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.
463 questions
1 vote
1 answer
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how does anycast network deployment work?
as far as i understand, anycast network i.e a /24 block is announced by a BGP with the same ASN from multiple regions. anycast networks such as 1.1.1.1 and 1.0.0.1 are largely used for DNS services or ...
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1 vote
1 answer
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How to set up IPsec for pfSense with load balancer in front that provides private IP addresses?
I’m trying to set up a network with the following configuration: My load balancer is a TPlink - E3707-M2 The challenge I’m facing is that pfSense requires a WAN interface with a public IP, but the ...
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2 votes
1 answer
226 views
Using NAT to isolate multiple network with the same IP space
I'm trying to create a network architecture that allows multiple identical IP space to be isolated with one and the other. To do so, I'm thinking that NAT could do this with the following topology. ...
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9 votes
3 answers
2k views
Is 223.1.2/24 (sic) correct way to label a subnet?
I ask this because I am reading a famous book Computer Networking, A Top-Down Approach 8th edition, by Kurose and Ross. On page 352 (pdf) I have this paragraph: The mentioned figure 4.23 looks like ...
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1 vote
0 answers
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Can Layer3 Switches share the same static ip pool? [closed]
In a building, 2 of Layer3(A, B) Switches is active. A has been used ip address pool (x.x.x.0/26, G/W:x.x.x.1). => Under Layer 3 of A, ip address (x.x.x.3~5) used. Can B use the same ip pool (x.x.x....
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0 votes
1 answer
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why private ip address need to use specific CIDR prefixs as /8, /12, /16?
"The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private internets: 10.0.0.0 - 10.255.255.255 (CIDR block: 10.0.0.0/8) ...
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1 vote
2 answers
104 views
network prefix inconsistency between public ip address and private ip address
"The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private internets: 10.0.0.0 - 10.255.255.255 (10/8 prefix) 172.16.0....
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1 vote
2 answers
236 views
What stops you from use private IPs in Internet?
I know there are some IP addresses ranges called "Private IPs" which are used in private networks and are not supposed to be used in public networks like Internet. I also read another ...
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1 vote
1 answer
151 views
Inner header and Outer header in tunnel packet
What should be at Inner header and Outer header in tunnel packet ? And then we have tunnel IP address(for both router), tunnel source IP address, tunnel destination IP address. In my understanding, ...
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0 votes
0 answers
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What does a byte-boundary mean in this example from Tanenbaum's book on subnetting? [duplicate]
To make CIDR easier to understand, let us consider an example in which a block of 8192 IP addresses is available starting at 194.24.0.0. Suppose that Cam- bridge University needs 2048 addresses and is ...
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2 votes
1 answer
111 views
How does the final next-hop router forward a frame to the destination device if the public IP address is that of its router
We know that all device’s connected to the same local network will have the same public IP address as each other, which belongs to their local router. So, since the IP packet’s destination address is ...
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2 votes
1 answer
102 views
Name for this network range formatting?
I'm working with an FTP server that only accepts IP ranges in this format: 192.168.128-255.0-255 What's the proper name for that format or presentation ? It is none of: CIDR: 192.168.128.0/17 Subnet ...
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1 vote
2 answers
143 views
What exactly does the term "main network" mean in subnetting?
In the computer networks course, we solve subnetting questions together with the teacher. There is a term we call the "main network". As far as I understand, we fill in this according to ...
0 votes
0 answers
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How is the number of sub-networks calculated? [duplicate]
I have lately taking interest in networking so I picked up a book to get acquainted with networking principles. The book I have chosen is that of Glen E. Clarke "CompTIA Network+ ...." which ...
0 votes
1 answer
298 views
Why is there overlap with two interfaces?
I am trying to configure router0, I assigned ip 192.168.26.1 to gigabitEthernet 0/0 and I tried to assign this ip: 192.168.26.33 to interface serial 0/0/0 but this error appears: 192.168.26.0 overlaps ...
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