Port numbers are use by TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) while Protocol numbers are reserved number used to identify protocols
(Interior Gateway Protocol)
- Routing Information Protocol (RIP v2) – UDP port 520
- Open Shortest Path First (OSPF) – IP Protocol 89
- *Interior Gateway Routing Protocol (IGRP) – IP Protocol 9
- *Enhanced Interior Gateway Routing Protocol (EIGRP) – IP Protocol 88
- Intermediate System-to-Intermediate System Protocol (IS-IS) - Runs natively on layer 2 of OSI model (Ethernet/PPP)
(Exterior Gateway Protocol)
- Border Gateway Protocol (BGP) – TCP port 179
This session discuss and demonstrate new Active Directory functionality that comes with Windows Server 8. Active Directory has been a crucial component of the server system upon authentication and access control. Let see how these new improvement help to ease the frustration and support our IT pros.
• Dcpromo (Enhancement)
• AD GUI Recycle-Bin (Enhancement)
• Fine-grained password policies (Enhancement)
• Dynamic Access Control (AD Central Policy)
• AD based volume activation
Here’s the Slide: https://skydrive.live.com/#!/view.aspx?cid=7A652ADDF155994C&resid=7A652ADDF155994C%211972
Install Windows Server 8 serveral times. Only now got the time to create the screenshot.
Here is the article I wrote: http://cid-7a652addf155994c.skydrive.live.com/self.aspx/Share/Install%20Windows%20Server%208%20in%20Virtual%20Box.pdf
Singapore MVPs‟ Gazette is a publication of the SE Asia MVP Team exclusively distributed to Microsoft staff. And I am one of the lucky MVP to express my opinions and views in this gazette.
To read the full document, click the link to download the pdf: SingaporeMVPGazette
Hi All, I have created a Video Demo on “HP A-Series (Basic Configuration) – Lesson 2: Link Aggregation ”. In the demonstration, I will show you how to configure Link Aggregation to have failover redundancy between links.
Click on the following link to view: http://www.youtube.com/watch?v=KBPOoBG-miw
I have created a Video Demo on “HP A-Series (Basic Configuration) – Lesson 1:Different types of vlans”. In the demonstration, I will show you how to configure between different types of Vlan.
Click on the following link to view: http://www.youtube.com/watch?v=FEYCCJKSCS4
ICMP “Echo-Request” packet is send during “Ping” to destination device. If destination device receives the packet, it will send return “Echo-Reply” packets.
Nowadays, many devices uses firewall or “Access control List” to block ICMP in order to prevent “Ping of Death – (Denial of Service attack)”. ICMP doesn’t use port but rather than code.
Echo-Reply – Code 0
Echo-Request – Code 8
So can I use Layer 3 switch to replace Router?? Often when this question is being raise, audience will give the following answers stated below:
- Yes, No or Maybe
- Save cost as Router more expensive
- Manageability – Switches are easier to handle or configure
- Switch can support layer 2 and layer 3 so in term of performance and scalability is better
- Switches are faster than Router cause:
– Router packet switching in done on MicroProcessor
– Layer 3 switch packet switching is done on “Application specific integrated circuit” (ASIC) chip
One of the main reason why I need Router:
Most Layer 3 switches only support “Interior Gateway Protocols” (IGP) stated below handling packets routing within an Autonomous System (AS) – “Routing Domain”.
- ”Routing Information Protocol” RIP”
- “Opens Shortest Path First” (OSPF)
Most Layer 3 switches does not support ”Exterior Gateway Protocol” (EGP) like ”Border Gateway Protocol” BGP which handle routing outside Autonomous System, getting packets from your internal network to the Internet. On the Internet, you must use BGP.
While most of you are trying to transit from IPv4 to Ipv6 addressing, have you ever ask yourself: Why there isn’t IPv5?
Here is the article I wrote: http://cid-7a652addf155994c.office.live.com/self.aspx/Share/Why%20there%20isn%5E4t%20IPv5.pdf