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connectivity problem after mksysb install on different host

Posted on 2012-03-26
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Last Modified: 2012-03-28
hi,
i have a p550 running oracle other aix 5.3 on full partition system and we need to create a backup server with the same config on another p550 with lpars . i used a mksysb install to install one of the lpar. but after install i 'm not able to ping the new install lpar even when i tried to change the ip address with smit tcpip on en0. i'm able to login trough the HMC . last solution i tried it's to reinstall the lpar with an Aix 5.3 dvd. but i faced the same connectivity problem
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Question by:desmoug
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6 Comments
 
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Expert Comment

by:woolmilkporc
ID: 37768597
I'm rather sure that due to changed hardware location codes ent0 (en0) is no longer available to your system.

You should have got a new interface, probably ent1.

Check with

lsdev -Ccadapter

and use the entx (enx) interface which appears as "Available" to define your IP address.

You'll see that ent0 is still there, but does appear as "Defined".

wmp
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by:woolmilkporc
ID: 37770191
If the above is not the cause for your issue:

- Is the LPAR's network connected over VIO (l-lan)?

If so, did you specify the correct VLAN ID for the virtual adapter while configuring the LPAR (HMC or IVM)?

- Or does the LPAR use real adapters?

If so, did you attach the correct slot and is the adapter in this slot indeed physically connected to the network?
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Author Comment

by:desmoug
ID: 37770743
my LPAR's use real ethernet  adapter ( allow as desired) . and it's physically connected to network  ( i got the server with an aix 5.3 installed on it and after connect it to the network and config the adapter it was running smoothly before i run my mksysb install).
the output for lsdev -Cc adapter is :

[ root@training2.serv2 / ]lsdev -Cc adapter
ent0  Available  01-00 2 ports Gigabit Ethernet-SX PCI-Express adapter (14103f03)
ent1  Available 01-01 2 ports Gigabit Ethernet-SX PCI-Express adapter (14103f03)fcs0  
ent2 Available  logical hosts ethernet port (lp-hea)
fcs0 Available 00-08 FC adapter
fcs1 Available 00-09 FC adapter
lhea0 available logical hosts ethernet port (lp-hea)

vsa0  Available       LPAR virtual serial adapter

vscsi0 Available 1Z-08 Contrôleur d'E-S SCSI Wide/Ultra-3
vscsi1 Available 1Z-09 Contrôleur d'E-S SCSI Wide/Ultra-3
vsa0  Available       Adaptateur série virtuel LPAR



NB: find attached some screen shot:
Commandes.docx
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LVL 68

Accepted Solution

by:
woolmilkporc earned 2000 total points
ID: 37770821
Ben,

looks good so far.

You have two ports on your adapter. Are you sure that you're configuring the one which is actually connected to the network?

Another cause could be VLAN. Does your switch indeed expect untagged packets, and if so, is the switch port enabled for the VLAN (if any) over which you're attempting to communicate?
On the other hand, if your switch expects tagged packets you'll have to create a VLAN device over the real device first.

Sorry for asking: Are you sure that you're using the correct address, mask and gateway?

By the way, I think you should change the slot in the LPAR config to "required", because I'm sute that the LPAR would be quite unuseable without an attached NIC.

Bonne chance,

wmp

------------------

Seems you edited your Q in the meantime, so one more:

What are you trying to do with the LHEA (ent2)?

This one doesn't work, because it hasn't been set up in the HMC yet, as it seems.
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Author Comment

by:desmoug
ID: 37775537
right !! i think it's an issue with config on HMC. but i got an mksysb copy ( of the faulty LPAR's) from backup team , i reinstall it , and everything is ok now. please give me more information about LHEA for further maintenance. thank.
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Expert Comment

by:woolmilkporc
ID: 37776018
I think you should read this first, in order to get a basic understanding of what HEA actually is:
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/index.jsp?topic=/iphat/iphathea.htm

And here is a fine Redbook on that topic:
http://www.redbooks.ibm.com/redpapers/pdfs/redp4340.pdf

(IVE is the old, now obsolete term for HEA)

Should you have further questions afterwards, please don't hesitate to ask!

wmp
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