Monday, May 4, 2009

AIX - Network - Remove IP Address

AIX - Network - Remove IP Address

Using ifconfig command we can remove network interface from network list
#ifconfig en0 detach (Removes en0 card from the network interface list)

Sunday, May 3, 2009

AIX - Network - Enable IP address

Enable IP address

#ifconfig en0 up (Turns on network card en0)

AIX - Network - Disable IP address

AIX - Network - Disable IP address

Using ifconfig command we can disable the IP address
#ifconfig en0 down (Turns off network card en0)

AIX - Network - Assign IP address to NIC

Assign IP address to NIC

Using mktcpip or smitty tcpip command we can assign IP address to NIC

#smitty tcpip

It will ask following details

Hostname –
IP address –
Subnet mask –
DNS server –
DNS Server name –
Gateway –
#
Or
#ifconfig en0 inet 192.168.1.1 netmask 255.255.255.0 up (Configure en0 starts Immediately)


After finishing this process ip address assigned to NIC

Or

We can assign one more IP address to same network card

#ifconfig en0 192.168.1.33 alias (adding alias IP to en0)
#ifconfig –en0 192 168.1.33 –alias (Removing alias IP from en0)

AIX - Network - NIC Configuration

AIX - Network - NIC Configuration

Using cfgmrg command we can configure to server

Cfgmgr command is device management related command. If we want to install new network card, first we should connect network in server. While booting the server boot process is starting the cfgmrg, so that time network card will be installed in server.

We have installed Ethernet card 1.

That Ethernet card is divided into three parts

Ent0 – Physical adapter
En0 – Logical name
Et0 – Architecture of the card (802.3)

Or

Using mkinet command we can install the NIC

AIX -NETWORK

The below are the activities performed in NETWORK:

1. NIC Configuration
2. Assign IP address to NIC
3. Disable IP address
4. Enable IP address
5. Remove IP address
6. Check the NIC IP status
7. Check the NIC device status
8. Check the network statistics
9. To change HOST name
10. Trace the HOST
11. Assign gateway to network
12. Clear the gateway table

Saturday, May 2, 2009

AIX - Refresh (restart) Daemon

AIX - Refresh (restart) Daemon

Using refresh command we can restart the daemon

#refresh –g nfs (restart the group of subsystems)
#refresh –s rpc.statd (restart the single subsystems)

Like this we can restart the daemons,

AIX - Stop Daemon

AIX - Stop Daemon

Using stopsrc command we can stop the daemon,If we want to stop nfs daemon, then your command will be

#stopsrc –g nfs

Nfsd – stopped
Biod – stopped
Rpc.mountd – stopped
Rpc.lockd – stopped
Rpc.statd – stopped

Or we can stop single subsystem using –s flag

#stopsrc –s nfsd
Nfsd – stopped, like this we can stop the daemons

AIX - List Daemon

AIX - List Daemon

Using lssrc command we can list the daemons

If we want see check status of the nfs daemon, whether subsystems are started or not.
Execute the following command.
#lssrc –g nfs

Nfsd – started
Biod – started
Rpc.mountd – not started
Rpc.lockd – started
Rpc.statd – not started

Or we can check single subsystem status using

#lssrc –s nfsd
Nfsd - started

NOTE:
#lssrc –a

The above command list the status of all the daemons, like this we can list and check the status of the daemons

AIX - Start daemon

AIX - Start daemon

Using srcstart command we can start the daemon.Actually nfs daemon has 5 subsystems (services), when you configured nfs in server, that 5 subsystems are always start state. If one subsystem is not working properly or not started, then the nfs is not working properly.

Nfs daemons:

Server: 1. nfsd, 2. rpc.mountd

Client: 3.biod, 4. rpc.statd, 5. rpc.lockd

If clients are not able to access the network file system from the server, that time you have to start or restart the nfsd and rpc.mountd subsystems.

#startsrc –s nfsd
#startsrc –s rpc.mountd

Flag –s is mentioned for single, because we are starting single nfsd subsystem

If we want start complete nfs daemons using –g flag

#startsrc –g nfs
Nfsd – started
Biod – started
Rpc.mountd – started
Rpc.lockd – started
Rpc.statd – started
#
The above command is start all the 5 subsystems at the same time, but it is not recommended.
Like this we start single subsystem or group of subsystems.