I get asked many times what hardware and software versions are required to integrate with Cisco DNA Center. In addition, there are a variety of capabilities of DNA Center including network provisioning, software management, network visibility, and segment so it can make it challenging to know which network components are supported with which DNA features. Oh and don’t forget there are software version requirments 😉 Here’s a link here that provides this information.
Here’s a secret decoder ring for the part numbers of the 4000 series of the Cisco Integrated Services Routers.
First digit = the family, all are 4
Second digit = the sub-family with 4 (highest performance), 3 (middle performance), and 2 (lowest performance)
The third digit = total number of slots, the sum of NIM and SM
The fourth digit = 1, identifying the first in that series. Allows for incrementing for the subsequent platforms in the series.
If you want a quick way to test if your DNS filtering is working try accessing www.internetbadguys.com
If this site is being blocked properly you should see something like the following;
Remember that you can get this security filtering for free. Simply point your DNS to 18.104.22.168 and 22.214.171.124.
One of the many hats I wear as a sales engineer is to work on proof of concept and conceptual efforts. These activities are usually leveraged to help answer the question “can we do that?” or “will this work with OUR business process?”.
Recently a lot of my efforts have been focused on integrating collaboration tools with business processes. One simple example of this is for someone running a trade show booth and looking to connect with potential clients. Exchanging business cards is so 1995, and there are way better ways to do this. One quick way I created was to have the potential client simply text their email address to a defined SMS number (short code if you want) and then kick off a process to add them to a Cisco Spark space and also update the CRM system with a new contact. This provides an immediate way to have rich interaction with your potential client as Cisco Spark supports not only text, file sharing, but also full audio and video calling and meeting functionality. And to top it off Cisco Spark is free (with some scale limitations).
Enough about why Cisco Spark is wonderful and can solve all of the problems you are facing and onwards to how I achieved building this simple integration in less than a work day. I cheated or at least it feels like I cheated. I have been using a platform named Built.io Flow which provides an easy to use, but very powerful integration as a service offering that is completely hosted. It features many pre-built integrations in to common enterprise applications (Cisco Spark, Dropbox, Twilio, Tropo, MongoDB, Google Apps, Office 365, ServiceNow, PagerDuty, etc.). If their pre-built integrations aren’t adequate you can write some node.js code and run it on their cloud platform as well. And for those of you saying “my data lives in my data center and I’m not ready to send everything to the cloud” you can leverage their Enterprise Gateway which provides a secure bridge between the cloud and and your on-premises environment giving you the best of both worlds. Oh, and before I forget, their technical support is phenomenal (shout out to Pramod Mishra)!
Here’s a screen shot of the application I described above where a simple text message containing an email which will join the user to a Cisco Spark space and also log their information to a Google Sheet (that’s my attempt at a simple CRM system).
And don’t think Built.io is only designed for small scale testing or proof of concept activities. Many large organizations are using this very platform for production level workloads.
Cisco Cloud Web Security (CWS) and OpenDNS both provide cloud based security services. CWS offers an HTTP/HTTPS proxy and OpenDNS provides security and visibility at the DNS resolution layer. I’ve been asked many times where both CWS and OpenDNS host their services as this can make a big impact in end user experience if the hosting location is far away from the user and could lead to high latency and a lousy experience.
CWS Proxy Location and Status Page: http://servicestatus.sco.cisco.com/status
OpenDNS Location and Status Page: https://www.opendns.com/data-center-locations/
I regularly share useful links with customers and colleagues and often find that this page is a great starting point to explore some of the web tools Cisco has available http://www.cisco.com/c/en/us/support/web/tools-catalog.html
Some of these tools include the Cisco Power Calculator, Cisco Feature Navigator, Cisco IOS to NX-OS configuration converter, and many others. Give it a click and explore some tools you likely didn’t even know existed.
Cisco acquired a company named ScanSafe in 2009 to provide cloud based web proxy services and this service was renamed to Cisco Cloud Web Security (CWS). Cloud Web Security offers an alternative to on premise proxy services by hosting proxy services in data centers around the world. There is a single management portal where an administrator can create policies and run reports. Once a policy is created it is available across all the proxy servers around the world which greatly decreases the burden of creating consistent policies.
There are a variety of ways to leverage CWS including:
- Cisco AnyConnect
- Connectors for Cisco ISR G2 routers (1900, 2900, and 3900 series)
- Connectors for Cisco ISR 4000 routers (4300, 4400 series)
- Connector for Cisco ASA firewalls
- Integration with the on premise Web Security Appliance (WSA)
- Direct integration via client proxy configuration (point your operating system to the CWS proxy)
The connectors for the routers and firewalls offer transparent redirection which makes deployment very straightforward. The integration with AnyConnect provides a very simply solution for securing internet access for users when they are outside of the corporate network without requiring all internet traffic to be backhauled.
More information on the service can be found here http://www.cisco.com/c/en/us/products/security/cloud-web-security/index.html and information on the current proxy locations is available here http://servicestatus.sco.cisco.com/status
With the explosion of amateur electronics interest there is a renewed demand for basic electronics information. I’ve found the information available at All About Circuits to be well written, up to date, and easy to follow. In addition there are a number of courses available via edX offering beginner to intermediate level courses.
Need a simple, easy way to check if a piece of Cisco hardware is covered under warranty or SMARTnet? Look no further than this useful site: https://cway.cisco.com/sncheck
You will need to login using your Cisco.com (CCO) username and password, but then you can check on coverage for ANY serial number. If the serial number is covered under a contract associated with your CCO account then you will see additional details including coverage end date and coverage level.
I recently discovered the excellent web based diagramming tool named Gliffy. You can think of it as a web based version of Microsoft Visio at a high level. In addition to network diagrams you can create flowcharts, org charts, sitemaps, user interface diagrams, etc. The import/export functionality works well and even supports importing Visio VDX files (not VSD though). Gliffy offers smooth integration with Google Drive.
A free account offers you the ability to test drive the capabilities of their platform with a few limitations including:
- Total diagrams are limited to 5
- Storage is limited to 2 MB
- Inability to create private diagrams (everything you create is viewable by anyone)
I encourage you to take their tool for a test drive at http://www.gliffy.com/