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Oracle Solaris Administration: Network Interfaces and Network Virtualization Oracle Solaris 11 Express 11/10 |
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Oracle Solaris Administration: Network Interfaces and Network Virtualization Oracle Solaris 11 Express 11/10 |
2. NWAM Configuration and Administration (Overview)
3. NWAM Profile Configuration (Tasks)
4. NWAM Profile Administration (Tasks)
5. About the NWAM Graphical User Interface
Part II Administering Single Interfaces
6. Overview of the Networking Stack
7. Datalink Configuration and Administration
8. Configuring an IP Interface
9. Configuring Wireless Interface Communications on Oracle Solaris
Communicating Over WiFi Interfaces
Planning for WiFi Communications
How to Prepare a System for WiFi Communications
How to Set Up an Encrypted WiFi Network Connection
Part III Administering Interface Groups
11. Administering Link Aggregations
Part IV Network Virtualization and Resource Management
15. Introducing Network Virtualization and Resource Control (Overview)
16. Planning for Network Virtualization and Resource Control
17. Configuring Virtual Networks (Tasks)
18. Using Link Protection in Virtualized Environments
19. Managing Network Resources
This section contains tasks for establishing and monitoring WiFi connections for a laptop or desktop computer that runs Oracle Solaris.
The following procedure assumes that you have followed the instructions in How to Prepare a System for WiFi Communications.
For more information, see How to Obtain Administrative Rights in System Administration Guide: Security Services.
# dladm show-link LINK CLASS MTU STATE BRIDGE OVER ath0 phys 1500 up -- -- e1000g0 phys 1500 up -- --
In this example, the output indicates that two links are available. The ath0 link supports WiFi communications. The e1000g link is for attaching the system to a wired network.
Use the following steps to configure the interface:
Create the interface that supports WiFi:
# ipadm create-if ath0
Verify that the link has been plumbed:
# ipadm show-if IFNAME STATE CURRENT PERSISTENT lo0 ok -m-v-----46 --- e1000g ok bm-------46 -46 ath0 ok bm-------46 -46
# dladm scan-wifi LINK ESSID BSSID/IBSSID SEC STRENGTH MODE SPEED ath0 net1 00:0e:38:49:01:d0 none good g 54Mb ath0 net2 00:0e:38:49:02:f0 none very weak g 54Mb ath0 net3 00:0d:ed:a5:47:e0 none very good g 54Mb
The example output of the scan-wifi command displays information about the available WiFi networks at the current location. The information in the output includes:
Link name to be used in the WiFi connection.
Extended Service Set ID. The ESSID is the name of the WiFi network, such as net1, net2, and net3 in the example output.
Basic Service Set ID, the unique identifier for a particular ESSID. The BSSID is the 48-bit MAC address of the nearby access point that serves the network with a particular ESSID.
Type of security that is needed to access the network. The values are none or WEP. For information about WEP, refer to Secure WiFi Communications.
Strength of the radio signals from the WiFi networks that are available at your location.
Version of the 802 .11 protocol that is run by the network. The modes are a, b, or g, or these modes in combination.
Speed in megabits per second of the particular network.
Connect to the unsecured WiFi network with the strongest signal.
# dladm connect-wifi
Connect to an unsecured network by specifying its ESSID.
# dladm connect-wifi -e ESSID
The connect-wifi subcommand of dladm has several more options for connecting to a WiFi network. For complete details, refer to the dladm(1M) man page.
Do either of the following:
Obtain an IP address from a DHCP server.
# ipadm create-addr -T dchp addrobj
where addrobj uses the naming convention interface/user–defined–string.
If the WiFi network does not support DHCP, you receive the following message:
ipadm: interface: interface does not exist or cannot be managed using DHCP
Configure a static IP address:
Use this option if you have a dedicated IP address for the system.
# ipadm create-addr -T static -a address addrobj
# dladm show-wifi LINK STATUS ESSID SEC STRENGTH MODE SPEED ath0 connected net3 none very good g 36Mb
In this example, the output indicates that the system is now connected to the net3 network. The earlier scan-wifi output indicated that net3 had the strongest signal among the available networks. The dladm show-wifi command automatically chooses the WiFi network with strongest signal, unless you directly specify a different network.
Do either of the following, depending on the network to which the system is connected:
If the access point offers free service, you can now run a browser or an application of your choice.
If the access point is in a commercial hot spot that requires a fee, follow the instructions provided at the current location. Typically, you run a browser, supply a key, and give credit card information to the network provider.
Terminate the WiFi session but leave the system running.
# dladm disconnect-wifi
Terminate a particular WiFi session when more than one session is currently running.
# dladm disconnect-wifi link
where link represents the interface that was used for the session.
Cleanly shut down the system while the WiFi session is running.
# shutdown -g0 -i5
You do not need to explicitly disconnect the WiFi session prior to turning off the system through the shutdown command.
Example 9-1 Connecting to a Specific WiFi Network
The following example shows a typical scenario that you might encounter when using a laptop that runs Oracle Solaris in an Internet coffee house.
Learn whether a WiFi link is available.
# dladm show-wifi ath0 type: non-vlan mtu: 1500 device: ath0
The ath0 link is installed on the laptop. Configure the ath0 interface, and verify that it is up.
# ipadm create-if ath0 IFNAME STATE CURRENT PERSISTENT lo0 ok -m-v-----46 --- ath0 ok bm-------46 -46
Display the available WiFi links at your location.
# dladm scan-wifi LINK ESSID BSSID/IBSSID SEC STRENGTH MODE SPEED ath0 net1 00:0e:38:49:01:d0 none weak g 54Mb ath0 net2 00:0e:38:49:02:f0 none very weak g 54Mb ath0 net3 00:0d:ed:a5:47:e0 wep very good g 54Mb ath0 citinet 00:40:96:2a:56:b5 none good b 11Mb
The output indicates that net3 has the best signal. net3 requires a key, for which the provider for the coffee house charges a fee. citinet is a free network provided by the local town.
Connect to the citinet network.
# dladm connect-wifi -e citinet
The -e option of connect-wifi takes the ESSID of the preferred WiFi network as its argument. The argument in this command is citinet, the ESSID of the free local network. The dladm connect-wifi command offers several options for connecting to the WiFi network. For more information, refer to the dladm(1M) man page.
Configure an IP address for the WiFi interface.
# ipadm create-addr -T static -a 10.192.16.3/8 ath0/v4 # ipadm show-addr ADDROBJ TYPE STATE ADDR lo0/v4 static ok 127.0.0.1/8 e1000g0/v4 static ok 129.146.69.34/24 ath0/v4static static ok 10.192.16.3/8 lo0/v6 static ok ::1/128
This example assumes that you have the static IP address 10.192.16.3/24 configured on your laptop.
# dladm show-wifi LINK STATUS ESSID SEC STRENGTH MODE SPEED ath0 connected citinet none good g 11Mb
The output indicates that the laptop is now connected to network citinet.
# firefox
The home page for the Firefox browser displays.
Run a browser or other application to commence your work over the WiFi network.
# dladm disconnect-wifi # dladm show-wifi LINK STATUS ESSID SEC STRENGTH MODE SPEED ath0 disconnected -- -- -- -- --
The output of show-wifi verifies that you have disconnected the ath0 link from the WiFi network.
This procedure shows how to monitor the status of a WiFi link through standard networking tools, and change link properties through the linkprop subcommand.
For more information, see How to Obtain Administrative Rights in System Administration Guide: Security Services.
Use the following syntax:
# dladm show-linkprop interface
For example, you would use the following syntax to show the status of the connection established over the ath0 link:
# dladm show-linkprop ath0 PROPERTY VALUE DEFAULT POSSIBLE channel 5 -- -- powermode off off off,fast,max radio ? on on,off speed 36 -- 1,2,5.5,6,9,11,12,18,24,36,48,54
 | Caution - Oracle Solaris automatically chooses the optimal speed for the WiFi connection. Modifying the initial speed of the link might cause reduced performance or prevent the establishment of certain WiFi connections. |
You can modify the link speed to one of the possible values for speed that is listed in the show-linkprop output.
# dladm set-linkprop -p speed=value link
# netstat -I ath0 -i 5 input ath0 output input (Total) output packets errs packets errs colls packets errs packets errs colls 317 0 106 0 0 2905 0 571 0 0 14 0 0 0 0 20 0 0 0 0 7 0 0 0 0 16 0 1 0 0 5 0 0 0 0 9 0 0 0 0 304 0 10 0 0 631 0 316 0 0 338 0 9 0 0 722 0 381 0 0 294 0 7 0 0 670 0 371 0 0 306 0 5 0 0 649 0 338 0 0 289 0 5 0 0 597 0 301 0 0
Example 9-2 Set the Speed of a Link
This example shows how to set the speed of a link after you have connected to a WiFi network
# dladm show-linkprop -p speed ath0 PROPERTY VALUE DEFAULT POSSIBLE speed 24 -- 1,2,5,6,9,11,12,18,24,36,48,54 # dladm set-linkprop -p speed=36 ath0 # dladm show-linkprop -p speed ath0 PROPERTY VALUE DEFAULT POSSIBLE speed 36 -- 1,2,5,6,9,11,12,18,24,36,48,54
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