Smc-networks SMC TigerAccess SMC7824M/FSW Manual do Utilizador descarregar pdf (Página 296)

100

101

LASS

ERVICE

13-8

CLI – The following example shows how to assign WRR weights to each

of the priority queues.

Layer 3/4 Priority Settings

Mapping Layer 3/4 Priorities to CoS Values

This switch supports several common methods of prioritizing layer 3/4

traffic to meet application requirements. Traffic priorities can be specified

in the IP header of a frame, using the priority bits in the Type of Service

(ToS) octet or the number of the TCP port. If priority bits are used, the

ToS octet may contain three bits for IP Precedence or six bits for

Differentiated Services Code Point (DSCP) service. When these services

are enabled, the priorities are mapped to a Class of Service value by the

switch, and the traffic then sent to the corresponding output queue.

Because different priority information may be contained in the traffic, this

switch maps priority values to the output queues in the following manner:

• The precedence for priority mapping is IP Port Priority, IP Precedence

or DSCP Priority, and then Default Port Priority.

• IP Precedence and DSCP Priority cannot both be enabled. Enabling one

of these priority types will automatically disable the other.

Console(config)#queue bandwidth 1 3 5 7 9 11 13 15 31-6

Console(config)#exit

Console#show queue bandwidth 31-8

Information of Eth 1/1

Queue ID Weight

-------- ------

0 1

1 3

2 5

3 7

4 9

5 11

6 13

7 15

Information of Eth 1/2

Queue ID Weight

1 2 ... 291 292 293 294 295 296 297 298 299 300 301 ... 747 748

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