Kentik

OCTOBER 4, 2021

Yesterday the world’s largest social media platform suffered a global outage of all of its services for nearly six hours. The result was that users worldwide were unable to resolve any domain belonging to Facebook, effectively rendering all of the social media giant’s various services completely unusable. So what happened?

TCP 145

TCP DNS Server Media 145

Kentik

JANUARY 24, 2022

Back in the 1990s, NetFlow was introduced on Cisco routers as a means to collect information about IP network traffic as it enters or exits an interface. Perhaps you want to know if the traffic you are investigating is related to video streaming, voice or social media. Source port for UDP or TCP, 0 for other protocols.

Application 96

Application IP Address DNS Port 96

Kentik

MAY 8, 2023

Message integrity and guaranteed delivery with TCP/IP Because IP does not require acknowledgments from endpoints, it does not ensure delivery; therefore, it is considered an unreliable protocol. On the other hand, Transmission Control Protocol (TCP) provides a connection-based, reliable byte stream.

Network 52

Network Networking IP Address TCP 52

CATO Networks

JUNE 1, 2020

Similarly, slow networks can lead to painfully slow file transfers for large media files or CAD (computer-aided design). The challenge in the underlying causes of packet loss can be anything from overworked routers to network congestion to software bugs.

Network 52

Network Networking TCP MPLS 52

CATO Networks

MAY 21, 2018

Real-time traffic is interleaved with a range of other traffic, such as web browsing, streaming media, and other applications. If a link becomes congested, Internet routers use Random Early Discard (RED) queuing algorithms to reduce the flow rate of TCP sessions, dropping packets as necessary.

Internet 40

Internet MPLS WAN Media 40

Network Engineering

DECEMBER 11, 2023

We have a block of static IPs facing the public, and have to have a router which points all the traffic to our router/gateway which points all the traffic to the ISP. Right now, all traffic has a static rule to send all traffic to the ISP gateway on the router at the edge going to the hand off. network subnet 10.113.0.0

VPN 52

VPN Port Protocol WAN 52

Kentik

NOVEMBER 15, 2017

that we don’t typically get from flow data that comes from routers and switches. For analysis of the Level 3 route leak, we opened the Data Explorer section of the Kentik portal and set a query to look at total TCP retransmits per second (an indirect measurement of packet loss) around the time of the incident on November 6.

Internet 40

Internet Application Network Networking 40