Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Manuale Utente Scaricare il pdf (Pagina 19)

18 CHAPTER 1  CLICK 340/341/342 MANAGED SWITCHES

Figure 2.3 – Class B Subnet Mask

Using this subnet mask, the TCP/IP protocol soware dierentiates between the devices

that are connected to the local subnetwork and the devices that are located in other sub-

networks.

Example

Device 1 wants to establish a connection with device 2 using the above subnet mask.

Device 2 has IP address 59.EA.55.32.

IP address display for device 2:

 Hexadecimal representation: 59.EA.55.32

 Binary representation: 0101 1001.1110 1010.0101 0101.0011 0010

e individual subnet mask and the IP address for device 2 are then ANDed bit-by-bit by

the soware to determine whether device 2 is located in the local subnetwork. e gure

below shows the ANDing of the subnet mask and IP address for device 2 (see Figure 2.4).

Figure 2.4 – ANDing the Subnet Mask and IP Address

Aer ANDing, the soware determines that the relevant subnetwork (01) does not cor-

respond to the local subnetwork (11) and the data telegram is forwarded to a subnetwork

router.

Flowchart After a Restart

e gure below is a owchart showing how to load Conguration Data (see Figure 2.5).

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 75 76

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Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Manuale Utente Pagina 19