Questions tagged [internet]

For questions about interconnected networks.

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Why is my download speed so low although speed tests show other results? [closed]

I try to download a bigger file (2.4 GB) but the download speed is just about 200kbit/s although every internet speed tests I do show that I have a download rate of about 42mbit/s? I also noticed that ...
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23 views

Simple chat program between machines in 2 countries [closed]

I want to get a practical experience in Networking (I have read the basic theory), hence I decided to establish communication between 2 hosts (in different countries) connected to the Internet. This ...
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2answers
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2 AS in the same box JunOS

Today we have an MX204 and we announced our AS using Juniper, but we also have partnership with another internet provider that has another AS. This other AS has much less client and a much smaller ...
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6 views

Why does my WiFi tab always missing in network and internet? [closed]

Where is my WiFi tab under Network&Internet? The picture It always missing whenever i connect to wifi. Here is the picture Before i use my internet . The Wi-fi tab is present. Im using ACER ASPIRE ...
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7 views

Does all 802.11ax routers include MU-MIMO? [closed]

I'm trying to buy a new router and had a question that I couldn't find anywhere else. Do all 802.11ax routers come with MU-MIMO? How can I tell if a router supports MU-MIMO?
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3answers
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Why is the Internet not hierarchically addressed? [duplicate]

IANA is recognized as an authority on global IP address allocation. See Wikipedia, or ietf.org, IANAs website, or Google it. They state that "both IPv4 and IPv6 addresses are generally assigned ...
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3answers
65 views

Routing with private addresses

Let's say that we have a private network, with private addresses and a NAT enabled router at the end. If the router is misconfigured and routes traffic to the global internet, keeping as source ...
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2answers
51 views

What role is ARP playing for a internet request?

For me it is not clear how the internet is working. Let's say we have host (local IP:192.168.12) and the gateway/router (local IP: 192.168.0.1 / extern IP: 62.1.2.134) Now the client (192.168.0.12) ...
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385 views

Is not 192.168.88.1 (192.168.*.*) always an “internal” IP address?

I had some headache with a proxy setup which I couldn't figure out. Turns out that only "127.0.0.1" and "localhost" were recognized as "localhost" or "internal" ...
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2answers
38 views

What is an acceptable loss with external networks? [closed]

Based on my reading here, any traffic loss on the internal network should be quickly addressed. However what is an acceptable level of loss one can expect when communicating with external networks? ...
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1answer
20 views

Why does SONET need atomic clock but T-carrier does not?

SONET and T-carrier are both synchronous TDM. But T-carrier does not use atomic clock. Why does SONET? Is it because SONET does not use buffer? But how does it prevent bit loss if there is no ...
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1answer
60 views

Why is the IPv6 address I'm getting from whatismyipaddress.com wrong? [duplicate]

So I've portforwarded my machine using the graphical interface provided by my router. This interface also gives me a public IPv6 which I can use to communicate with my machine through the internet. ...
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1answer
84 views

Vxlan with internet access - possible because of high MTU?

So i was wondering, because VXlan requeres a high mtu to work properly (some set it even as high as the max configurable MTU (9000ish)), how would providing internet access for these nodes/servers ...
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How to find which protocol is used by lower layers? [duplicate]

When we type https://stackoverflow.com/ all the data which is sent to this server would be using HTTPS protocol in transport level So is it possible for me to know which error detection, flow control ...
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23 views

Real world IP routing on the Internet [duplicate]

I used to think the Internet looks like a tree, with some extra edges for redundancy. And that the subnets are getting shorter and shorter as you go up towards the backbones, the roots of the "...
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1answer
84 views

Automatic backup internet connection, is it possible? [closed]

I am trying by best to understand this topic. Apologies if this isn't the correct format or if it's lacking required information, I am little more than a home user. If someone could help point me in ...
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3answers
70 views

What is the relationship between an ISP and an AS?

Can one AS unite several ISPs, can/does an ISP own several ASes? No matter what I read nobody really clarifies this relationship or at least doesn't writes it down. Or is ISP and AS just a synonym? Is ...
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8 views

difference between Local Internet Breakout and regional internet breakout? [duplicate]

I searched over the internet but could not find the answer so i want any one of you to help me out in this. i don't know whats the difference between both of the terms and which is more preferable or ...
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1answer
38 views

filling routing table with next hop addresses

in a multi hop network when the packet leaves the source is it loaded with all the ips of the stops on its journey, then at each hop it checks the bitmask with the nodes routing table to see if this ...
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2answers
25 views

Speed comparison between agregated and non agregated internet

I have an offer for internet connection, where they offer me these speeds for a symetric and non aggregated connections over fiber optics (upload/download): 10/10 Mbit/s 20/20 Mbit/s 30/30 Mbit/s ...
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1answer
23 views

Peer-to-Peer (P2P) Networking Decentralization [closed]

How does P2P networking locate peers in the network if there is no centralized point to look up IP addresses of the individual computers in the network. Assuming there was no domain to use to do an ...
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1answer
15 views

Why can I forward email without mx record set up properly? [closed]

Say I have a domain domain.com I do not set anything on mx record in domain.com Yet I can set a forwarder from say hello@domain.com to another email. I set a address. Is this normal?
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2answers
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How could I build a Inner-Net of multiple networks?

I have multiple theoretical(not at the time being) WiFi Networks with one on each property(3 properties) and I want to have the three networks connected similarly to the internet. For example, I would ...
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2answers
176 views

Can you become your own ISP?

How exactly does an ISP connect you to the vast network of computers which is the internet? In my area there are several ISP's. For example. Bell, Rogers, and Cogeco all connect you to the "same ...
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1answer
48 views

Does Internet Stream Protocol (IP version 5) work on the Internet?

IP with version number 5 is dedicated to the Internet Stream Protocol. Can you send such a packet on the internet at large, or will it be blocked/discarded?
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2answers
557 views

Cisco nexus CRC error on interface

I have dual stack vPC setup between 4 cisco nexus switch as per above design. I have noticed recently that getting CRC error on cisco 3064 all 4 interface connected to N9K, and during peak traffic ...
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3answers
2k views

Is it possible to specify a route for a packet to take?

So, AFAIK, packets "hop" between routers. Packets are forwarded via a router's default path until it gets to destination IP. So is it possible to specify a specific set of routers this packet "hops" ...
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1answer
59 views

Are the submarine cables used only for internet?

We can see that almost all of the servers are interconnected between each others using submarine cables which ends in a complete hierarchy but question is are those internet connected cables are used ...
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1answer
69 views

Secure MPLS configuration: Does TCP port 646 (LDP) need to be generally exposed?

I am looking for expertise on MPLS configurations and security. A recent Nmap scan of my organization's public IPv4 perimeter networks has discovered a system which appears to be listening on TCP port ...
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1answer
39 views

Reccomended set up for wifi in dense apartment block?

I live in an apartment block of 87 units & one thing most people in it complain about is the poor cellular data reception. I have an idea of installing a fast wifi internet connection ...
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1answer
161 views

Confusion about TCP/IP data flow in layers

I'm confused about how the data flows through the layers of the TCP/IP model, so I'll just tell what I think it happens (using an email example) and I'd appreciate if you can point my mistakes. ...
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2answers
112 views

Is the Internet essentially a network of routers?

Is the Internet nothing but a globally scattered interconnected routers, and that the connections between them could be via any of Leased Line, X.25, Frame Relay, ATM, MPLS, or Ethernet?
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How are X.25/Frame Relay/ATM/MPLS related to PSTN?

Do X.25/Frame Relay/ATM/MPLS have their own isolated physical infrastructure? Or are they technologies invented to utilize the then existing infrastructure of the PSTN?
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1answer
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Is there any decentralized network of any kind in actual use? [duplicate]

I've spent a lot of time trying everything I've ever found which is decentralized. Every single such network has always been a ghost town; a complete waste of time, pointless to attempt to use with ...
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1answer
131 views

Losing connectivity after creating a VLAN other than the default VLAN

I have a 192.168.0.0/24 network that serves three computers. There are no issues with this part of the existing network. I have purchased a new Cisco SG350-28P 28-Port Gigabit PoE Managed Switch. I ...
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0answers
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How can I block the Internet and mobile data fallback? [closed]

Hoping to block outgoing WAN access from my network during certain periods as well as stopping mobile devices from auto-failing-over to their mobile data. Of course this won't be perfect since devices ...
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2answers
70 views

Modems involved in dial-up connection

I am currently studying the textbook Computer Networking -- A Top-Down Approach (7th Edition) by Kurose and Ross. In a chapter on Home Access: DSL, Cable, FTTH, Dial-Up, and Satellite, the authors ...
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2answers
399 views

Internet Scale Routing Table Size

In the link below, it is said that there are near one million prefixes for IPv4. https://bgp.he.net/report/netstats I want to know that it is a must for ISP routers to cache all these million IPv4 ...
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1answer
73 views

Why is XGMII little endian while the network is in big endian?

Why is XGMII little endian while the network byte order is big endian (RFC1700)?
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3answers
557 views

which is faster and why: One big file or split the big file into chunks, then transfer it over the Internet

Let's say I have a file that's 10GB and I want to transfer it over the Internet. Will it be best and fastest if I split the file into many smaller files and send it, then reassemble it after transfer, ...
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2answers
63 views

WiMax technology

Does WiMax technology is used by an ISP for providing cellular internet services? Are WiMax technology different from cellular technology for providing internet? Please mention the difference if ...
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1answer
34 views

Pros and cons of the idea of parallell data transmission

I am learning the basics of internet protocols and related principles. I recently performed experiments comparing UDP and TCP. But when I did that (using the ttcp program) it was only one process and ...
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1answer
328 views

Ho to implement RPKI for our Network

I would want to implement RPKI in my network. I have gone through some documents by which i cant understand the implementation process. What are the steps i should follow to implement RPKI in my ...
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3answers
99 views

Using 2 different ISP In case one dies

It's my first ever post in here and I hope not the last. I'm looking for some advice. I'm trying to reduce my internet downtime for a local network. My setup. Mix and match computer environment (...
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1answer
83 views

Why Internet protocol is divided in rows?

In simple words, why IP packet is divided in rows each one is 32 bit in length? For example this attached image shows the IP packet has 32 bit in the first row then another 32 bit and so on. Is it ...
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2answers
73 views

How fast DNS Propagation can practically be? [closed]

I've found via web search how info (i.e. DNS name-IP number pairing) is updated on authoritative DNS servers: https://www.freecodecamp.org/news/understanding-the-domain-name-servers-46c6bcf9afa3/. ...
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1answer
47 views

How cellular networks gets internet? [closed]

Mobiles get internet but how? From the towers, we used to get signals and communicate with others like calling or a message but coming to the internet how in the terms of networking terms like radio ...
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2answers
382 views

What happens if we try to access an IP Address that does no exist

Beginner Question: I just read an article talking about how the internet works and how routers make sure that packets arrive at the destination. However there is one thing that is not explained ...
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1answer
65 views

Bonding and switching between 2 different Links/WANs/Interfaces

Before I ask anything, I'd like to say that I pretty much searched a lot (to what I know of from keywords and terms such as "bonding" "wans" "links" "failover" "aggregate") and I couldn't find any up ...
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1answer
59 views

MAc address or IP address? which one gets used from my pc to router? [duplicate]

Question 1) which one is used nowadays? NAT or PAT? Question 2) as I knew, when my pc requests some website, what happens is , the data(packets) from my pc go to router. then router makes the request ...

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