservative organization, and when we've renewed with Kentik it's never even been a question. It's, "Yes, we're renewing."

Without speaking directly about numbers, it's about the cost of a cross-connect, per device per month. Of course, some people are paying $50 a month for cross-connect and some people paying $500 a month for cross-connect. With volume, etc., it's somewhere in between. But with a network of our size and scale, we've got the volume such that we're able to get pretty aggressive pricing on things that we consume.

There are no other costs in addition to the licensing fee for us. It's one-and-done.

We've checked out Arbor, SolarWinds; you name it, we've tried it. We've had some in-house-developed stuff that we tried for about a year. Kentik really blew everything out of the water.

Arbor had a lot of what we were looking for. The problem is that they quit innovating a decade ago, and their price is ridiculous. Arbor is also device-based. You have to stick a big, massive machine in your network and each of those only supports up to about five devices. We're in an environment where we have hundreds and hundreds and hundreds of core devices. So that obviously wouldn't have scaled.

Go for it. The other solutions out there just don't compare. It has definitely been worth it for us. Anytime anyone asks us, we definitely recommend it.

We were expecting to be able to see and understand more about our traffic. I don't think any of us thought we would rely on it as much as we now do.

We have looked into making use of Kentik's ability to overlay multiple datasets onto our existing data and it's something we are thinking about. We're just not there yet within our organization.

It gives us visibility into stuff going on in our network but I don't think it necessarily helps uptime. Where it could help uptime is for specific customers when it's DDoS-related. It helps us quickly determine what's going on with DDoS, where we couldn't have before. But for our network, as a whole, it just allows us to see what's going on. It doesn't do anything itself.

It doesn't improve on the number of attacks that we need to defend. The internet is a wild place. With a network of our scale, there is something under attack literally every minute of every day, every day of the year. What it does is allow us to see quickly — immediately — is what is actually going on, and then take actions around that.

I rate it a nine out of 10. We're happy with it.

For our purposes, where we're at today, and even in the past, to analyze flows and to pull specific data and understand where our traffic is going to — which AS path — that's primarily the value that I extrapolate from Kentik.

It's mostly on-prem. We do some stuff with GCP and AWS, but it was all primarily licensed-based, based on the number of pieces of equipment we have on-prem that we actually attach it to. We have over 55 edge nodes and about 10 compute nodes.

We can actually see what we're doing now. When it comes to making an educated decision on a number of things, if you have no visibility into what you're doing, you really can't make that decision. Collecting that data and having those metrics first-hand, in real-time, allows us to make an educated decision, versus an uneducated guess.

Kentik has proactively detected network performance degradation, availability issues, and anomalies. When we had no visibility. When we had congestion, things would actually happen and it was hard to troubleshoot as to where they were coming from. That was one of the first things we were able to do. 

A specific example is where we had a number of tenants that were created that were getting DDoS'ed. We couldn't understand how or why we were getting DDoS'ed because we had no visibility. We were guessing. Kentik opened up and showed us where the traffic was coming from and how we could go about mitigating.

It lets us understand what those attacks are, versus not actually knowing where they're coming from or how they're affecting us. It cuts down the time it takes for us to troubleshoot and actually mitigate by about 50 percent, guaranteed, if not more. But we're running a bunch of GRE IP sectionals. It's not like we have huge amounts of capacity. But for some of our large customers, it really has helped us detect what the problem is, instead of guessing.

At my previous company, it improved our total network uptime by about 20 percent. I wouldn't correlate that back to Kentik in my current company.

The most valuable feature is being able to pull traffic patterns; to and from destinations. We're able to understand where our traffic is going, our top talkers from an AS set, as well as where our traffic's coming from.

The only downside to Kentik, something that I don't like, is that it's great that it shows you where these anomalies lie, but it's not actionable. Kentik is valuable, don't get me wrong, but if it had an actionable piece to it... I keep telling them, "Man, you need to find a way to make it actionable because if you could actually mitigate, it'd be huge what you guys could do."

The way things are, we have to have some sort of DDoS mitigation, like Arbor or something of that nature. Once the anomaly is detected, that's great, but then you have to mitigate. If Kentik had mitigation, or if they could acquire a solution and throw it onto their platform and have that portion available, that would be huge.

I have been using Kentik at this company for about a year and, prior to that, I used it a previous job for about another year.

Coming into this company, I felt they were flying blind, meaning they didn't really have anything from a monitoring standpoint. They didn't understand how decisions were made. And to make educated decisions, you actually have to have the proper tools in place. Kentik was a tool that I know works really well.

Kentik has pretty good intuition, as a company, as to where the market sits and what they're into. They don't delude themselves. They really focus. They've been pretty good. I know the leadership over there and it seems like between Justin and Avi, they're good at what they do and that's why I'll continue to use them.

Anywhere I go, I'm going to use Kentik if I have the chance.

I am in what's called the "data explorers," which is our organization's free-form, "write your own database query with a GUI" to get some numbers out. I do that because I'm usually looking to solve very specific problems or to get very specific questions answered. I'm very familiar with the GUI and it does what I need it to do. 

For our company, one of the major uses of it is in our sales organization. They run a lot of customer prospecting using it. Using the API stack, we ended up writing our own, internal sales tool webpage which does a lot of queries on the back-end to get info from the on-prem database.

We are using the on-prem deployment. We did use the SaaS version initially for the test, to see if it met our needs, but for production we decided to go for the on-prem deployment. The reason we went with the on-prem — and I'm not involved in the purchasing aspects — was because at the level of our flows and data rates, when you're doing the cloud solution you're also paying for the hardware. I believe it was determined that a one-time cost for us in buying the hardware, and then just doing the software license part, ends up being more cost-effective. I cannot speak to anyone else's particular pricing model or the amount of data they're sending. That may make it a very different equation. I have a feeling that the on-prem would really only work for the really large customers.

For our organization, the sales-prospecting is really invaluable. We had a previous tool that I wasn't really involved with but which was, to my understanding, very hard to use and which was — I won't say misdesigned — but designed strangely. With this tool I have been able to work with some of the front-end sales-developer people to tighten down the queries that they wanted to use to get the information out. Once they had that, they could go into their sales portal and put them in there. I can help them with the information because I know what it's coming from. I help them make queries: for example, "The customers in New York who are going to Chicago." Whatever that turns out to be, I know what it is. Whereas, with the other tool I didn't really know necessarily how it was working along its model.

We also have alerting from it for attacks and capacity utilization, which we didn't have before. The great thing about it is that it doesn't say, "Okay, this link overloaded," but it does what's called planning or trending. It says, "Hey, this IP usually has ten hosts talking to it. In the past hour, it has had 10,000 hosts talking to it." It will show things that might not necessarily be a situation where something is being overloaded, but which are still events that happened on the network and which we wouldn't have seen before at all.

Kentik has also helped to decrease our meantime to remediation in the case of attacks. We're able to pull out the IP that's being attacked and take action on it. Before we couldn't find that out easily. That process has gone from slow to fast. Attacks happen no matter what. We have a lot more visibility into them, we can see where they're coming from and that has definitely helped us take action against some of our customers who are continually launching attacks. Maybe it's decreased the number of attacks in that we have found out the customers who were doing them and terminated them. But the tool itself doesn't help us reduce the number.

Having the access to the flow. It gives me the ultimate exit type of stuff, which I wouldn't get in a basic flow-analysis engine. Also, I am able to do a lot of work on the visualization end to create different visualizations and different ways to get information out of it.

The real-time visibility across our network infrastructure is good.

The drill-down into detailed views of network activity helps to quickly pinpoint locations and causes. All the information is there. As an organization, we're still trying to figure out the best way to use it across all different skill levels. I worked with some of the sales developers to get a sales view. I'm working with the NOC to get a NOC view, because it is a very information-dense product. Someone who doesn't know what they're doing will easily get lost in it. But it does light up dashboards and views for people who aren't as skilled with it, to answer questions easily.

I would like to see them explore the area of cost analysis.

We started with a trial just about two years ago and then we signed the contract for it at the end of 2017.

The stability is fine. It's a software product so they are going to be issues. There are problems that happen with it occasionally. They notice it, they send out a message, and it gets resolved. But there are no qualms at all about stability.

As far as the hardware goes, I can't speak to that. Hardware is as hardware does, but I presume they have enough stability or excess — spare capacity — in our cluster that I don't hear about anything. Every once in a while I'll hear that a fan died, a hard drive died, but there is no impact to the function of the platform.

The scalability is great. We've had no issues with it. Our network is very large.

Obviously, you want to be a little — I don't know say cautious — but a little aware of what you're doing. It's the same thing as when you use a database. If you run a query: "Show me all zip codes starting with two," you're going to get a huge number. What you really meant is, "Show me all the zip codes starting in two in Maryland." That's a very different query and that will get you a much faster response because you're already only looking in Maryland. Without having someone to help guide you through that process and who knows what a database does, it's very easy to write bad queries.

One of the great things about this product is that it takes away that "middleman," that developer between the user of the tool and the raw database. At many companies, you have the database of customer information, for example. Then you have the users of that data who need it to make tickets and resolve issues. And in between them, there's a developer who figures out what the customer service people need to know: "Oh, you need to know all tickets of this customer in the past week." Or, "You need to know all the tickets that are open right now." The developer pre-writes those queries for them so they don't have to do it. What Kentik does is it eliminates that layer. I can slice data any way I want on the platform. But with that comes the caution that, if I write a query that is stupid, it's going to take a long time. There are ways to write queries which are smart and ways to write queries which are stupid. That's where it does take a little bit of time to understand how it works. Once I know how to do it, I can easily help other people make dashboard queries so that they don't need to know that.

Tech support is very good. They have a form on their front-end where you can submit a problem request. The cool thing about is it is that it takes a snapshot of the query that's being made so they can immediately see what you're looking at. If you have a problem like, "Hey, why does this graph have this jump here?" they will see that right away, and then you can go back and forth with them. I've been working with them a lot on different issues and I've always had very good support from them.

The previous tool we used was an internal module we developed. The previous solution was very sales-driven. It wasn't very good and it was not our main expertise. We had a programmer-and-a-half doing it. There were two parts of the problem. One part was data ingest at our scale. How do you ingest this much stuff? And the second was how do you visualize it? Those are both hard problems that are different from one another. Our skill set is not really that good in either one. It was easier and made more sense to outsource those aspects to people who do know how to do that.

The initial setup was straightforward. We had the on-prem deployment, so they sent us a list of the stuff. I wasn't involved in the setup of the hardware, but our data center guy said it was straightforward. You put this rack here and plug this in. And as far as the computer equipment goes, the great thing about NetFlow is that it is a very standard industry protocol. It is what it is and it's pretty much done. 

In terms of how to best utilize the information you have and what you know about your network, and to give it to the platform in a way that that is good, that is still very easy for a network like we have. But for someone who is a lot less rigorous about their internal typography or typology or descriptions or other meta-information, they may find it harder. You don't need to be doing best practices, just reasonable practices. If you're already doing reasonable stuff, it'll be okay. But if you don't have very good standards for your network in terms of descriptions and the like, you're going to have a bad day. But you were already going to have a bad day. It's not fair to knock the platform for that. There needs to be some way to get that meta-information into the platform, to be able to say: What's a customer? What's a peer? What's a core link? If you can't do that, then you have other problems. 

We signed with Kentik at the end of 2017. There were a couple of months where we were spinning up the hardware, where we didn't really do any setup. They sent us a list and we did some due diligence to make sure that we had the right buys, etc. It's going to be different for an on-premise versus a cloud solution. But once we got up and running, things went very very quickly. 

If you practice good practices in your network, it's very easy. If you have a very sloppy network with bad descriptions, where you can't write a rule that says a description and starts with "customer" is a customer, and a description that starts with "core" is a core, but they're all just "port to go" you're going to have a bad time. That's really work that needs to already be there in a good network. Our network was already designed with a standards base. So our setup was very fast. It took weeks if not days. Once we put the first few routers into the platform to make sure how the API was going, we were able to run all the rest through.

It took one to one-and-a-half people for the setup, excluding the on-prem hardware installation, which I wasn't a part of at all. I'm not a developer, so we had a developer who did the API work to add them into the platform. I guided that API work. It's really not that complex.

We did not work with a third-party. You absolutely do not need that. This is not like HP OpenView or a Salesforce, where you need people who know the system to get going. The API is very easy to use. There's not a ton of Salesforce-level business logic in it.

Basically, it's a NetFlow collector, ingester, database, and a UI front-end to make reports. While it depends on how much in-house capability you have, most people should be able to do this without a problem.

I can't give you numbers. It's something which is very hard to quantify. I have no idea what the investment is, and how do you calculate the return. Is the return that a salesperson closed a deal that they wouldn't have before? I'm sure somebody could, but beyond "good," I wouldn't know what to tell you about ROI.

It's a great product and the company is great. The company iterates and they move fast to add new things. When we did our first trials, almost two years ago, more than once, although not routinely, I would see a missing a filter set. You could filter on this element here, but you couldn't over there, and that's an error. I would put it in as a request and it would get resolved, sometimes in hours. The responsiveness is great.

It really takes a while to figure out the best way to use it for yourself. There is just a ton of information in there. Don't get dissuaded at first. They will help you work through it. You will need to understand your network, and you will understand your own network very well by the end of it.

The biggest thing Kentik has given us is the amount of visibility we have into our own network now and knowing what's going on at a given time. It's giving us the detailed NetFlow records and the ability to visualize them with different tables, with different timeframes, with different filters. It really provides a lot of detailed information on what's going on right now that we just didn't have. It may not have changed the business, but being able to know, "Hey this customer is always sending traffic to Spain and they stopped for two days. And then they started again." What's going on with that? The more information we have to give to our staff about what's going on in the network, the happier the customers are.

Things are moving in different directions at a global or industry level: Old-ops versus AIOps versus DevOps, etc. We are not a very large company, so a lot of these other things are, to my mind, kind of "buzz-wordy" to an extent. I know that they're moving in that direction with V4, which is good, but for me I just want to know exactly what I'm putting in and what I'm getting out. A lot of solutions I've seen in the past that have been very "hand-wavy". They will tell you when they see trends, but they aren't really good at the stuff I need to do. I need to say, "Hey, this line is overloading. What do I need to do right now?" It's been really great to have that ability to go in, put down exactly what I want to look at and get the answers right away.

Of course, if you want to answer more complicated questions, there are limits to how easy you can make it. If you are asking a very complicated question, you need to know what you are doing. It's like any real intelligence or NetFlow analysis tool. It can get complicated if you're asking complicated questions. But the great thing about it is that it does expose all that functionality. So if you want to ask a very complicated question, you can do that.

In terms of the solution's months of historical data for forensic work, we don't have much call for that level of analysis. We do have the 60 or 90-day retention for the full data set, but we haven't had the need to go back that far for that resolution. That doesn't mean we won't. But as of right now, if we do have an issue with abuse, where we need to look at the full data set, we're doing that within a couple of weeks or even a week. So for us, it has not been a plus that we've had the whole data set for the 90 days, but that's what we decided to do when went with the on-prem.

We don't do any public cloud. We don't use it for any threat stuff like that. I could see an enterprise using it to be able to pull in stuff from Google Cloud or Amazon cloud — known routers. We don't do any of those kinds of things. We're trying to figure out the way for us to do it, to feed the list of customers who have bots on their network back to our abuse team to handle. We have that information available to us. We just need to figure out the right way to handle it as an organization.

We're a very small personnel organization and we don't deliver a lot of products. We just deliver one product. We don't do security or cloud.

I wouldn't say it has helped to improve our total network uptime, but we're not really using it for that purpose. Obviously in an attack we would see what happened, we can see traffic shift and take action based on that traffic. But I wouldn't call that actual downtime. Things got overloaded and now they're not overloaded.

In terms of maintenance, it runs by itself. For the on-prem, we bought the hardware and they monitor the servers because it's their own software running on it. We'll get a mail saying, "Hey, the fan on this is funny?" We can just swap it out. Beyond that, there really isn't maintenance per se. 

I just say to the business units, "Hey this data's here. What do you want?" I sit down with them and figure out what they want and how often they want it. I then walk them through how to use it for themselves. One of the great things about it is that it's really just a front-end GUI to a database. But that's also a downside of it because it's really complicated. Someone who doesn't know anything about a database is going to have a hard time. But, if I sit with someone in our company and say, "What is it you want to know?" I can walk them through how to do it and, at the end of it, leave them with a dashboard and they can do it. It really depends on their own initiative and what they want to use it for. 

The number of users in our organization is less than ten. The sales team is now starting to use it, but they're not really using the product itself. They're using our internal sales page which makes API calls to their back-end to get graphs. They're not really users in the sense that they're using the UI, they're making queries, they're making dashboards, or playing with all the parameters. They just have a constrained view that the sales development organization said, "This is what I want them to know. Give it to them." Those few hundred salespeople are using it, but they're just really consumers of the data that I, in consultation with the sale development people, said, "This is the data you're getting." Beyond that, there are a few in the NOC, people in abuse, people in planning, and me, who use it for different purposes.

We're using Kentik for flow data, so we can do things like peering management and interconnection research, as well as capacity management. We also use it fairly heavily in our tech cost-reporting so we can see things such as how many dollars per gigabyte and how much we're using.

The deployment model is cloud, which Kentik provides. 

Before using the solution, we had to do all these manual tasks, such as running all these queries manually, and building our tech cost-report used to be a two or two-and-a-half-week effort. Using Kentik, and the automation that it provides us, we've brought that down to a day or two, which is a massive time savings.

Our capacity managers would say the visibility and the dashboards have improved the way our organization functions. They can see, at a glance, which of our data centers is serving which countries, and that really helps them in their planning.

In terms of the solution's months of historical data for forensic work, we reformulated the way we calculate costs so we had to go back into the historical data and use that raw data to calculate the costs again. It wasn't necessarily forensic networking, but it was forensic cost and business work.

The queries, in general, are great, being able to add tagging to the flows. 

Having the API access allows us to do a great deal of automation around a lot of our reporting and management tools. I'm the manager of automation at our company, so for me, that's the big winner.

We're using the dashboard, but that's not as high-priority a use case for us.

We're also using Kentik to ingest metrics. It's a useful feature, and its response time, whenever we're pulling back the data, is higher than our on-prem solution. That's one of the points in its favor.

There is room for improvement around the usability of the API. It's a hugely complex task to call it and you need a lot of backing to be able to do it. I should say, as someone who's not in networking, maybe it's easier for people who are in networking, but for me that one part is not very user-friendly.

It's very stable. We have not had any issues that I've heard of since it was brought online.

So far we've been able to more than double and triple our use cases for it and it hasn't really even hiccupped. The scalability seems good.

We have data centers all around the world and Kentik is in every data center. We plan to build many more, and it's going to be included into each of those builds. We're using it globally and expect to keep growing its use.

Technical support has been very excellent. We've had many novel use cases which we've had to send back to them and their response times, and the solutions that they've given us, have always been better than satisfactory. They've met our needs and then some.

We're also using a competitor, Druid, which is an open-source version that we host on-prem. So we're actually doing both cloud and on-prem solutions. At the moment we use each solution to verify the other.

We decided to bring in Kentik partially because of cost. Our particular instantiation of Druid is enormously expensive. The director of capacity management wanted to spin up Kentik, originally as a PoC, to see what kind of data we could get out of it for a lower price point. But then he quit, and we're still just going along with it. Eventually a decision will be made between them, but initially it was cost that pushed us toward Kentik, to see if we could get more bang for our buck.

A related difference between the two solutions is that with Kentik, and the infrastructure owned by someone else since it's a SaaS solution, the overhead on our side is much lower. We're also not necessarily on the hook for dedicated infrastructure costs. So, the price is amazing.

With Druid, for every node that's recording all of this data that goes across the routers and such, there are no limits. With Kentik, occasionally, we'll drop data or we'll get a spike in the traffic that will make the data unreliable. That does not happen in Druid because it's not metered the same way.

So far, we have seen ROI by going with Kentik through the time savings I already spoke about, with the ability to automate. But there is also ROI just straight up on the cost. It's considerably cheaper, and from what we've found, the data is just as rich. It's a very meaty data point in some of our planning for the future.

We have an annual contract with Kentik that we renew each year for a set number of licenses. We also have some burstable licenses which we can spin up and spin down, and those are paid as they are used. We have 20 of those licenses but we don't get charged for them unless we use them.

Rely on the customer service reps. That would be my biggest piece of advice because they've got all the good tips and tricks.

The user base of Kentik in our company is very small, about 15 people or less. That includes our interconnection managers, peering managers, and capacity managers, as well as my small team of software developers.

For deployment and maintenance of the solution it requires one person or less. Nobody needs to make it their full-time job, which is nice. Those responsibilities are spread across several people. One of the interconnection managers helps me, for example.

Overall, I would rate Kentik at eight out of ten. The fact that we can lose data whenever we have traffic spikes, which our business does pretty regularly, is what would keep any solution from a ten, because I can't always, for every data point, say this is accurate. Occasionally there's an asterisk next to the data.

• Dashboard visualization: I have come to rely on Kentik for a constantly refreshing view that I can quickly customize. There are a lot of graph options, including a flow diagram that shows how traffic has moved over our platform.

• Kentik Detect: The Detect section of this product provides an excellent way to utilize flow in order to produce alerts. It is very flexible and allows for a number of interesting customizations.

• Sankey flow diagram: It shows the path that the data takes through my network and in turn allowing me to troubleshoot many issues, without running through a crazy amount of device configs.

• SQL query: You can directly query the database that Kentik keeps and, via API calls, make it something you can easily integrate into your own product or monitoring tools, or just to produce reports with metrics that might not be a Kentik feature yet.

We have put it on half of our large monitoring screens. Sometimes, it is actually easier to identify and attack incoming traffic using Kentik, than it is to use our own gear.

Even when we know what the traffic is, it allows us to jump directly into the next steps of our process more quickly, since we can visually see everything in one place and on one screen through the customizable dashboards.

Instead of just total traffic in bits or packets, we can get protocol, destination port, TCP flags; everything you might want.

Kentik has been remarkable at anticipating the design requirements of their customers. They have provided everything that I might want already. After using it for over six months constantly, I am still discovering new things.

The only times I’ve felt that “I wish I could use this to XYZ,” I’ve contacted support and it turns out that I can do that already. However, I just didn’t know if I could do it using the existing controls or via a combination of query types.

Perhaps a better explanation would be to see how tagging is captured and a method of comparing my tagged interfaces on Kentik’s side. Right now, I can go in and look at all of the interfaces that they’re receiving the flow for and also sort/filter it, but there is no way for me to easily compare them between my nodes. I need to add, though, that’s really not a missing feature of their product; it is just a way to help troubleshoot my own (potentially broken) systems.

I add the tags to my own devices, not them. However, if we’ve made a mistake on our side, it’s a basic row-by-row comparison. I believe there is a way to use their SQL query feature to pull a better comparison but a method of using the GUI would be nice.

I have used this solution for about 6-8 months. For five months, I have used it as a standard user. Now, my organization created a separate admin account for me, so in total I have used it for eight months.

We have not experienced any stability issues. Other than the planned maintenance, which is short, it is always available and working great.

There have been a few very minor bugs; for instance, the auto-refresh was not working on the dashboards. When we notified them of it, they responded in less than an hour; they had replicated the issue and were working on a fix. A day later, it was done.

We have not scaled the product past the current level we are at. However, I don’t see that could ever be an issue. You just send them the flow from your devices.

If you’re scaling, you make sure your interfaces are sending the data and you're golden.

The level of technical support is beyond any vendor that I have ever worked with before.

The service is totally hosted by Kentik, with a web portal and API. I have not had issues with it being available to use. I have not tried to get to it expecting it to be available and had it not load. Occasionally we’ll get an email or pop up notification on the Web UI that planned maintenance will take Kentik down for an hour or so, these come a few days in advance of the planned service.

The only issue we have had of a technical nature was with their dashboards. Dashboards are a custom page you build and layout manually with different “Data Explorer” queries, then you turn on auto-refresh and let it continue to build the graphs as time moves on. This auto-refresh feature stopped working after an update to the Kentik UI’s look and feel. When we noticed it was not functioning we sent them an email, they responded back quickly and told us they had replicated the issue and were going to work on a fix. It was the next day when they told us to try it again, and they had indeed fixed it already! I rarely get such prompt attention to an issue.

I have used SolarWinds in another company. You get a very simple, non-configurable type of view with green, yellow, red and ingress/egress numbers. It doesn’t compare to the analytical capabilities that Kentik has.

It was set up before I joined this organization.

I am not a part of the purchasing or evaluation in any way. We still use Cacti for general stuff, but Kentik has replaced it on half of our boards so far.

While I was not a part of the implementation, if you know how to set up NetFlow on your device, just point it at Kentik. They have another setup option for a sensor that lives in your network. I have only heard of it; never used it or spoken to anyone that has.

This product is easily the best network monitor that I’ve ever seen or heard about.

The DDoS alerting was, at first, the most useful. It was able to alert the entire team of more than 20 that the issues with the website were actually network based, instead of, say, bad code. In time, we mitigated the DDoS attack surface, so the usefulness is still there. We just don't see it every day.

Now we use Kentik for more nuanced traffic insight. This is ad hoc usually, but we do email 'peering' reports daily to the lead network engineers. This gives them some view into new traffic patterns we are picking up in IXes.

I find it very useful to see when traffic destined for a prefix that we prefer ingress on in the East Coast actually ingresses or egresses on the West Coast. It shows the difference between BGP paths vs. regional expectations.

The alerting ability is greatly improved. I think there is some movement still to make this into a 'dumb mode' vs 'expert mode'. There is the SQL-like syntax, but that is expert+.

I have used Kentik for 2.5 years.

We rarely, if ever, had any stability issues.

I have not had any scalability issues.

Technical support is second to none.

We used in-house, hand-built things. All based on binary RRDs or worse.

Initial setup was very straightforward. Nothing I needed too much help with.

There is a large difference between BGP and normal nodes. I don't think this plays out to the best for the customer or Kentik. To be able to split off the BGP vs PPS requirements would be good.

We've evaluated almost everything except SiLK.

Use the technical support if you need it. They are excellent.

DDoS Alarming allows us to get a feel for the bandwidth of an attack and determine if mitigation is needed to prevent collateral damage. Secondly, the flow analysis lets us look at how traffic is transiting our network. This allows us to optimize metrics to reduce cost.

Kentik answers the flow question: what are my flows, where are they are going, and what can I do to better optimize my connectivity. Kentik also baselines flow behavior and can alert you when there are abnormal flows such as DDoS.

We now have real metrics on DDoS attack vectors and use the alerting dashboard to gather information used in CLI filters and eventually in RTBH.

Firstly, my Dashlane password manager attempts to fill in the dimensions field for me, so I just turn off my password manager when that occurs.

Secondly, sometimes its difficult to order the dimensions correctly when trying to make Sankey flow diagrams. It’d be nice if there was a knob somewhere in my users settings that allowed me to make the dimensions box a single column from top to bottom so I don’t have to spend extra time tying to drag a dimension into the correct column to get the order correctly.

I have used Kentik since April of 2016; usually four times a week.

We have not encountered any stability issues.

We have not encountered any scalability issues. Kentik allows us to set sampling of flows on a per device basis.

Technical support is proactive in letting us know when we accidentally stop sending them flows. Additionally, when asking for help in configuring BGP settings, they have expert level knowledge in CLI configuration of network devices.

We did trials on a few competitor solutions. They were too slow, too complex, and required lots of on-premises touches to fix their equipment. They crashed often and they had poor customer service.

Initial setup was relatively straightforward. We had to evaluate which method of flow export/ingestion to use, implement the samplicator instance and then send Kentik the flows. We also had to exchange some information for BGP and SNMP settings.

I’ve told others that they charge based on the amount of devices and provide a discount for education customers. In my role, I haven’t been exposed to the cost of the product.

We looked at Plixer Scrutinizer.

If they haven’t already decided to use it, I typically log into my portal and show them it’s capabilities. Then, I let them know they can get a trial for their network. If they have already decided to use the product, then I tell them they are in capable hands, because the customer support knows networks and servers very well.

Kentik is a mature software product and is provided as SaaS. This is very valuable to me, because I don’t have to maintain a server, worry about resources, updates to software or OS, hard-drive space, or backups. I can just use Kentik to get the data in the format I want, such as reports or ad-hoc information.

Good NetFlow visualization and analysis tools are valuable to anybody who needs to understand the traffic that flows in and out the network.

This solution helps with planning, security, and troubleshooting. Kentik’s data explorer allows easy access to all data, grouped by any variable. You can do a quick overview of the top ten users or peer performance with very little effort.

One of our Network Operations Centers has a large overview screen with a web browser that shows Kentik and the data explorer running. This provides a constant overview of live traffic sorted by the source port.

We use Kentik to monitor the network and get alerts from its alert module if there is a DDoS or other attack on our network.

Kentik is constantly improving. I have seen their alert portion grow this year to include a new Beta that allows you to use automatic mitigation with multiple platforms.

Kentik is used when customers call in to troubleshoot their internet service and to decide on new peering partners.

I would like to see more granular user and security rights. Currently, a user can be a member or an administrator. I would like to limit what a user can see, be it IP or interface. I would like to be able to give my customers access to the data explorer with just their data.

We have been using this solution for about a year.

We did not encounter any issues with stability.

We did not encounter any issues with scalability.

The technical support is very good. Emails to support@kentik.com are answered quickly and competently. Kentik keeps in touch, listens to feedback, and cares.

We used multiple NetFlow products. Kentik shines with the ease of running reports and looking at data.

I was involved in the installation. The setup was easy. Exporting NetFlow records is all that is needed. I also setup a BGP session with Kentik. This allows Kentik to see the AS path and to record it with each record as well.

The benefit in our case outweighs the cost. We use Kentik at the core of our network, which provides us with a central and detailed view of our traffic.

We have used open-source options such as NfSen and SolarWinds.

I would suggest giving it a try. A demo can be set up in no time. You can see for yourself whether or not you like it.