Questions tagged [lan]

For questions about Local Area Networks (LANs).

Filter by
Sorted by
Tagged with
0
votes
0answers
8 views

What is the difference between a name and a DNS name? [closed]

In the DNS configuration of my router, I have this table where I can change the dns name of the devices: What's the difference between name and DNS name? Aren't both supposed to be the strings that ...
0
votes
1answer
43 views

Why use subnet mask /30 for the internet port of the edge router? [closed]

In the following network, why should we pick the subnet mask /30 for the internet port of Edge Router 1? Since the wireless access point Edge Router 1 needs to connect to 3 hosts in LAN 1, a subnet ...
0
votes
0answers
12 views

Can VPN software work without actual "physical" device? [closed]

I am wondering how VPN software works in general. I am a newbie to VPN and I am investigating. To be specific, my company has Pulse Secure VPN and we connect to VPN with Pulse Secure local client ...
0
votes
2answers
61 views

How does one determine what the default gateway should be in a multi-router setup?

Trying to set up a network with multiple routers, very similar to what's depicted in this diagram from the FreeBSD handbook: In particular, regarding this specific diagram, what should the default ...
0
votes
3answers
68 views

How to learn IP addresses in a LAN

For communication with machines in the same LAN, hosts do ARP for translating the IP address to MAC address, which means, IP addresses are already known to each other. My question is, how does the ...
1
vote
1answer
43 views

can't ping the WAN IP of a router

I learned to use cisco packet tracer and found something confusing but actually this is not about the cisco packet tracer . I'm curious if this apply in real network as well. So i tried building this ...
0
votes
1answer
19 views

Is fiber to computer(without the use of any other cables in between) possible?? Are any further developments getting carried out towards this goal? [closed]

All of us know well that the fiber to home(FTTH) connections are a trend nowadays. Every nation is planning to replace the existing metal wires with optical fiber cables. But we also see that the ...
0
votes
1answer
36 views

How can I set up two sub networks that can communicate by LAN but where only one has internet? [closed]

With only two routers, where one has a connection to the internet, is it possible to set up a second sub network that has no access to the internet, but where devices connected to either router can ...
2
votes
1answer
79 views

iSCSI with dedicated switches

Looking to purchase some dedicated 10GB switches for our iSCSI setup. Would the following setup allow us to use two switches for redundancy? Two VMWare ESXi hosts, each with 2 10GB NIC Storage with 2 ...
2
votes
1answer
93 views

Why must host A continue to transmit after host b sends runt frame post collision on ethernet? (CSMA/CD)

Trying to understand example from computer networks: a systems approach ... -Host A sends Host B a frame at time t; Packet arrives at B at time t + d; (d = one link latency) Instant before frame ...
0
votes
2answers
163 views

can LAN port have multiple IP addresses of same subnet mask or different subnet mask

Can the router's ethernet interface have multiple IP's of the same subnet or different subnet mask? If yes what's the use?
0
votes
0answers
14 views

lan with multiple ip [duplicate]

If imagine lan assigned ip from from this range (192.168.1.0/24) then can we assign another ip from same subnet mask? If no why?
1
vote
1answer
39 views

What exactly defines a WAN?

I've found this question but it doesn't seem to answer my question. What is the "technical" definition of LAN and WAN I know that a Wan consists of more LAN's together and MAN's and it's ...
1
vote
1answer
35 views

How Switch knows if the packet reached it's destination?

In a Lan connected using switch, For the first time if the sender sends a data to the destination, then the switch will send the data to all the devices in the network, and the devices will have to ...
1
vote
1answer
45 views

How do switches handle network data if the destination computer is powered off in half-way?

Consider a lan network with a switch. Assume the switch has the mac addresses of all the devices in it's newtork. If the source computer sends the data to the destination computer through a switch, ...
1
vote
1answer
25 views

Does a receiver send acknowledgements after data received/failed in a bus topology and in ring topology? If so, how?

if in a bus or ring topology, is there any acknowledgement or error mechanism that if a packet is sent/or failed to receive/lost.
2
votes
1answer
44 views

Lan and baseband channel

We know the baseband line at one time send or receive data(half duplex). If more than one host send data at same time may occur collision. In bus topology see the same thing. Inspite this in home, ...
0
votes
1answer
4k views

Correct way to set up network with multiple routers/access points over fiber/ethernet [closed]

Heading Below is a network map for a network. Router 192.168.0.1 has DHCP enabled. Routers 0.2, 0.3, and 0.4 are connected via their LAN ports to router 0.1 by ethernet cable, and have DHCP disabled ...
1
vote
2answers
551 views

If, and why torrent traffic is creating greater congestion on a link, than regular traffic of the same size?

For simplicity let's assume that we have very simple LAN. There is some router with uplink to the internet. To this router there is connected some basic 24 ports switch, and from that switch there are ...
0
votes
1answer
329 views

How to configure IP addresses in cisco packet tracer?

Hello I am working with Cisco packet tracer. I have two laptops connected to a wireless router with IP addresses assigned using DHCP. The router's Internet IP address is 10.1.0.0 and the LAN address ...
1
vote
1answer
84 views

Will devices with static addresses, will be disconnected when DHCP Server is changed?

In my office network, the DCHP Server is set to 192.168.0.1/24. I want to increase the available pool, so I am thinking update the above setting to 192.168.0.1/23 in order to have: Network: 192.168....
2
votes
3answers
54 views

Where is CSMA protocol really implemented?

I have multiple questions. Where is/were CSMA protocol really implemented ? i.e In our computer ? routers ? switch ? or which component ? is is s/w or h/w based ? Is it still used ? if not, which ...
1
vote
2answers
8k views

Connect a LAN cable to LAN1 & LAN2

I connected a LAN cable from the LAN-1 port to the LAN-2 port owned by the same router. Then really weird things happened: For 10 - 15 seconds, nothing happened, none of the lights on the modem are ...
11
votes
3answers
6k views

Why do we need MAC Address if we can uniquely identify each machine with an IP Address

I learnt that in ARP Protocol, to send a packet from one machine to another machine we need to know the MAC Address of the destination machine but since the destination has already been assigned a ...
1
vote
2answers
83 views

Losing connection when connecting a server to Stratix 5400?

I have a problem that when connecting a server to Stratix 5400 the Stratix loses connection for some seconds which causes a Safety Fault for the line because we have Safety PLC’s any help. ,Software ...
0
votes
0answers
12 views

What exactly defines a LAN? [duplicate]

I'm trying to understand what exactly defines a Local Area Network as such? This is how Wikipedia defines a LAN, and that sort of how it's defined anywhere else I found: A local area network (LAN) is ...
0
votes
3answers
69 views

Is it possible to have a local area network with only layer 1 and not layer 2 of the OSI model?

I know the OSI model has seven layers. Can you consider a LAN to exist without layer 2 and just layer 1? The answers that I saw on Quora were not clear. Some of the answers on Quora came close to ...
1
vote
0answers
23 views

Merge (and split) 2 different LAN in one Cable with VLAN? [closed]

I am searching for a way to connect two different buildings with one GB Ethernet Cable. On both LAN i have two different routers with different subnets that needs to be remain in the new building. The ...
6
votes
4answers
7k views

Why do we use VLAN?

According to my understanding, the network switch will look out for the specific MAC address and then it will forward the frame so basically it doesn't broadcast the frames then why do we make VLANs? ...
2
votes
3answers
22k views

Is it better to use channel 13 than channel 11 on 2.4GHz band

When I analyzed the wifi networks in my area, most of them are set on channel 1 and channel 6, so it would be most wise for me to set it on channel 11. My router however, provides the option to set ...
3
votes
4answers
4k views

How can multiple devices share an IP across the internet?

I do realize that most LANs sit behind a device running NAT, which translates the users private IP address to a public IP address. My question is still if you are trying to connect to a private device,...
2
votes
2answers
1k views

How the two computers are able to ping themselves which are connected to single router but both are in different Network?

I have configured network as shown in figure. as we know that we can't ping computer which is in the other Network without routing protocol. then how I suppose to ping this computer as shown in figure ...
1
vote
3answers
112 views

What could go wrong if I use public IP range for intranet?

One of out clients is using a sub-network of 172.168.100.0/24 or
1
vote
3answers
3k views

Which is the best way to encrypt all the IP traffic in LAN?

I'm trying to encrypt all the IP traffic in a small LAN network but the in that network all kind of devices are connected i.e. PCs, Laptops, IP Cameras, IP Sensors, etc (new and old devices). I have ...
0
votes
1answer
584 views

ssh: Could not resolve hostname (updating hostname for machine on local LAN) [closed]

I have connected a raspberry pi 4 running ubuntu 20.04 to my local LAN over wifi. From my laptop I can SSH to the raspberry just fine with: $ ssh ubuntu@192.168.0.47 Welcome to Ubuntu 20.04.1 LTS (GNU/...
0
votes
0answers
78 views

Using GNS3 to Sniffing Packets on Siemens RuggedCom RS900

I am using GNS3 to simulate an environment. I have 4 docker containers which all host Python programs. Three of the devices communicate with each other via the programs (Program 1, Program 2, Program ...
5
votes
2answers
16k views

pfSense 2.3 How to setup each Lan traffic goes only over specific gateway

I am running a pfSense 2.3 box with 4 NICs. Now i have 2 different ISPs (one Cable & one DSL). How Can i configure, that all traffic from LAN1 goes ONLY over WAN1, and all traffic from LAN2 goes ...
0
votes
2answers
622 views

I'm confused about ethernet interfaces (eth/in, eth/out, eth/local)

I'm using an Edgemax router (EdgeOs), and even after having read posts and checked internet pages, I'm still very confused about which of my ethernet interfaces are communicating with what. My LAN is ...
1
vote
3answers
205 views

What kinds of organizations use routing protocols (aside from ISPs)?

I don't understand why would an organization aside from an ISP even use routing protocols. Let's say there is a big company with 5000 employees, and they want to have a network throughout their ...
0
votes
2answers
38 views

Setting up a secure LAN within an existing not owned LAN [closed]

Shown in the figure is a univercity network. The devices inside the red boxes are owned by the laboraroty in which I am working. I want to setup a secure subnet for all devices that are within the red ...
0
votes
2answers
969 views

Connect two Ethernet network devices with fibre cable

Having an ethernet crossover cable it is possible to make a lan, connecting both devices directly with no need of a router or switch. Of course it needs some configuration. The question is: Is it ...
1
vote
2answers
79 views

Weird address in my network

I pinged all hosts in my network. Only my PC and my phone are connected to my network. Therefore I received three addresses, not two. This weird one is 192.168.1.1. It isn't neither my PC nor my phone ...
0
votes
0answers
188 views

Ping over WAN to LAN (and from server to hosts)

I have a network similar to the one shown at the picture below. The main aim is to get connectivity between antivirus server (10.100.10.9) and hosts placed behind their LAN-gateway (network 10.200.1....
0
votes
2answers
1k views

Two routers on the same subnet - Possible issues?

What issues can occur when two routers are set to the same subnet (no cascading, both cable connected to the same switch)? For instance: - LAN: 192.168.1.0/24 - Router A: 192.168.1.254 - No DHCP, ...
0
votes
1answer
288 views

What environment is still using the Token Ring network?

I have struggled to find what kind of environment (Eg: Educational, Medical environment, etc) where the Token Ring network is still used in this present time and why are they still being used. It is ...
0
votes
2answers
48 views

Can computers connected within a Network via Ethernet monitor access the information uploaded/downloaded on a different computer

Suppose there are many computers connected within a Network. Let's take 2 examples. Computer A and Computer B, connected within the same network. Suppose, At the start of the day, say myself as an ...
8
votes
3answers
4k views

Why do LANs use MAC addressing instead of IP addressing?

Why do LANs use MAC addressing instead of IP addressing? In other words, why can't a network just assign an IP address to a local area network device and send the data to that, instead of the MAC ...
2
votes
1answer
71 views

MACsec Switch-to-Switch authentication/encryption

I have some questions regarding MACsec IEEE 802.1 AE-2018 and PNAC IEEE 802.1X-2010. As I have heard there is no swich-to-switch protection with 802.1X-2010 by this standard I want to know where is ...
1
vote
1answer
35 views

Will DHCPRequest get ignored by other computers?

I've been reading about DHCP and see that it uses limited broadcast to send its initial request to reach a DHCP server. I read about limited broadcast too which says it sends the message to every ...
0
votes
1answer
255 views

RV320 router between 2 access points and secondary VLAN [closed]

I have a Cisco RV320 that is sitting between 2 different routers/access points on my network. Essentially: My ISP's router/access point <-----> RV320 <-----> My other access point My ...

1
2 3 4 5 6