Multiple IP addresses on one NIC and Multiple internet connections on one nic: Difference between revisions
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post-up ip route add default via 82.94.91.65 table sdsl | post-up ip route add default via 82.94.91.65 table sdsl | ||
post-up ip rule add from 82.94.91.64/28 table sdsl | post-up ip rule add from 82.94.91.64/28 table sdsl | ||
post-down ip rule del from 82.94.91.64/28 table sdsl | post-down ip rule del from 82.94.91.64/28 table sdsl | ||
post-up ip addr add 188.204.140.196/27 brd 188.204.140.223 dev eth0:1 label eth0:1 | post-up ip addr add 188.204.140.196/27 brd 188.204.140.223 dev eth0:1 label eth0:1 | ||
post-up ip route add 188.204.140.192/27 dev eth0 src 188.204.140.196 table fibre | post-up ip route add 188.204.140.192/27 dev eth0 src 188.204.140.196 table fibre | ||
post-up ip route add default via 188.204.140.193 table fibre | |||
post-up ip rule add from 188.204.140.192/27 table fibre | post-up ip rule add from 188.204.140.192/27 table fibre | ||
post-down ip rule del from 188.204.140.192/27 table fibre | post-down ip rule del from 188.204.140.192/27 table fibre | ||
post-down ip addr del 188.204.140.196 dev eth0:1 | post-down ip addr del 188.204.140.196 dev eth0:1 |
Revision as of 14:11, 4 August 2010
isp isps nic ip alias ip aliasing multiple ips on one nic
Multiple Connections to the Internet / two isps on one nic
/etc/shorewall/interfaces
net eth0 82.94.91.79,188.204.140.224 routeback
/etc/iproute2# cat rt_tables # # reserved values # 255 local 254 main 253 default 0 unspec # # local # #1 inr.ruhep 82 sdsl 188 fibre ip route add 82.94.91.64/28 dev eth0 src 82.94.91.77 table sdsl ip route add default via 82.94.91.65 table sdsl ip rule add from 82.94.91.64/28 table sdsl ip route add 188.204.140.192/27 dev eth0 src 188.204.140.196 table fibre ip route add default via 188.204.140.193 table fibre ip rule add from 188.204.140.192/27 table fibre to check: ip rule show ip route list table fibre ip route list table sdsl
or in /etc/network/interfaces
auto eth0 iface eth0 inet static address 82.94.91.77 netmask 255.255.255.240 #netmask 255.255.255.255 network 82.94.91.64 broadcast 82.94.91.79 gateway 82.94.91.65 dns-nameservers 213.75.63.36 194.109.9.99 212.61.33.42 194.109.6.66 post-up ip route add 82.94.91.64/28 dev eth0 src 82.94.91.77 table sdsl post-up ip route add default via 82.94.91.65 table sdsl post-up ip rule add from 82.94.91.64/28 table sdsl post-down ip rule del from 82.94.91.64/28 table sdsl post-up ip addr add 188.204.140.196/27 brd 188.204.140.223 dev eth0:1 label eth0:1 post-up ip route add 188.204.140.192/27 dev eth0 src 188.204.140.196 table fibre post-up ip route add default via 188.204.140.193 table fibre post-up ip rule add from 188.204.140.192/27 table fibre post-down ip rule del from 188.204.140.192/27 table fibre post-down ip addr del 188.204.140.196 dev eth0:1
More information:
http://linux-ip.net/html/adv-multi-internet.html#ex-adv-multi-internet-outbound-ip-routing
http://www.policyrouting.org/iproute2.doc.html#ss9.5
ip address management with ip addr - http://linux-ip.net/html/tools-ip-address.html#tb-tools-ip-addr-scope
ip addr add 188.204.140.195/27 brd 188.204.140.223 dev eth1 label eth1:1
A lot on policy routing - http://www.policyrouting.org/iproute2.doc.html#ss9.5
ip link list - shows the physical devices
ip addr list - shows the adressees the links have
ip addr show dev eth0
Basic ip route - http://linux-ip.net/html/tools-ip-route.html
ip route list - like netstat -rn
/etc/iproute2/rt_tables - contains the routing tables
ip route show table local / main - shows the specified table
ip -s route show cache
ip route flush cache
NB - ip route flush kills all the routing tables!!!
More on routing tables - http://linux-ip.net/html/routing-tables.html
eth0 82.94.91.77
eth0:0 188.204.140.196/27