Author: Author: Richard Pateau

DHCP is a protocol used to automatically assign IP addresses to devices on a network. There are two DHCP features that I want to talk about today which are “release” and “renew.”  Release- When a client sends a DHCP release, the host is prematurely relinquishing its IP address lease. When IP address leases are assigned…

DHCP is a network management protocol that is used to automatically assign IP addresses to devices on a local network. This is done through broadcasting DHCP messages so the DHCP server can respond. But what if the DHCP server is located on another subnet? This is where a DHCP relay agent takes over. Relay Agent–…

DORA- Today I am going to talk about DHCP which stands for Dynamic Host Configuration Protocol. DHCP is a network management protocol that is used to dynamically assign IP addresses and other network configuration parameters to devices automatically. DHCP reduces manually having to assign device after device. DHCP is stateful, meaning that every IP address…

Today I am going to talk about DNS which stands for Domain Name System. DNS is a system that allows for users to access web servers or websites via human-readable domain names instead of an IP number. An IP address consists of 32 bits, and is formatted in dotted decimal format to make it more…

Today I am going to talk about ACL which means Access Control Lists. ACLs are used to filter traffic based on a certain kind of criteria which are usually found in IP headers. ACLs can be used on their own but can also be used with protocols such as NAT and NTP. NAT uses ACLs…

Today I am going to talk about DAD which is Duplicate Address Detection. DAD is widely used in IPv6 networks to prevent multiple devices from having a duplicate address on the local link.  When a device is assigned an IPv6 address, the device uses DAD to ensure that the IPv6 address is not already in…

With the introduction of IPv6 came different ways for the same things to get done. For example address resolution can now be done with NDP which stands for Neighbor Discovery Protocol. NDP not only can perform address resolution but also perform DAD (Duplicate Address Detection) and router discovery. These functions are carried out by ICMPv6…

When it comes to IPv6 as you probably know multicast is used a lot! It essentially replaces functions that operate on broadcasts and replaces it with multicast instead. One of the ways that multicast is more efficient than broadcast is its ability to target a specific amount of people rather than every single person on…

Today I am going to talk about the IPv6 header and the purpose of each field inside of the header. The IPv6 header unlike the IPv4 header is fixed meaning it will always remain 40 bytes. It consists of similar fields as IPv4 but with different names. (PIC)  Version- The IPv6 header starts off with…