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Understanding DHCP Snooping
As outlined in my previous post (Understanding DHCP) DHCP discovery & DHCP request packets coming from a client destine to layer 2/3 broadcast. Therefore these packets will reach every host in...
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Multicast Deployment Types
PIM (Protocol Independent Multicast) is used as router-router signalling protocol for multicast traffic (IGMP used as host-router multicast signalling protocol). In this post we will look at this PIM...
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“CLIP” command in Windows
I found this useful command in Microsoft Windows in order to copy DOS prompt command output to a notepad/wordpad without going through “Edit – Mark – Paste” process. This works perfectly in Windows 7...
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* BYOD with QoS
Even though this is not a CCIE wireless topic, I had to spent lot of time to test BYOD devices for its QoS capability. My company is planning to deploy Cisco Jabber on those sort of devices to provide...
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Office Extend – Overview
Cisco’s “Office Extend” solution allow companies to extend their corporate network into teleworker’s place or into employees home without compromising its security policy. As you can see in the above...
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Autonoumous AP – Wireless Bridges
Since now a days Autonomous AP deployments are rarely used, it is very hard to find quality documentations(apart from Cisco configuration guides & few support forum docs) how to configure these. To...
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1st Wireless CCIE of the Year 2013
“Jeff Rensink” has achieved his wireless CCIE on 3rd Jan & became the first wireless CCIE of the year 2013. He did this successfully on his 2nd lab attempt. This was his 2nd CCIE as well. He...
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Configuring OEAP
As we discussed in the “OEAP Overview” post, from CCIE lab perspective this feature is enabled on normal LWAP by converting it on to OEAP (No 600 series OEAP HW in CCIE Lab). In this post we will see...
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WorkGroup Bridge – WGB Configurations
Work Group Bridges (WGB) are Autonomous APs configured as clients. These WGB APs are used to relay traffic from non-802.11 clients to wireless infrastructure. This is different to normal wireless...
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PIM-SM Static RP Configurations
In this post we will see how to configure PIM-SM (sparse mode) with static RP configurations. Following basic lab setup used for this with a multicast source is connected to a layer 3 switch (CAT2)...
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Autonomous AP – Repeater
A repeater is used to extend the range of wireless coverage. In this mode you cannot configure multiple vlan on repeater access point. It only support single vlan & it has to be on the native vlan....
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Backup & Restore WLC configs
In a Cisco switch or Router (running on IOS) taking a configuration backup & restore is very easy task. you can simply backup your router/switch configuration in to flash disk by “copy run flash”...
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Understanding “VLAN Select” Feature
How do you manage allocating IP subnets for wireless clients where client numbers are rapidly growing over the time ? In my campus environment every year when students start their academic semester, we...
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ACS 5.2 Compatible Browsers
I had to spend a complete day to figure out an internet browser work well with ACS 5.2. The issue came to my notice, when I was testing config example of “Dynamic VLAN assignment with ACS 5.2“. Under...
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How to Patch ACS ?
I had to patch my ACS 5.2 server couple of times & thought of describing the process here. First of all you need to download the correct patch from Cisco web site. You can find that via...
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WLC Landscape is changing…..
Cisco has released its latest Wireless LAN Controllers into market. Cisco 5700 series stand alone controller & 3850 WLC integrated catalyst switch. Both are IOS based & that’s the key...
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PIM-SM Auto-RP configurations
In this post we will see how to configure Auto-RP in order to dynamically (as oppose to Static) discover RP in a given PIM-SM multicast network. We will use following network topology for this. As...
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Top 5 free Media Players for Tablets/Phones
VLC player is by far advanced media player when it comes to Desktop, Laptop type of devices irrespective of the operating system (Windows, Linux or Mac). But when it comes to Tablets & smart...
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AAA Basics – Part 1
AAA (Authentication, Authorization & Accounting) either can be enabled locally on a cisco device or remotely through a TACACS/RADIUS server. TACACS is cisco proprietary protocol & RADIUS is...
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Syslog & Msg Log in WLC
Here are few syslog messages in a cisco switch.Each syslog message has common parameters like Facility, Severity & Mnemomics. %SYS-5-CONFIG_I: Configured from console by consol...
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