Convergence Issues BGP takes minutes to converge because it attempts to explore all possible paths in a monotonically increasing order. This behaviour is is known as path-hunting problem. It also can require O(n!) messages, where the n is the number of routers in the network. It also uses MinRouteAdvertisementInterval (MRAI) timer…

for Network Engineers Personally I been having completed this research on TCP/IP because I had an interview with a established security player… sadly I failed the security questions; as my knowledge in it is very low. However I did learn alot about TCP/IP thanks to my preparation. The Basic Transmission Control Protocol-Internet Protocol (TCP/IP)…

Since I’m doing alot more network automation labs for my portfolio my i7 laptop is lagging behind. With its 2 core it has served it maximum purpose and its best for me to get another rig that is capable to handle the load. After doing some research I decided to…

Following from the previous article…. DHCP options sets Dynamic Host Configuration Protocol (DHCP) provides a standard for passing configuration information to hosts on a TCP/IP network. The options field of a DHCP message contains configuration parameters, including the domain name, domain name server, and the netbios-node-type. domain-name-servers: This defaults to AmazonProvidedDNS. domain-name: It…

Hooray & welcome to Part-11. Congratulate yourself being able to achieve to this level. Internet gateways · An internet gateway is a horizontally scaled, redundant, and highly available VPC component that allows communication between the VPC and the internet. · An internet gateway serves two purposes: to provide a target in the…

In this article I’m continuing with route tables especially focusing on some example options. Routing to an internet gateway Make a subnet a public subnet by adding a route in the subnet route table to an internet gateway. To do this, create and attach an internet gateway to the VPC…

Elastic network interfaces

This is the follow-up from Pt1 of flow logs. Traffic through a NAT gateway In this example, an instance in a private subnet accesses the internet through a NAT gateway that’s in a public subnet.

This time I writting about Flow Logs which is used for traffic monitoring & analyzing purposes. VPC Flow Logs This is a feature to capture information about the IP traffic going to and from network interfaces in the VPC. Flow log data can be published to Amazon CloudWatch Logs or Amazon S3. …