Minggu, 18 September 2016

View and Setting Network Settings of an Ethernet Adapter Linux

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1. View Network Settings of an Ethernet Adapter

Ifconfig, when invoked with no arguments will display all the details of currently active interfaces. If you give the interface name as an argument, the details of that specific interface will be displayed.
# ifconfig eth0

eth0   Link encap:Ethernet  HWaddr 00:2D:32:3E:39:3B
inet addr:  Bcast:  Mask:
inet6 addr: fe80::21d:92ff:fede:499b/64 Scope:Link
RX packets:977839669 errors:0 dropped:1990 overruns:0 frame:0
TX packets:1116825094 errors:8 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2694625909 (2.5 GiB)  TX bytes:4106931617 (3.8 GiB)
Interrupt:185 Base address:0xdc00

2. Display Details of All interfaces Including Disabled Interfaces

# ifconfig -a

3. Disable an Interface

# ifconfig eth0 down

4. Enable an Interface

# ifconfig eth0 up

5. Assign ip-address to an Interface

Assign as the IP address for the interface eth0.
# ifconfig eth0

Change Subnet mask of the interface eth0.
# ifconfig eth0 netmask

Change Broadcast address of the interface eth0.
# ifconfig eth0 broadcast

Assign ip-address, netmask and broadcast at the same time to interface eht0.
# ifconfig eth0 netmask broadcast

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