Author: Chris
Error-vami.netmask0.VM_1
While installing "VMware vCenter Operation Manager Appliance", popped below error message. " Cannot initialize property ‘vami.netmask0.VM_1′ since network ‘VM Network’ has no associated IP…
Failed to join Active Directory Domain Controller
Below error message has received when XP professional desktop was joining a domain. An Active Directory Domain Controller(AD DC) for the domain "local.dethink.com" could…
VMWare ESXi NIC teaming load-balancing issue
I have been researching and googling to clarify how VMWare NIC teaming is behaving load-balancing traffic between ESXi host and switch. Here is known…
How to configure MS Windows 2012 server as Domain Controller
Here is the step 1. Change server/computer name – Ex) WINDC01 2. Assign a static IP address 3. From Server Manager > Configure…
Free up disk space from Windows srv 2008 R2
The command is "dism /online /cleanup-image /spsuperseded" It will give you back about 5GB (max)
Avaya ERS 55xx NTP setting
Out of the box, Avaya ERS 55xx switch system will indicate below time clock. ERS_5520# show clock System Clock time : THU JAN…
Ruby script sample – IP address
He is a sample Ruby scripting for IP address for num in 1…10 ip = "1.1.1.#{num}" puts "#{ip}" end Output> 1.1.1.1 1.1.1.2 1.1.1.3…
Understanding about VMware ESXi and vCenter
1. What license do we need? Functional Comparison Chart Price Comparision Chart 2. Snapshot vs Clone 3. VM migrations …
Expect script for SSH login network a device
Objective : Verify 100 Nortel IP phone SSH login. IP range : 10.10.10.11 ~ 254 SSH credential = login / pwd = admin / ipb@l@nce…
MAC address format convert with excel
Format : 001122334455 -> 00:11:22:33:44:55 From MS Excel, 1. Put a raw MAC address : ex) 001122334455 on A1 2. Copy and paste…
Ethernet frame and MTU
Ethernet Frame Sizes Standard Ethernet Frame (without 802.1Q): Total Size: 1518 Bytes Breakdown: Destination MAC: 6 Bytes Source MAC: 6 Bytes Type: 2 Bytes Data:…
How to configure netflow on Cisco devices
Here is step to configure Netflow on Cisco switches or Router Step 1: Enabling NetFlow Cisco(config-if)# ip flow-export version 5 or 9 *…
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