Questions tagged [terminology]

For questions that are primarily about words / abbreviations specific to networking or network engineering. Do not use this tag as a catch-all for other questions.

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What is the name of the syntax for the "configure" interface?

When accessing routers/switches via ssh cli, I'm familiar with configure syntax but have never bothered to ask "what is it called?" As you might imagine, searches for router configure ...
Josh Hibschman's user avatar
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1 answer
483 views

What Is The Difference Between OSPF Neighbors And Directly Connected Routers?

I have read somewhere that: OSPF router’s neighbors are usually the routers directly connected to it through its interfaces, from a layer-3 perspective. However, there are some exceptions, such as ...
Shadi's user avatar
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What does 'CPE' stand for, and what is it?

In reading up on NextDNS, I came across the add-cpe-id option to dnsmasq: --add-cpe-id= Add an arbitrary identifying string to DNS queries which are forwarded upstream. NextDNS uses this for your '...
OJFord's user avatar
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Can SneakerNet Consider As Network?

As the title of the question, is that sneakernet can consider as a network? Or a network is the devices must be connected via cable or wireless?
Wei's user avatar
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2 votes
3 answers
290 views

Is it called the "MAC" protocol or the "Ethernet" protocol?

I know that there are protocols called the TCP protocol and the UDP protocol and the IP protocol, but what is the protocol at the data link layer in Ethernet called? is it called the "MAC" ...
user84938's user avatar
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1 answer
180 views

ISR 4331 vs ISR 4331/K9?

We have cisco router. On its box/package ISR 4331/K9 is written. I am watching a youtube video at below link, its title has word ISR 4331 https://www.youtube.com/watch?v=bk-4jkb6Cwo&list=...
DSP_CS's user avatar
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3 answers
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Terminology: Disentangling the word 'Ethernet'

I’m trying to disentangle the common usage of the word “Ethernet” I believe when people say 'Ethernet' they refers to 2 thing simultaneously: a Protocol a Transmission Line That is when someone says:...
user13764383's user avatar
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1 answer
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What is a child tunnel? [closed]

I only heard this term today, but it was explained to me as a point-to-point VPN (so, two routers with a VPN tunnel established between them) and a firewall configured to only allow certain hosts to ...
leeand00's user avatar
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2 answers
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How is the term "fabric" defined in networking?

I know this is fundamental and I can find out in Google but so many people differ themselves when they talk about network "fabric". Kindly elaborate on this ?
user64956's user avatar
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1 answer
261 views

What is underlay and overlay network?

Curios to know about underlay and overlay networks and differences between them.
user64956's user avatar
1 vote
2 answers
163 views

Can TCP stand for "Transport Control Protocol"

I know it might sound like a silly question, but afaik TCP stands for transmission control protocol. However I found a couple of websites using the term Transport Control Protocol. So I was wondering ...
user206904's user avatar
6 votes
3 answers
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Is an ONT a modem? [closed]

I was helping a friend set up a simple home network after a move recently. He referred to his ONT as a modem, and I was tempted to say "well, actually, that's not a modem..." I didn't, because I ...
Cody's user avatar
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Are LAPD reliability and flow-control messages (e.g. RR and RNR) considered to be data-plane or control-plane messages?

Ethernet, IPv4, IPv6, MPLS are all examples of datagram networks where each frame or packet is forwarded in a mostly stateless manner, independent of earlier and later packets. In such networks the ...
Bruno Rijsman's user avatar
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1 answer
5k views

What are the Rx Mini and Rx Jumbo rings? [closed]

Reading through the ethtool man page, I found the following: -G --set-ring Changes the rx/tx ring parameters of the specified network device. rx N Changes the number of ring ...
Wildcard's user avatar
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1 answer
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bind to specific address

What does bind to address 192.168.1.4 mean? I have come to know that if an application bind to 0.0.0.0 then it means listen on all interface but it doesn't make much sense to me. Can someone explain ...
rooni's user avatar
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3 answers
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Correct term for networks created for virtual machines and containers?

What is the correct term for the type of network created for virtual machines and for containers. For illustration a Linux virtual host might have devices docker0 as 02:42:a6:79:a6:bc with address 172....
Tim's user avatar
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1 vote
1 answer
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What is difference between "topology of network" and "geometry of network"?

In the Internet some times, we hear of the term "geometry of the network": https://bit.ly/2VqI2YO Is there any difference between the term of "geometry of the network" and "topology of the network"? ...
Questioner's user avatar
2 votes
1 answer
287 views

What's the term for throughput including all Ethernet overhead?

If I understood correctly "goodput" applies to application data rate (i.e 1460 byte packets) while "throughput" also includes all protocol headers (1514 byte packets). What term should be used for ...
StackedCrooked's user avatar
0 votes
1 answer
75 views

What is a "circuit"

I see in DCIM softwares (phpipam, netbox) circuit modules. What would you reference in these modules ? what is the scope. IP transit links ? fibers to peers ? fiber between datacenters ? fiber ...
exeral's user avatar
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2 votes
4 answers
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What is a standard term that includes patch panels but is broader?

I work in network infrastructure documentation at a public university. In discussions with coworkers, I frequently need to refer to devices that connect cables end-to-end. These devices are usually ...
Daniel O's user avatar
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2 answers
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Networking: what is the difference between access network and core network [closed]

What is the difference between access network, transport network and core network? What is an access network aggregation network and what is a core network l?
Mehul Dangar's user avatar
3 votes
2 answers
175 views

Why is ARQ (Automatic Repeat reQuest) named so?

I can't make sense of a naming for Automatic Repeat reQuest. The idea is that ARQ is a method for transmitting data without negative ACKs, so standard ARQ flow is: Sender sends a packet If sender ...
Evgenia Karunus's user avatar
1 vote
2 answers
810 views

What does minimizing maximum link utilization mean?

I was reading a networking material and it mentions that for optimizing a network, for congestion control and QoS, we need to minimizing maximum link utilization. I don't understand what does this ...
Corey's user avatar
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2 votes
2 answers
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Why don't we calculate time for a packet to get OUT of the wire?

When calculating the end-to-end delay, Transmission Delay is the time need to pump / put the bits onto the wire. Why isn't it the case that end-to-end delay also include the time need to get the bits ...
krismath's user avatar
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1 answer
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What's meant by AUI & MAU in ethernet networking?

The questions is so clear, what's meant by AUI (Attachment unit interface ) & MAU (Medium attachment unit) in the scope of Ethernet ? Background : I've recently started to work as software ...
Shady Atef's user avatar
1 vote
1 answer
45 views

Terminology of addresses [closed]

I was curious about the views of the many very experienced network people here on the use of "IP" for "IP address". Obviously it follows the very common English mechanism where ...
jonathanjo's user avatar
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What are "Unicast identity tokens"?

I was reading an introduction to IPv6 which talks about the depletion of IPv4 addresses. I came across the following line: As noted in RFC 5735 a number of address blocks are reserved for users ...
Gloomy's user avatar
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1 answer
1k views

What is the meaning of the CS and EE abbreviations in these sentences?

They are from Tanenbaum network book: In CS: Bandwidth is the capacity of the media in bits/sec In EE: Bandwidth is the width of the frequency band, measured in Hz
taco7's user avatar
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1 vote
1 answer
592 views

What is the meaning of the word 'band' in the following terms: broadband, baseband and bandwidth?

I am interested in the terminology of the following words: baseband, broadband and bandwidth applied in tellecomunications. What is the meaning of the words, how were they formed and what do they mean ...
yoyo_fun's user avatar
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1 vote
1 answer
199 views

In the MAC acronym what do the words Media, Access and Control refer to independently?

I am not a native English speaker and I know what MAC addresses are and how are they used in networks. However what I do not understand is where this words came from independently. What does Media ...
yoyo_fun's user avatar
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14 votes
2 answers
4k views

What does the naming convention for Ethernet standards mean: 1000BASE-T, BASE-TX, BASE-SX, etc.? What is the meaning of the components of the name?

I understand the number in the naming convention. The number represents how many Megabits per second can the standard support. However, I do not understand the rest of the naming convention. What do "...
yoyo_fun's user avatar
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4 votes
1 answer
1k views

Can a network bridge be viewed as a two port switch?

I never worked with bridges because they were no longer used when I first got internet at home, and I have some troubles understanding what exactly was the role of the switches. From my search I ...
yoyo_fun's user avatar
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2 votes
2 answers
140 views

Why in STP is the switch that is the "center" of the network is called the "Root Bridge," not "Root Switch"?

I am interested in the terminology of the term "root bridge." Why was this word chosen instead of the word switch, which would have been more intuitive?
yoyo_fun's user avatar
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1 vote
2 answers
3k views

What is the difference between a PHY chip in a switch and a switch controller ASIC in the switch?

I am analyzing the block diagram of a switch and I would like to know more about the difference between PHY chip and ASIC (which I think is also called Switch controller). What is the JOB of each ...
yoyo_fun's user avatar
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1 vote
1 answer
118 views

What does the adjective 'logical' mean in logical- addressing, connection, topology etc?

I get somewhat confused when I come across the adjective 'logical'. Some contexts I come across them: logical addressing, logical connection, logical topology, logical network etc. Is it just as ...
user1534664's user avatar
2 votes
1 answer
497 views

What does "end site" mean?

I see that many IETF RFC documents use "end site" term. However I cannot find exact definition of an "end site". Does anybody have a reasonable explanation of what is an "end site"? In particular I ...
Maksym Bondarenko's user avatar
1 vote
1 answer
402 views

Reverse Received Signal Strength Indicator (RSSI)

I am wondering what the Reverse Received Signal Strength Indicator (RSSI) is. I came across the term in the BEEKS Beacon's datasheet, under the heading "Bluvision BLE Stack Specification".
Undertherainbow's user avatar
5 votes
3 answers
11k views

What's the difference between Frame, Packet and Payload?

So what exactly is the difference between Frame, Packet and Payload? I've seen people use these terms interchangeably but what is the actual difference?
radiantshaw's user avatar
2 votes
2 answers
3k views

Terminology - What pod means?

I read some papers with the term pod. Specially "pod switches". What pod means? This is an acronym? To what?
eightShirt's user avatar
0 votes
4 answers
1k views

What is the security purpose of a bridge? [closed]

Linux bridges operate at layer 2 and therefore can only switch packets between interfaces whose mac addresses are contained in a single bridge; a full router operates at layer 3, and thus allows ...
leeand00's user avatar
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1 vote
1 answer
5k views

what is the industry standard meaning of "flat network"

I have typically known 'flat network' to be a non-vlan network, typically a single /24. We have a new hire (security analyst) at my company and he asked the desktop support supervisor if he had "...
Rex Sheffield's user avatar
3 votes
1 answer
2k views

Significance of Bisection Bandwidth, Full Bisection Bandwidth, Subscription and their differences

I am confused by the terms Bisection Bandwidth, Full Bisection Bandwidth, and (Over/Under)-subscription. How do they all relate to one another in Data centres and in the general sense? I believe ...
Abhishek Balaji R's user avatar
3 votes
2 answers
604 views

What do I call the first IP of the block?

TL;DR Given 8.8.8.8, what do I call its 8.8.8.0 or 8.8.8.1? Why do I need this information? I'm working on a program that resolves the location of IP addresses. To reduce the number of API requests ...
ᴍᴇʜᴏᴠ's user avatar
11 votes
3 answers
699 views

What is the proper name for hexadecimal like standard notation of an IPv6 address?

RFCs such as 5952 - "A Recommendation for IPv6 Address Text Representation" and 2373 - "IP Version 6 Addressing Architecture" each outline the commonly used hexadecimal and colon ...
rheone's user avatar
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4 votes
3 answers
25k views

Is host name and server name the same thing?

I have seen the use of both terms. Are they the same thing or are there any differences between them? I have seen the use of "server name" on this Wikipedia page and on this Yahoo Answers page.
Utku's user avatar
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2 votes
1 answer
78 views

Are the channels mentioned here physical or logical in duplex and multiplex?

https://en.wikipedia.org/wiki/Duplex_(telecommunications) In a half-duplex system, there are still two clearly defined paths/channels, and each party can communicate with the other but not ...
Tim's user avatar
  • 1,545
1 vote
3 answers
293 views

Does connectionless mean the same as multiplexing?

The concepts of connection-oriented and connectionless and the concept of multiplexing come to me in different chapters in Tanebaum's Computer Networks. But after some thoughts, I feel that ...
Tim's user avatar
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2 votes
2 answers
785 views

What are endpoints in the data link layer, physical layer and application layer called?

From Tanebaum's Computer Network: When an application (e.g., a user) process wishes to set up a connection to a remote application process, it must specify which one to connect to. (Con- ...
Tim's user avatar
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3 votes
1 answer
301 views

Is datacenter a lan?

A datacenter can contains thousands of machines. At very high level is it just a LAN and private network with thousands of machines on them. Is datacenter a LAN ? or is it WAN ? Is datacenter a ...
JavaDeveloper's user avatar
0 votes
1 answer
166 views

Exclusive responsibility of a DCE

I've read a lot of definitions of DCE and DTE and I'd want to know if data transmission if exclusive responsibility of a DCE.
sebelk's user avatar
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