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Networking General
- Routing
- IP/Netmask calculator - very useful little tool.
RHEL/CentOS
Disable IPv6
If you are not ready for IPv6 on your network you may find significant performance gains by disabling it on your servers as it will prevent precious wasted cycles attempting to perform IPv6 lookups. Contrary to some reports, simply following step 1 below will not work. You need at the very least to edit the modprobe.conf file as well.
1. Edit /etc/sysconfig/network as follows:
NETWORKING_IPV6=no
2. Edit /etc/modprobe.conf and add the following:
alias net-pf-10 off alias ipv6 off
3. Disable the ip6tables service using chkconfig:
chkconfig ip6tables off
4. To stop the service without rebooting just stop the daemon:
/etc/init.d/ip6tables stop
Network Equipment
Allied Telesyn
Useful notes if you are unfortunate enough to have to deal with the frightful Allied Telesyn AR440s router
