We have ahost with the only external IP-address. We want to install many non-global zones to buld the system and to port packages or for other services. The crossbow helps us to solve this problem. Let’s look at the diagram of the host:
In this host we have a physical NIC atge which connected to an external hardware switch. A virtual interface ext0 (VNIC) was created over the physical NIC (for example, to make a tagged packets). Let’s see at the real example:
lenovo# dladm show-link LINK CLASS MTU STATE BRIDGE OVER atge0 phys 1500 up -- --
Create an extenal VNIC over the physical device:
lenovo# dladm create-vnic -l atge0 ext0
Let’s see the result:
lenovo# dladm show-link LINK CLASS MTU STATE BRIDGE OVER atge0 phys 1500 up -- -- ext0 vnic 1500 up -- atge0
Now configure the new VNIC as a regular network interface. Just create a file /etc/hostname.ext0 like this:
lenovo# cat /etc/hostname.ext0 192.168.0.3 netmask 255.255.255.0 broadcast + up
Create /etc/defaultrouter file and specify a default gateway like this:
lenovo cat /etc/defaultrouter 192.168.0.1
Now you can reconfigure the network, just restart the service network/physical:
lenovo# svcs network/physical STATE STIME FMRI disabled 9:48:02 svc:/network/physical:nwam online 9:48:11 svc:/network/physical:default lenovo# svcadm restart svc:/network/physical:default lenovo# svcs network/physical STATE STIME FMRI disabled 9:48:02 svc:/network/physical:nwam online 11:02:04 svc:/network/physical:default
You will see something like this:
lenovo# ifconfig
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
ext0: flags=1004843<UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 1500 index 2
inet 192.168.0.3 netmask ffffff00 broadcast 192.168.0.255
ether 2:8:20:f9:ec:e5
lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1
inet6 ::1/128
lenovo# netstat -rnf inet
Routing Table: IPv4
Destination Gateway Flags Ref Use Interface
-------------------- -------------------- ----- ----- ---------- ---------
default 192.168.0.1 UG 2 0 ext0
127.0.0.1 127.0.0.1 UH 2 28 lo0
192.168.0.0 192.168.0.3 U 4 60 ext0
Alternatively you can do it manually:
lenovo# ifconfig ext0 plumb lenovo# ifconfig ext0 inet 192.168.0.3/24 up lenovo# route add default 192.168.0.1
But… This is a temporary solution, it works until you reboot the system. You can use this method to access the system via ssh and then to configure the network permanently.
Now the global zone has configured partially, it means that we need second VNIC to do NAT for the non-global zones.