How many header fields are in IPv6?
8 fields
The IPv6 header is more streamlined: it contains 8 fields, compared to IPv4’s 14 fields. version: 4 bits long, and corresponds to IPv4’s field of the same name. It indicates the receiver the IP version to expect. In case of IPv6 that is of course 6, making this field’s binary value 0110.
What is the size of traffic class field in IPv6 header?
8-bits
Traffic Class (8-bits): The Traffic Class field indicates class or priority of IPv6 packet which is similar to Service Field in IPv4 packet. It helps routers to handle the traffic based on the priority of the packet.
How many bytes are there in the payload length of a IPv6 header?
Payload Length The Payload Length field indicates the length of the IPv6 payload. The size of this field is 16 bits. The Payload Length field includes the extension headers and the upper-layer PDU. With 16 bits, an IPv6 payload of up to 65,535 bytes can be indicated.
What is flow in IPv6?
In IPv6 terms, a flow is defined as a sequence of packets sent from a particular source to a particular (unicast or multicast) destination for which the source desires special handling by the intervening routers.
What is the first field in an IPv6 header?
Source address
Source address (128 bits) The 128-bit source address field contains the IPv6 address of the originating node of the packet. It is the address of the originator of the IPv6 packet.
How many bytes does a source address have in an IPv6 header?
Comparing the IPv4 and IPv6 Headers
| IPv4 Header Field | IPv6 Header Field |
|---|---|
| Internet Header Length | Removed in IPv6. IPv6 does not include a Header Length field because the IPv6 header is always a fixed size of 40 bytes. Each extension header is either a fixed size or indicates its own size. |
How many bytes is IPv6 address?
16 bytes
The IPv6 address is 128 bits (16 bytes).
How do you calculate payload length?
To find the payload length you must, just as an IP stack would:
- determine the length of the IP header (likely 20, but it can have options) by multiplying the low order nibble of the first byte by 4.
- Determine the embedded protocol header based on the value of the 9th byte in the IP header.
How many bits are in the reserved field of the routing header?
5. Header length field(4 bits): This field indicates the size of the TCP header but in a scaled-down version. 6. Reserved bits(6 bits): The bits of this field are set to zero.