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PRIMECLUSTER Global Link Services Configuration and AdministrationGuide 4.3Redundant Line Control Function
Chapter 3 Environment configuration > 3.2 System Setup > 3.2.2 Network configuration
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3.2.2 Network configuration

3.2.2.1 Setup common to modes

(1) Physical interface settings

Set up physical interfaces. The physical interface settings vary depending on redundant network methods and operating system.

See the following Table 3.8 Physical interface settings.

Table 3.8 Physical interface settings

Redundant network methods

Operating system

RHEL5/RHEL6

Tagged VLAN disabled

Tagged VLAN enabled

Fast switching mode (IPv4)

Setup 1

Setup 3

Fast switching mode (IPv6)

Setup 2

Setup 4

Fast switching mode (Dual)

Setup 1

Setup 3

NIC switching mode (IPv4)

Primary interface

Setup 1

Setup 3

Secondary interface

Setup 2

Setup 4

NIC switching mode (IPv6)

Primary interface

Setup 2

Setup 4

Secondary interface

Setup 2

Setup 4

NIC switching mode (Dual)

Primary interface

Setup 1

Setup 3

Secondary interface

Setup 2

Setup 4

Virtual NIC mode

Setup 5

Setup 5

GS linkage mode

Setup 1

Not supported

Note

When a operating system is RHEL5 or RHEL6, to specify "HWADDR=XX:XX:XX:XX:XX:XX" for the GLS physical interface settings (the "/etc/sysconfig/network-scripts/ifcfg-ethX" file), add "HOTPLUG=no" to the settings. When the system is RHEL5, edit /etc/udev/rules.d/60-net.rules file, /etc/hotplug/net.agent file or /etc/udev/rules.d/31-network.rules file to invalidate the network hotplug function of the interface (sha*,eth*.*).

Information

If "HOTPLUG=no" is set when the operating system is RHEL5 or RHEL6, it will not disable the PCI Hot Plug. Active maintenance of NIC (PCI cards) can be performed for the physical interface where "HOTPLUG=no" is set.

Setup 1

/etc/sysconfig/network-scripts/ifcfg-ethX

DEVICE=ethX
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
BROADCAST=XXX.XXX.XXX.XXX
IPADDR=XXX.XXX.XXX.XXX
NETMASK=XXX.XXX.XXX.XXX
NETWORK=XXX.XXX.XXX.XXX
ONBOOT=yes
TYPE=Ethernet
Setup 2

/etc/sysconfig/network-scripts/ifcfg-ethX

DEVICE=ethX
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
ONBOOT=yes
TYPE=Ethernet
Setup 3

/etc/sysconfig/network-scripts/ifcfg-ethX

DEVICE=ethX
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
ONBOOT=yes
TYPE=Ethernet

/etc/sysconfig/network-scripts/ifcfg-ethX.Y

DEVICE=ethX.Y
BOOTPROTO=static
BROADCAST=XXX.XXX.XXX.XXX
IPADDR=XXX.XXX.XXX.XXX
NETMASK=XXX.XXX.XXX.XXX
NETWORK=XXX.XXX.XXX.XXX
ONBOOT=yes

Information

If you want to use the NIC switching mode to share the same physical connection between two virtual interfaces, one bundles physical interfaces and the other bundles tagged VLAN interfaces, you need to set up ifcfg-ethX the same as Setup 1 using the same IP address (IPADDR=) and other values. For example, if sha0 bundles eth0 and eth1, and sha1 bundles eth0.2 and eth1.2, configure ifcfg-eth0 according to ifcfg-ethX in Setup 1, not according to that shown in Setup 3.

Setup 4

/etc/sysconfig/network-scripts/ifcfg-ethX

DEVICE=ethX
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
ONBOOT=yes
TYPE=Ethernet

/etc/sysconfig/network-scripts/ifcfg-ethX.Y

DEVICE=ethX.Y
BOOTPROTO=static
ONBOOT=yes
Setup 5

/etc/sysconfig/network-scripts/ifcfg-ethX

DEVICE=ethX
BOOTPROTO=static
HWADDR=XX:XX:XX:XX:XX:XX
HOTPLUG=no
ONBOOT=yes
DEVICETYPE=hanet

(2) Verification of the physical interface

Verify if the physical interface is inserted into the system using ifconfig command.
Also, if the physical interface is UP, check whether it is marked as "RUNNING". If "RUNNING" is not displayed, the links might be down on the interface. Check the cable switch and HUB speed settings. Use the "ethtool" command to check the link state.

# ifconfig -a
eth0      Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
          inet addr:192.168.70.2  Bcast:192.168.70.255  Mask:255.255.255.0
          inet6 addr: fe80::xxx:xxxx:xxxx:xxxx/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2140 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2140 errors:0 dropped:0 overruns:0 carrier:0
          collisions:22 txqueuelen:1000
          RX bytes:278285 (271.7 KiB)  TX bytes:273656 (267.2 KiB)
          Base address:0xec80 Memory:d2fc0000-d2fe0000
eth1      Link encap:Ethernet  HWaddr 0xx:xx:xx:xx:xx:xx
          inet addr:192.168.71.2  Bcast:192.168.71.255  Mask:255.255.255.0
          inet6 addr: fe80::xxx:xxxx:xxxx:xxxx/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2138 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2118 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:278492 (271.9 KiB)  TX bytes:273666 (267.2 KiB)
          Base address:0xecc0 Memory:d2fe0000-d3000000

In the above example, it is possible to use eth0 and eth1. For details regarding ifconfig command, refer to the Linux manual.

Information

When using Tagged VLAN, ensure that the NIC supports tagged VLAN functionality (IEEE 802.1Q). In addition, in a Redundant Line Control function, the effective range of VLAN-ID which can be specified is from 1 to 4094.

(3) Checking the name service

When using name services such as DNS or NIS, define keywords such as hosts in /etc/nsswitch.conf file to first refer to the local file. This allows to solve the address even if the DNS, NIS or LDAP sever is unreachable. The following is an example of /etc/nsswitch.conf.

#
# /etc/nsswitch.conf
#
# An example Name Service Switch config file. This file should be
# sorted with the most-used services at the beginning.
#
# The entry '[NOTFOUND=return]' means that the search for an
# entry should stop if the search in the previous entry turned
# up nothing. Note that if the search failed due to some other reason
# (like no NIS server responding) then the search continues with the
# next entry.
#
# Legal entries are:
#
#       nisplus or nis+         Use NIS+ (NIS version 3)
#       nis or yp               Use NIS (NIS version 2), also called YP
#       dns                     Use DNS (Domain Name Service)
#       files                   Use the local files
#       db                      Use the local database (.db) files
#       compat                  Use NIS on compat mode
#       hesiod                  Use Hesiod for user lookups
#       [NOTFOUND=return]       Stop searching if not found so far
#

# To use db, put the "db" in front of "files" for entries you want to be
# looked up first in the databases
#
# Example:
#passwd:    db files nisplus nis
#shadow:    db files nisplus nis
#group:     db files nisplus nis

passwd:     files
shadow:     files
group:      files

#hosts:     db files nisplus nis dns
hosts:      files dns
.....

Information

If the host name rather than the IP address is used in setting GLS, enable the hostname resolution function (set by hanetparam -h), which allows you to change the host name to the IP address using only the /etc/hosts file without depending on the /etc/nsswitch.conf file setting.

(4) IPv6 RA daemon configuration

GLS supports radvd(router advertisement daemon for IPv6) for RA (router advertisement) daemon. To use IPv6(dual) on Fast switching mode, you must start RA daemon on the host running GLS in order to transmit RA from virtual interfaces. Other than this purpose, RA daemon is not necessary. The following describes configuration procedure.


radvd configuration

  1. Define the configuration in /etc/radvd.conf.

    When transmitting network information (network fec0:1::, prefix length 64) from sha0 with RA(router advertisement), define the configuration description as shown below.
    In addition, the difference in the version of radvd needs to define the following kernel parameters (net.ipv6.conf.all.forwarding=1) in /etc/sysctl.conf.
    For details on radvd configuration, refer to radvd manual.

    interface sha0
{
        AdvSendAdvert on;        # Sending router advertisements
        MinRtrAdvInterval 3;
        MaxRtrAdvInterval 10;       
        prefix fec0:1::0/64      # Sending Prefix fec0:1::0/64 from sha0
        {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };
};

  2. Configure radvd to startup during system startup (when run level is 2, 3, or 5).

    # chkconfig --level 235 radvd on

  3. Verify radvd is configured to startup on run level 2, 3, 5.

    # chkconfig --list radvd
radvd            0:off   1:off   2:on   3:on    4:off    5:on    6:off

(5) Route configuration

Route configuration of IPv4 or IPv6 is described below.


Default gateway configuration

Define the default gateway address (GATEWAY) in the "/etc/sysconfig/network" file.

/etc/sysconfig/network
GATEWAY=192.168.1.254

For IPv6 and NIC switching mode, configure the setting by using the user command execution function instead of the network configuration file for the operating system. In the configuration file of the user command execution function, define the operating system command assigning the route of IPv6 to be executed after activation of the IP address. For details, refer to the Linux manual (ip(6), route(8) and so on).

Information

  • The default gateway device (GATEWAYDEV) can not be configured for a physical interface bound with NIC switching mode.

  • When defining the default gateway (GATEWAY) in the "/etc/sysconfig/network-scripts/ifcfg-ethX" file in the NIC switching mode, add the same configuration of GATEWAY in the configuration files of all NICs bound by GLS. Note that if different configurations of GATEWAY are defined in the "/etc/sysconfig/network" file and the "/etc/sysconfig/network-scripts/ifcfg-ethX" file, the configuration in the "/etc/sysconfig/network-scripts/ifcfg-ethX" file has a priority.

    # /opt/FJSVhanet/usr/sbin/hanetconfig print
[IPv4,Patrol / Virtual NIC]

 Name        Hostname        Mode Physical ipaddr   Interface List
+-----------+---------------+----+-----------------+--------------
     sha0        192.168.1.10     e                     eth1,eth2

# cat /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
(omitted)
GATEWAY=192.168.1.254

# cat /etc/sysconfig/network-scripts/ifcfg-eth2
DEVICE=eth2
(omitted)
GATEWAY=192.168.1.254

  • If you do not use the "/etc/sysconfig/network" file in the environment where Virtual NIC mode is used, configure the route in the "/etc/sysconfig/network-scripts/ifcfg-shaX" file. You do not need to configure it in the "/etc/sysconfig/network-scripts/ifcfg-ethX" file in the same way as NIC switching mode. For details, see "3.3.3 Virtual NIC mode".


Static route configuration

To configure a static route on a routing table, define the configuration on the "/etc/sysconfig/network-scripts/route-Interface name" file.

(6) IPv6 module configuration

Supporting IPv6(dual) on GLS Fast switching mode or NIC switching mode, or performing the IPv6 communication on Virtual NIC mode, it is required to load IPv6 module on Linux. See the following for configuring IPv6 module.


Loading ipv6 module

  1. Configure /etc/sysconfig/network to use IPv6. Ignore the tunneling configuration, since GLS does not support tunneling feature.

    NETWORKING_IPV6=yes
IPV6TO4INIT=no

    In the environment with RHEL5 or earlier, when the setting which disables IPv6 is defined in /etc/modprobe.conf, delete the setting or comment it out.

    # alias net-pf-10 off
# alias ipv6 off
# options ipv6 disable=1

  2. Reboot the system.

    # /sbin/shutdown -r now

  3. Verify IPv6 module is loaded.

    # lsmod | grep ipv6
ipv6                  662756  10

(7) Tagged VLAN configuration

To use tagged VLAN interfaces in Fast switching mode, NIC switching mode, or Virtual NIC mode, set up the tagged VLANs as follows:


Loading tagged VLAN module

  1. Configure /etc/sysconfig/network to use tagged VLAN.

    VLAN=yes

  2. Reboot the system.

    # /sbin/shutdown -r now

  3. Verify tagged VLAN module is loaded.

    # lsmod | grep 8021q
8021q                  18760   1

(8) Network hotplug configuration

To use GLS in RHEL5, edit the following file to deactivate the hotplug function for the virtual interface (sha). You do not need to edit the file below in RHEL6.

/etc/udev/rules.d/60-net.rules
SUBSYSTEM=="net", ENV{INTERFACE}=="sha*", GOTO="skipgls"
ACTION=="add", SUBSYSTEM=="net", IMPORT{program}="/lib/udev/rename_device"
SUBSYSTEM=="net", RUN+="/etc/sysconfig/network-scripts/net.hotplug"
LABEL="skipgls"

Note

When PTF of RHEL is applied, the "/etc/udev/rules.d/60-net.rules" file may return to the content before it is edited. Edit the file after application.

3.2.2.2 System setup in Fast switching mode

Common settings between IPv4 and IPv6

When using an IPv4 address

When using an IPv6 address

3.2.2.3 System setup in NIC switching mode

Common settings between IPv4 and IPv6

When using an IPv4 address

When using an IPv6 address

3.2.2.4 System setup in Virtual NIC mode

Edit the setting (/etc/sysconfig/network-scripts/ifcfg-ethX file) for the physical interface of the GLS bundles as follows:

Table 3.9 Configuration of physical interface

Item

Value (Example)

Description

DEVICE

ethX

Specify the device name. Set to "ethX".

BOOTPROTO

static

Specify the protocol when getting the IP address. Set to "static" or "none".

HWADDR

XX:XX:XX:XX:XX:XX

Specify the MAC address of the device.

HOTPLUG

no

Specify use of hotplug. Set to "no". Set to "no".

ONBOOT

yes

Select whether to start the physical interface on startup of the operating system. Set to "yes".

DEVICETYPE

hanet

Specify the type of the device. Set to "hanet".

An example is shown below.

To create backup of the physical interface settings (the "/etc/sysconfig/network-scripts/ifcfg-ethX" file), the file name must begin with names other than "ifcfg-".
(e.g. bak_ifcfg-ethX)
If the file name begins with "ifcfg-", OS might recognize the interface as an interface to be activated during system startup.

Point

  • For the physical interfaces bundled by GLS, do not specify "TYPE=Ethernet". Otherwise, GLS will not work properly.

  • IPADDR and other addresses are not required, so do not make any settings.

  • Specify the HWADDR and "ONBOOT=yes" to avoid renaming the device on startup of the operating system.

  • Set HWADDR to the unique MAC address of the NIC.

  • For the ifcfg-ethX configuration of the physical interfaces bundled in the GLS virtual interface, add the item "DEVICETYPE=hanet".

3.2.2.5 System setup in GS linkage mode

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