Aug 25

Monitoring Cisco Switch Port Discards

If you are using a monitoring software such as Opsview or Orion, you will see sometime that you get a warnings on switch port discards. The first thing to do usually is to  check the actual switch port by using 'show int xx/xx status'. However this command would show rest of the details but nothing about …

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Mar 05

WLC Mobility Group Control Path DOWN after upgrade 7.4 to 7.6

I recently upgraded the Cisco WLC 5508 Controller Software from Version 7.4.100 to 7.6.130 and also the 'Field Recovery Image Version' image  from verion 7.0 to 7.6. However, after the upgrde the status of the Mobility Anchor Group changed from 'UP' to 'Control Path Down' state. 


Environment Parameters:

Guest Anchor WLC Model: 2504

Guest Anchor WLC Software Version: …

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Feb 13

Cisco AP AIR-CAP1552E-E-K9 would not join controller

I had an issue where the Cisco AP AIR-CAP1552E-E-K9 would not join controller. This was also my first encounter with this AP. Every thing was configure correctly and power injector was used to power this AP, by checking MAC address of the AP from switchport and checking the ARP table I manage to verify that …

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Nov 29

Converting Prompts for UCCX 7

UCCX only accepts certain type of .wav format for any prompt files that it can use. The file format should be

8.000kHz, 8 Bit, Mono 7 kb/sec

Now there are a lot lot of posts detailing how to convert into this format but most of these result in 64kbp sample size which will work with …

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Nov 28

Duplex Mismatch – How varying Duplex/Speed settings can effect connectivity?

Well, let first explain couple of terms when dealing with Duplex and Speed settings on Cisco Switches. These settings determine what will be the status of the link when an end device is connected to switchport. You will have to keep the settings on NIC of end device in sync with switchport config to make …

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Aug 02

Don’t span high volume traffic to WS-X6548-GE-TX or WS-X6148-GE-TX oversubscribed line cards


Don't span high volume traffic to WS-X6548-GE-TX or WS-X6148-GE-TX oversubscribed line cards. I was scratching my head for the last two hours after a span session I created on 6500 caused other network users loose network connectivity/slowness. Later I find out that the line card I used to sniff traffic is not fit for …

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Aug 01 – Don’t change your primary email address and how to revert back if you already did

A lot of excitement surrounding the launch of replacing hotmail however if you are too excited you might have used the option of changing you primary email address from to Nothing wrong with it but you will find that

i. when you try to login to or, it will only …

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Jun 24

Best Email App for Android ICS

Well, since I moved form IPhone to Galaxy S3 , I was in constant pursuit to get an email app which shows html emails and can work with Hotmail exchange active sync. The benefit of active sync is that it syncs you calendar, contacts and email at the same time. The problem with native email …

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Jun 04

ASA 8.4 Upgrade Path – 8.2 to ASA 8.4 with Zero Downtime

This post details the process that I followed for ASA 8.4 Upgrade  Path – 8.2(0) to ASA 8.4(4) with Zero Downtime. The units are in Active-Failover configuration. The process was done in stages, first was to upgrade the memory module second was to upgrade the software on the device. This process worked for me and …

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May 24

RSPAN Configuration for Cisco 6500 Switches

Depending on the IOS Version and platform, the Remote SPAN configuration can be a bit different. In this post I will be configuration RSPAN session between a Cisco 6506 switch running IOS Version 12.2(33)SXI and Cisco 6509 running IOS Version 12.2(17d)SXB1.





Source: Cisco 6506 (IOS Version 12.2(33)SXI)

1. Configure …

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