Welcome to MOBS Bangladesh   Click to listen highlighted text! Welcome to MOBS Bangladesh Powered By GSpeech
Aug 18

Channel9 Video: Deploying and Managing Exchange Server 2013

Download PDF

As a continual effort to let IT folks know that how these Exchange Server 2013 solution works, how to manage and maintain it. Microsoft released those video’s in the Channel9 site on October 2013. Content follows:














Full course outline:

Aug 18

What is ADSI?

Download PDF

ADSI stands for “Active Directory Service Interfaces” Editor which lets you edit & manage Active Directory Objects and it’s attributes, while working for ADDS.

Quoting from TechNet “ADSI Edit (adsiedit.msc) provides a view of every object and attribute in an Active Directory forest. You can use ADSI Edit to query, view, and edit attributes that are not exposed through other AD DS Microsoft Management Console (MMC) snap-ins: Active Directory Users and Computers, Active Directory Sites and Services, Active Directory Domains and Trusts, and Active Directory Schema.”

ADSI is an LDAP (Lightweight Directory Access Protocol) which let’s you edit AD Objects and it’s attributes as mentioned earlier. There is another editor Microsoft provides is the “ldp” editor.

More on ldp: http://go.microsoft.com/fwlink/?LinkId=143517

ADSI edit comes as an MMC snap-in. In most recent operating systems ADSI comes as a standard tool for maintaining AD objects. This service automatically loads in with the current user statistics and loads the current domain in it’s pane. The following snapshot is the GUI for the ADSIeditor.
















***Picture Taken from TechNet

More on ADSI Edit: http://technet.microsoft.com/en-us/library/cc731547.aspx



comments: Closed tags: , ,
Aug 15

Windows Server Schema Versions

Download PDF

Since the introduction of Active Directory, Microsoft added new classes and attributes to the schema with each Windows Release which addedd more and more functionality to the AD. Here is the version table just to understand the versioning.

Windows   Server version Schema   version
Windows 2000 Server 13
Windows Server 2003 30
Windows Server 2003 R2 31
Windows Server 2008 44
Windows Server 2008 R2 47
Windows Server 2012 56
Windows Server 2012 R2 69


Use the Get-ADObject cmdlet in the Windows PowerShell to get the version of the schema of your AD.

PS C:\> Get-ADObject (Get-ADRootDSE).schemaNamingContext -Properties objectversion

Download the following file for you to understand more of  “Combined Active Directory Schema Classes and Attributes for Windows Server”

Follow Link: http://www.microsoft.com/en-us/download/details.aspx?id=23782

Schema Version Attribute: http://msdn.microsoft.com/en-us/library/ms679651%28v=vs.85%29.aspx

comments: Closed tags: ,
Aug 14

Windows Server 2012 R2 Preview: Creating Your First Active Directory

Download PDF

This video demonstrates Deploying Active Directory for a New Forest.

My YouTube Link: https://www.youtube.com/watch?v=glH8mfw7IH8

And the video Follows:

please install flash
comments: Closed tags:
Aug 14

Network Loop Prevention with STP 802.1d

Download PDF

I am sure most of you computer geeks out there knows about the Spanning Tree Protocol and how it works. So the basics here just for a heads up. STP is a network protocol standard set by IEEE. The purpose of Spanning Tree is to prevent loops in the LAN and to select the fastest network links, if there are redundant links available in the network. Naturally the first question pops in your mind would be “What routers are doing then?”. Well routing protocols helps devices to route between different networks on Layer-3 network. But you should know that it’s not a routing protocol but has similar not identical functions for the Data Link Layer (Layer-2).

Configuring Spanning Tree on Cisco: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4000/8-2glx/configuration/guide/spantree.pdf

Now the part comes why it’s used to control network loops. Because the ports are put into ready-state, and these are best ports. A real usage is that when a new switch is introduced in the network, all the port states are recalculated by the algorithm. The port states are also gets recalculated when the port states are down as well.

Here is a Cisco Layout for the States: https://learningnetwork.cisco.com/thread/34579


IEEE 802.1D Path Cost Parameter Values

Link Speed Recommended
4 Mbps 250 100-1000 1-65535
10 Mbps 100 50-600 1-65535
16 Mbps 62 40-400 1-65535
100 Mbps 19 10-60 1-65535
1 Gbps 4 3-10 1-65535
10 Gbps 2 1-5 1-65535

IEEE 802.1t Path Cost Parameter Values

Link Speed Recommended
10 Mbps 2.000.000 200.000-20.000.000 1-200.000.000
100 Mbps 200.000 20.000-2.000.000 1-200.000.000
1 Gbps 20.000 2.000-200.000 1-200.000.000
10 Gbps 2.000 200-20.000 1-200.000.000
100 Gbps 200 20-2.000 1-200.000.000
1 Tbps 20 2-200 1-200.000.000
10 Tbps 2 1-20 1-200.000.000

Default Observed on Cisco Switches

Speed Port Cost Comment
10 Mbps 100 Ethernet
20 Mbps 56 EtherChannel
30 Mbps 47 EtherChannel
40 Mbps 41 EtherChannel
50 Mbps 35 EtherChannel
54 Mbps 33 802.11 wireless
60 Mbps 30 EtherChannel
70 Mbps 26 EtherChannel
80 Mbps 23 EtherChannel
100 Mbps 19 Fast Ethernet
200 Mbps 12 Fast EtherChannel
300 Mbps 9 Fast EtherChannel
400 Mbps 8 Fast EtherChannel
500 Mbps 7 Fast EtherChannel
600 Mbps 6 Fast EtherChannel
700 Mbps 5 Fast EtherChannel
800 Mbps 5 Fast EtherChannel
1 Gbps 4 Gigabit Ethernet
2 Gbps 3 Gigabit EtherChannel
10 Gbps 2 10G Ethernet
20 Gbps 1 20G EtherChannel
40 Gbps 1 40G EtherChannel
comments: Closed tags: ,
Click to listen highlighted text! Powered By GSpeech