How is Interpacket gap calculated?
packet + min. gap = 1203.2 nS + 9.6 nS min. gap (12 byte 100% load) = 1212.6 nS (packet + min. gap)
What is interframe gap time?
The interframe gap is a 96 bit time delay provided between frame transmissions to allow the network interfaces and other components some recovery time between frames. Too small a gap between frames can overrun the frame reception rate of network interfaces, leading to lost frames.
How do you calculate maximum packets per second?
Figure 1: ‘Space’ Occupied by the smallest packet Then we can calculate how many packets per second need to be processed if the port is to transmit at wire speed: PPS = (bytes/s) / (84 bytes/packet) = 1,488,095 pps.
How do you calculate packet efficiency?
The amount of data retransmitted per flowthe network traffic between network objects is used to calculate the Network Efficiency metric.
- Efficiency = 100% * (transferred – retransmitted) / transferred.
- Network Loss = 100 – Efficiency.
What are the standard data rates for Ethernet?
A standard Ethernet network can transmit data at a rate up to 10 Megabits per second (10 Mbps). Other LAN types include Token Ring, Fast Ethernet, Gigabit Ethernet, 10 Gigabit Ethernet, Fiber Distributed Data Interface (FDDI), Asynchronous Transfer Mode (ATM) and LocalTalk.
What is the maximum size of an Ethernet frame?
to 1518 bytes
The largest possible payload in a frame is called the Maximum Transmission Unit (MTU). The original IEEE 802.3 specifications (Reference 2) defined a valid Ethernet frame size from 64 to 1518 bytes.
How do you calculate packet size?
You will need to calculate this size yourself. The IP header has a ‘Total Length’ field that gives you the length of the entire IP packet in bytes. If you subtract the number of 32-bit words that make up the header (given by the Header Length field in the IP header) you will know the size of the TCP packet.
How is packet rate calculated?
Let’s calculate the maximum number of 64 byte packets that can be theoretically sent over a 1 Gbps link:
- Link speed in bits/sec = 1*1000*1000*1000 (say A)
- Packet size in bits including (Preamble+ SFD+ IFG) overheads = (64+20)*8 (say B) [Multiply by 8 is for 8 bits/byte]
What is packet efficiency?
As the packets get larger, the efficiency gets better. If you have 95 bytes to transmit in the payload, you’re up to 95% efficiency for that particular packet. But the real “bandwidth efficiency” here comes from the ability to share bandwidth among multiple data sessions.
