Subnet Cheat Sheet
- Dec
- 14
- Posted by TKH Specialist
- Posted in networking, System Administration
Subnet Mask Cheat Sheet Posted here because 95% of the networks are the same and when I encounter a different one I have to think about it…not any more! See RFC 1878 for more details & information. Addresses Hosts Netmask Amount of a Class C /30 4 2 255.255.255.252 1/64 /29 8 6 255.255.255.248 1/32 […]
read moreNetwork Interface Name in rhel7
- Dec
- 07
- Posted by TKH Specialist
- Posted in networking, RedHat 7, rhel 7
Anyone who has installed rhel7 knows how annoying it is to check you network and not see eth0. Perhaps it is just me then… Regardless here are instructions on how to change it: First you need to know the name of the network adapter in use, you can look in /etc/sysconfig/network-scripts/ifcfg-eno##### or run this command: […]
read moreSubnet Mask Cheat Sheet
- Nov
- 09
- Posted by TKH Specialist
- Posted in System Administration
Here is a “Subnet Mask Cheat Sheet” since I don’t have to remember this that often any more. Information found also via RFC 1878. Addresses Hosts Netmask Amount of a Class C /30 4 2 255.255.255.252 1/64 /29 8 6 255.255.255.248 1/32 /28 16 14 255.255.255.240 1/16 /27 32 30 255.255.255.224 1/8 /26 64 62 255.255.255.192 […]
read moreAfter Clone network configuration
- Jun
- 24
- Posted by TKH Specialist
- Posted in System Administration
The best part about Virtual Environments is the ability to clone new hosts from old ones. Most of our infrastructure resides in vmware, so when we clone a system it retains the old Nic settings. This is how you get the network interface working after cloning the system: vi /etc/udev/rules.d/70-persistent-net-rules remove eth0 rename eth1 to […]
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