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PRIMECLUSTER Global Link Services Configuration and AdministrationGuide 4.3Redundant Line Control Function

3.1.2 Selecting appropriate contents

Select appropriate contents for each mode.

3.1.2.1 Fast switching mode

When using Fast switching mode, determine the information required for configuration of the mode listed in the Table 3.2 Configuration information of Fast switching mode.

Table 3.2 Configuration information of Fast switching mode

Components

Virtual interface information (1)

Virtual interface name

Virtual IP address or host name

Subnet mask

Physical interface information (1)

Physical interface name

IP address or host name

Subnet mask

Physical interface information (2)

Physical interface name

IP address or host name

Subnet mask

(Repeat for the number of physical interfaces)

(Repeat for the number of virtual interfaces)

Description of each component is as follows:

<Virtual interface information>

Setup the followings for the number of virtual interfaces.

Virtual interface name

Specify a name for a virtual interface, which will be assigned to the physical interface used for redundancy. Specify shaX (X represents a number) of this component using "hanetconfig create" command with -n option.

Virtual IP address or host name

Specify an IP address or host name to be assigned for the virtual interface. The network portion (IPv4) and a prefix (IPv6) of this IP address must be different from the IP address assigned for the physical interface. When using IPv4, use "hanetconfig create" command with -i option to specify the IP address to be allocated for the virtual interface. When using IPv6, configure these in /etc/inet/ndpd.conf file.

Subnet mask

When using IPv4 address, specify the sub network mask value applied to the virtual IP address. If subnet is not used, this configuration can be omitted. This component is written in /etc/inet/netmasks file. However, this configuration is not necessary if using IPv6 address.

<Physical interface information>

Setup the followings for the number of physical interfaces used for redundancy.

Physical interface name

Specify a name for the physical interface. This component can be set using "hanetconfig create" command with -t option (e.g. hme1, qfe2 etc).

Physical IP address or host name

If using IPv4 address, specify an IP address or host name to be assigned for the physical interface. The network portion of this IP address must be different from IP address of other physical and virtual interface. Set up this component as follows:
[Solaris 10]
Create "/etc/hostname.physical interface name" file and then assign the IP address (or host name) in the file.

[Solaris 11]
Use the ipadm(1M) command.
Make sure this value is different from the other IP.

Subnet mask

If using IPv4 address, specify a sub network mask value applied to the physical IP address. If subnet is not used for allocation, this configuration can be omitted. This configuration is written in /etc/inet/netmasks file. Note that, this configuration is not necessary if using IPv6 address.

3.1.2.2 NIC switching mode

Table 3.3 Configuration information of NIC switching mode shows the information required to configure NIC switching mode:

Table 3.3 Configuration information of NIC switching mode

Components

Virtual interface information (1)

Virtual interface name

Virtual IP address (or host name)

Subnet mask

Physical interface information (1)

Physical interface name

IP address or host name

Physical interface information (2)

Physical interface name

Standby interface information

Virtual interface name

Automatic switching back mode

Local MAC address configured in Standby interface

Monitored remote system information

Primary Monitored remote system IP address or host name

Secondary Monitored remote system IP address or host name

HUB-to-HUB monitoring

(Repeat for the number of physical interfaces)

Description of each component is as follows:

<Virtual interface information>

Setup the followings for the number of virtual interfaces.

Virtual interface name

Name a virtual interface to be configured on a physical interface used for GLS. Specify the name using "hanetconfig create" command with -n option, in "shaX" (where X is a natural number) format.

Virtual IP address or host name

Specify an IP address or host name allocated to the virtual interface. The network portion (for IPv4) or prefix (for IPv6) of this IP address must be the same IP address assigned to the physical interface. This value is specified using "hanetconfig create" command with -i option.

Subnet mask

When using IPv4 address, specify the value of a sub network mask used for the virtual IP address. This configuration can be omitted if not allocating a subnet. Set a subnet mask in /etc/inet/netmasks file. When using IPv6 address, it is not required to configure this value.

<Physical interface information>

Setup the followings for the number of physical interfaces for redundancy.

Physical interface name

Specify a name of the physical interface. This can be specified using "hanetconfig create" command with -t option. (e.g. hme1,qfe2)

Physical IP address or host name

Specify an IP address or host name assigned to the physical interface. This IP address must be different from the IP address of the other physical and virtual interfaces. Set up this component as follows:
[Solaris 10]
Create "/etc/hostname. <physical interface name>" file and then assign an IP address (or host name) in the file.
[Solaris 11]
Use the ipadm(1M) command.

<Standby patrol information>

When using Standby patrol function, setup the followings. Skip this process if Standby patrol function is not used.

Virtual interface name

Specify a name to a virtual interface for standby patrol function. Specify it using "hanetconfig create" command with -n option, in "shaX" (where X is a natural number) format.

Automatic switch back mode

Setting up the Standby patrol function enables the automatic switch back function when a transfer path recovers from a failure. Specify "q" to "hanetconfig create" command with -m option for using immediate switch-back after a transfer path recovery, or "p" for using standby interface capability.

Local MAC address configured in Standby interface

If the standby patrol function is used, specify a local MAC address to be allocated to the standby interface. A local MAC address is specified in the form of: "02:XX:XX:XX:XX:XX" (where X represents a hexadecimal digit between 0 and F). The leading value "02" indicates the local MAC address, and the rest of the values can be arbitrary. However, please make sure that each MAC address should be unique within a single network. If the same MAC address is used within a network, the standby patrol may not run properly. A local MAC address is specified using "hanetconfig create" command with -a option.

<Monitored remote system information>

Setup the following for the number of virtual interfaces. This configuration cannot be omitted.

Primary Monitored remote system IP address or host name

Specify an IP address or host name of a HUB to be monitored while primary physical interface is being used. This IP address is assigned using "hanetpoll create" command with -p option.

Secondary Monitored remote system IP address or host name

Specify an IP address or host name of a HUB to be monitored while the secondary physical interface is being used. This IP address is specified using "hanetpoll create" command with -p option. This step can be omitted. In such case, the same value as primary remote end IP address or host name is applied.

HUB-to-HUB monitoring

Indicate whether the HUB-to-HUB monitoring function should monitor a transfer path between cascaded HUBs or not, when two HUBs are used:
on: monitor between HUBs,
off: do not monitor between HUBs.
The default value is "off". Specify the value using "hanetpoll create"command with -b option.

3.1.2.3 GS/SURE linkage mode

Table 3.4 Configuration information of GS/SURE linkage mode shows the information required to configure GS/SURE linkage mode.

Table 3.4 Configuration information of GS/SURE linkage mode

Components

Virtual interface information (1)

Virtual interface name

Virtual IP address or host name

Subnet mask

Physical interface information (1)

Physical interface name

IP address or host name

Subnet mask

Physical interface information (2)

Physical interface name

IP address or host name

Subnet mask

(Repeat for the number of the physical interfaces)

Virtual gateway information

Virtual gateway IP address

(Repeat for the number of the virtual interfaces)

Remote node information (1)

Remote node name

Virtual IP information (1)

Virtual IP address

Remote host physical IP address information

IP address or host name (1)

IP address or host name (2)

(Repeat for the number of IP addresses)

Monitoring on/off

Send RIP from remote host on/off

Network information of relaying host

(Repeat for the number of virtual IP)

(Repeat for the number of remote nodes)

Description of each component is as follows:

<Virtual interface information>

Setup the followings for the number of virtual interfaces.

Virtual interface name

A virtual interface name is specified via "hanetconfig create" command with -n option, in "shaX" (where X is a natural number) format.

Virtual IP address or host name

Specify an IPv4 address or host name to be assigned to the virtual interface. The network portion of this IP address must be different from the IP address assigned to the physical interface. Virtual IP address or host name is specified via "hanetconfig create" command with -i option.

Subnet mask

Specify a sub network mask value applied to the virtual IP address. This procedure can be omitted if not applying a subnet. Subnet mask is specified in /etc/inet/netmasks file. When applying subnet mask, apply the same mask value to the whole virtual and physical IP.

<Physical interface information>

Setup the followings for the number of physical interfaces for redundancy.

Physical interface name

Specify a name for the physical interface. Physical interface name is specified via "hanetconfig create" command with -t option.

Physical IP address or host name

Specify an IP address or host name to be assigned to the physical interface. The network portion of this IP address must be different from the IP address allocated to the other physical and virtual interfaces. The physical IP address (or host name) is specified via -i option while executing "hanetconfig create" command with -n option. Do not create "/etc/hostname.<physical interface name>" file.

Subnet mask

Specify a sub network value applied to the physical IP address. This procedure can be omitted if not applying a subnet. Subnet mask is specified in /etc/inet/netmasks file. If using subnet mask, apply the same mask value to a whole virtual and physical IP.

<Virtual gateway information>

Setup the following for the number of virtual interfaces.

Virtual gateway IP address

Specify the IP address of the remote virtual gateway. The network (subnet) portion of the IP address should be the same as the IP address assigned to the virtual interface. This item is specified via "hanetgw create" command with -g option.

<Remote node information>

Configure the following for the number of host nodes.

Remote host name

Specify an arbitrary name (within 16 one-bit characters) to identify the node of remote host. Remote host name is specified via "hanetobserv create" command with -n option.

<Virtual IP information>

Setup the followings for the number of virtual IP.

Virtual IP address or host name

Specify a virtual IP address or host name of the remote host. The virtual IP address or host name is specified via "hanetobserv create" command with -i option. Also, the host name and IP address must be defined in /etc/inet/hosts file.

Remote host physical IP address information

Specify a physical IP address or host name in the virtual IP of the remote host. List these physical IP addresses separated by ',' (commas). Remote host physical IP address information is specified via "hanetobserv create" command with -t option. The IP address and the host name specified here must be defined in /etc/inet/hosts file as well.

Monitoring on/off

Set whether or not to use monitoring function.
on: Turn on the monitoring function from the local host
off: Does not turn on the monitoring.
If monitoring is enabled from the remote host, monitoring the remote host can be omitted. Check the configuration of the remote host and decide whether or not to turn on the monitoring function.
If the remote host (GS) is setup as a hot standby server, then define this in either active node or standby node. This configuration can be specified via "hanetobserv create" command with -m option.

Send RIP from remote host on/off

For this component, specify whether or not to send RIP packets from a remote host.
on: Awaits notification from the remote host and sends notification of the node whether the node has switched or not. After receiving RIP packets from the remote host, it sends out the notification.
off: Does not wait for notification from the remote host. It sends out a notification to every path.
Initially, this is set to "on". If the global server (GS) is setup as a hot standby server, then define this in either operation node or standby node while setting up Monitored remote system information. This configuration is specified using "hanetobserv create" command with -r option.
Caution) If the remote system is setup as a hot standby server, because RIP determines whether operational node or standby is functioning, the parameter should be set as "on".

Network information of relaying host

Specify an IP address or host name of communicating remote network. This IP address and host name must be defined in /etc/inet/hosts file. This configuration is specified using "hanetobserv create" command with -c option.

3.1.2.4 Configuration of individual mode

Table 3.5 Configuration of redundancy mode shows description of parameters for each mode. These values apply to all modes and virtual interfaces on one server. You cannot change these values for each virtual interface or redundancy mode. This configuration is not necessary when using the default value.

Table 3.5 Configuration of redundancy mode

Contents

Fast switching mode

NIC switching
mode

GS/SURE
linkage mode

Default

Transfer path monitoring interval

A

N

N

5 sec

The number of constant monitoring prior to outputting message

A

N

N

0 time

The number of constant monitoring prior to switching cluster

A

N

N

5 sec

Switching cluster immediately after starting

A

N

N

none

Outputting message (monitoring the physical interface)

A

N

N

none

Standby patrol monitoring period

N

A

N

15 sec

The number of constant standby monitoring prior to outputting message

N

A

N

3 times

Deactivating the standby interface

N

A

N

unplumb

Monitoring period

N

A

A

5 sec

The number of monitoring

N

A

A

5 times

Recovery monitoring period

N

N

A

5 sec

Cluster switching

N

A

A

Yes

Link up waiting period

N

A

A

60 sec

Link status monitoring function

N

A

N

Disabled

[Meaning of the symbols] A: Available, N: Not available

The followings are description of each of the content.

Transfer path monitoring interval

Specify the transfer path monitoring interval in seconds. The range of the intervals that can be specified is from 0 to 300 sec. If "0" is specified, it will not monitor the transfer path. Initially, it is set to 5 seconds. The transfer path monitoring interval is set using "hanetparam" command with -w option. This feature is available for Fast switching mode.

The number of constant monitoring prior to message output

Specify the number of times for monitoring before outputting the message (No: 800 or 801) if the message needs to be output as a transfer path failure is detected. The effective range of the numbers which can be specified is from 0 to 100. If "0" is specified, it will not output a message. Initially it is set to 0 (does not output any message). using "hanetparam" command of -m option. Note that this feature is only available for Fast switching mode.

The number of constant monitoring prior to switching cluster

Specify whether or not to switch over the cluster if a failure occurs on a whole transfer path of the virtual interface. The effective range of the numbers is from 0 to 100. it will not switch the cluster. When configuring to switch the cluster, set how many times it repeatedly monitors. The range is from 1 to 100. Initially, it is set to 5, meaning that a cluster failover is triggered after continuously detecting the same failure 5 times. This feature is specified using "hanetparam" command with -i option. This feature is available only for Fast switching.

Switching cluster immediately after starting

Specify whether or not to switch the cluster immediately after the cluster starts up. Configure this if a failure occurs in entire transfer path of the virtual interface before the system starts up. The values which can be specified are either "on" or "off". If "on" is selected, cluster is switched immediately after the userApplication starts up. On the other hand, if "off" is selected, the cluster is not switched even after the userApplication starts up. As an initial value, it is set to "off". This setting is specified using "hanetparam" command with -c option. This is available for Fast switching.

Outputting message (monitoring the physical interface)

Configure whether or not to output a message when the status of the physical interface changes (detecting a failure in transfer path or transfer path recover) in the virtual interface. The values which can be specified are either "on" or "off". If "on" is selected, a message (message number: 990, 991, 992) is output. If "off" is selected, a message is not output. Initially, it is set to "off". This setting is specified via "hanetparam" command with -s option. This is available for Fast switching.

Standby patrol monitoring period

Specify the monitoring interval (in seconds) of operational NIC for standby patrol function. The values which can be specified are from 0 to 100. If "0" is specified, it will not run monitoring. Note if the user command function (using user command when standby patrol fails or detects recovery) is enabled, do not set the parameter to "0". If the parameter is set to "0", the user command function will not work. Initially, the parameter is set to 15 (seconds). This setting is specified via "hanetparam" command with -p option. This configuration is available for NIC switching mode with standby patrol function is enabled.

The number of constant standby monitoring prior to outputting message

When a failure is detected in a transfer path using the standby patrol function, a message will be output to inform the failure. In this section, specify how many times to monitor until the message (message number: 875) is output. The values which can be specified are from 0 to 100. If "0" is selected, it stops outputting a message and disables monitoring using the standby patrol function. Note if the user command function (using user command when standby patrol fails or detects recovery) is enabled, do not set the parameter to "0". If the parameter is set to "0", the user command function will not work. Initially, the parameter is set to 3 (times). This configuration is specified via "hanetparam" command with -o option. This is available in NIC switching mode, which uses the standby patrol function. Using this option, the number of monitoring times doubles immediately after the standby patrol starts.

Deactivating the standby interface

Specify how the standby interface is deactivated. The values which can be specified are either "plumb" or "unplumb". If "plumb" parameter is specified, the standby interface is deactivated and sets "0.0.0.0" for the IP address. With this parameter, it is possible to use "INTERSTAGE Traffic Director" as a high-level application. On the other hand, selecting "unplumb" deactivates the standby interface and then it sets to unused status. Initially, the parameter is set to "unplumb".

Specify "plumb" for the following situations:

  • When configuring high-reliable networks of non-global zones in the shared-ip configuration with the NIC switching mode

  • When configuring high-reliable LinkAggregation which the LACP mode is active with the NIC switching mode

This configuration is specified by "hanetparam" command with -d option. This is available exclusively for NIC switching mode.

Monitoring period

Specify the monitoring period in seconds. The values which can be specified are from 1 to 300. The default value is 5 (seconds). This configuration is specified by "hanetpoll on" command with -s option. This feature is available for NIC switching and GS/SURE linkage mode.

The number of monitoring

Specify the number of monitoring times. The values which can be specified are from 1 to 300. The default value is 5 (times). This configuration is specified using "hanetpoll on" command with -c option. This feature is available for NIC switching and GS/SURE mode.

Recovery monitoring period

Specify the monitoring period when a failure is detected by monitoring the remote host by GS/SURE linkage mode. The values which can be specified are from 0 to 300. The default value is 5 (seconds). This configuration is assigned via "hanetpoll on" command with -b option. This feature is available for GS/SURE linkage mode.

Cluster switching

Specify whether or not to switch the node when a failure occurs to every transfer paths.
yes: Switch nodes when a failure occurs to a whole transfer paths.
no: Does not switch nodes when a failure occurs to a whole transfer path.
The default parameter is "yes". This configuration is specified by "hanetpoll on" command with -f. This feature is available for NIC switching and GS/SURE linkage mode operating as a cluster.

Link up waiting period

In NIC switching mode, specify the time period (in seconds) until the HUB links up after monitoring starts. The values which can be specified are from 1 to 300. If this option is not specified, then the default value is used. Initial value is set to 60 (seconds). If the value is less than the product of monitoring period and monitoring times ("monitoring period" multiplied by "monitoring times"), then the value is ignored and ends up using the value of the product of monitoring period and monitoring times. This configuration is specified by "hanetpoll on" command with -p option. This feature is available for NIC switching and GS/SURE linkage mode.

Link status monitoring function

Specify whether to monitor the link state of the NICs in the virtual interface bundles. The link state is monitored at intervals set by using the -s option of the hanetpoll on command, and GLS immediately performs NIC switching when NIC link down is detected. Also, to switch NICs by detecting an error by the transfer path monitoring, check the link status of the NIC which is the destination of switching beforehand. If NIC is in link down state and the state continues for over 5 seconds (when the standby patrol is set: over 2.5 seconds), switching will be restricted. Specify this monitoring with the -l option of the hanetpoll on command. This function is enabled in NIC switching mode.

3.1.2.5 Upper limit of configuration

The following describes the upper limit of configuration in each mode.

Upper limit of redundant line control methods

The following table lists the upper limit of configuration items set in the redundant line control methods.

Configuration item

Upper limit

Total number of virtual interfaces and logical virtual interfaces

64

See

For information on how to set the upper limit, refer to "7.1 hanetconfig Command".

Upper limit of GS/SURE linkage mode

The following table lists the upper limit of configuration items set for communication host monitoring for GS/SURE linkage mode.

Configuration item

Upper limit

Maximum number of virtual IP addresses (Note 1)

64

Maximum number of physical IP addresses

128

Maximum number of nodes in which a single virtual IP address can be transferred

4

Maximum number of relay destination IP addresses for TCP relay function

256

Note 1)
In the environment where GLS is used in a cluster configuration, you need to configure the following virtual IP addresses as monitoring targets:

See

For information on how to set the upper limit, refer to "7.5 hanetobserv Command".