Networking Blog

Recently, i came accross the name keyword in the ip route command in Cisco IOS.
The CLI help is quite misleading:

router(config)# ip route 1.1.1.1 255.255.255.255 2.2.2.2 ?
  <1-255>    Distance metric for this route
  name       Specify name of the next hop
  permanent  permanent route
  tag        Set tag for this route
  track      Install route depending on tracked item
  [...]

IP routing/forwarding is disabled per default in Debian.
For enabling on the fly, you only have to write “1″ in /proc/sys/net/ipv4/ip_forward or to set the kernel parameter net.ipv4.ip_forward to “1″.

Method #1:
echo 1 > /proc/sys/net/ipv4/ip_forward
Method #2:
sysctl -w net.ipv4.ip_forward=1

The actual setting can be checked as following:

debian:~# sysctl net.ipv4.ip_forward
net.ipv4.ip_forward = 1
debian:~# cat /proc/sys/net/ipv4/ip_forward
1
debian:~#

If you want permanent setting, the most [...]