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Operating Systems AIX AIX server problem - network connection is unstable ! Post 303044802 by Neo on Wednesday 4th of March 2020 06:41:20 AM
Old 03-04-2020
Yes, I understand.

When on a LAN segment you should also realize that every hardware interface to the LAN can have a different characteristic.

Some ethernet cards are more "chatty" and some are less "chatty" and some are "old" and others are "new" and some have drivers / firmware written by "A" and others have drivers / firmware written by "B".

You say "you don't have a lot of knowledge"... that's normal.

So, I am telling you what an experienced network engineer with a lot of knowledge would so.

If I had a busy LAN segment with a lot of devices on the same segment (subnet), as you have indicated, and I had two devices which I wanted to have the best communication speed between them, I would put them on their own LAN segment (subnet) and "be done with it" and maybe "retest" when the two devices are the only two devices (or three if you have a different gateway device) on that segment.
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lanscan(1M)															       lanscan(1M)

NAME
lanscan - display LAN device configuration and status SYNOPSIS
Remarks The and commands are deprecated. See for more information. DESCRIPTION
displays the following information about each LAN device that has software support on the system: o Hardware Path. o Active Station Address (also known as Physical Address). o Card Instance Number o Hardware State. o Network Interface "NamePPA". The Network Interface "Name" and the "PPA" (Physical Point of Attachment) number are concatenated together. A single hardware device may have multiple "NamePPA" identifiers, which indicates multiple encapsulation methods may be supported on the device. For Ethernet/IEEE 802.3 links, the "Name" is used to designate Ethernet encapsulation, and for IEEE 802.3 encapsulation. For other links (FDDI, Token Ring), only the encapsulation designation is used. o Network Management ID. o MAC Type. o HP DLPI Supported. Indicates whether or not the lan device driver will work with HP's Common Data Link Provider Interface. o DLPI Major Number. o Extended Station Address for those interfaces which require more than 48 bits. This is displayed only when the option is selected. o Encapsulation Methods that the Network Interface supports. This is displayed only when the option is selected. Options recognizes the following command-line options: Display station addresses only. No headings. Display interface names only. No headings. Display information about PPAs that are acquired by APA. No headings. Display MAC types only. No headings. Display Network Managements IDs only. No headings. Display PPA numbers only. No headings. Same as except link aggregate PPA's will be followed by a list of LAN interface PPA's that are configured in the corresponding link aggregate. No headings. Verbose output. Two lines per interface. Includes displaying of extended station address and supported encapsulation methods. WARNINGS
does not display information about LAN devices that do not have software support such as LAN interface cards that fail to bind properly at boot-up time. Obsolescence The and commands are deprecated. These commands will be removed in a future HP-UX release. HP recommends the use of replacement command nwmgr(1M) to perform all network interface-related tasks. AUTHOR
was developed by HP. SEE ALSO
ifconfig(1M), ioscan(1M), nwmgr(1M), lanadmin(1M), linkloop(1M), lan(7). TO BE OBSOLETED lanscan(1M)
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