Questions tagged [ip-address]

A numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication.

Filter by
Sorted by
Tagged with
0
votes
4answers
48 views

IPv6 addresses plan and allocation

I read at several places that ISPs should allocate a /48 (or /56) IPv6 addresses blocks to end users Wikipedia for instance The RIRs assign smaller blocks to local Internet registries that ...
0
votes
0answers
10 views

Forwarding my domain to dynamic address of my raspi [closed]

I have a domain and a raspi where I am hosting a nextcloud server. I was wondering whether it is possible to forward my domain to the raspberry even thought my router only has a dynamic ip address. I ...
0
votes
0answers
16 views

How are IP datagrams transmitted from routers to AP to destination? [closed]

Assume two 802.11 wireless networks are connected to the rest of the Internet via a router as shown in the figure. The router has received an IP datagram with the destination IP address 24.12.7.1 and ...
0
votes
0answers
10 views

Share a file or web page(html would work too) to a specific person using internet [closed]

I know there are lots of methods of sharing now but I want to create a web page and publish it on the web but don't want search engines to find it.I don't even want any custom domain or any domain at ...
0
votes
0answers
16 views

Do any subnets “Network ID” AKA “Network Address” always have an even number as the last octet? [duplicate]

Should a subnet have a "Network ID" AKA "Network Address" (eg: the first address, which is always unusable, and is the boundary between the previous subnet and the current subnet) ...
-1
votes
0answers
9 views
0
votes
1answer
36 views

What IP addresses are appropriate for a network inside an embedded device? [closed]

I am making an embedded device with two processors, a "gateway" processor which is connected to external ethernet, and a "webServer" processor, which is only connected to the ...
-1
votes
0answers
12 views

IP Address mathematics-: How to add 120.89.96.129+399? [duplicate]

I am doing subnetting numericals to get my first job of network technician and I stumbled upon this math. I know the range of IP is upto 255. But I am not exactly sure how to add value to IP address ...
3
votes
4answers
172 views

Question about ARP requests

When a device tries to associate an IP address with a MAC address for a given device, it sends ARP requests to all devices connected to the same network. If I understand correctly, the searching ...
0
votes
1answer
34 views

Addresses in router's subinterfaces overlapping [duplicate]

I can't really understand why I'm getting overlapping addresses in subnets when they're between the allowed range. I have the network 192.168.1.0/24, and I have to create 3 subnets: A - 58 Hosts B - ...
0
votes
1answer
41 views

How does a device on one network connect to with a device on another network

So if i have two routers and each router has lets say 2-3 computer devices.I am connected to the 1st router. So if i want to connect from my device to a device on the 2nd router than I will send the ...
2
votes
3answers
709 views

Private IP address vs Local IP address

Say a router is connected to two devices. Now the router will give those two devices different private IP addresses. The router itself has a private IP address (which serves as the default gateway for ...
-1
votes
1answer
21 views

how does a host learn about other hosts IP addresses connected on the same subnet? [duplicate]

My question is similar to one posted [here][1] But answers are not understandable to me. How can a host (say my laptop) learn about IP addresses of other devices (say my phone) on the same subnet. ...
4
votes
1answer
92 views

What are the negative impacts of using non RFC1918 addresses on a private network?

I work for a company overseeing network design of a large industrial system. For our purposes, it's a backbone network that other stakeholders have their own L3VPNs defined on. It is a network with ...
2
votes
1answer
24 views

Assigning static IP address from the DHCP pool range on Cisco 800 series

What happens if I assign a static IP address to a device in a LAN where there is an active DHCP server and the address falls within the configured DHCP pool and DHCP server is Cisco 800 Series? Most ...
1
vote
2answers
61 views

What does IP address assignment actually mean?

I don't understand when it said organization like IANA 'assign' block of IP address to RIRs. I mean did they just write this block belong to this RIR, this other block belong to that RIR, etc... and ...
1
vote
1answer
30 views

ARP isn't showing all the interfaces/MAC bindings

I'm playing with Dot1x port authentication, the interface G2/0/2 is connected to a PC and is authenticated/authorized successfully: SW1-2960#show authentication sessions int g2/0/2 det ...
0
votes
0answers
22 views

What're the relations between 127.0.0.0/8 and 127.0.0.1? [duplicate]

What're the relations between 127.0.0.0/8 and 127.0.0.1? As per this post, it seems that they are the same thing. I am a newbie at the network, could somebody shed some light on this question? ADDED: ...
1
vote
1answer
24 views

Fail-Safe Network With 2nd Switch?

Is it possible to set up the same VLANs on two different switches with same IPs, but different MACs on dual port network cards? In case switch 1 is down or needs maintenance I would like switch 2 to ...
0
votes
1answer
47 views

What is the difference in reliability of sending a pure ACK packet (without any data), as opposed to a data packet in TCP?

I was going through the book TCP/IP Illustrated and in the zero windows section, I noticed the use of a TCP persist timer - which is used to avoid losing a window update message from a receiver after ...
0
votes
2answers
71 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
11 views

subnetting to give 4 2000 adresses [duplicate]

A large number of consecutive IP addresses are available starting at 198.16.0.0/19. Suppose that four organizations, A, B, C, and D, request 2000, 2000, 2000, and 2000 addresses, respectively, and in ...
0
votes
0answers
16 views

Can two hosts with different subnets connected with a switch talk if they know each other's MAC address? [duplicate]

EDIT: There is a seemingly similar question already, but it doesn't explore what happens if you don't need to do an ARP request at all, which is what seems to be hindering the communication there. The ...
0
votes
0answers
12 views

Divide IPv4 network into subnets in a SPECIFIC order [duplicate]

My private addresses start at 10.10.0.0/16. I must make 2 subnets with 120 and 450 starting with the 120 one and not leaving any unnecessarily unused addresses. Let me remark, it's IMPERATIVE that the ...
-1
votes
2answers
91 views

Why do we need private IP address range?

When it comes to local networks, you have the freedom to use any IP address you want for your network since it doesn't need to communicate on the internet with other devices. However, the RFC ...
0
votes
0answers
9 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
0answers
7 views

A question from an online subnetting quiz [duplicate]

Does anyone know the last usable host IP address for the 172.45.120.0/23 network? And an explanation of how you got the answer? It's a multiple choice question on an online subnetting quiz. I'm ...
0
votes
1answer
25 views

directed broadcast ping on overlapping subnets

I have a router with 2 hosts connected to it. R: 192.168.0.1/24 host 1: 192.168.0.9/28 host 2: 192.168.0.15/24 Host 1's directed broadcast IP is the same as host 2, so what happens if host 1 pings 192....
0
votes
0answers
9 views

Dividing Network into Subnets [duplicate]

Divide the network 172.16.0.0/22 ​​into subnets of the following size: 128, 300, 40, 20, 20. How exactly is this done?
-1
votes
1answer
34 views

Why can't I access Whitehouse.Gov with the IP address or the Aliases? [closed]

I'm studying the basics of networking at the moment, and I was testing out what I had learned when I discovered that I could not access WhiteHouse.gov via the IP address. After using dig on WhiteHouse....
-1
votes
1answer
39 views

What is the maximum number of networks in IPv4?

From my understanding, in IPv4 addressing, the first 2 octets identify the network, meaning 2^16 networks can exist. But that doesn't seem even closly enough as the population in even USA is above 300 ...
1
vote
2answers
60 views

Basic conceptual questions about network interfaces

I have some basic questions as I am trying to understand the concept of network interfaces a bit better. Is network interface same as network interface card (NIC)? If not, what's the difference. What ...
0
votes
0answers
18 views

Why did we not run out of IPv4 adresses yet? [duplicate]

I know how IP addresses work and I also understand the reasons why there is a natural limit to those addresses, as well as the solution to that problem. Officially, we have ran out of IPv4 addresses ...
1
vote
1answer
131 views

Why does this ip address give me an error “must be valid ipv4 cidr”?

If I set up an AWS VPC with CIDR of 10.0.0.0/20 then the range is 10.0.0.0 to 10.0.15.255 I make a subnet now. Why does 10.0.15.15/28 give an error. Isn't it's range 10.0.15.15 to 10.0.15.30 which is ...
1
vote
0answers
22 views

Why did the IANA specifically choose these ranges for the the private IP address space? [closed]

10.0.0.0/8 IP addresses: 10.0.0.0 – 10.255.255.255 172.16.0.0/12 IP addresses: 172.16.0.0 – 172.31.255.255 192.168.0.0/16 IP addresses: 192.168.0.0 – 192.168.255.255 Is there any reason behind ...
1
vote
1answer
48 views

Confusion regarding possible IPv6 Link Local address prefixes

I have trouble understanding how many alternative link local IPv6 address prefixes may exist. I know that the prefix is fe80::/10 which implies that the first 10 bits must be static as: | 10 ...
3
votes
1answer
60 views

Error in IPv4-to-IPv6 mapping of Google IT Support Professional online course?

In part "2. The Bits and Bytes of Computer Networking" → "Week 6" → "5. IPv6" → "3. IPv6 and IPv4 Harmony" of the Google IT Support Professional Certificate ...
0
votes
2answers
30 views

Is it customary to not have any addresses in an organization available for private networks? [closed]

I encountered this setup in the wild: a campus has a big internal network. They're using IPv4s from 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16 as expected. The part that surprised me is that they ...
-3
votes
3answers
153 views

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 ...
2
votes
3answers
79 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 ...
0
votes
4answers
435 views

How the device chooses between multiple DHCP pools?

In a router , you can create and configure multiple DHCP pools each one with its own default route and dns server . And because the DHCP pool configuration is not specific to an interface in a router, ...
0
votes
2answers
518 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" ...
1
vote
1answer
63 views

what is happening when a host receives a datagram with its MAC address as a destination but different destination IP

In a specific network say the host receives this datagram what is happening ?
0
votes
1answer
55 views

Why does my enterprise issue me a public IP address instead of just a private IP address?

Let's say I work for a big enterprise organization. When looking at my IP address, I notice that it is not a private IP address but is instead a public IP address. What are the benefits of ...
0
votes
0answers
7 views

network question [duplicate]

can someone please explain this question and answer Based on networks 10.8.16.0/22 and 10.8.31.0/21, which of the following is the BEST summarized CIDR notation? A. 10.8.0.0/16 B. 10.8.0.0/19 C. 10.8....
1
vote
2answers
137 views

How does the ARP table know to update if two hosts flop IP addreses?

When hosts on the same local network communicate, they manage their own ARP tables which translate between IP addresses and MAC addresses. Thus when computer A needs to send data to IP address ...
0
votes
2answers
109 views

Cisco Router on a Stick IP Addressing

I have been running into IP addressing problems with my Packet Tracer network and VLAN assingments. I have 2 switches connected to a router, 1 switch has 4 VLAN's and the other has 3 VLAN's I can't ...
2
votes
2answers
38 views

Understanding IPV4 address range [duplicate]

I do have basic understanding of IP Address which is unique address for each System either in an organization or over the internet. But i want to understand what is IP address range Lets Say we have ...
0
votes
3answers
54 views

Does Anycast allow any low-level destination control?

As an experiment, I'd like to get responses from a few different 8.8.8.8 servers (per anycast, multiple physical machines are grouped as one IP address, and I believe inspection of the request/...
1
vote
2answers
245 views

Are all packets addressed with the MAC address of the router as they leave the machine?

In the Comptia Network+ All in One, it is said that most home routers have a switch built into them. It is also said that the first thing the router does is strip off any layer two information present ...

1
2 3 4 5
9