Network technologies and trends


January 18, 2010  6:01 AM

Cisco AP 500 Series Wireless Access Points good for Small Business

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Cisco Systems launched recently a Wireless access point targeting the Small to Midsize business. The Cisco AP 500 Access Point is easy to install and manage.  The clustering technology with simplifies the deployment and of Cisco AP 500 AP by creating single point of administration for multiple Cisco AP 500 Access Points. Currently Cisco is offering one model AP 541.

 

The Cisco AP 500 comes with clustering technology, Gigabit Ethernet LAN interface for higher throughput, 802.11n compliance and dual band user selection for either 2.4 GHz or 5 GHz and more over it supports voice roaming.

 

Some of the features of Cisco AP 500 are as follows

Cisco AP 500 Series Wireless Access Points offer a range of features:

  • Clustering Technology: Simplifies wireless deployments by creating a single point of administration for multiple access points. Clustering technology replicates a configuration, pushes it out to other access points, and continuously manages the frequency channels for each device, reducing network interface.
  • Superior Performance: Gigabit Ethernet LAN interface for higher throughput. Wireless radio complies with 802.11n wireless technology, using MIMO technology to enhance network coverage, capacity, and throughput for data and multimedia applications, while allowing for backward compatibility with a, b, and g clients.
  • Robust Security: Supports business-class security encryptions (WPA2, 802.1x supplicant) and authentication for client compatibility, MAC address authentication, client isolation, and rogue access point detection.
  • Voice Roaming: Allowing for client fast roaming while maintaining good voice quality with 802.11i pre-authenticated standards.
  • Power Options: Uses both standard AC power and Power-over-Ethernet (PoE), simplifying installations in locations such as drop ceilings where power outlets may not be accessible.

[kml_flashembed movie="http://www.youtube.com/v/muvJBupjyrc" width="425" height="350" wmode="transparent" /]

January 17, 2010  6:14 AM

SolarWinds is offering Free Networking Tools

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

SolarWinds a leading Network Management Software company is offering Free Networking tools, especially the SolarWinds TFTP server is an award winning application. After acquiring Kiwi Syslog, SolarWinds improved its features. Just download the free Networking tools and relax.

Real-Time NetFlow Analyzer

This free desktop tool captures and analyzes NetFlow data so that you can:
• Quickly answer “why’s the network so slow?”
• Identify network top talkers
• Analyze traffic spikes and bandwidth consumption

VM Monitor

Get X-Ray Insight into Your ESX Servers
• Quickly check the health of your VMware ESX Server
• View detailed virtual machine health statistics
• Get visual alerts when performance degradation occurs

Exchange Monitor

Continuously monitor Microsoft® Exchange health, including:
• Exchange services
• Mail queues
• Host server health

Award-Winning TFTP Server

The most robust, widely trusted and easy-to-use TFTP server which enables you to:
• Concurrently upload and download images from multiple devices
• Upload and download configurations to devices
• Transfer files larger than 32MB

Kiwi Syslog Server

A powerful, flexible Syslog Server that’s easy to use:
• Receive and Manage Syslog messages from devices
• Log and Forward Syslog messages based on priority or time of day
• View Syslog messages in multiple windows simultaneously


January 16, 2010  5:44 AM

How to send message to one telnet users from a Cisco Router or Cisco Switch?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In my last article we know how to send a message to all telnet users in a Cisco Router or a Cisco Switch using “send” command. This command can also use to send a message any particular telnet users. It’s quite simple.

Long in to your Cisco Device and look for current telnet users, by using a “show users” command

 

ITKESW01#sho users

    Line       User       Host(s)              Idle       Location

   1 vty 0     netmgr     idle                 00:00:49 10.0.0.5

   2 vty 1     yasir      idle                 00:00:16 10.0.0.5

*  3 vty 2     yasir      idle                 00:00:00 10.0.0.7

 

  Interface      User        Mode                     Idle     Peer Address

 

ITKESW01#

 

 

If you want to send a message to vty session 1 then do as follows.

 

ITKESW01#send 1

Enter message, end with CTRL/Z; abort with CTRL/C:

Dear User netmgr please log off as we need to change your password

^Z

Send message? [confirm]^Z

ITKESW01#

 

 

[kml_flashembed movie="http://www.youtube.com/v/afd-xZ6boZo" width="425" height="350" wmode="transparent" /]


January 12, 2010  5:08 AM

An introduction to some of new features in ASP.Net 4.0 and Visual Studio 2010

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

Recently a good friend of mine published an article which highlights on the some of the new features in ASP.Net 4.0 and Visual Studio 2010.

http://www.codeproject.com/KB/aspnet/Whatis_New_ASP_Net_4.aspx

This article is worth reading, though I am not into ASP.Net or Visual Studio, I enjoyed the article.

The author of this article can be reached at abdul_sami_20@hotmail.com


January 9, 2010  10:21 AM

How to send a message to all telnet users from a Cisco Router or Cisco Switch?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

 

 

Imagine you need to  restart your Cisco Router or a Cisco Switch for some reason, but there are few telnet users logged into your Cisco device. There is a way to send a message to all active telnet users. By using a “send” command from your Cisco Router or a Cisco Switch you can send a message. To do so login to your Cisco Router or a Cisco Switch and type “send*”

 

ITKEAS01# send *

 

Once you enter “send*” in your Cisco Router or a Cisco Switch you will see the following prompt in your device

 

 

Enter message, end with CTRL/Z; abort with CTRL/C:

 

Then you can type your message followed by control Z to send the message to all tty lines.

 

 

This is test message

Please log out of router as we need to restart it^Z

Send message? [Confirm]

ITKEAS01# #

 

 

***

***

*** Message from tty1 to all terminals:

***

This is test message

Please log out of router as we need to restart it

 

 

ITKEAS01#

 

NOTE: When you want to send the message use the CTRL/Z key sequence

[kml_flashembed movie="http://www.youtube.com/v/a6Cg3he_6t8" width="425" height="350" wmode="transparent" /]


January 5, 2010  7:02 AM

PM crash course for IT Professionals helped me to execute our Data Center Expansion Project

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

First of all I would like to thanks Michael Morisy from ITKE for offering me a copy of “PM crash course for IT Professionals” also I am thankful to Jamie Adams from Cisco Press for her support all the time.

 

Since I was the Project Manager for our Data Center Expansion project, this book came to me as a great working manual to implement the project. I followed the methodology discussed by the author a management guru Rita Mulcahy (PMP) and I imbibed the methodology into my project which led to successful completion.

 

 

The book really met the objectives to assist the IT professionals to sharpen their project management skills. The best thing I like about the book is the way Rita explained the essentials of project management and this book can be read in a short span of time.

 

The “PM crash course for IT Professionals” is a fine book in which the author have refined the essentials of Project Management into concise points. The exercises, check lists, templates available in this book are quite beneficial especially to IT Professionals. 

 

I would recommend the “PM crash course for IT Professionals” for IT professionals/ Project Manages who are looking an immediate impact on going projects as this book comes with lots of easy to use tools and processes followed by great ideas .


December 30, 2009  6:20 AM

Solar wind is offering a free Net flow configurator

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

 

Netflow is an important tool and it has become an important factor especially when it comes to managing the network and vigilantly watching the bandwidth utilization.  Solar Winds designed a free NetFlow confrigurator which is the easiest tool I have seen, the Solar winds NetFlow confrigurator is capable of configuring the NetFlow v5 via SNMP on supported Cisco® devices. The free NetFlow Confrigurator also facilitates setting up collectors for Cisco NetFlow data, specifying the ports on which the collectors are listening, and enabling monitoring of inbound and outbound (ingress/egress) traffic data per interface.

 

Here is a cool video from Solar Winds which demonstrates how to configure NetFlow in Cisco Devices.

 [kml_flashembed movie="http://www.youtube.com/v/rP_PvRbeQIM" width="425" height="350" wmode="transparent" /]

 


December 29, 2009  6:43 AM

Avaya Completes Acquisition of Nortel !

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

According to the press release on 18th of December, Avaya says it has finally completed the acquisition of Nortel after getting as approval for the deal from the Investment Canada Act during mid December 2009.

 

Avaya claims the complete acquisition will result in it gaining an expanded partner ecosystem, a broader portfolio, an enhanced customer base, and a greater ability to compete globally. It will also give the IP telephony company an opportunity to extend relationships with system integrators and service providers in the enterprise market.

 

Avaya has to confirm about its plan for Nortel’s distribution channel. However Avaya is expected to come out with the new product portfolio by end of Jan 2010.

 

“Avaya and Nortel Enterprise Solutions share a common vision for the future of business communications,” stated Kevin Kennedy, president and CEO at Avaya.

“By combining our complementary technology portfolios, deep industry specific domain expertise, sales channels and customer bases, the new Avaya will redefine business communications and help customers to reduce costs, simplify operations and increase their business agility,” said Kennedy.

 

Approximately 6,000 Nortel employees have joined Avaya, including what the vendor calls “25 top managers”. 


December 28, 2009  5:28 AM

Cisco Security alerts on your phone.

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

                                                                                                                                                                 

Cisco Systems is now offering security alerts by SMS, get connected to Cisco security advisories, responses, bulletins, updates, and more. Get a text message as soon as new content is posted. Just register yourself to get all these updates on your phone and by doing so you can stay updated at no cost.

 

 

 


December 27, 2009  11:15 AM

How to repair a corrupted IOS in Cisco 1250 access point Series 3?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

 

In my last post we looked at how to fix the corrupted IOS in a Cisco 1250 Wireless Access Point, the other way of recovering the corrupted IOS is by again by using a solar winds TFTP server, but in this procedure the access point loads itself the image file from the TFTP server. In order do so follow the below mentioned steps.

Step 1

Configure the PC with Solar Winds TFTP server with a class A Static IP Address range of 10.0.0.2 to 10.0.0.30.

Step 2

Make sure that the PC with the solar winds TFTF server contains the Cisco 1250 Wireless Access Point IOS image file (such as c1250-k9w7-tar.124-21a.JA1 in the Solar Winds TFTP server folder) and the TFTP server is activated.

Step 3

Rename the Cisco 1250 Wireless Access Point IOS image file in the solar winds TFTP server folder to the default image name –c1250-k9w7-tar.default for a Cisco 1250 Wireless Access Point.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Step 4

Connect the PC with solar winds TFTF server to the Cisco 1250 Access point with a  Category 6or Cat5 Ethernet cable (straight cable).

 

 

Step 5

Disconnect power from the Cisco 1250 Access point.

Step 6

Press and hold the MODE button while you reconnect power to the Cisco 1250 Access point.

Step 7

 Hold the MODE button until the status LED turns red (approximately 20 to 30 seconds), and release the MODE button until the console indicates

Button is pressed; wait for button to be released

Once you release the button you will see the Cisco 1250 Access Point starts downloading the default IOS image from Solar wind TFTP sever as shown below

 

Step 8

Wait until the Cisco 1250 access point reboots as indicated by all LEDs turning green followed by the Status LED blinking green.

Step 9

After the Cisco 1250 access point reboots, reconfigure the access point using the Command Line Interface (CLI) or GUI.

Also check demonstrated video to recover the IOS in Cisco 1250 Access Point.

 [kml_flashembed movie="http://www.youtube.com/v/ixv_Gmzpvwk" width="425" height="350" wmode="transparent" /]


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