sysback help needed !

hi all,
i'm doing an test restore of rootvg from TSM via classic network boot
the communication is fine and everything seems okay except this ...
it simply hangs on following ...

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BOOTP: chosen-network-type = ethernet,auto,rj45,auto
BOOTP: server   IP =        10.243.122.10
BOOTP: requested filename =
BOOTP: client   IP =        10.243.166.9
BOOTP: client   HW addr =   0 11 25 7e 4 4e
BOOTP: gateway  IP =        10.243.166.1
BOOTP: device    /pci@800000020000002/pci@2/ethernet@1
BOOTP: loc-code  U789A.001.AAA1094-P1-T1

BOOTP: wait 60 seconds for Spanning Tree ...

BOOTP R = 1 BOOTP S = 2
FILE: /tftpboot/axtprov2

BOOTP: chosen-network-type = ethernet,auto,rj45,auto
BOOTP: server   IP =        10.243.122.10
BOOTP: requested filename =
BOOTP: client   IP =        10.243.166.9
BOOTP: client   HW addr =   0 11 25 7e 4 4e
BOOTP: gateway  IP =        10.243.166.1
BOOTP: device    /pci@800000020000002/pci@2/ethernet@1
BOOTP: loc-code  U789A.001.AAA1094-P1-T1

BOOTP: wait 60 seconds for Spanning Tree ...

BOOTP R = 1 BOOTP S = 2
FILE: /tftpboot/axtprov2
FINAL Packet Count = 16673
FINAL File Size = 8536286 bytes.
load-base=0x4000
real-base=0xc00000

Elapsed time since release of system processors: 16 mins 27 secs







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                               Welcome to AIX.
                      boot image timestamp: 07:39 03/30
                The current time and date: 10:59:09 03/30/2006
               number of processors: 2    size of memory: 3936Mb
boot device:
/pci@800000020000002/pci@2/ethernet@1:10.243.122.10,,10.243.166.9,10.243.166.1,00,00
closing stdin and stdout...
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in documentation it clearly says that restored server has to be the same OS
version for starting network boot,
but i don't get it, the restored server just neeeds the boot image, no ? the
bootp server is AIX 5.2 and the restored server is p505 with AIX 5.3
is/should be restored, the sysback backups went fine with no problems at
all, i tested the restore with one old B50 server with AIX 5.2 and
everything went fine, i'm suspicious about network connectivity but the
firewall was allowed for ping,bootps,bootpd,1500,1023,1022,1239,tftpd ...

i general i suspect that bootimage on AIX 5.2 server the BOOTP server is not
okay for this kind of server with AIX 5.3 which is the one he needs, can be
? the boot image is created like this ...

/usr/sbin/mksbnetboot  -h'axtprov2' -d'ethernet' '-T chrp' '-k
mp' -S'10.243.122.10'

with no problems :-|

any help would be GREATELY appreciated !!!

any clue ?

TIA

goran