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Minimum bytes in IPv4 header?
Minimal bytes required in IPv4 header are 20 i.e. 20 bytes are mandatory. And total bytes in IPv4 header are 60.
Which IPv4 header field is responsible for defining the priority of the packet?
differentiated services
How much overhead would this be if IPv6 is tunnelled over IPv4?
When tunneling IPv6 over IPv4, the overhead primarily consists of the additional IPv4 header and any encapsulation overhead. An IPv4 header is typically 20 bytes, while an IPv6 header is 40 bytes. Thus, the total overhead for tunneling one IPv6 packet over IPv4 would be 20 bytes, resulting in a total packet size increase of 20 bytes for every IPv6 packet transmitted. This additional overhead may impact performance, especially in networks with high traffic or limited bandwidth.
Contrast the IPv4 and the IPv6 header fields?
Simplified header format. IPv6 has a fixed length header, which does not include most of the options an IPv4 header can include. Even though the IPv6 header contains two 128 bit addresses (source and destination IP address) the whole header has a fixed length of 40 bytes only. This allows for faster processing. Options are dealt with in extension headers, which are only inserted after the IPv6 header if needed. So for instance if a packet needs to be fragmented, the fragmentation header is inserted after the IPv6 header. The basic set of extension headers is defined in RFC 2460.
The source IP address for an IPv4 datagram is stored where in the header?
4th longword (bytes 13-16)
What is The header of an IPv4 packet does not include fields required for?
The header of an IP packet does not include fields required for reliable data delivery. There are no acknowledgments of packet delivery. There is no error control for data.
How can dns distinguish between ipv4 and ipv6 host in determining which resource record to return?
It reads the protocol/bit stream/header
The Protocol field used in IPV4 header is not present in the fixed IPV6 header Why not?
The Protocol field in the IPv4 header, which specifies the transport layer protocol used (like TCP or UDP), is not present in the fixed IPv6 header because IPv6 uses a more flexible approach with extension headers. Instead of a single Protocol field, IPv6 allows for multiple extension headers to be used, which can carry information about the transport protocol and other features. This design improves efficiency and scalability, enabling better handling of various protocols and options without cluttering the main header.
How many fields are there in IPv4 header?
UDP is a Transport layer protocol or fourth layer protocol. UDP is a connection less protocol used in transport layer. UDP header have four fields in total .
Which fields of the IPv4 header change from router to router and why they change?
IP address remains the same. Mac address changes from router to router.
How can we determine if an ipv4 packet is carrying an icmpv4 packet?
To determine if an IPv4 packet is carrying an ICMPv4 packet, you can examine the packet's protocol field in the IPv4 header. The protocol field specifies the type of payload the IPv4 packet carries, and for ICMPv4, this field is set to 1. Additionally, you can analyze the packet's structure; ICMPv4 packets have a specific format beginning with a type field that indicates the kind of ICMP message being transmitted.
When a tunnel mode is used a new outer ip header is constructed for both ipv4 and ipv6 indicate the relationship of each outer ip header field and each extension header in the outer packet to the corr?
i naw the answer but you dont answer my guestinq first my giestion i want to ask what is mean by outer plantes
