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553 ip questions.

The following just happened to me: While i was browsing a site on my pc i used my phone to google for something. Instead of showing the search results i was redirected to the same page that was open ...

I want to connect wireless camera to a local network. The wireless camera's range in line of sight is 100 meter. if i'm creating a local network using my phone (hotspot) which gives range 30 meter ...

The question is as the title describes, what I am trying to do is: create a tun device, read the IP packet from the device; change the dst_addr, dst_port, src_addr, src_port and the port in its ...

I would like to ask something. Probably, that was a simple thing but I'm new at network business so thanks for your kindness. In the topology image given below, the router "Router1" has an input ...

I'm practicing addressing schemes using VLSM for my exam. The question and my answers are below. -I wasn't too sure about the number of hosts for the R1-R2 and the R2-R3 links. Are they correct?

We have a router with NAT enabled on our edge. The NAT inside is 10.0.0.0/24. Now, we're running out IP blocks and we wish to change this to 10.0.0.0/22. We can do this quickly on the NAT router. But ...

i have a fixed Line, to which The router is connected (DHCP Enabled) Dynamic IP. I have a Switch connected to the Router. (8 Port TP Link) I have four machines connected to the switch and the count ...

Diagram: https://i.stack.imgur.com/ZxFWd.png Am I correct in my assumptions: If PC1 pings PC3, PC1, PC3, PC4 and PC5 would see the ping request but only PC3 would respond IF PC4 sends a ping request ...

As there are two types of IP addresses, why static addresses are harder to maintain, and if they are so what is their advantage to have one instead of dynamic IP adresses?

How does WAN work?

2 answers, 72 views ip ipv4 ipv6 lan wan
I understand the basics. WAN is a network that connects multiple LANs together. Usually the router is the connection between the LAN and WAN. But I have some questions books and the internet could not ...

I am building my fundamentals on IPv6 and have realised the multicast group is nothing but FF02::1:FFXX:XXXX. Here xxx is nothing but 24-bits of Mac-address (48 bits) with simple 7th bit magic. ...

I have been using these protocols without deep understand how everything works under the hood. I understand a process of tunneling as follows When we are using protocols like OpenVPN, IPSec, SSH ...

The network topology is router A and router B are directly connected with IP addresses configured on their physical interfaces int gig 0/0/1 and gig0/0/2. The third interface gig0/0/3 is configured as ...

A beginner question, I've recently read in Cisco CCNA R&S 200-125 official cert guide that the packet leaves the PC with a destination IP of PC2 (the target) but with the MAC of PC2 in case of PC2 ...

OSI is known for using hundreds of protocols to do its job. Both OSI and TCP/IP have Transport and Network(Internet) layers where TCP and IP protocols work respectively. It is clear that TCP/IP model ...

So why they didn't use ARP in IPv6? is there any real benefit of doing this? what are the key advantages and disadvantages of using NDP instead of ARP? (In overall network performance, Security and ...

I am currently looking into the TCP/IP stack and analysing packets sent and received by my desktop. I understand the concept of SYN, SYN-ACK, ACK, however after physically looking at some packet data ...

CRC done by ICMP?

1 answers, 36 views ip icmp
cyclic redundancy check (CRC) done by Internet Control Message Protocol(ICMP)? how can help Time to live(TTL) for this?

subneting question [closed]

1 answers, 32 views ip
i have doubt on this question, please clarify You are designing a subnet mask for the 172.16.0.0 network. You want 80 subnets with up to 300 hosts on each subnet. Which subnet mask should you use?

Where is ip padding insert in ip data-gram format, after payload?

TCP segment go inside IP packets,there are many problems IP packets get queued in intermediate routers and can delay their delivery to the destination?

TCP segment encapsulate it IP payload,if some way ip packet is lost in transmission. some time IP packet will be fragmented, i ask if this one fragment part will be lost in transmission.how can fix ...

Is it smart to have ACE #deny ip any any option any-options enabled as part of hardening the router? Is there some legitimate traffic that use IP options? Or should I use selective drop?

I have a 1Mb/s link each user uses 100Kb/s when active. With 10 user active 10% of the time, I can have 10 users in a circuit switched environment. Packet switching with 35 users, probability > 10 ...

What does this specification mean? I asked the one who gave me this but I did not understand. Vlan 22/23 192.168.10.3/11.4 a) Does 22/23 mean that 23 subnets have been allocated b) The forward ...

I'm studying the difference between the protocols IP and TCP. IP is said to provide an unreliable datagram service whereas TCP provides a reliable bytestream service. Further, TCP works on top of IP. ...

With a /31 subnet, we are left with zero usable hosts. The /31 subnet only has two hosts - one for network and another for broadcast. I am wondering why would someone ever use this subnet.

I’m working through questions from computer networking top down approach and was hoping to get some clarity on the end-to-end delay calculation. At this stage we are not considering processing, ...

So basically do the modern routers in the internet still use 1500 as the MTU of Ethernet? or the 1500 Byte was for the old days? What I'm asking here is what is the MTU of Ethernet in modern Networks?...

We have a D-Link router (DSL-2730R) with the "Alias Ip Address" feature. This enable a logical network from the primary IP. I want to do the same on the Router Cisco Rv-110w, ¿it's possible, what ...

I have started to work in a multinational company which has a global network spanning across 4 continents (20 0000+ network devices). I noticed that a lot of end user devices (PCs, laptops) have IP ...

The first and the last IP addresses of a subnet are 192.192.8.0 and 192.192.63.255 respectively. how to find the subnet mask?

I am starting my studies in networking and starting off with the basics of IP addressing and Subnetting with CIDR values. My Question here is 1st how can you tell the subnet class of an IP address ...

In case of an intrusion does changing my private ip/lan ip helps ?

What is the latency of IP over Infiniband compare with 10Gbps fibre network? 10Gbps network is something like a Solarflare low latency NIC card. How well does IP over IB perform not just throughput ...

What are the components of the IETF's CIDR Prefix Notation called? 172.16.0.0/16 contains two parts: 172.16.0.0 /16 In the RFC the entire term 172.16.0.0/16 is defined as the "Prefix Notation" for ...

I am using the GNS3 simulator, and I need to connect two Cisco C7200 routers. When I enter the ip address 126.0.0.4 255.255.255.252 command, I get Bad mask /30 for address 126.0.0.4.

I'm not sure whether this is really the correct place to post this question, because it's not really about a "professional" setting. However, I have the standard setup with computers behind a netgear ...

Tinkering more with IPv6 and trying to unlearn the IPv4 stuff. Assume my router is correctly respecting the reserved addresses. LLIPs aren't going to pass through to the router's outside interface ...

Internet Protocol version 10 (IPv10) Specification The name is funny (IPv4 + IPv6 == IPv10), but the actual proposal looks strange (one more packet format to battle incompatibility between packet ...

What's the reason for calling certain TCP inner workings flags?

Which software and hardware parts of a computer are responsible for adding or removing values to the initial payload of a data packet in every layer of OSI or TCP/IP model? In other words, which parts ...

MAC addresses innately do not change right? and you're able to scan for broadcasting APs where you'll be able to detect different nearby mac addresses of each AP.. Public IP addresses change, ...

can i check the ip of the machine attached with the network switch port from the switch console? I just wanted to get the IP address of all the attached devices by running a simple command in switch ...

When I configure a network interface in Windows to have a static address, I have to go to TCP/IP settings. In this TCP/IP settings dialog I can set IP, subnet and gateway, which are IP- and route-...

The TTL (Time to Live) is an 8-bit field in the IPv4 header. It can take any value from 0 to 255. If this means that the packet can take a maximum of 255 hops (routers) on its way to its destination, ...

I'm studying networking from the book 'A top down approach' from Kurose and Ross. In the book it is stated that routers are generally considered Layer 3 devices (i.e. implementing the stack up to ...

Questions: I'd like to know how ICMP packets travel in a network? Are they encapsulated within IP datagram? The RFC 792 doesn't explicitly states the layer of ICMP. Are ICMP messages sent using a ...

ESP in tunnel mode

2 answers, 124 views ip tunnel
When Encapsulating Security Payload (ESP) is used in the tunnel mode, a new IP header is computed and added. Why is this necessary? Thank you.

I am currently studying my home network router Sys Routing Table and attempting to resolve WHY my Public IP (assigned by my ISP), Gateway IP (WAN) and Destination Network (WAN) are all different. I ...

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