RAM 6000 Informacje Techniczne Pobierz pdf (Strona 55)

Software Manual 55

Network Tab

with any other device on that network with a range of addresses of 192.168.1.1 through 192.168.1.254 (with

192.168.1.255 reserved for broadcast). An address outside of that range is on a different network which would need

to accessed indirectly through a router and that router would be the gateway to the network on which the remote

target device resides, so to communicate with it would mean sending and receiving via the gateway device. This also

requires either defining a static route (defined through the Network→Stac Routes screen) via that gateway or mak-

ing it the default route (by setting Use Remote Gateway as Default Route to Yes

Your Network Administrator should be able to provide an appropriate value. The address must be one within the valid

range for the network.

Enter Maximum Transmission Unit (MTU): Enter the desired MTU size. In computer networking, the maximum trans-

mission unit (MTU) of a communications protocol of a layer is the size (in bytes) of the largest protocol data unit that

the layer can pass onwards. MTU parameters usually appear in association with a communications interface (NIC,

serial port, etc). Standards (Ethernet, for example) can fix the size of an MTU; or systems (such as point-to-point serial

links) may decide MTU at connect time. A larger MTU brings greater efficiency because each packet carries more user

data while protocol overheads, such as headers or underlying per-packet delays, remain fixed; the resulting higher

efficiency means a slight improvements in bulk protocol throughput. A larger MTU also means processing of fewer

packets for the same amount of data. In some systems, per-packet-processing can be a critical performance limitation.

However, this gain is not without some downside. Large packets can occupy a slow link for some time, causing greater

delays to following packets and layer (and hence over most of the Internet), ties up a 14.4k modem for about one sec-

ond. The recommended setting is 1500.

Interface Aliases: Sub-interfacing is essentially the segmenting of a single wire, or port, into multiple IP networks. Instead

of subnetting and routing, you can create a sub-interface and then set it up as you would a standard Ethernet interface.

To configure a sub-interface:

• Click on the Add button and the following pop-up window will appear:

Enter Sub interface number (Required): This field is where you enter the sub interface number. The valid range is 0-

99, and each aliased interface must be uniquely numbered. The final sub interface name will then be in the form

ethx:y where x is the root interface number and y is the sub interface number. Your Network Administrator should be

able to provide guidance as to an appropriate value.

Enter IP Address (Required): This field specifies the IP Address of the sub interface. This address should have been

provided by your Network Administrator.

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RAM 6000 Informacje Techniczne Strona 55