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TD020850-0MG

4.3.7.3.2 Map DiffServ DSCP and Priority Queue

Differentiated Services (DiffServ) was first described by RFC2474 which redefines the

TOS octet’s first six bits as the Differentiated Services Code Point (DSCP). This field

selects the per-hop behaviour (PHB) — how packets are queued at network nodes.

RFC 2475 describes DiffServ methods for scalable differentiated services on the

Internet.

Figure 25 displays the first screen of default parameters that apply if you chose DiffServ

as your QoS type. Figure 26 displays the remainder of the default parameters.

Figure 25 — Map DiffServ DSCP and Priority Queue (Part 1)

Figure 26 — Map DiffServ DSCP and Priority Queue (Part 2)

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Contemporary-control-systems Compact Managed Switches Software Manual for Conso Manuale Utente Pagina 32