Brook is software router for erlang.
Brook provide arp protocol, ip protocol and icmp protocol. You can implement basic routing and also configure static routing.
add static route
destination ip : {192, 168, 30, 0}
destination subnetmask : {255, 255, 255, 0}
next hop ip : {255, 255, 255, 0}
out interface : "eth1"
brook_ip:route(add, static, {192, 168, 30, 0}, {255, 255, 255, 0}, {192,168, 40, 20}, "eth1").
brook route control show atom. print routing table example.
{
routing_table, % record name
s, % add routing table, source route
{192,168,30,0}, % destination route
3232243200, % destination route integer
{255,255,255,0}, % destination route subnet mask
4294967040, % destination route subnet mask integer
1, % administrative distance
0, % metric
{192,168,40,20}, % next hop ip address
0, % learng time
"eth1" % out put interface
}
> brook_ip:route(show).
[{routing_table,s,
{192,168,30,0},
3232243200,
{255,255,255,0},
4294967040,1,0,
{192,168,40,20},
0,"eth1"},
{routing_table,c,
{10,0,2,0},
167772672,
{255,255,255,0},
4294967040,0,0,directory_connected,0,"eth0"},
{routing_table,c,
{192,168,20,0},
3232240640,
{255,255,255,0},
4294967040,0,0,directory_connected,0,"eth1"}]
print direct connect routing table.
put c or connect as the second argument
> brook_ip:route(show, c).
[{routing_table,c,
{10,0,2,0},
167772672,
{255,255,255,0},
4294967040,0,0,directory_connected,0,"eth0"},
{routing_table,c,
{192,168,20,0},
3232240640,
{255,255,255,0},
4294967040,0,0,directory_connected,0,"eth1"}]
put s or static as the second argument
> brook_ip:route(show, s).
[{routing_table,s,
{192,168,30,0},
3232243200,
{255,255,255,0},
4294967040,1,0,
{192,168,40,20},
0,"eth1"}]