
Why use subnet mask /30 for the internet port of the edge router?
Oct 19, 2021 · The /30 subnet mask provides the most efficient use of IP addresses by not wasting any IP addresses when it is applied to a point to point network connection.
32 bits or 30 bits for subnet mask - Network Engineering Stack …
Jun 30, 2020 · I know how to calculate the subnet mask. My question is: What is the last subnet mask that we can use for this IP. In case of subnetting, can we use 255.255.255.255 for this IP as the subnet mask or the last subnet mask that we can use is 255.255.255.252? I mean can we use all 32 bits in the creation of the subnet mask or we can only use 30 bits?
Solved: when and why we use /31 subnet - Cisco Community
Feb 7, 2011 · Solved: Hi all, i know about /30 subnet we use when we have to use point to point network. /30 we use when we need only 2 hosts on either end of network. cansomeone tell me why and when we use /31 subnet mask. thanks mahesh
ipv4 - Why are /30 subnet used for PPP connections? - Network ...
The connection comes with a public /30 subnet that we can use to our liking. We used one of the IP addresses for standard NAT, and one of the addresses for remote router access (ports 22 and 443) and port forwarding to a server (ports 4000-5000). It also uses a public /30 subnet for the PPP link, one IP for each endpoint. I don't understand why:
ipv4 - The slash after an IP Address - CIDR Notation - Network ...
May 26, 2023 · The slash and the number following it is just a shorthand way to write a subnet mask. It's called CIDR (Classless Inter-Domain Routing) notation. It's also commonly referred to as the prefix length. The number after the slash represents the …
/30 transport /29 WAN ISP setup - Network Engineering Stack …
Customer Usable IP Information (LAN BLOCK) Usable IP Block: 10.10.10.192/29 Usable IP Ranges: 10.10.10.193-198 Usable Subnet Mask: 255.255.255.248 If this were a typical ISP transparent bridge setup, I would have no problem setting up this internet connection.
bad subnet mask - Cisco Community
Mar 20, 2017 · Here you need to verify if the problem is the subnet mask or the IP included under the interface, in this case as the subnet mask is /24 you need to include a valid IP different with ending "0" or "255". Under the interface you can configure valid IP addresses only. Network: 192.168.1.0/24 Valid IP addresses: 192.168.1.1 to 192.168.1.254
This chapter removes that restriction by introducing variable-length subnet masks (VLSM). VLSM simply means that the subnet design uses more than one mask in the same classful network. VLSM has some advantages and disadvantages, but when learning, the main chal-lenge is that a subnetting design that uses VLSM requires more math, and it requires that you think about …
/29 subnet required for this intent, or is /30 ok?
Jan 10, 2024 · This new ISP for the enterprise has given me a single public IP address with a /30 mask that is in the subnet of the ISP device, and also 4 nearby IP addresses with a /29 mask. It seems to me that this offering is ineffective for my needs, because I need 2 IP addresses in the same subnet as the adjacent ISP device.
How do you calculate the prefix, network, subnet, and host …
Example: IP: 128.42.5.4 In binary: 10000000 00101010 00000101 00000100 Subnet: 255.255.248.0 How could you determine the prefix, network, subnet, and host numbers?