Created
August 6, 2012 10:49
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iproute2
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iproute commands | |
Prerequisites | |
iproute2 package | |
kernel configure options: | |
CONFIG_IP_ADVANCED_ROUTER=y | |
CONFIG_IP_MULTIPLE_TABLES=y | |
CONFIG_IP_ROUTE_MULTIPATH=y | |
menuconfig path: | |
- Networking --> | |
-- Networking Support --> | |
--- Networking options --> | |
---- TCP/IP networking | |
----- IP: Advanced router | |
----- IP: policy routing | |
----- IP: equal cost multipath | |
Enable IP Forwarding | |
echo "1" > /proc/sys/net/ipv4/ip_forward | |
echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter | |
IP LINK (cmd subset) | |
Show hardware address | |
ip link | |
ip link [show|ls|list|sh] | |
Take an interface up/down | |
ip link set dev (device) up | |
ip link set (device) up | |
ip link set dev (device) down | |
ip link set (device) up | |
Change the MAC address of the interface | |
ip link set dev (device) address (arp address) | |
IP ADDRESS (cmd subset) | |
Show ip address | |
ip addr | |
ip addr [show|sh|list|ls] | |
ip addr show dev eth0 # show specific device | |
Show ip addresses (the old "ifconfig" way) | |
ifconfig -a | |
ifconfig | |
Assign IP address to interface | |
ip addr [add|a] (address)/(mask) dev (device) | |
ex: ip addr add 192.168.1.2/24 dev eth0 | |
Assign IP address to interface (the old "ifconfig" way) | |
ifconfig eth0 192.168.1.2 netmask 255.255.255.0 | |
Remove IP address from interface | |
ip addr [delete|del|d] (address)/(mask) dev (device) | |
ex: ip addr del 192.168.1.2/24 dev eth0 | |
IP NEIGHBOR (cmd subset) | |
Show ip Layer 2 neighbors (arp table) | |
ip neigh | |
Show ip Layer 2 netighbors (the old "arp" way) | |
arp -a | |
Add new ARP mapping | |
ip neigh add 192.168.1.100 dev eth0 lladdr (mac address) | |
ip neigh add 192.168.1.100 dev eth0 lladdr (mac address) nud reachable | |
NUD Statuses | |
--permanent (perm) # administrative mapping | |
--noarp # neighbor valid but no attempt to rearp will be made | |
--reachable # neighbor entry valid until timeout | |
--stale # old arp entry | |
Remove ARP mapping | |
ip neigh del 192.168.1.100 dev eth0 | |
Flush arp table | |
ip neigh flush | |
IP ROUTE (cmd subset) | |
Show ip routing tables | |
ip route | |
Show ip routing tabes (the old "route" way) | |
route | |
Add Static Route | |
ip route add (network)/(mask) via (ip to route through) | |
e.x. ip route add 10.0.0.0/24 via 192.244.7.65 | |
ip route add (network)/(mask) src INTERFACE_IP dev (device) | |
ip route add (network)/(mask) dev (device) protocol static | |
Add Static Route (old "route" method) | |
route add -net 10.0.0.0 netmask 255.255.255.0 dev eth0 | |
Add Default Route | |
ip route add default via GATEWAY_IP | |
Add Default Route (old "route" method) | |
route add default gw 192.168.1.1 | |
Del Route | |
ip route del 10.0.0.0/24 | |
Delete all routes on an interface | |
ip route flush dev eth0 | |
http://www.policyrouting.org/iproute2.doc.html | |
http://gentoo-wiki.com/Dual_internet_connections |
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