My main uses are device administration, wireless access authentication, and ethernet access.
Sr Manager Infrastructure at a financial services firm with 5,001-10,000 employees
Great network access control lets you know who's in your network at any time
Pros and Cons
- "I've had no issues with scalability. I started using it on two campuses, and now I'm using it across the country and scaling it across subsidiaries in other countries."
- "The most valuable feature is network access control for the users coming into the network, which allows us to know who is in the network at any given time."
- "The intuitiveness of the user interface could be improved."
What is our primary use case?
What is most valuable?
The most valuable feature is network access control for the users coming into the network, which allows us to know who is in the network at any given time.
What needs improvement?
The intuitiveness of the user interface could be improved. They could also make the deployment process more user-friendly.
For how long have I used the solution?
I have two years of experience with this solution.
Buyer's Guide
Cisco Identity Services Engine (ISE)
June 2026
Learn what your peers think about Cisco Identity Services Engine (ISE). Get advice and tips from experienced pros sharing their opinions. Updated: June 2026.
900,838 professionals have used our research since 2012.
What do I think about the stability of the solution?
ISE is very stable - since it was installed, I've had no issues with it.
What do I think about the scalability of the solution?
I've had no issues with scalability. I started using it on two campuses, and now I'm using it across the country and scaling it across subsidiaries in other countries.
How are customer service and support?
I've worked closely with Cisco for many years and have no complaints about their support. Sometimes it takes less than a couple of minutes to get through to their support team.
Which solution did I use previously and why did I switch?
I previously used Portnox, but it only gave us network access control, so we switched to ISE, which has more features like device administration.
How was the initial setup?
Deployment is usually tough the first time, though once you get it working, it works well.
What about the implementation team?
We used in-house engineers and an integrator.
What's my experience with pricing, setup cost, and licensing?
We have a three-year license. Standard licensing gives backup access and very few features, and then there's VM licensing - each VM we use needs to be licensed. VM licensing comes in different sizes: small, medium, and extra-large. There are also licenses for features, posturing licenses, and profiling licenses.
What other advice do I have?
Before deploying, it's a good idea to read up on the product first and then get some training so that when deployed, someone in the organization understands the solution. I would rate this solution as nine out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Co-Founder & Director at VSAM Technologies
Easy to configure with great functionality and good reliability
Pros and Cons
- "From a configuration point of view, it's simple."
- "The general usefulness of the product is not specific to a particular feature, as this is a comprehensive solution covering access to the network to create a zero trust environment, including Network Access Control, Network Segmentation and policy control, while integrating well with other Cisco solutions and offering very good functionality that is simple to configure, reliable, and scalable, with helpful technical support."
- "It would be ideal if Cisco could provide some short training videos or documentation to customers to help them understand how to use the product."
What is our primary use case?
The solution is primarily used for Network management and Network Access Controls.
What is most valuable?
The general usefulness of the product is not specific to a particular feature. This is a comprehensive solution covering access to network to create a zero trust environment. It covers Network Access Control, Network Segmentation & policy control
The solution integrates well with other Cisco solutions. It works both from a single-vendor perspective and in cases where the client might have a hybrid network and multiple security solutions.
The product offers very good functionality.
From a configuration point of view, it's simple. It's not very complex. I don't see any major challenges when using the product.
The solution is reliable.
The scalability is good.
We haven't had any issues with technical support. They have been helpful.
What needs improvement?
I have not come across any missing features.
It would be ideal if Cisco could provide some short training videos or documentation to customers to help them understand how to use the product.
For how long have I used the solution?
We have not used this solution for ourselves but implemented it for various organisation's.
What do I think about the stability of the solution?
The solution is stable and reliable. There are no bugs or glitches. It doesn't crash or freeze. The performance is good.
What do I think about the scalability of the solution?
This solution can work well for large enterprises that have a larger environment, such as a distributed environment. Mostly, from my organization's perspective, we deal with SMEs.
The solution is quite scalable.
How are customer service and support?
I've been in touch with technical support in the past. They are quite good. I am satisfied with the level of support they provide. I don't have any complaints.
How would you rate customer service and support?
Positive
How was the initial setup?
The initial setup is not very complex. All similar solutions will have a similar type of configuration as well, so it's pretty simple to figure things out.
In terms of how long a deployment takes, it primarily depends upon the environment the customer has. Customers might have a very basic environment wherein it might get done in a couple of hours or so. If it is a very complex environment and they have multiple policies to be deployed, then it could definitely take more time.
There aren't any challenges when it comes to maintenance. It's pretty simple.
What's my experience with pricing, setup cost, and licensing?
I don't handle the licensing aspect of the product. I can't speak to the exact costs involved.
We have not faced any major challenges in terms of getting a good price point from our customer's perspective. That said, the pricing would depend upon the perceived value of the solution rather than the actual cost of the product. If the solution is able to help the customer in mitigating its challenges many customers don't see any point in discussing the price point if POC is successful
What other advice do I have?
We are a system integrator.
The version of ISE we are using depends on the customer.
We primarily have the solution set up on premise.
In terms of advice, from a security standpoint, it is paramount for any organisation, to be secure, no matter its size (large or small). Having secure network access control will always make it safer & help organisation in attaining a zero trust environment
I'd rate the solution at an eight out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Buyer's Guide
Cisco Identity Services Engine (ISE)
June 2026
Learn what your peers think about Cisco Identity Services Engine (ISE). Get advice and tips from experienced pros sharing their opinions. Updated: June 2026.
900,838 professionals have used our research since 2012.
Sr Consultant at Tata Consultancy
It works the same globally no matter where you deploy it
Pros and Cons
- "The core point is that Cisco ISE is the same globally compared to FortiAuthenticator, and whether I deploy in China, the US, South Africa, or wherever, I can get all the capabilities, plus it allows me to directly integrate with 365, which is a good capability from a communications point of view."
- "Cisco ISE could be simplified somewhat. I would also prefer certificate-based authentication over confirmation-based authentication for all the processes. It's possible for us to do a workaround, but the process needs to be simplified."
What is our primary use case?
I'm using Cisco ISE for integration. We are currently using it for 82.X, but we are planning on using it for a different use case in the next couple of quarters.
What is most valuable?
The core point is that Cisco ISE is the same globally compared to FortiAuthenticator. Whether I deploy in China, the US, South Africa, or wherever, I'm can get all the capabilities. It allows me to directly integrate with 365, and from a communications point of view, that is a good capability.
What needs improvement?
Cisco ISE could be simplified somewhat. I would also prefer certificate-based authentication over confirmation-based authentication for all the processes. It's possible for us to do a workaround, but the process needs to be simplified.
For how long have I used the solution?
I've been using Cisco ISE for more than a year.
What do I think about the stability of the solution?
Cisco ISE is stable.
What do I think about the scalability of the solution?
I haven't really tried to scale ISE, but I don't think we'd face any challenges with hard gentle scaling.
How are customer service and support?
We have a good relationship with Cisco support. However, when they do a new release, they take their time. I don't have much of an issue with Cisco support itself, but working with their customer success team and those types of things can be a challenge. It's not just the response time. It's the total resolution time. They'll respond quickly, but when they get the particular fix, it's a challenge.
How was the initial setup?
In the previous versions, the setup was okay. But as they add more capabilities, it gets more complicated to deploy and maintain the solution. We expect these complexities as part of the roadmap and evolution. We have to set the policy definitions manually because there is no discovery process to define what needs to be authenticated. When a new device is added, we might have to configure something so that it's integrated or set up some data flows of the service we need to do it. These are some of the maintenance activities that we must do to keep it live. We have a good IT team that numbers around 25 people and serves a decent number of customers.
What's my experience with pricing, setup cost, and licensing?
Customers respond to a low price. From the point of view of integration, Cisco ISE hikes up the cost of security, but otherwise, I think it should be okay.
What other advice do I have?
I rate Cisco ISE nine out of 10.
Which deployment model are you using for this solution?
Hybrid Cloud
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Senior Software Engineer with 501-1,000 employees
Good technology that works well with networks, routers and switches, but should include third-party integration
Pros and Cons
- "When you push out the policy, it is able to populate the entire network at one time."
- "Third-party integration is important, as well as the continuous adaptation feature which is the AIOps. It would be helpful to include the AIOps."
- "Once you purchase the DNA, you will need the SNA then the license, overall it's very expensive."
What is our primary use case?
We are resellers. We provide and deploy solutions for our customers.
Cisco ISE (Identity Services Engine) helps the operation to automate.
What is most valuable?
It works very well with the network, router, and switches. It is able to enforce the policy and assigns the traffic a Security Group tag.
A Google user is able to enforce access throughout the router and switches ensuring the traffic going through has the same policy.
When you push out the policy, it is able to populate the entire network at one time.
It's quite good, the market is using this solution.
What needs improvement?
This solution has enhanced features that make it difficult to use. To make it easier, it should be made without PxGrid.
It should be able to work with third-party routers and switches. We want to work in an environment where there are multi-vendors that require PxGrid.
Their software-defined access is not easy to implement. You have to have a good understanding of how to implement it. It would be helpful if they could make it easier for the customer to adopt.
Third-party integration is important, as well as the continuous adaptation feature, which is the AIOps. It would be helpful to include the AIOps.
For how long have I used the solution?
They are currently on version 3.1.
What do I think about the stability of the solution?
If the customer has more than 200,000 users, the performance becomes a bit laggy.
What do I think about the scalability of the solution?
In terms of scalability, it's available on the cloud, but I have not yet tested the features on the cloud.
It is used mainly by our customers, who use it for their entire infrastructure. They have anywhere from 50,000 to 100,000 users.
How are customer service and technical support?
Technical support could be better. They outsource the support.
We are brought all around the world, it is similar to following the sun.
Which solution did I use previously and why did I switch?
Currently, I am using SD-WAN (Software-Defined WAN) from Silver Peak.
How was the initial setup?
To complete the installation, you need to be technically knowledgeable. The setup could be easier.
What's my experience with pricing, setup cost, and licensing?
For the content, and the technologies it is made to be a bit more complex.
The technology is good, but to use some of the other features, and capabilities, they request that we purchase the Cisco DNA Center. As a result, the bundled price is a little high.
Once you purchase the DNA, you will need the SNA then the license, overall it's very expensive.
If, however, you implement Cisco ISE without the DNA and the SDA, the price is reasonable.
What other advice do I have?
To avoid running into any complications when getting this solution up and running, you should get technically trained and comfortable with it before applying it.
I would rate Cisco ISE (Identity Services Engine) a seven out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer.
IT Manager at Shanta Mining
Lacks properly knowledgeable support, but has stability
Pros and Cons
- "So far, we have had no issues with the stability."
- "There is much room for improvement, especially after having perused the documentation on the solution's website. The solution lacks properly knowledgeable support, especially internationally, and this is why I am exploring other applications."
What is our primary use case?
I am not certain if I am using the latest version. It is the one which is made for TV.
We use the solution to access control. Prior to any device being authenticated on the network, a person must login to the solution's site for authentication purposes.
What is most valuable?
While the solution has a host of features, we only use the one involving access control.
We are looking into further uses for it. My aim is to deploy it across all three of our sites and not just one.
What needs improvement?
There is much room for improvement, especially after having perused the documentation on the solution's website.
The solution lacks properly knowledgeable support, especially internationally, and this is why I am exploring other applications.
I would need time to expand my knowledge of the solution and consult with the Cisco engineers before I could point to other pain points.
For how long have I used the solution?
I have been using Cisco ISE (Identity Services Engine) since 2015.
What do I think about the stability of the solution?
So far, we have had no issues with the stability.
How are customer service and technical support?
There should be more knowledgeable support, particularly in the international sphere.
I have no doubt that we will get there. They contacted me yesterday, which makes it likely that by weeks-end we should be able to build a structure and do many things with the solution. This would allow me to know where I am standing, explore further and even examine the possibility of implementing some of Cisco's other features.
Which solution did I use previously and why did I switch?
We did not use other solutions prior to the current one and will likely not explore others in the future. The current one should be fine.
How was the initial setup?
The installation was straightforward, although it will likely involve a more complex implementation in the future.
As the previous installation was not complex, it did not take long.
What's my experience with pricing, setup cost, and licensing?
I believe I have paid around $1,000 in licensing fees. The license is annual.
Which other solutions did I evaluate?
We did not really explore other options prior to using the solution. We considered Fortigate, but found it to not be very straightforward, which is why we decided to go with the current solution.
What other advice do I have?
While we have focused on the access control aspects of the solution, the documentation demonstrates that it has many more features, so I would like to explore it further.
We are customers of Cisco.
At the moment, we have around 250 users making use of the solution.
I rate Cisco ISE (Identity Services Engine) as a five out of ten. This is because I wish to explore further any additional features that can add value to our organization, especially on the IT security side.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
IT Manager at cmc
Provides useful information, plenty of network rules, but user interface needs improvement
Pros and Cons
- "The most valuable features are the ability to retrieve information about Active Directory user names, viewing the log files to see which MAC address tried to connect with the created SSIDs, portal designing for your company, hotspot tools, and creating network rules for WiFi access."
- "The interface could be more user-friendly and the ability to apply rules to MAC addresses, for example, if I wanted to allow a certain MAC address access at a particular time I cannot make this adjustment."
What is our primary use case?
We use this solution for network security.
What is most valuable?
The most valuable features are the ability to retrieve information about Active Directory user names, viewing the log files to see which MAC address tried to connect with the created SSIDs, portal designing for your company, hotspot tools, and creating network rules for WiFi access.
What needs improvement?
The interface could be more user-friendly and the ability to apply rules to MAC addresses, for example, if I wanted to allow a certain MAC address access at a particular time I cannot make this adjustment.
In an upcoming release, they could improve by providing rule-based bandwidth consumption, bring your own device (BYOD) need to be more mature, and the reports could be more user-friendly.
For how long have I used the solution?
I have been using this solution for approximately four years.
What do I think about the stability of the solution?
The solution is stable.
What do I think about the scalability of the solution?
The controller has to manage a certain number of access points and we did not see any problems with the scalability. It is able to handle more access points than we need it for.
How are customer service and technical support?
We do not have experience with The technical support from Cisco directly because the technical support we receive is from our partners which they have been excellent.
Which solution did I use previously and why did I switch?
We have used 3Com wireless controllers previously.
What about the implementation team?
We used Cisco partners to do the implementation of the solution.
Which other solutions did I evaluate?
Recently, I have evaluated Aruba solutions and I found them to be better than Cisco. There is room for improvement, Cisco can do better.
What other advice do I have?
When deciding to implement this solution it is a good idea to assess and define the requirements to determine whether there is a need for this solution. It is important to know what you can use from it. You can have a WiFi environment without the need for a Cisco ISE. This solution has advanced security that might not be needed for your use case. Be sure about your needs.
I rate Cisco ISE (Identity Services Engine) a seven out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Practice Director & Technologies Advisory at Happiest Minds Technologies
Superior support, effective NAC, but difficult to configure
Pros and Cons
- "The most valuable features are the NAC and the bundles that are available with Cisco ISE, such as Cisco ACS being integrated."
- "The solution configuration is complicated for setting the infrastructure. They have improved over the years but there is still a lot of room to improve. When comparing the simplicity to other vendors, such as Fortinet and Aruba they are behind."
What is our primary use case?
My clients are small to enterprise-size companies using this networking solution. One of my clients is a leading pharmaceutical manufacturing company, providing genetic medicine. The network they have has approximately 5,000 device inventory. Additionally, I have a couple of clients in the banking industry in the USA that has quite a large networking infrastructure using this solution.
What is most valuable?
The most valuable features are the NAC and the bundles that are available with Cisco ISE, such as Cisco ACS being integrated.
What needs improvement?
The solution infrastructure configuration is complicated to set up. They have improved over the years but there is still a lot of room to improve. When comparing the simplicity to other vendors, such as Fortinet and Aruba they are behind.
For how long have I used the solution?
I have been using this solution for approximately three years.
What do I think about the stability of the solution?
The solution is stable.
How are customer service and technical support?
Cisco's support system is very good and they are well known for it.
Which solution did I use previously and why did I switch?
I am also using FortiNAC and it is similar to Cisco ISE. However, Cisco is spread across the globe with bigger clients, large enterprises. FortiNAC is not as mature, but they are still working their way up in the market
What's my experience with pricing, setup cost, and licensing?
The price of the solution is price fair for the features you receive.
Which other solutions did I evaluate?
I have evaluated other solutions from Aruba and Fortinet.
What other advice do I have?
I rate Cisco ISE (Identity Services Engine) a seven out of ten.
Disclosure: My company has a business relationship with this vendor other than being a customer. partner
IT Security manager at a energy/utilities company with 201-500 employees
An authentication solution we can trust
Pros and Cons
- "The ability to integrate our Cisco AnyConnect connections to the active directory has been great, and using it as a source of authentication during the process of logging into Cisco AnyConnect has been very useful for us."
- "It would be nice if it could be configured easily by default."
- "I don't like that the licensing structure doesn't allow us to have the 3.1 operating system — it forces us to use version 2.9."
What is our primary use case?
This solution ties into our Cisco Duo and Cisco AnyConnect connections to help us authenticate against the active directory and Cisco Duo multifactor authentication. It takes metrics about the connections that are connecting it and allows us to set up a rule against them. For instance, if a Windows device is not all the way up to date, we can put a message up that says, "Before you're able to connect, please do your Windows updates as they haven't been done in six months."
As this solution allows AnyConnect to authenticate with the active directory in the backend, the users won't directly use it. Still, it will be in use throughout the login process into Cisco AnyConnect as a source of authentication.
With this solution, we don't require anyone for maintenance.
What is most valuable?
The ability to integrate our Cisco AnyConnect connections to the active directory has been great. Also, as a source of authentication during the process of logging into Cisco AnyConnect has been very useful for us.
What needs improvement?
It perfectly does everything we have been looking for it to do. I have not discovered any feature sets or items that are lacking. It's a much more functional product than the old Cisco ACS that it replaced.
That being said, during deployment, they shipped us the Cisco ISE with the 3.1 operating system, which was incompatible with the license that we had purchased, which would only allow us to go up to version 2.9. Because of this, we actually had to do a factory reset and a reload to the operating system — to an older version of the operating system. This required a very extensive process. We had to take out the Cisco ISE and put it into a factory reset mode to get it to roll back to the old operating system. If we were doing an upgrade, this would have been very simple, but as we were doing a downgrade, it was extremely complex and very labor-intensive. I was crawling through the server room, through wires, to plug things in, to get it to connect in the way that it needed to be connected with an external device in order to actually get it to roll back.
I don't like that the licensing structure doesn't allow us to have the 3.1 operating system — it forces us to use version 2.9. If you don't want to pay a monthly or a yearly subscription fee, either that device should have come automatically with the 2.9 version operating system, or it should have been much easier to actually roll it back. Additionally, support should have realized that our license requires us to have the 2.9 operating system instead of the 3.1 operating system, which would have saved us a lot of time.
It would be nice if it could be configured easily by default. If you're configuring a Cisco device, you pretty much need the support of a CCNA-level technician to be able to do it. It would be nice if there was a default or a more simple way to do it. It's not really a requirement to use the device because you can purchase the premium support or you could get a CCNA in-house to do it. Just having that ability to say, "Hey, we want to set this up" without too many complications or without having to bring in support would be nice.
For how long have I used the solution?
We've only been using this solution for the past three months.
What do I think about the scalability of the solution?
The scalability reports that we could easily handle a million users.
How are customer service and technical support?
I have been extensively involved with their technical support; their technical support is very good. They're more than willing to just jump on and do things for you. My only complaint is that at one point, we were trying to configure our single channel for Cisco Duo to be able to perform a password reset. Whenever we needed to look closely at another device, the support technician would say, "Hold on, let me bring in my expert on VPN; hold on, let me bring in my expert on Cisco ASA." We basically had to wait until we were able to get the Cisco Duo support agent, the Cisco ASA support agent, the Cisco VPN support agent, and the Cisco ISE support agent — all in the WebEx meeting at the same time.
As far as I'm to understand, there are CCNAs that should have been able to do it, but they brought in the experts from each item instead of just directly doing it themselves — this made the whole process take longer. Still, they were able to do everything in a way that did not affect our live environment, even though it was on the same device. That was actually very nice because it meant that we could do it in the middle of the day instead of having to do things in the middle of the night.
How was the initial setup?
The initial setup was very simple. Everything was set up within an hour thanks to assistance from the onboarding teams from Duo and Cisco, and our network administrator. They got it set up and reviewed a bunch of options with us. It was a very easy and nice process.
What about the implementation team?
Implementation was achieved with in-house resources and premium onboarding support. The entire process only took an hour.
What's my experience with pricing, setup cost, and licensing?
We are running version 2.9 because version 2.9 of the ISE has a persistent license —it's a one-time payment. The latest version (3.1) is only available if you do a yearly subscription.
It's a licensed physical device; there is no subscription. If you want the latest operating system, then you'll need to get an annual license.
What other advice do I have?
If you're planning on using this solution, my advice is to be sure you review the full feature set available and select what is important to your users. This way you'll be able to ensure that you'll have everything you want and need.
Overall, on a scale from one to ten, I would definitely give this solution a rating of nine.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Associate Consultant at a computer software company with 201-500 employees
Streamlines security policy management and reduces operating costs
Pros and Cons
- "In terms of features, I think they've done a lot of improvement on the graphical user interface — it looks really good right now."
- "This solution has definitely improved the way our organization functions."
- "An issue with the product is it tends to have a lot of bugs whenever they release a new release."
What is our primary use case?
Our use cases are based around dot1x. Basically wired and wireless authentication, authorization, and accounting.
In terms of administration, only our networking team uses this solution. Probably five to ten administrators manage the whole product. Their role pretty much is to make sure that we configure the use cases that we use ISE for — pretty much for authenticating users to the wired and wireless networks. We might have certain other advanced use cases depending on certain other business requirements, but their job is pretty much to make sure all the use cases work. If there are issues, if users are complaining, they log into ISE to troubleshoot those issues and have a look at the logs. They basically expand ISE to the rest of the network. There is ongoing activity there as well. The usage is administrative in nature, making sure the configurations are okay, deploying new use cases, and troubleshooting issues.
How has it helped my organization?
This solution has definitely improved the way our organization functions.
What is most valuable?
In terms of features, I think they've done a lot of improvement on the graphical user interface — it looks really good right now. ISE is always very complicated to deploy because it's GUI-based. So they came up with this feature called work centers, that kind of streamlines that process. That's a good feature in the product right now.
What needs improvement?
An issue with the product is it tends to have a lot of bugs whenever they release a new release.
We've always found ourselves battling out one bug or another. I think, overall they need to form a quality assurance standpoint. ISE has always had this issue with bugs. Even if you go to a Cisco website and you type all the bug releases for ISE, you'll find a lot of bugs. Because the product is kind of intrusive, right? It's in the network. Whenever you have a bug, if something doesn't work, that always creates a lot of noise. I would say that the biggest issue we're having is with all the product bugs.
Also, the graphical user interface is very heavy. By heavy, I mean it's quite fancy. It's equipped with a lot of features and animations that sometimes slow down the user interface.
It's a technical product — I don't think a lot of engineers really need fancy GUIs. We pretty much look for functionality, but I think Cisco, for some reason, is putting an emphasis on its GUIs looking better. We always look for functionality over fancy features.
We've had issues with different browsers, and sometimes it's really slow. From a functionality standpoint, we would rather the GUI was light and faster to navigate.
ISE has a very good logging capability but because their GUI is so slow, we feel it's not as flexible or user-friendly as we would like it to be, especially when it comes to monitoring and logging. At the end of the day, we're implementing ISE for security. And that means visibility.
Of course, you can export the data into other products to get that visibility, but we would like to have a better type of monitoring, maybe better dashboards, and better analytics capabilities within the product.
Analytics is one thing that's really lacking. Even if you're to extract a report, it just takes a lot of time. So, again, that comes down to product design, but that's definitely an area for improvement. I think it does the job well, but they can definitely improve on the monitoring and analytics side.
For how long have I used the solution?
I have been using this solution since they released the first version over ten years ago.
What do I think about the scalability of the solution?
Scalability is pretty good, provided that you design it properly from the get-go. There are design limitations, depending on the platforms, especially the hardware platforms that you select. On the scalability front, it's not a product that can be virtualized very well — that's an issue. Because in the world of virtualization, customers are always looking for products that they can put in their virtual environments. But ISE is not a truly virtualized product, as in it doesn't do a lot of resource sharing.
As a result, it's not truly virtualized. Although they do have the VM offering, it's not virtualization in the proper sense of the word. That's one limitation of the product. It's very resource-intensive. As a result, you always end up purchasing additional hardware, actual ISE physical servers. Whereas, we would like to have it deployed in virtual machines if it was better designed. I think when it comes to resource utilization, it probably isn't optimized very well. Ideally, we would like to have a better-virtualized platform.
How are customer service and technical support?
Tech support tends to be pretty good for ISE. We do use it extensively because of all of the bugs we encounter.
Mostly it's at the beginning of setting the whole environment up. Typically, once it's set up properly, it tends to work. But it's just that the product itself integrates with a lot of other products in the network. It integrates with your switches, with your APs, etc. So, it's a part of an ecosystem. What happens is, if those products experience bugs, then it kind of affects the overall ISE solution as well — that is a bit of a dependency. The ISE use cases are dependent on your network access devices, but that's just the nature of it. The only issue with support is you might have to open a ticket with the ISE team, but if you're looking at issues in your wireless network or switches, you might have to open another ticket with their tech team for switches.
For customers using Cisco, end-to-end, they should improve the integration and providing a seamless experience to the customer. But right now, they have to refer to other experts. They come in the call, but the whole process just takes some time.
That's an area that they can improve on. But typically, I would say that the support has been good. We've been able to resolve issues. They are responsive. They've been good.
Overall, I would give the support a rating of eight.
How was the initial setup?
The setup is not straightforward. It's complex. You need to have a high level of expertise.
What's my experience with pricing, setup cost, and licensing?
It's an expensive solution when compared to other vendors. It's definitely more expensive than ClearPass. It's expensive, but the issue, again, comes down to scalability. Because you can't virtualize the product, there's a lot of investment when it comes to your hardware resources. Your CapEx is one of the biggest issues here. That's something Cisco needs to improve because organizations are looking at reducing their hardware footprint. It's unfortunate that ISE is such a resource-intensive application to begin with. As it's not a properly virtualized application, you need to rely on physical hardware to get the best performance.
The CapEx cost is high. When it comes to operational expenditure, it all depends on the features you're using. They have their tiers, and it all depends on the features you're using. The basic tier, which is where most of the functionality is, is relatively quite cheap. But if you're using some advanced use cases, you need to go to their higher tiers. So, I'm not too worried about operations costs. You need to buy support for the hardware: you need space, power, and cooling for the hardware-side. All of that adds up. So, that all comes down to the product design and they need to make sure it's properly scalable and it's truly virtualized going forward.
Which other solutions did I evaluate?
We've evaluated other products, for example, Aruba ClearPass. There's another product, Forescout, but the use case is a bit different.
When it comes to dot1x authentication, I think it's ISE and Aruba ClearPass. Forescout also comes into the next space, but the use case is a bit different.
We prefer ISE because, I think if you're using Cisco devices, it really kind of integrates your ecosystem — that's why we prefer ISE. When it comes to NAC or dot1x products, from a feature standpoint, ISE has had that development now for 10 to 11 years. So, we've seen the product mature over time. And right now it's a pretty stable and functional product. It has a lot of features as well. So, I think the decision is mainly kind of driven by the fact that the rest of the ecosystem is Cisco as well. From a uniform figure standpoint, the other product is probably the industry leader at this point in time for network admission control.
What other advice do I have?
The main advice would be in terms of upfront design — this is where a lot of people get it very wrong. Depending on the platforms you choose, there are restrictions and limitations on how many users. We've got various nodes, so how many nodes you can implement, etc. Also, latency considerations must be taken into account; especially if you're deploying it across geographically dispersed regions. The main advice would be to get the design right. Because given that directly interferes with the network, if you don't get your design right it could be disruptive to the network. Once you've got the proper design in place and that translates into a bit of material, the implementation, you can always figure it out. Getting it right, upfront, is the most important thing.
Overall, I would give ISE a rating of eight out of ten. I don't want to give it a 10 out of 10 because of all the design issues. There is definitely room for improvement, but overall out there in the market, I think it's one of the best products. It has a good ecosystem. It integrates well with Cisco devices, but it also integrates with third-party solutions if you have to do that. It's based on open standards, and we've seen the ecosystem grow over the years. So, they're doing a good job in terms of growing the ecosystem and making sure ISE can work with other products, but there's definitely room for improvement on the product design itself — on monitoring, on analytics.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Senior Software Engineer with 501-1,000 employees
A one-stop solution to streamline security policy management
Pros and Cons
- "They have recently made a lot of improvements. My clients don't have much to complain about."
- "Our customers definitely see a return on their investment with this solution."
- "It should be virtualized because many people have begun migrating to the cloud. They should offer a hybrid version."
- "I would say Cisco's support has been getting worse."
What is our primary use case?
We use ISE for security group tagging in terms of guests and visitors who access the network to make sure that they actually go through this to control their privilege access to ensure they don't actually access the internal network, etc.
Our clients use ISE as a form of security policy management so that users and devices between the wired, wireless, and VPN connections to the corporate network, can be managed accordingly.
Take a house for example. Sometimes you need to access a room via a certain keyhole, so you use a key that is unique to that door. With ISE, you can segment this process in terms of policy management based on the security tag. You actually grant the user access based on the tagging.
That's the IT trend — saving a lot on operating costs to manage the different users and access methods.
Within our company, we have roughly 200 employees using this solution.
What is most valuable?
My clients are always talking about the segregation capabilities. Segmentation refers to how you can actually segregate employee and non-employee client access.
What needs improvement?
They have recently made a lot of improvements. My clients don't have much to complain about — it's a one-stop-shop.
It should be virtualized because many people have begun migrating to the cloud. They should offer a hybrid version.
What do I think about the stability of the solution?
It's stable but there's a limitation of up to 200,000 users. If you have a big number of users, then you have to customize the installation process.
What do I think about the scalability of the solution?
It's only scalable up to 20,000 users.
How are customer service and technical support?
I would say Cisco's support has been getting worse. I think they outsource a lot of skillsets.
How was the initial setup?
The initial setup is pretty straightforward. They actually provide a lot of help to IT administrators which makes setting it up rather easy.
The whole setup takes about three days because you need to basically configure the network, test the configuration, and then you need to cut over to production.
What was our ROI?
Our customers definitely see a return on their investment with this solution.
What's my experience with pricing, setup cost, and licensing?
I think licensing costs roughly $2,000 a year. ISE is more expensive than Network Access Control.
What other advice do I have?
If you wish to use ISE, you must have a deep understanding of IT. If you don't, setting it up properly will be very complex.
Overall, on a scale from one to ten, I would give this solution a rating of nine.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer. Reseller
Buyer's Guide
Download our free Cisco Identity Services Engine (ISE) Report and get advice and tips from experienced pros
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Updated: June 2026
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Buyer's Guide
Download our free Cisco Identity Services Engine (ISE) Report and get advice and tips from experienced pros
sharing their opinions.
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Cisco Identity Service Engine l will give it an 8 out of 10 rate. It's stable and easily integrates with other network devices such as switches, routers and its central device management TACACS. The major challenge is in the new license model. Base, Plus and Apex licenses have been migrated to Essentials, Advantage and Premier. The new Cisco ISE licensing model Essentials, Advantage, and Premier licenses are term-based which limits end-user to fully utilize all the device features and functionality.