en0 en1 ent0 ent1

[promotor]

hello,

could someone differentiate these things for me, like what's the purpose of en0 if there's ent0 and even en0. thanks

 

[Boria]

Hi,
'en' - standart ethernet protocol.
'et' - IEEE 802.3 ethernet protocol.

Use 'en'.

Regards Boris

 

[DSMARWAY]

hi,

en0 - shows you the ip addresses , subnet mask etcc use lsattr -El en0 . You use this to add ip address

ent - shows / sets the hardware settings on the card
lsattr -El ent0 ( sets speed , mac adress etc..)e.g. normally use this to change say speed if card from auto to 100MB full

HTH

 

[Yegolev]

another way to look at it is that en0 is the interface or driver (smit tcpip), while ent0 is the adapter or hardware (smit ethernet).

IBM Certified -- AIX 4.3 Obfuscation

 

[nboynoble]

Hello,

I have just installed a 10/100 Ethernet PCI Network Adapter card into an RS6000 model 140. The onboard adapter is already configured (ip address etc). The new device is listed in (smit - list devices) but I don't seem to be able to configure it or instruct the other tcpip settings to use the new interface card.

Any help would be appreciated.

 

[victorv]

hi nboynoble,

a machine with 2 nics, creates always some problems.

Remeber a thing: also if you have 10 network cards
with 10 different IPaddr, or more than 1 ipaddr on a nic
(called alias in AIX),

your machine has just 1 hostname.

Then, if you can configure the 1st nic by :

smitty mktcpip

end choose en0
enter hostname and ip params,

you cannot use this for the second.

(Think in Windows: ComputerName and Lan Configurations
are in different points on desktop)

For the 2nd nic use: smitty inet
is similar but does not ask you for hostname.

Be carefull: smitty mktcpip, put entries in /etc/hosts
and does not leave this correct. You can find in it
duplicate rows with same hostname an different ip or
viceversa.

If you are "in panne", follow these:

- ensure that 2nd nic has a right driver from AIX cd
- remove bad entries in /etc/hosts
- smitty inet
Remove a Network Interface
remove all ( should be 4 )

- insert cd1 of AIX
- smitty cfgmgr
choose by F4 /dev/cd0 as INPUT device
fire
- smitty mktcpip ( for 1st nic )
- smitty inet ( for 2nd nic )
- have a look at /etc/hosts

- warning at the routing tables:
a nic on net B ( 192.168.2.0 - FFFFFF00) cannot
way out packets from the Default Gateway 192.168.1.251
of the net net A ( 192.168.1.0 - FFFFFF00)


bye

 

[kurtwagner]

Good post - it does not sound like you can configure
two network adapters with the same ip address in AIX?

Is this true?

Kurt

 

[franksoprano]

Why would you want to configure two ent's with the same IP address? It is very simple to setup multiple interfaces in AIX.

 

[bichito]

With two network interface cards, you can configure a Virtual Interface (VIPA), or an etherchannel in port aggregation or backup mode (mi favourite).

In AIX 5L 5.2 Doc CD See System Management Guide: Communications and Networks -> Transmission Control Protocol / Internet Protocol -> VIPA / Etherchannel