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Questions tagged [network]

For questions about Networking that includes design, and use of a network, the physical cabling, hub, bridge, switch, router, and so forth. Anything in relation to networking and its technologies.

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Explanation of traceroute

Can anyone help me to explain the results of this traceroute. Why on hop 2 will latency suddenly increase? and decreases at hop 3 and will rise significantly to hop to 8.
bagzz's user avatar
  • 23
2 votes
1 answer
233 views

What is decentralized internet?

I have to do a college project on decentralized internet. I have tried searching on google and Wikipedia but not found any proper article (not "properly explained" to me at least). Can anyone give me ...
Ahashan Alam Sojib's user avatar
7 votes
3 answers
6k views

Is there any reason to use a hub over a switch?

Given that hubs are essentially the same as switches, as far as I know, except they share bandwidth between all connected devices, while switches do not, resulting in faster connections. I am simply ...
Ashtin Blanchard's user avatar
3 votes
2 answers
259 views

Why traceroute is still Used?

currenty I'm reading an article about 'Paris traceroute' , as i understood The Classical Traceroute give inexact information about the path that a packet traverse , 'incorrect links , missed nodes '....
jean jack's user avatar
2 votes
2 answers
610 views

Does the same IP cause IP conflict if one is from /22 other is from /24?

I have two hosts. They both have the same IP/subnet, ex.: 1.2.3.4/24 on both. I know this is bad, since there will be duplicate IP in the network. OK. But: If I have different (?) ranges: 1.2.3.4/...
Hessnov's user avatar
  • 121
1 vote
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
  • 27
38 votes
3 answers
21k views

Why does the IPv6 header not include a checksum?

It is stated in Wikipedia that an IPv6 header does not include a checksum. What are the reasons that were behind this decision?
Paulo Tomé's user avatar
23 votes
6 answers
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 ...
Tiago Oliveira's user avatar
22 votes
3 answers
30k views

Difference between router and gateway

What is the exact difference between router and gateway? In Network configuration we set the default gateway IP address, but in reality we call the device configured with that IP address as router?
Raja's user avatar
  • 355
20 votes
9 answers
15k 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?
Tiago Oliveira's user avatar
16 votes
2 answers
10k views

Network Gateways vs Interfaces

When looking at the contents of a routing table section on the Wikipedia article on Routing Tables, it contains a table as an example of a routing table with two headings which have an unclear ...
Alex W's user avatar
  • 273
8 votes
7 answers
4k views

How LAN works in video games if only one station is permitted to transmit?

I've read the in a LAN the data is transmitted in packets so as to allow only one station to transmit at a given time, so how could this be applied in video games LAN parties if only one device is ...
eis3nheim's user avatar
7 votes
3 answers
2k views

Fiber between two sites - no signal lights

We need to have fiber connection between two sites (distance less than 300 meters from each other). Currently there is multi-mode fiber connected to old switches working nicely. Now we are updating ...
lingo's user avatar
  • 71
7 votes
2 answers
4k views

The best way to understand Vlans?

Every time i try reading about the configuration of a device and adding it to the network, i always face a problem. The problem is basically am not able to understand Vlan's, and how for example some ...
Saif Ahmed Yassen's user avatar
4 votes
1 answer
199 views

GNS3 switches vs Real switches performance

I want to emulate the performance of switches in GNS3, and the focus is not the configuration of switches. My questions are: Do emulated switches perform worst than actual switches? Are emulated ...
Tabz's user avatar
  • 43
4 votes
2 answers
2k views

Cisco: Two interfaces on one network

I'm a newbie to Cisco Equipment and IOS, but got myself a Cisco 2811 and have been playing with it and getting to grips with the basics quite happily. One problem i'm having is trying to get two ...
DevelopedLogic's user avatar
3 votes
3 answers
8k views

What are the collision domain reducing devices?

What are the collision domain reducing devices? if collision reduce how it advantage to network?
Manjitha Teshara's user avatar
3 votes
1 answer
253 views

Do Directly Connected Routers Need Routing Protocols For DHCP Relay To Work?

Let us say that we have R01, R02, and R03 connected to each other, and each of them is connected to a different subnet SUB01, SUB02, and SUB03, respectively. R03 is set up as a DHCP server, and DHCP ...
Shadi's user avatar
  • 285
3 votes
1 answer
760 views

VLAN Ingress filtering process on switch

I read and read the information and somehow it is inconsistent or incomplete. The specification of 802.1Q also read, but to me as a person who has not previously read the specification is difficult. I ...
Manticore's user avatar
  • 141
3 votes
2 answers
2k views

Connect two routers to a single uplink for full redundancy

I have a single uplink with my ISP at a data center. I have 2 routers (CISCO 3850). How do I connect these routers to that uplink WITHOUT a network switch? That switch will be a single point of ...
Igor Chulkov's user avatar
2 votes
1 answer
2k views

NAT and two internet providers, how to configure failover

Will you please help me to setup ISP2 as a failover internet provider. Configuration as follows: ip source-route ! ip cef ! no ip domain lookup no ipv6 cef ! multilink bundle-name authenticated ! ...
PSh's user avatar
  • 21
2 votes
1 answer
8k views

Broadcast link vs. point-to-point links

What is the distinction between broadcast links and point-to-point links? In the paragraph below, the author switches between "broadcast link" and "broadcast network" which is causing my confusion..is ...
nnkparikh's user avatar
  • 123
2 votes
1 answer
1k views

Waiting time in CSMA/CD doubt

I have a doubt regarding the time a particular node will wait after collision. I am using numerical values here so that one can easily understand my doubt. Suppose in a network, we have 2 nodes A ...
Zephyr's user avatar
  • 441
2 votes
2 answers
1k views

Why are proxies implemented on the application level of the OSI model?

Why are all proxy servers implemented on the application level of the OSI model, and not the network level? Is it possible to implement a proxy server on the network level? Such as on the gateway ...
Casper Alant's user avatar
1 vote
1 answer
391 views

What is PPP and why does it not have a MAC address?

I just wanted clarification on what exactly PPP is and why it does not have a MAC address due to having seen that under a response to a question of how routers transverse packets to their destinations....
N.C.'s user avatar
  • 13
1 vote
1 answer
452 views

I have issue with MSS and window size [duplicate]

I made a short example because I have tried understanding the difference between MSS and window size in tcp header when we consider a sender and a receiver. So let's say sender and receiver use the ...
eyesima's user avatar
  • 113
1 vote
2 answers
5k 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 ...
Satish's user avatar
  • 4,379
1 vote
1 answer
615 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
  • 1,541
1 vote
2 answers
216 views

Ethernet connection wireless bridge

I am a member of Stackoverflow, and new to Stackexchange, I have a question to which I couldn't yet find an answer to. I'm wondering if there exists such a device as some sort of a wireless bridge to ...
Chihab's user avatar
  • 11
1 vote
2 answers
5k views

Confused about the results from the cable tester

A little bit of backstory, just in case you want some context. In the last couple of weeks the network at least internally has slowed down. As far as I can tell the only things that have changed has ...
Eddy's user avatar
  • 13
1 vote
3 answers
2k views

ARP Table basics

I'm using the arp -a command to look at the ARP table on my personal computer. After executing the command it shows two types of addresses, dynamic and static. What do the dynamic and static types ...
Mayank Mehra's user avatar
0 votes
2 answers
3k views

Loopback Interface speed is 10 Mbps but Incoming and Outgoing Traffic is in Gbps

I am writing a script which mails interface data to network admin. For this I'm using LibreNMS and RRDTool to gather data. On inspecting one of the loopback interfaces, I found that the interface ...
Giridhar Shenoy's user avatar
0 votes
1 answer
184 views

What steps must be accomplished in each layer of the TCP/IP model to connect a website?

What steps must be accomplished in each layer of the TCP/IP model to connect a website?
ShooterLens Aim's user avatar
0 votes
1 answer
44 views

Is there a way to determine my network transportation to specific path?

How can I determine my network transportation to specific path. I would like to determine that my data packages will go through specific routers.
Avi's user avatar
  • 129
-1 votes
1 answer
836 views

different network mask and subnet mask and netmask [duplicate]

1- what is network mask? 2- what is subnet mask? is there any differnt between network mask and subnet mask? i'm tried to search about network mask and nothing found is it called netmask ? thank you
zahra kut's user avatar