RGB Spectrum / Multiviewer factory default password

Are you thinking about a video wall? Yes, it is expensive. Any Alternative? RGB Spectrum’s Zio® multiviewers will be one of the solutions that allow multiple streams…

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How to reset Cisco FXS voice card and port

Cisco FXS voice card is very handy solution if you already have Cisco router and DSP module on the router. It makes your router has…

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How to add Cisco Expansion Module 7916 on Cisco IP phone 7965

Step 1. H/w Install with proper steps. 1.1 Power code Case#1 : IP phone (POE) + Single Cisco 7916 module(Power supply) : Cisco 7916 module…

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How to fix Cisco FXO Voice Card Disconnect issue

How to fix Cisco FXO Voice Card Disconnect issue Recently, I was working on setting up PSTN/POTS line at international office. On Cisco 2921 router,…

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Cisco ICMP Redirection Behavior and Tips.

If you have old network design like route-on-a-stick although L3 switch was present. Basically, all Switch Virtual Interfaces(SVIs) for the VLANs are on the router….

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Useful Cisco Troubleooting Links

Here is collection of Cisco Troubleshooting Links   VoIP 1. Troubleshooting and Debugging VoIP Call Basics   Circuits 1. T1 PRI Troubleshooting 2. T1 Alarm…

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How to disable syslog error opening tftp://255.255.255.255

I am getting below message from Cisco Voice Gateway Router at work. Where those are coming from? and how to disable the error message.  …

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How to stop FAN_LOW_RPM message on Cisco 2800

It is very common things in my world failing FAN on Cisco 2800 series router. You could buy FAN module thru ebay, but temperature is…

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How to apply and active Cisco k9 license on a router

Here is a quick video link how to apply / install Cisco K9 license on a Cisco router. Enjoy!   http://www.cisco.com/c/dam/en/us/td/docs/routers/access/sw_activation/license_install_demo/licesne_install_demo.swf   Also, here is…

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How to configure out of band management port by VRF on Cisco router

Most of external router is outside of firewall and you could manage the router thru in-band management, but sometime separated path for control would be…

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Cisco License Information

  CME License FL-CME-SRST-5 License = Price range $95~170 FL-CME-SRST-25 License = Price range $350~650 FL-CME-SRST-100 License = Price range $1,250~2,500 FL-CME-SRST-250 License = Price…

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Hiding Cisco logging/warning messages by supressing

I got an old Cisco 2811 from ebay with cheap price. Out of box, I got below warning message. *Sep 10 01:29:05.887: %ENVMON-4-FAN_LOW_RPM: Fan 1 service…

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