Friday, December 11, 2009

Cisco Call Manager

Cisco_Call_Manager_6.part01.rar

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Cisco_Call_Manager_6.part02.rar

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Cisco_Call_Manager_6.part03.rar

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Cisco_Call_Manager_6.part04.rar

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Cisco_Call_Manager_6.part05.rar

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Cisco_Call_Manager_6.part06.rar

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Cisco_Call_Manager_6.part07.rar

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Cisco_Call_Manager_6.part08.rar

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Cisco_Call_Manager_6.part09.rar

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Cisco_Call_Manager_6.part10.rar

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Cisco_Call_Manager_6.part11.rar

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Cisco_Call_Manager_6.part12.rar

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Cisco_Call_Manager_6.part13.rar

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Cisco_Call_Manager_6.part14.rar

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Cisco_Call_Manager_6.part15.rar

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Cisco_Call_Manager_6.part16.rar

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Cisco_Call_Manager_6.part17.rar

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Cisco_Call_Manager_6.part18.rar

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Cisco_Call_Manager_6.part19.rar

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Cisco_Call_Manager_6.part20.rar

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Cisco_Call_Manager_6.part21.rar

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Cisco_Call_Manager_6.part22.rar

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Cisco_Call_Manager_6.part23.rar

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Cisco_Call_Manager_6.part23.rar

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Cisco_Call_Manager_6.part21.rar

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Cisco_Call_Manager_6.part22.rar

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Cisco_Call_Manager_6.part23.rar

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Cisco_Call_Manager_6.part24.rar

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Cisco_Call_Manager_6.part25.rar

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Cisco_Call_Manager_6.part26.rar

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Cisco_Call_Manager_6.part27.rar

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Cisco_Call_Manager_6.part28.rar

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Cisco_Call_Manager_6.part29.rar

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Cisco_Call_Manager_6.part30.rar

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Cisco_Call_Manager_6.part31.rar

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Cisco_Call_Manager_6.part32.rar

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Cisco_Call_Manager_6.part33.rar

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Cisco_Call_Manager_6.part34.rar

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Cisco_Call_Manager_6.part35.rar

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Cisco_Call_Manager_6.part36.rar

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Cisco_Call_Manager_6.part37.rar

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Cisco_Call_Manager_6.part38.rar

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Cisco_Call_Manager_6.part39.rar

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Cisco_Call_Manager_6.part40.rar

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Cisco_Call_Manager_6.part45.rar

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Cisco_Call_Manager_6.part41.rar

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Cisco_Call_Manager_6.part42.rar

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Cisco_Call_Manager_6.part43.rar

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Cisco_Call_Manager_6.part44.rar

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Cisco_Call_Manager_6.part46.rar

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Cisco_Call_Manager_6.part47.rar

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Cisco_Call_Manager_6.part48.rar

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Cisco_Call_Manager_6.part49.rar

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Cisco_Call_Manager_6.part50.rar

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Cisco_Call_Manager_6.part51.rar

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Cisco_Call_Manager_6.part52.rar

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Cisco_Call_Manager_6.part53.rar

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Cisco_Call_Manager_6.part54.rar

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Cisco_Call_Manager_6.part55.rar

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Cisco_Call_Manager_6.part56.rar

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Cisco_Call_Manager_6.part57.rar

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Cisco_Call_Manager_6.part58.rar

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Cisco_Call_Manager_6.part59.rar

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Cisco_Call_Manager_6.part60.rar

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Cisco_Call_Manager_6.part63.rar

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Cisco_Call_Manager_6.part64.rar

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Cisco_Call_Manager_6.part65.rar

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Cisco_Call_Manager_6.part66.rar

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Cisco_Call_Manager_6.part67.rar

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Cisco_Call_Manager_6.part68.rar

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Cisco_Call_Manager_6.part61.rar

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Cisco_Call_Manager_6.part62.rar

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Cisco_Call_Manager_6.part69.rar

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Cisco_Call_Manager_6.part70.rar

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Cisco_Call_Manager_6.part71.rar

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Cisco_Call_Manager_6.part72.rar

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Cisco_Call_Manager_6.part73.rar

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Cisco_Call_Manager_6.part74.rar

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Cisco_Call_Manager_6.part75.rar

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Cisco_Call_Manager_6.part76.rar

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Cisco_Call_Manager_6.part77.rar

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Saturday, August 29, 2009

[Offer] VTC MCSA&MCSE Collection

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Download Windows File Server

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Thursday, August 6, 2009

How to Check Memory Usage on Linux Servers.



Memory is one of the most important resource components on a server to ensure that process run smooth and fast. Thus, the availability of physical memory for any server is very important, especially for high load web host server which runs database server such as Oracle or MySQL, which require high memory utilization for smooth running. Linux [CentOS] which is popular on cPanel and Plesk web hosting server, comes with several commands and tools to check memory usage on server.

1. meminfo
"/proc/meminfo" contain all your memory usage information when you type:
cat /proc/meminfo
you will get an out of your server memory info, below is an example of meminfo.



2. Using free Command
free displays the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel.

Syntax of free

free -[options]

Following are few examples of free
free -m
The command will display information about physical memory in MB.

free -m -t
Same with “free -m”, but -t switch will display a line containing the totals of physical memory and swap space.

free -m -s 10
The command will display memory status in megabytes on terminal with continuous polling delay at 10 seconds,You can specify any number for delay.



3. Using vmstat Command
vmstat reports information about processes, memory, paging, block IO, traps, and cpu activity. The command will display report based on averages since last reboot.

Syntax of vmstat

vmstat -[options] [delay count]

vmstat 10
The command will pool average system resources usage level for a sampling period of 10 seconds at interval of 10 seconds, except the first result that is averages since the last reboot.
If no delay is specified, only one report is printed with the average values since boot.



4. Using top Command
The top program provides a dynamic real-time view of a running system. It display system summary information as well as a list of tasks currently being managed by the Linux kernel. The memory usage stats by top command includes information used and free physical memory and swap memory with their buffers and cached memory size respectively.

Syntax of top

top
Using top is very simple, Just type "top" at command shell [without ""], it constantly update stats page will be shown.

top -d 2
Same as "top", but "-d" used to Specifies the delay between screen updates after 2 sec.

5. Using ps Command
The ps command [Process Status] is a tool to display the running processes and identifying the programs that are running on the [Unix/Linux] system and the resources they are using, including their process identification numbers (PIDs).
Advantage of ps command is that system admins will be able to see where the memory is used. ps will show the percentage of memory resource that is used by each process or task running in the system. With this command, top memory hogging processes can be identified.

Syntax of ps aux

ps aux
aux is the options for ps command to see every process on the system.

To see only the memory resources occupied by each category of processes, such as Apache httpd, MySQL mysqld or Java, use the following command:

ps aux | awk '{print $4"\t"$11}' | sort | uniq -c | awk '{print $2" "$1" "$3}' | sort -nr

Thursday, July 30, 2009

Classless IN-ADDR.ARPA delegation

In some cases you may be allocated a block of IP addresses smaller than a /24. This is referred to as a Classless Delegation and is explained in technical detail in RFC 2317.

For example, if your ISP allocated the block 192.168.5.224/27 (the 32 IP addresses from 192.168.5.224 to 192.168.5.255), the reverse DNS for this zone would be served out of a zone named

    224-27.5.168.192.in-addr.arpa

Once the zone is created, you'll be able to create PTR entries within this zone for each individual IP address. As an example, to map the IP address 192.168.5.226 to mail.example.com, you would enter:

Host: 226
TTL: 86400
Type: PTR
Data: mail.example.com

Once you have setup the Custom DNS zone for this block, you need to have the block delegated to us. Contact your ISP and have them create NS records for the zone:

   224-27.5.168.192.in-addr.arpa.   86400  IN      NS      ns1.mydyndns.org.
224-27.5.168.192.in-addr.arpa. 86400 IN NS ns2.mydyndns.org.
224-27.5.168.192.in-addr.arpa. 86400 IN NS ns3.mydyndns.org.
224-27.5.168.192.in-addr.arpa. 86400 IN NS ns4.mydyndns.org.
224-27.5.168.192.in-addr.arpa. 86400 IN NS ns5.mydyndns.org.

Your ISP will ALSO need to create individual CNAME records for each IP address they have delegated to you. These CNAME records map the IP addresses into the new name space that has been defined via the 224-27.5.168.192.in-addr.arpa zone.

   224.5.168.192.in-addr.arpa.   86400  IN     CNAME      224.224-27.5.168.192.in-addr.arpa.
225.5.168.192.in-addr.arpa. 86400 IN CNAME 225.224-27.5.168.192.in-addr.arpa.
226.5.168.192.in-addr.arpa. 86400 IN CNAME 226.224-27.5.168.192.in-addr.arpa.
etc...

Until those changes are made, DNS queries for those IP addresses won't come to us, so it is not enough to simply create the zone. You MUST get it delegated to us and have the CNAME entries created in order for the reverse DNS to function.