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Author Archives: Gkhan
Cisco CME and ephone Button Command attribues
Cisco CME and ephone Button Command attributes : Normal Ring b Call waiting Beep No ring f Feature Ring m Monitor mode o … Continue reading
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How to configure second interface in vCenter Server Appliance
How to configure second interface in vCenter Server Appliance Some time we require one more ethernet to be configured in vCenter Server Appliance . It does not shows in vCenter web interface to configure it .below are the small trick … Continue reading
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How to assign IP address manually vCenter Appliance
How to assign IP address manually vCenter Appliance Login to vCenter Appliance Login as: root Default password is: vmware Execute the following command: /opt/vmware/share/vami/vami_config_net After executing the command, a menu is displayed. Within the menu It is possible to change … Continue reading
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How to configure cisco router as NTP server
How to configure Cisco router as NTP server 1- you have to obtain public NTP server addresses from www.ntp.org 2- configure you router with NTP server IP GK_RTR#configure terminal GK_RTR(config)#ntp server 64.209.210.20 GK_RTR(config)#ntp source lo GK_RTR(config)# ntp master GK_RTR(config)#clock timezone … Continue reading
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Cisco Router as DHCP Server
Cisco Router as DHCP Server Using a Cisco router as a DHCP server is a somewhat common practice in smaller networks.In this example we have two VLANs one for Voice and one for DATA. DATA VLAN IP Nework Range 172.16.1.0 … Continue reading
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How to calculate PVDM requirement for Cisco IP Telephony
How to calculate PVDM requirement for Cisco IP Telephony DSP (Digital Signal Processors) is a chip that performs all the sampling, encoding, and compression functions on audio coming into your router .DSPs typically come in chips to install in your Cisco … Continue reading
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How to configure T1/E1 controller on Cisco 2800 router
How to configure T1/E1 controller on Cisco 2800 router 1- check physical location of card slot to check run command # sh diag it will show you WIC slot no WIC Slot 0: VWIC2-1MFT-T1/E1 – 1-Port RJ-48 Multiflex Trunk – … Continue reading
ISDN T1 E1 Troubleshooting TEI_ASSIGNED
ISDN T1 E1 Troubleshooting TEI_ASSIGNED ISDN Status as TEI_ASSIGNED meaning Which indicates that the PRI does not exchange Layer 2 frames with the Telco switch. Use the show controller e1 x command to first check the controller t1 circuit, and … Continue reading
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Remote Host Identification Has Changed error and solution
Remote Host Identification Has Changed error and solution When we run scp command to copy data to remote host its gives us error @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING … Continue reading
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VOS3000 Hacking prevention and protection
VOS3000 Hacking prevention and protection VOS3000 old versions are being hacked . its costing too much money through illegal calls . you can prevent it some level by taking some precaution . 1- Make your server SSH root password complicated … Continue reading
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