PRIMECLUSTER Global Link Services Configuration and Administration Guide: Redundant Line Control Function 4.2 (for Linux)

1.3 System Configuration

Fast switching mode

[Figure 1.4 Fast switching mode]

NIC switching mode

[Figure 1.5 NIC switching mode]

Redundant Line Control function consists of the following components:

Main unit		PRIMEQUEST, PRIMERGY
NIC (Network Interface Cards)		The following Fujitsu adapters or cards can be used: - Basic Ethernet interface - Ethernet card - Fast Ethernet card - Gigabit Ethernet card
Switch/HUB (NIC switching mode)		IP address information must be configured for switch/HUB, e.g. switch/HUB with SNMP agent
Operating system (OS)		For details about the operating system supported by the redundant line control function, see the GLS Installation Guide.
Interfaces	Physical interface	Generated by each NIC. (e.g. ethX).
	Tagged VLAN interface	Interface (e.g. eth0.2, eth1.3) that is generated through tagged VLAN (IEEE 802.1Q).
	Virtual interface	Generated through redundant line control (e.g. sha0 and sha1). Network applications can communicate using a virtual IP address assigned to the virtual interface. In NIC switching mode, the virtual interface name is used technically although no virtual interface is generated. A logical IP is allocated to the actual network so that the network applications enable communication through the logical IP address.
Network number	Fast switching mode	A different network number is assigned to each physical interface and a virtual interface. In Figure 1.4, three network numbers must be prepared for the three interfaces.
	NIC switching mode	Only one number is assigned to each network. No virtual interface is generated
IP address	Fast switching mode	An IP address must be allocated to each physical interface and a virtual interface. If there are two or more virtual interfaces, an IP address will be allocated to each virtual interface. Both IPv4 address and IPv6 address can be used.
	NIC switching mode	An IP address must be allocated to each logical interface. If there are two or more logical interfaces, an IP address will be allocated to each logical interface. Both IPv4 address and IPv6 address can be used.