Avaya Configuring VINES Services Manual de usuario descargar pdf (Pagina 25)

VINES Overview

1-9

Figure 1-5. VINES Internet Protocol Header

When the router receives a packet, the VINES IP entity on the router handles the

packet according to how it is addressed, as follows:

• Packets destined for the router

When the router receives a packet addressed to itself, it ﬁrst reassembles the

packet, if it is fragmented. Next, the router ensures that the packet is not

corrupted by checking the checksum, if there is one. Finally, it passes the

packet up to the next level for processing.

Checksum (2 bytes)

Protocol Type (1 byte)

Destination Network Number (4 bytes)

Destination Subnetwork Number (2 bytes)

Source Network Number (4 bytes)

Source Subnetwork Number (2 bytes)

Packet Length (2 bytes)

Transport Control (1 byte)

18 bytes

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 67 68

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Avaya Configuring VINES Services Manual de usuario Pagina 25