06-25-2013
you may be right about the loopback but i cannot say for sure as i do not have access to those kind of machines -- maybe somebody else here can explain further ...
you may also want to see the configurations of the appropriate network devices on your other solaris servers and their appropriate ports on the switch if they are able to send the big files much faster ...
btw, i had my network group actually hard set the affected ports on the switch to run 100/full so my servers' network ports were not continually auto-negotiating ... the standards at that company was also to set every network port to auto but they had to make an exception for my production servers ...
if your network group balks at the request to hard set the ports, call up oracle support to see if they have better ideas if nobody else here has one ...
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LEARN ABOUT POSIX
systemd-networkd.service
SYSTEMD-NETWORKD.SERVICE(8) systemd-networkd.service SYSTEMD-NETWORKD.SERVICE(8)
NAME
systemd-networkd.service, systemd-networkd - Network manager
SYNOPSIS
systemd-networkd.service
/lib/systemd/systemd-networkd
DESCRIPTION
systemd-networkd is a system service that manages networks. It detects and configures network devices as they appear, as well as creating
virtual network devices.
To configure low-level link settings independently of networks, see systemd.link(5).
systemd-networkd will create network devices based on the configuration in systemd.netdev(5) files, respecting the [Match] sections in
those files.
systemd-networkd will manage network addresses and routes for any link for which it finds a .network file with an appropriate [Match]
section, see systemd.network(5). For those links, it will flush existing network addresses and routes when bringing up the device. Any
links not matched by one of the .network files will be ignored. It is also possible to explicitly tell systemd-networkd to ignore a link by
using Unmanaged=yes option, see systemd.network(5).
When systemd-networkd exits, it generally leaves existing network devices and configuration intact. This makes it possible to transition
from the initrams and to restart the service without breaking connectivity. This also means that when configuration is updated and
systemd-networkd is restarted, netdev interfaces for which configuration was removed will not be dropped, and may need to be cleaned up
manually.
CONFIGURATION FILES
The configuration files are read from the files located in the system network directory /lib/systemd/network, the volatile runtime network
directory /run/systemd/network and the local administration network directory /etc/systemd/network.
Networks are configured in .network files, see systemd.network(5), and virtual network devices are configured in .netdev files, see
systemd.netdev(5).
SEE ALSO
systemd(1), systemd.link(5), systemd.network(5), systemd.netdev(5), systemd-networkd-wait-online.service(8)
systemd 237 SYSTEMD-NETWORKD.SERVICE(8)