How to change Timezone in VOS3000 after VOS3000 installation

Some tome you want to change Timezone in VOS3000 after VOS3000 installation For Example I want to change my Time zone to Asia/Shanghai

 

easy way to change time zone on centos  run the system command 

# system-config-date

and select your timezone

timezone

 

 

 

 

 

 

 

 

 

 

 

 

 

click OK   and reboot the server.

if  system-config-date  command is not working then install this tool 

# yum install system-config-date

manual way to do this is follow the below steps.

Reinstall Timezone database

# yum -y reinstall tzdata

Install NTP Client to accurate time according to time zone

# yum -y install ntp # chkconfig ntpd on # service ntpd restart

Read more

How to find Cisco software or IOS Features

  Find image details by release or platform that support selected features http://tools.cisco.com/ITDIT/CFN/jsp/by-feature-technology.jsp Find software image  supported features http://tools.cisco.com/ITDIT/CFN/jsp/SearchBySoftware.jsp Compare software images features http://tools.cisco.com/ITDIT/CFN/jsp/compareImages.jsp Software images End of Life http://tools.cisco.com/ITDIT/CFN/jsp/eolMileStoneMultiple.jsp  

CCIE Voice Evolves to CCIE Collaboration

During this 10th anniversary year of the CCIE Voice certification, Cisco is pleased to announce the next generation of Expert-level IT skills training and assessment for telecom, unified communications, and video staff. CCIE Voice is evolving to become CCIE Collaboration, reflecting advances in networked collaboration solutions beyond simple audio phone calls. The new CCIE Collaboration certification will expand to include Cisco’s leading solutions for voice, video, IM, presence, and call centers. The CCIE Voice certification will be retired as of February 14, 2014.

Read more

netstat command example

netstat command example

Important command for TCP/IP ports status

1. List All Ports (both listening and non listening ports)

List all ports using netstat -a
# netstat -a | more
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 localhost:30037 *:* LISTEN
udp 0 0 *:bootpc *:*

Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node Path
unix 2 [ ACC ] STREAM LISTENING 6135 /tmp/.X11-unix/X0
unix 2 [ ACC ] STREAM LISTENING 5140 /var/run/acpid.socket
List all tcp ports using netstat -at
# netstat -at
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 localhost:30037 *:* LISTEN
tcp 0 0 localhost:ipp *:* LISTEN
tcp 0 0 *:smtp *:* LISTEN
tcp6 0 0 localhost:ipp [::]:* LISTEN

Read more

How to create CCIE RS Lab on GNS3

How to create CCIE RS Lab on GNS3

1- Download GNS3 
2-Install GNS3 (How to install and configure GNS3)
3-Search Cisco IOS Image c3725-adventerprisek9-mz.124-15.T10.bin in google and download it. and copy the IOS file (c3725-adventerprisek9-mz.124-15.T10.bin)  to C:\IOS Folder.

Create below folders
C:\IOS
C:\GNS3CCIERS_LAB
C:\GNS3CCIERS_LAB\GNS_configs
C:\GNS3CCIERS_LAB\GNS_working 

Read more

How to install Cisco Unified Communication Manager 7 on VMware Workstation

How to install Cisco Unified Communication Manager 7 on VMware Workstation

Below are the steps I have taken to install CUCM ver 7.0 on my LAB.
I am expecting you know how to install and configure VMware workstation and How to create Virtual Machine
VMware workstation version 9
RAM minimum 2 GB
HDD minimum 80 GB (Split virtual disk in to multiple file)
CPU minimum 1 CPU 

Read more