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#CiscoChampion Radio S1|Ep 44. Cisco Expressway

CiscoChampion2015200PX#CiscoChampion Radio is a podcast series by Cisco Champions as technologists. Today we’re talking with Cisco Technical Marketing Engineer Kevin Roarty about Cisco Expressway. Kim Austin (@ciscokima) moderates and Josh Kittle, Joshua Warcop and Rick Vanover are this week’s Cisco Champion guest hosts.

Listen to the Podcast.

Learn about the Cisco Champions Program HERE.
See a list of all #CiscoChampion Radio podcasts HERE.

Cisco SME
Cisco Technical Marketing Engineer Kevin Roarty

Cisco Champions
Joshua Warcop, (@Warcop), Senior Consultant
Josh Kittle, (@ciscovoicedude), Unified Communications Engineer
Rick Vanover, (@RickVanover), Product Strategy Specialist and Community Manager Read More »

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802.11ac: More Throughput For One or For All?

In today’s highly mobile society we try to stay as connected as we possibly can, whether that be for instant messaging, email, or keeping up with our favorite TV shows and movies. This obsession for connectivity has stressed the wireless infrastructures that are installed by many organizations. Because of this many organizations are looking to update their systems that support 802.11n technologies or even the older 802.11a/b/g standards. As a consultant it is one of my jobs to help a customer understand the new technology inside and out and make sure their networks are deployed accordingly. One of the major topics discussed when going over 802.11ac is throughput. 802.11ac brings with it a substantial jump in throughput, but there is a price to pay in order to achieve those higher data rates.

test-4Let’s go over a basic first, in wireless technology we use a frequency, or channel, to send our signal from the client to the station (access point). Think of this channel as a lane on a highway or freeway. A single lane carries so many cars per hour. Now if we add another lane in the same direction we can carry double the amount of traffic. This is repeated for each lane that you add. 802.11n and 802.11ac both allow us to combine multiple lanes to act as a single wide lane, allowing for larger traffic to pass. These channels are reflected as 20MHz, 40MHz (2 lanes – 802.11n and 802.11ac), and 80MHz (4 lanes – 802.11ac).

Ok, so we get the hole channel concept now right? So what’s the big deal then if we start combining these channels? Channels = capacity in the wireless world. A channel only has so much bandwidth to provide, you can’t create more, it’s a very finite resource. When our goal is to support hundreds of client devices in a large university auditorium for example, we want more channels as this gives us more overall capacity. If I were to deploy a true 802.11ac network for a university in an auditorium that requires say for example 6 access points I will end up with channel reuse when I avoid DFS channels in 5GHz. The channel reuse will degrade the performance of those access points using the same channel. Now if I deploy the same 6 access points with 40MHz channels I no longer have to worry about channel reuse in that auditorium. Read More »

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Cisco ISE 1.3: Welcomed Improvements

I’ve finally had a chance to stop and smell the roses. The roses being Cisco ISE 1.3 that is. It’s been a much anticipated update to Cisco’s core TrustSec component and there are a number of improvements, many dealing with Guest users. So what has Cisco done to improve? Let’s look at 5 areas related to Guest access:

1.     End-User Web Portals
2.     Notifications
3.     Guest Portals
4.     Sponsor Portals
5.     Non-Guest Portals

End-User Web Portals

One of the new features that I really like is how the interface has been modified to centralize the portal configuration tasks and customization into a single location. The first thing you notice when you navigate to Configure Guest Access and Sponsor Access is that the interface is designed to make life easy. Three steps to Guest Access are overviewed and each step is clearly identified. We don’t usually find this information in the user interface. Normally we’re looking for this in an End User Guide or a Lab Guide for one of the courses I teach. So, in my opinion, this is a fresh new approach to making a complex device like ISE much easier to use.

ise-guest-access

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#CiscoChampion Radio S1|Ep 42. Jimmy Ray Purser Talks Tech

CiscoChampion2015200PX#CiscoChampion Radio is a podcast series by Cisco Champions as technologists. Today we’re talking with Cisco Technical Marketing Engineer and TechWiseTV host, Jimmy Ray Purser  (@JimmyRay_Purser), about all things IT. Amy Lewis (@CommsNinja) moderates and Sven Kutzer, Amy Arnold and Robert Novak are this week’s Cisco Champion guest hosts.

Listen to the Podcast.

Learn about the Cisco Champions Program HERE.
See a list of all #CiscoChampion Radio podcasts HERE.

Cisco SME
Cisco Technical Marketing Engineer and TechWiseTV host, Jimmy Ray Purser (@JimmyRay_Purser)

Cisco Champion
Sven Kutzer, @svenkutzer, Senior Systems Engineer
Amy Arnold, (@amyengineer), Senior Network Engineer
Robert Novak, (@gallifreyan), Cisco Consulting Systems Engineer Read More »

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#CiscoChampion Radio S1|Ep 41. Cisco Learning Labs (CLL)

cisco_champions BADGE_200x200#CiscoChampion Radio is a podcast series by Cisco Champions as technologists. Today we’re talking with Cisco Engineering Technical Leader Raymond Viscaina, about Cisco Learning Labs (CLL). Lauren Friedman (@lauren) moderates and Brad Haynes is this week’s Cisco Champion guest host.

Listen to the Podcast.

Learn about the Cisco Champions Program HERE.
See a list of all #CiscoChampion Radio podcasts HERE.

Cisco SME
Raymond Viscaina, Cisco Engineering Technical Leader

Cisco Champion
Brad Haynes, @GK_bradhaynes, Client Solutions Specialist Read More »

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