What is the difference between end to end and p2p?

Peer to Peer is from a peer computing device to another peer computing device. Examples of the obvious, most notorious, Napster! End to end can be between any two devices on the network, not necessarily peers. Routers, switches, muxes, servers, firewalls, etc…

Why is PTP needed?

PTP fills a clock-synchronization need between NTP and GPS-based clock synchronization, with accuracy to 1 μs. There are two reasons to use PTP instead of GPS. One is that in a PTP network only one GPS receiver is needed, which is less expensive than giving each network node its own GPS receiver.

How accurate is PTP?

The updates compensate for any switches in the path and give the event messages accuracy within one picosecond. PTP sends a message between the Master and Member device(s) to determine delay.

What is PTP multicast?

PTP is a time synchronization protocol defined in IEEE 1588 for nodes distributed across a network. PTP operates within a logical scope called a PTP domain. PTP supports the following functionality: • Multicast and unicast PTP transport—In the multicast transport mode, PTP uses multicast destination IP address 224.0.

Is peer-to-peer encrypted?

P2P encryption is an emerging technology; one that may be helpful for many companies, especially merchants.

What is peer-to-peer encryption?

These kinds of messaging apps claim to use a process named peer-to-peer encryption which is a system of communication where the only people who can read the messages sent back and forth to each other, are the two people engaging in the conversation.

Why PTP is more accurate than NTP?

For that reason alone, PTP networks have much sharper time resolutions, and unlike NTP, PTP devices will actually timestamp the amount of time that synchronization messages spend in each device, which accounts for device latency.

Does PTP require special hardware?

Introduction. The Network Time Protocol (NTP) and Precision Time Protocol (PTP) are used to synchronize clocks in the Internet computing infrastructure. NTP requires no hardware provisions to capture timestamps other than a typical Unix timer interrupt or counter/timer motherboard chip.

What is difference between NTP and PTP?

This protocol is used to synchronize clocks of different types of devices. PTP was led by John Edison in 1588 for the standardization and was published in the year 2002….Difference between NTP and PTP :

What is Hybrid PTP?

In networks which include multicast operation all ports which subscribe to a multicast address receive all messages sent to that multicast address. …

Why P2P is not secure?

Peer-to-peer networks can be very dangerous from a security perspective. Usually you have to open one or more internet “ports” on your computer so that the P2P network can send files to and from your machine. The problem is that you basically cannot control what goes in and out of those ports once you open them.

What do you know about peer-to-peer network?

A peer-to-peer network is one in which two or more PCs share files and access to devices such as printers without requiring a separate server computer or server software. A P2P network can be an ad hoc connection—a couple of computers connected via a Universal Serial Bus to transfer files.