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To be more faster for the sftp transfer files between two AIX servers

You have not mentioned if you were using a dedicated private lan for this purpose: When I was stil working, all my servers (AIX, HP-UX, SOLARIS) were configured with a minimum of 2 networks, the second called technical, for backups and fast transfer, because very difficult to get good performance on production Lan where users and DB request compete with high data volume...


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To be more faster for the sftp transfer files between two AIX servers

Your interface MTU is still 1500, so those larger pings are being fragmented. That does not confirm jumbo frames are enabled end-to-end.

For 100–300KB/s, I would next check:

Interface speed/duplex on both sides: entstat -d ent0 | egrep -i "Speed|Duplex|Media|Link" entstat -d en0 | egrep -i "Speed|Duplex|Media|Link" TCP retransmits/errors: netstat -s | egrep -i...

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To be more faster for the sftp transfer files between two AIX servers

Thank you for your reply.

destination_server
lsattr -El en2 -a mtu
mtu 1500 Taille max de paquet IP pour cette unit▒ True

source server
lsattr -El en0 -a mtu
mtu 1500 Maximum IP Packet Size for This Device True

ping -c 3 -s 8972 -I ping -c 3 -s 8972 -I <source_ip> <destination_ip>
PING destination_ip (destination_ip): 8972 ...


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To be more faster for the sftp transfer files between two AIX servers
LAMJED:

Is there any other config to check

Check jumbo frames, MTU settings.


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To be more faster for the sftp transfer files between two AIX servers

result of entstat -d ent0 :
Receive Buffers
Buffer Type Tiny Small Medium Large Huge
Min Buffers 512 512 128 24 24
Max Buffers 2048 2048 256 64 64
Allocated 512 512 128 24 24
Registered 512 512 128 24 24
History
Max Allocated 512 761 128 24 24
Lowest Registered 511 502 128 24 24

**
result of ifconfig ent0 :
tcp_sendspace 1048...


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