Questions tagged [internet]
For questions about interconnected networks.
285
questions
0
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0answers
9 views
Unable to determine where the exact issue is (ISP) [closed]
My ISP believes that the issue is at my end. My router connects to the fiberoptic modem that was provided by my ISP and the internet has stopped working and when I contact my ISP says that the issue ...
0
votes
0answers
10 views
How to share my laptop internet to router? [closed]
I have a Belkin router. Now the problem is that I don't have ISP connection but I have mobile internet and
through mobile hotspot I have connected my laptop with it.
Now I want to transfer this ...
0
votes
0answers
17 views
why is modem not needed for wireless Internet connection? [closed]
I have studied that Modem is needed to connect a computer/LAN to Internet through telephone line/cable. This is for modulation and demodulation of data - digital to analog and analog to digital.
I ...
0
votes
0answers
12 views
Double NAT issues? [closed]
I have minor networking experience (college stuff) and I'm not posting this looking for support to a problem, but rather am just wondering if there's validity to something I was told by a Verizon tech ...
0
votes
0answers
13 views
100 devices on virgin media cable broadband [closed]
Some simple questions for the experienced.
Assuming 100 devices are running the same application which requires 3Mbps and all devices are connected to the same internet connection of 512Mbps such as ...
0
votes
1answer
24 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 ...
0
votes
3answers
45 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 ...
0
votes
0answers
6 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 ...
0
votes
1answer
28 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 ...
0
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2answers
24 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
...
0
votes
1answer
17 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 ...
0
votes
1answer
14 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?
0
votes
2answers
24 views
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 ...
5
votes
2answers
110 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 ...
0
votes
1answer
44 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?
1
vote
2answers
156 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 ...
15
votes
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" ...
0
votes
1answer
51 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 ...
0
votes
1answer
24 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 ...
0
votes
1answer
36 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 ...
1
vote
1answer
101 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.
...
2
votes
2answers
108 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?
0
votes
2answers
89 views
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?
0
votes
1answer
39 views
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 ...
0
votes
1answer
74 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 ...
1
vote
0answers
20 views
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 ...
1
vote
2answers
53 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 ...
1
vote
2answers
262 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 ...
1
vote
1answer
58 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)?
0
votes
3answers
276 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, ...
0
votes
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 ...
0
votes
1answer
31 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 ...
1
vote
1answer
234 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 ...
0
votes
2answers
63 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 (...
0
votes
1answer
81 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 ...
0
votes
2answers
62 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/.
...
-1
votes
1answer
46 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 ...
0
votes
1answer
204 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 ...
2
votes
1answer
49 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 ...
-1
votes
1answer
54 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 ...
0
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0answers
99 views
Block internet on a Cisco catalyst 3560 port
Good day
Is there a way to block a specific port in a Cisco Catalyst 3560 switch to block the user from accessing the internet but still have full access to the internal corporate resources. The ...
7
votes
2answers
1k views
How do routers on the backbone avoid IP address conflicts?
As the title suggests, how do ISPs, and other networks connected to the backbone ensure that their host network address isn't already in use by another backbone node, as there is no controlling device ...
0
votes
1answer
64 views
Estimating bandwidth requirements and productivity gain from traffic data
My small office has a 30Mbit/s internet connection, on which two or three people work. We could get twice the bandwidth at a substantial cost.
I imagine a bandwidth upgrade would slightly improve ...
2
votes
2answers
443 views
What's the role of Default Gateway?
It acts as the "gateway" to the Internet,but also from what i have read,it's the last thing a packet would be sent to while trying to route (when checking the senders' route table).
Maybe it's the ...
22
votes
6answers
6k views
What stops someone from configuring their network with IP addresses they do not own?
Here's the scenario. I was picturing a university that bought a range of IP addresses. I think their network would still be connected to an ISP (right?), but they'd have freedom to configure stuff the ...
12
votes
8answers
7k views
Why are IP addresses given to each interface and not device? What would the implications of that be?
Why do we need to give IP addresses to each interface? Wouldn't giving one to each device be enough?
5
votes
1answer
203 views
Analyze Network Traffic by Autonomous System Number?
I'm looking for the way to take an estimate consumptions toward internet per Autonomous System Number which could help me to make a decision if it's necessary to establish a peering with this AS's ...
0
votes
1answer
344 views
In one organization having two ISP which configured on fortigate firewall ? How can we do the failover for internet?
Organisation don't have AS number .As of now we are doing manually route for any ISP at a time.
when default Internet link is go down that time making second link enable on firewall.
I saw the some ...
3
votes
3answers
118 views
How is traffic forwarded though IXPs if route servers do not forward any traffic
while i was studying about IXP route-servers, i read that they do not forward any traffic. I get that a route server is a "control plane" entity and it is used for easier bgp peering. However, i ...
0
votes
1answer
1k views
Download Internet Routing Table
What is the best way to download a snapshot of the Internet's IPv4 routing table? I need check if IP addresses are routable. It needs to function offline, so a looking glass server won't work. I know ...
