Configure Host-Side Networking - Lenovo ThinkSystem DE Series Hardware Installation And Maintenance Manual

Port setting
Enable VLAN support
(Available by clicking Show
more settings.)
Enable ethernet priority
(Available by clicking Show
more settings.)
Step 11. Click Finish.
Step 12. Close System Manager.

Configure host-side networking

You configure iSCSI networking on the host side by setting the number of node sessions per physical path,
turning on the appropriate iSCSI services, configuring the network for the iSCSI ports, creating iSCSI face
bindings, and establishing the iSCSI sessions between initiators and targets.
In most cases, you can use the inbox software-initiator for iSCSI CNA/NIC. You do not need to download the
latest driver, firmware, and BIOS. Refer to the Interoperability Matrix document to determine code
requirements.
Check the node.session.nr_sessions variable in the /etc/iscsi/iscsid.conf file to see the default
Step 1.
number of sessions per physical path. If necessary, change the default number of sessions to one
session.
node.session.nr_sessions = 1
Change the node.session.timeo.replacement_timeout variable in the /etc/iscsi/iscsid.conf file to
Step 2.
20, from a default value of 120.
node.session.timeo.replacement_timeout=20
Step 3. Make sure iscsid and (open-)iscsi services are on and enabled for boot. Red Hat Enterprise Linux
7 (RHEL 7)
# systemctl start iscsi
# systemctl start iscsid
# systemctl enable iscsi
# systemctl enable iscsid
SUSE Linux Enterprise Server 12 (SLES 12)
# systemctl start iscsid.service
# systemctl enable iscsid.service
Step 4. Get the host IQN initiator name, which will be used to configure the host to an array.
# cat /etc/iscsi/initiatorname.iscsi
Step 5. Configure the network for iSCSI ports:
Note: In addition to the public network port, iSCSI initiators should use two NICs or more on
separate private segments or vLANs.
a. Determine the iSCSI port names using the # # i i f f c c o o n n f f i i g g - - a a command.
b. Set the IP address for the iSCSI initiator ports. The initiator ports should be present on the
same subnet as the iSCSI target ports.
Description
Important: This option is only available in an iSCSI environment.
Select this option to enable a VLAN and enter its ID. A VLAN is a logical
network that behaves like it is physically separate from other physical and
virtual local area networks (LANs) supported by the same switches, the same
routers, or both.
Important: This option is only available in an iSCSI environment.
Select this option to enable the parameter that determines the priority of
accessing the network. Use the slider to select a priority between 1 and 7.
In a shared local area network (LAN) environment, such as Ethernet, many
stations might contend for access to the network. Access is on a first-come,
first-served basis. Two stations might try to access the network at the same
time, which causes both stations to back off and wait before trying again.
This process is minimized for switched Ethernet, where only one station is
connected to a switch port.
.
Chapter 2 System setup and configuration
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