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VINES Overview

114054 Rev. A 1-11

Figure 1-6. VINES Nonsequenced Routing Update Protocol Header

The four ﬁelds of the header are as follows:

• Operation type speciﬁes the packet type: routing request, update, or redirect

or response.

• Node type speciﬁes the type of node that originated the packet: service or

client.

• Controller type speciﬁes the type of controller that originated the packet:

single-buffer or multibuffer LAN card.

• Machine type speciﬁes the type of processor that originated the packet.

Nonsequenced RTP distinguishes between service nodes and client nodes on the

network. Service nodes route packets addressed to other nodes, usually servers.

Client nodes do not perform any routing services. Both service nodes and client

nodes maintain two routing tables: a table of all known networks and a table of

neighbors. When you conﬁgure both Nonsequenced RTP and Sequenced RTP on

the router, the protocols share these routing tables (Table 1-3).

Operation Type (1 byte)

Node Type (1 byte)

Controller Type (1 byte)

Machine Type (1 byte)

4 bytes

VN0006A

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 71 72

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