Disable IPv6 on Ubuntu 16.04

References https://www.linuxbabe.com/ubuntu/disable-ipv6-on-ubuntu https://askubuntu.com/questions/440649/how-to-disable-ipv6-in-ubuntu-14-04 https://support.purevpn.com/how-to-disable-ipv6-linuxubuntu

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Boost Ubuntu 16.04/17.10 Network Performance by Enabling TCP BBR

Install Linux Kernel 4.9 or Above TCP BBR is supported by Linux since kernel version 4.9. Use the following command to check your Linux kernel version.

Simply install the Hardware Enablement Stack (HWE), which provides newer kernel for Ubuntu LTS releases

References https://www.linuxbabe.com/ubuntu/enable-google-tcp-bbr-ubuntu

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Configure DHCP server on cisco router

References : http://www.firewall.cx/cisco-technical-knowledgebase/cisco-routers/812-cisco-router-dhcp-config.html

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Cisco RIP v2 IP Routing

References : http://blog.pluralsight.com/cisco-how-to-configure-rip-2

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Cisco RIP v1 IP Routing

References : http://blog.pluralsight.com/cisco-how-to-configure-rip-1

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Cisco Static IP Routing

Router A :

Router B : vice versa to Router A References : http://serverfault.com/questions/171551/help-me-understand-the-ip-route-command-for-cisco-routers

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Calculate IP

Address: 11000000.10101000.00000000 .00000001 Netmask: = 24 11111111.11111111.11111111 .00000000 Wildcard: 00000000.00000000.00000000 .11111111 => Network: 11000000.10101000.00000000 .00000000 (Class C) Broadcast: 11000000.10101000.00000000 .11111111 HostMin: 11000000.10101000.00000000 .00000001 HostMax: 11000000.10101000.00000000 .11111110 Hosts/Net: 254 (Private Internet) References : http://jodies.de/ipcalc

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