Full duplex on 4.2.1 2

[unixfreak]

Hi, on AIX 4.2.1 how do I tell if an ethernet adapter is set to 100FD and indeed if it's running it?

 

[mrn]

Plug it into a managed switch and see what it connects as.

Mike

"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."

http://www.airport-parking-site.co.uk/

 

[Gloups]

Try lsattr -El entX | grep media_speed

 

[tempest92]

try looking at entstat

 

[Pinho]

If you need to change it, try:
chdev -l 'ent0' -a media_speed='100_Full_Duplex'
Where:
ent0 = Device that you want to change;
media_speed = 10_Full_Duplex, 10_Half_Duplex, 100_Full_Duplex, 100_Half_Duplex and Auto_Negotiation


Luis Henrique Pinho
No Orkut - Unix Brasil

http://www.orkut.com/Community.aspx?cmm=678135

 

[kozlow]

entstat -d entX | grep -i speed

If the speed is set to 100 full....

Media Speed Selected: 100 Mbps Full Duplex
Media Speed Running: 100 Mbps Full Duplex

If you default to autoneg...

Media Speed Selected: Auto negotiation
Media Speed Running: 100 Mbps Full Duplex

Careful setting the adapter to autoneg and the switch is set to 100 Full. It will cause performance problems...

 

[unixfreak]

mrn: That's never going to work reliably.

I wonder if any of you actually read my post? None of your suggested command actually work. On AIX 5.X yes but not of much use to me.

 

[mrn]

Unixfreak,

It's as good an idea as any, considering the amount of time 4.2.1 has been out of support you shouldn't be so harsh in your criticism of the folks here trying to offer you help.





Mike

"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."

http://www.airport-parking-site.co.uk/

 

[unixfreak]

Wasn't criticising just wondering. I should have been more specific on the 4.2.1 part then...

 

[RodKnowlton]

unixfreak,

An added caveat: stay away from the Auto_Negotiation setting. For certain combinations of cards and switches, it doesn't work correctly.



Rod Knowlton

IBM Certified Advanced Technical Expert pSeries and AIX 5L
CompTIA Linux+
CompTIA Security+

 

[mrn]

The 4.2.1 was specific enough (For me anyway), I think people just tend to forget that the tools they use today were not available in previous versions. Nothing wrong with a bit of criticism in the right place

Mike

"A foolproof method for sculpting an elephant: first, get a huge block of marble, then you chip away everything that doesn't look like an elephant."

http://www.airport-parking-site.co.uk/

 

[kozlow]

Have no 4.2 systems to even give it a try.... Sorry....

Is there a reason you can't upgrade?

Will not help you, but I will be impossible to get any help or support....

My suggestion works at 4.3, which is old enouph...

Sorry... This may be one of the "You can't get there from here"

The do not run autoneg is very true at 4.2. We had to hard code all the servers back then. We now standardize at autoneg.

Happy hunting.

 

[DukeSSD]

Not an answer to the thread question .... but ...
Up to about 5.2! I'd say fix the card and the switch speed.
Auto, even on 5.3, is subject to so many (old) switches that the safest is to fix anything (even gigabit, now 5.2 and 5.23 can set/force gigabit negotiation).

 

[unixfreak]

Kozlow said:

> Is there a reason you can't upgrade?

Yes, I work for a bank.