Questions tagged [rfc]
For questions about or involving Request for Comments (RFC), where it is a type of publication from the Internet Engineering Task Force (IETF) and the Internet Society (ISOC), the principal technical development and standardisations for the Internet. For instance, you want to know what a specific RFC means or how you interpret it.
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Auto-configuring Global Unicast address with prefixed other than 64-bits len
Experiments run on Ubuntu 22.04 and Debian 12.
I'm new to network and trying to understand if the behavior mandated by an RFC or the actual implementation: Prefixes with lengths other than 64 bits are ...
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Wireshark BGP Decoding
I have a question about how Wireshark decode MP_REACH_NLRI BGP-attribute witj AFI = 1 and SAFI = 128. On the screenshot prefix length is 118 bits. We have 24 bits for one MPLS label and 64 bits for ...
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RFC of the Postal Analogy
Is there an informational RFC which describes the Postal Analogy used to explain layered reference models of network protocols?
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What standard defines EUI-64?
I'm trying to understand why does creating modified EUI-64 format interface identifiers from IEEE 802 48-bit MACs incorrectly use 0xFFFE and why should've it used 0xFFFF.
I belive there should be a ...
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What RFC standards That describe how network headers work at the bit level [duplicate]
I want to understand more deeply how network headers are constructed at the bit level based on byte ordering, but what standard RFC number explains this?
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Understanding IPv4 model of operation
I'm new to networking and reading RFC791 about IP protocol specification and got some question regarding the paragraph 2.2 Model of Operation. Here is what is discribed:
The internet module prepares a ...
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RFC 1918 nonsensical sentence
I am doing an intern and now under a training. The instructor suggested us of reading the RFCs involved with the topics covered in class.
In RFC 1918, they say "An enterprise that decides to use ...
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How does the client verify its own SYN? [duplicate]
The TCP rfc 9293 says this:
A 3WHS is necessary because sequence numbers are not tied to a global
clock in the network, and TCP implementations may have different
mechanisms for picking the ISNs. The ...
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Are the IP protocols contained in the Protocol Field in IPv4 header, chronologically assigned by date of creation?
when looking at this list here https://en.wikipedia.org/wiki/List_of_IP_protocol_numbers
I see IPv6 was given #41, or 0x29.
But there are many protocols after #41. Are these other protocols assigned ...
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Do NAT Gateways Need to be the First Address of the Network?
NAT gateways are often given the first usable address in an address space.
Do any protocol specs require this? Or is this just a convention?
I skimmed RFC 1918 and RFC 2663 but didn't see anything ...
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RFC Packet Diagrams Full List of Rules
I'm reading RFC 7798, and I'm having trouble understanding the notation on some packet diagrams, such as figure 5,6 from 4.4.2, and figure 2 from 4.1, so far. To be specific, it is the ' : ' from the ...
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What does the OSPF RFC mean when it says "The master sends the first Database Description Packet"? [duplicate]
I'm trying to reconcile what I've read about the OSPF Master/Slave process, with what the RFC says, with what I'm seeing on the wire.
Everything I've read implies the Master starts the LSA exchange by ...
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Where are 0 TCP/UDP ports banned?
It is well-known that, on most systems, using 0 for the UDP destination port or for the TCP source or destination ports is disallowed. Is this required by RFCs, or is this just common practice? If it'...
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Difficulty in understanding the concept of "artificial inflate" and "deflate" in the fast recovery phase of TCP
I was going through the text Computer Networking- A Top-Down Approach by Kurose and Ross, there I found subtleties with the TCP congestion control FSM which is shown below:
Mainly I am having ...
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Why do we need private IP address range?
When it comes to local networks, you have the freedom to use any IP address you want for your network since it doesn't need to communicate on the internet with other devices. However, the RFC ...
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