Kentik

APRIL 4, 2023

Be it power supplies, servers, routers, load balancers, proxies, or any other physical and virtual network components, the horizontal scaling that redundancy provides is the ultimate safety net in the presence of failure or atypical traffic demands. Top talkers are often the cause of outages for application stacks.

Cloud 104

Cloud Network Networking Bandwidth 104

Kentik

FEBRUARY 8, 2016

Designed before the dawn of the commercial Internet, the Border Gateway Protocol (BGP) is a policy-based routing protocol that has long been an established part of the Internet infrastructure. An internal routing scheme so that every router in a given AS knows how to get to every other router and destination within the same AS.

Advertising 49

Advertising Routers Internet Protocol 49

Kentik

JANUARY 13, 2021

Sometimes, your connections don’t have enough bandwidth. Send these pings using the Internet Control Message Protocol (ICMP) or TCP to one or any of the devices you believe to be involved. Ping is a utility that’s available on practically every system, be it a desktop, server, router, or switch. Packets simply get dropped.

Network 114

Network Networking TCP Protocol 114

CATO Networks

OCTOBER 30, 2019

Network packets, the protocol data units (PDUs) of the network layer, are often taken for granted by network pros. Routers forward these packets from source to destination and data encapsulation enables the data to traverse the TCP/IP stack. Common causes of packet loss include: Routers with heavy CPU load. tracert/traceroute.

WAN 52

WAN Routers TCP Protocol 52

Kentik

APRIL 24, 2017

Comparing flow protocols for real-world large-scale networks. A lot of ink has been spilled over the years on the topic of flow protocols, specifically how they work and their relative accuracy. Historically, however, most of the testing, opinion, and coverage has been based on enterprise use cases and fairly low-bandwidth assumptions.

Protocol 40

Protocol Routers Bandwidth Internet 40

Kentik

MAY 29, 2018

Modern networks are made up of a collection of routers, switches, firewalls, and other network elements. Bandwidth utilization at various points in the network. Establish the degree to which sources, destinations, network devices, users, applications, protocols, and services are generating traffic.

Network 52

Network Networking Bandwidth Data Centers 52

Kentik

APRIL 18, 2016

While NetFlow v9 and it’s follow-on protocol IPFIX offer tremendous flexibility there are some tradeoffs including complexity of implementation and the fact that a template must be received before the underlying flow data records can be correctly understood. The sFlow difference.

Protocol 40

Protocol Routers Encryption IP Address 40

CATO Networks

NOVEMBER 15, 2017

Multiprotocol label switching protocol (MPLS) based networks, can no longer answer the business needs of a global enterprise. MPLS circuits are extremely expensive, with a router required at each site, access circuits, bandwidth cost, and the associated CoS fee. Here is why.

MPLS 52

MPLS WAN Cloud Wide Area Network 52

Kentik

JANUARY 29, 2020

SNMP is the oldest of the network management protocols in use today. Flow can also be used to understand consumption of bandwidth in a more granular manner. Essentially, while SNMP provides the answer to “what” is happening on the network, flow technologies answer the “where” and “who.” When is SNMP Used?

Port 16

Port Network Networking Data Centers 16

Kentik

JANUARY 29, 2020

SNMP is the oldest of the network management protocols in use today. Flow can also be used to understand consumption of bandwidth in a more granular manner. Essentially, while SNMP provides the answer to “what” is happening on the network, flow technologies answer the “where” and “who.” When is SNMP Used?

Port 78

Port Network Networking Data Centers 78

CATO Networks

JUNE 1, 2020

The challenge in the underlying causes of packet loss can be anything from overworked routers to network congestion to software bugs. Proxy TCP Connections Fundamentally, TCP (Transmission Control Protocol) connections inherently add more overhead than their UDP (User Datagram Protocol) counterparts.

Network 52

Network Networking TCP MPLS 52

Kentik

MAY 28, 2018

Modern networks are made up of a collection of routers, switches, firewalls, and other network elements. Establish the degree to which sources, destinations, devices, users, applications, protocols, and services are generating traffic. Accurately assess the network impact of new services.

Network 40

Network Networking Bandwidth Data Centers 40

CATO Networks

JUNE 5, 2023

Often, organizations will deploy SD-WAN routers at their branch locations and near their cloud edge. Design for Scalability Corporate bandwidth requirements are continuously increasing, and SD-WAN should be scalable to support current and future network requirements. SD-WAN is also beneficial for remote workers.

WAN 52

WAN SASE Network Security Cloud 52

Engineering at Meta

NOVEMBER 21, 2022

Meta is deploying a timing protocol, Precision Time Protocol (PTP) , that will offer new levels of accuracy and precision to our networks and data centers. Meta is deploying a network timing protocol, Precision Time Protocol (PTP) , to improve the accuracy and precision across our networks as well as in many use cases.

Data Centers 53

Data Centers Server Network Networking 53

CATO Networks

NOVEMBER 19, 2019

The upside here was simple: public Internet bandwidth is significantly cheaper than MPLS bandwidth. Increased attack surface While it is true that VPN uses secure protocols like IPsec (IP Security) and TLS (Transport Layer Security) to tunnel traffic, a lack of granular security controls can lead to unnecessary risk.

VPN 40

VPN WAN Internet MPLS 40

CATO Networks

MARCH 5, 2017

SD-WANs Arent Enough Leveraging Direct Internet Access (DIA) allows SD-WANs to improve agility and reduce bandwidth costs, but fails to address, and sometimes exacerbates, other critical challenges. DIA also means IT can reduce their monthly bandwidth spend by as much as 90 percent.

WAN 52

WAN Network Networking Internet 52

CATO Networks

APRIL 19, 2017

Easy and Rapid Configuration For years, WAN engineering has meant learning CLIs and scripts, mastering protocols like BGP, OSPF, PBR, and more. The SD-WAN node will load balance the connections, maximize their use of available bandwidth. It was an arcane art and CCIEs were the master craftsman of the trade.

WAN 40

WAN MPLS Wide Area Network Firewall 40