Table of Contents
Advertisement
1.1.2
Link aggregation
Link aggregation is a technology which treats 1 logical circuit by collecting physical circuit together. When
there is insufficient area in one physical circuit, wide area is secured by collecting multiple circuits together.
Moreover, when one circuit cannot communicate due to the cause of the failure etc. among physical circuits
which set link aggregation, the function of a redundant composition is also provided because the
communication can be continued with the other physical circuit.
When two or more VLAN are included, it is the structure where multiple VLAN are included in one circuit
logically, is composed of link aggregation similar to 1 physical circuit. Moreover, even STP is treated as one
circuit and the control of the port is executed by logical circuit of link aggregation.
1.2
Outline of Device Setting
Relation of network and setting
As the information to be set in this device, Physical information related to circuit connection, logical
information related to network connection and routing information in sorting condition of data is required.
Moreover, other device specific information and setting of additional services are executed when required. In
this device, large scale classification related to setting of this information is as follows.
•ether definition
It is an instruction group defining physical information related to connection circuit in this device. Information
related to type and speed of circuit is defined.
•vlan definition
It is an instruction group defining information related to VLAN of this device. Information of VLAN protocol and
information of static study table are defined.
•lan definition
It is an instruction group defining logical information related to LAN connection in this device. Information of IP
address of LAN and network is defined. Moreover, it is defined according to lan definition related to LAN
dependent service of DHCP etc.
•Other definitions
It is an instruction group defining necessary information depending on device and information of additional
services. Information related to network administration and time information is also defined.
Definition of Network Interface
The network interface which acts as 'exit' at the time of data transmission, has various types according to its
characteristics and connected circuit. Following is the explanation for types of network interface.
•lo
Loopback interface. It is used when return transmission is executed by internal program of the device.
•lan
Ethernet interface. It is an interface that is used in case of transmission used by Ethernet. It is set according to
the lan definition. The interface number given to this interface type, becomes the network interface name.
Example：lo0,lan0,lan1,...
Network interface of lan is set according to the lan definition.
Definition number of lan definition and interface number of network interface are in 1 to 1 correspondence.
Definition of Routing Information
Routing information defines the information necessary to determine the network interface that finally
becomes the exit. In this device, routing information is set within the definition in exit interface. For example,
routing information that is defined in lan0 for output from lan0 and routing information that is defined in
lan1 for output from lan1 are set separately.
Page 4 of 71
Advertisement
Table of Contents
