A.J.Anto's WebLog

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  • A.J.Anto's WebLog

    Hello, World

    • 75 Comments
    Hello World, This is my first post. God bless the Net.
  • A.J.Anto's WebLog

    This thing called RFC.

    • 62 Comments
    One of the other things, I routinely do is read up IETF published Request for Comments. Most of the RFC's describe a networking protocol. Simply put, I believe that if you want to understand the architecture of the Internet, you have to read the RFC's...
  • A.J.Anto's WebLog

    How to duplicate reservations from one server to another?

    • 50 Comments
    The problematic scenario is the following: There are two DHCP servers serving the same set of subnets. For each of the subnets which is being served by both the servers there are two scopes one for each server. The scopes are configured in a way that...
  • A.J.Anto's WebLog

    All about the DHCP server callout API functions.

    • 34 Comments
    Ah now for the best part. I had always wanted to test this callout API thing. This is perhaps the most powerful way to leverage your Windows DHCP server. With the DHCP server callout, in a way, the whole DHCP server source code is before you for you to...
  • A.J.Anto's WebLog

    This is who I am.

    • 17 Comments
    Let me introduce myself. I am A.J.Anto. I work for Microsoft India Development Center. My Job title reads "Software Design Engineer". I am in the DHCP project. This is my first job out of school. I did my B.E. computer science and engineering from College...
  • A.J.Anto's WebLog

    All about DHCP vendor classes and user classes.

    • 8 Comments
    Fundamentally vendor classes were introduced to re-use the option id’s in a vendor specific way. Since these are options specific to a given vendor and their scope is very limited to that vendor, it cannot afford to have a option in the list 1-255 as...
  • A.J.Anto's WebLog

    Win2K3 SP1 RTM's

    • 8 Comments
    The best Server OS just got better! http://www.microsoft.com/downloads/details.aspx?familyid=22CFC239-337C-4D81-8354-72593B1C1F43&displaylang=en The Windows Server 2003 Service Pack1 RTM's.
  • A.J.Anto's WebLog

    Follow-up article on DHCP server callout DLL.

    • 7 Comments
    Hi all, I got a VS.NET solution for the sample DHCP server callout DLL. I have shared it to the world here: http://www.geocities.com/anto_rocks/DHCPCalloutDL.zip . Please let me know of any copyright issues as i do not know who wrote this code. I suppose...
  • A.J.Anto's WebLog

    DHCP Documentation

    • 7 Comments
    Documentation related to Windows DHCP Server and Client. 1) Windows Server 2003 a. Windows Server 2003 Main Technical Reference: This link has information about: I. Checklists for installing the service II. Best Practices...
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    How to set DHCP scope lease time through netsh?

    • 6 Comments
    In this post, I am going to talk about how to set the lease time for a given scope in the DHCP server through netsh command-line. The command is a little unintuitive considering the fact that you won't be mentioning anything about lease time in the command...
  • A.J.Anto's WebLog

    Why are some of the addresses in the Address Leases for a given scope are marked as BAD_ADDRESS in the DHCP snap-in?

    • 4 Comments
    Today when I entered my office, the first thing that happened was the admin for our lab was asking me to debug an issue in which the DHCP server which doles out IP Addresses in our lab was out of addresses. This prevents the DHCP clients from joining...
  • A.J.Anto's WebLog

    Let's set the ball rolling.

    • 3 Comments
    As I am getting a whole lot of DHCP questions from customers on a daily basis, I thought I should compile them all (including the answers of course) into a FAQ and put it here. Any takers?
  • A.J.Anto's WebLog

    Follow-up article on how to set lease times through netsh.

    • 3 Comments
    Question: I have a customer that has 5 DHCP servers that host many scopes. The customer wants to know of a way to script changing the lease duration on the advanced page of the properties of the scope (because they also have Bootp clients). Anybody have...
  • A.J.Anto's WebLog

    RManager - A tool to manage reservations

    • 2 Comments
    Reservation Manager: Reservations are a critical feature in the DHCP server. Reservations’ are generally used for centralized static IP address assignment for critical machines. This way the IP address of the critical machines which serves critical functions...
  • A.J.Anto's WebLog

    How to find out all the active clients serviced by your DHCP server

    • 2 Comments
    In this post, I am going to discuss about the various ways by which you can enumerate all the client leases of the DHCP server. The reasons why you might want to do this can be many: You might want to do this when we want to have a single list of all...
  • A.J.Anto's WebLog

    Join me in the chat.

    • 1 Comments
    One last reminder...... Enter here: http://www.microsoft.com/technet/community/chats/chatroom.aspx Date: 3/3/05 Today! Time: 9:30 – 11am PST. Join us to discuss tips, techniques and best practices to Configure and Deploy DHCP with Windows Server 2003...
  • A.J.Anto's WebLog

    Join me in the chat!

    • 1 Comments
    Hi all, My team which is involved in the development of DHCP service is preparing for a upcoming chat session titled: Configuring and Deploying DHCP with Windows Server 2003, Part 3. Join us on January 20, 2005 to discuss tips, techniques and best practices...
  • A.J.Anto's WebLog

    My Religion

    • 1 Comments
    My Religion: Let me begin with a dictionary of religion. Religion: 1) Institution to express belief in a divine power. 2) A strong belief in a supernatural power or powers that control human destiny. Well, to let you know a bit about myself, I am a Roman...
  • A.J.Anto's WebLog

    How to programatically set/view the DNS settings.

    • 1 Comments
    How to programmactically set/view the DNS settings that we set in the DNS tab of the Server/Scope/Reservation property page? Before we investigate how to retrieve this information, let me first explain to you that this information is persisted as a DHCP...
  • A.J.Anto's WebLog

    Windows 2003 SP1 DHCP export/import netsh commands failure on IA64 platform

    • 1 Comments
    Hi all, This post is regarding an issue that plagues the Windows Server 2003 SP1 on Itanium 64 platforms. The problem is that the netsh export/import commands fail on these cases with the following error: DHCP Server import and export are allowed on...
  • A.J.Anto's WebLog

    About "Default Routing and Remote Access Class"

    • 1 Comments
    The following is a question i received from one of the internal groups and my answer to the same. I hope you find the information usefull. Question: I am trying to configure options to be applied specifically to workstations that make a vpn connection...
  • A.J.Anto's WebLog

    How to override the system default for the threshold for the event 1020.

    • 0 Comments
    Question: How can I change the threshold value for firing of event 1020. Event 1020 fired by the DHCP server is fired whenever the amount of free addresses in a scope is less than 80%. E.g: Event Type: Warning Event Source: DhcpServer Event Category...
  • A.J.Anto's WebLog

    Manage your server from your desktop!

    • 0 Comments
    In this post, I am going to talk about an interesting way to manage your Windows Servers. One of the things that would certainly be a good thing to have is the freedom to use your desktop environment to monitor and configure your servers. The advantages...
  • A.J.Anto's WebLog

    What it takes to get a lease.........

    • 0 Comments
    Hi all, I found this pretty useful content in one of our internal DL's. I thought it should be available more widely. The following describes what it takes to get a address lease from the DHCP client. It describes the various steps taken by the...
  • A.J.Anto's WebLog

    A very good article on DHCP technology.

    • 0 Comments
    Hi all, The person (Balint Toth) who gave the contents of the previous post pointed out this link. This link really good description of the DHCP technology. A must read i must say: http://www.microsoft.com/technet/prodtechnol/windowsserver2003/library...
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