Which address is used as a destination address on multicast Ethernet frame?
The features of an Ethernet multicast frame are as follows: It has destination MAC address 01-00-5E when the encapsulated data is an IPv4 multicast packet and destination MAC address 33-33 when the encapsulated data is an IPv6 multicast packet.
Which address is multicast address?
The IP address that defines a multicast group is a Class D address (224.0. 0.0 to 239.255. 255.255). Multicast addresses cannot be used as source addresses for any traffic.
What are the 3 types of destination Ethernet addresses?
There are three types of Ethernet addresses:
- unicast addresses. Unicast addresses represent a single LAN interface.
- multicast addresses. Multicast addresses represent a group of devices in a LAN.
- broadcast addresses. Broadcast addresses represent all device on the LAN.
What address is used for Ethernet broadcast?
The address FF:FF:FF:FF:FF:FF is used for Ethernet broadcast traffic.
What are Ethernet addresses?
In a LAN, each node is assigned a physical address, also known as a MAC/Ethernet address. This address is unique to each of the nodes on the LAN and is 6 bytes (48 bits) long, which is burned on the Ethernet card (also known as the network interface card). Ethernet is a byte-count protocol.
What is destination address in Ethernet?
Ethernet addresses. Ethernet source and destination addresses are 6 byte patterns uniquely allocated to each hardware node or workstation. This is an important number as it is the only way hardware connected to a network can recognise other devices.
Which multicast MAC address is used on Ethernet networks?
Ethernet MAC Devices that belong to a multicast group are assigned a multicast group IP address. The range of IPv4 multicast addresses is 224.0. 0.0 to 239.255.
What is the purpose of a multicast Ethernet frame?
A multicast frame contains the unique multicast MAC address of an application, protocol, or data stream. Why is it important to be able to distinguish between the 3 types of Ethernet address type? In an Ethernet switch, each of the three are treated differently.
What is the difference between IP address and Ethernet address?
An IP address is just a pointer to a location on a network. Whether that be a local network, or the internet. When you say “ethernet address”, I’m assuming you refer to your IP address on your local area network. So your Ethernet IP is the address of your computer on your local network.
How many Ethernet addresses are there?
Unlike IPv4 addresses which are 32-bits long, the Ethernet MAC address is 48-bits in length and can provide a total of 281.5 trillion possible addresses.
What is Ethernet multicast?
Ethernet Protocol Multicast addresses allow a source device to send a packet to a group of devices. Devices that belong to a multicast group are assigned a multicast group IP address. The range of IPv4 multicast addresses is 224.0. 0.0 to 239.255.
Why do other IP multicast addresses map to the same Ethernet multicast address?
Because IP multicast groups are 28-bits long, the mapping cannot be one-to-one. Only the 23 least-significant bits of the IP multicast group are placed in the frame. The remaining five high-order bits are ignored, resulting in 32 different multicast groups being mapped to the same Ethernet address.
What is the broadcast address for Ethernet?
The Ethernet broadcast address is distinguished by having all of its bits set to 1. As such, its MAC address is the hexadecimal value of FF:FF:FF:FF:FF:FF. This address is used to transmit data to all of the hosts on the local subnet.
What destination address is 255.255 255.255 for?
limited broadcast address
255.255. 255.255 (limited broadcast address) means all hosts on current physical network; any address with host number of all (binary) 1’s (directed broadcast address) means all hosts on current network (including hosts on other IP subnets).
Is Ethernet IP the same as TCP IP?
Ethernet is a layer 2 data link protocol that is widely used with the TCP/IP protocol, which resides at layers 3 and 4. To understand network communications, it is essential to learn about the protocol layers (see OSI model).
How do I change my multicast IP address to an Ethernet multicast address?
The mapping from an IPv4 multicast address to a 48-bit MAC multicast address is pretty simple. Just take the 48-bit MAC multicast OUI of 01-00-5E , append a zero bit, and append the low-order 23 bits of the IPv4 multicast address. That creates the 48-bit MAC multicast address from an IPv4 multicast address.
What protocol is used by Ethernet?
In order to manage collisions Ethernet uses a protocol called Carrier Sense Multiple Access/Collision Detection (CSMA/CD). CSMA/CD is a type of contention protocol that defines how to respond when a collision is detected, or when two devices attempt to transmit packages simultaneously.