Kentik

SEPTEMBER 20, 2021

Packet loss in TCP connections results in retransmissions which can introduce significant latency. Below is the beginning of a TCP handshake. After the DNS lookup and the ARP, the host reaches out to the IP address of the destination using a SYN in order to open a connection. Router hops introduce the most.

TCP 116

TCP Routers Bandwidth IP Address 116

DoorDash Engineering

AUGUST 15, 2023

We decided to seek potential solutions that could provide a more complete and unified picture of our networking topology. With these hooks, we can intercept and understand TCP and UDP connections across our multiple Kubernetes clusters. For TCP, we use two probes to track when a connection is initiated and when it is closed.

DNS 84

DNS TCP Application Network 84

Kentik

MAY 8, 2023

This includes the ability to: Dynamically adjust to changes in network topology Detect and respond to outages Route around faults in order to maintain connectivity and service levels. On the other hand, Transmission Control Protocol (TCP) provides a connection-based, reliable byte stream.

Network 52

Network Networking IP Address TCP 52

Kentik

DECEMBER 18, 2019

These include SNMP, DNS, RADIUS and streaming telemetry. While we were able to scale connections and achieved a mostly uniform distribution among the peering nodes (example below), our setup was still not really IPv6 ready and needed full exaBGP restarts upon any topology modification, resulting in BGP flaps for customers.

Server 13

Server Topology TCP Network 13

Kentik

JUNE 14, 2023

An engineer standing in front of a console today stares at the traffic moving from their on-prem data center up and out to a CASB, receiving DNS responses from a cloud-provided DNS service, and then on through an ephemeral microservices architecture in a public cloud. And this, of course, is just to reach the front end.

WAN 59

WAN Data Centers DNS Internet 59