3com 3031 Instruccion De Instalación

C

HAPTER

 68: C

ONGESTION

 M

ANAGEMENT

Check the following items before initiating configuration:

■

Router C can send dada streams successful across Router A and Router B and 
to Router D.

■

DSCP domain has been configured for the packets before they enter Router A.

Figure 239   Networking for class-specific queuing configuration

Configure Router A

1 Define three classes, match them respectively with the IP packets with their DSCP 

domain respectively being AF11, AF21 and EF. 

[3Com]traffic classifier af11_class

[3Com-classifier-af11_class]if-match dscp af11

[3Com-classifier-af11_class]traffic classifier af21

[3Com-classifier-af21]if-match dscp af21

[3Com-classifier-af21]traffic classifier ef_class

[3Com-classifier-ef_class]if-match dscp ef

[3Com-classifier-ef_class]quit

2 Define traffic behavior, configure AF and minimum bandwidth.

[3Com]traffic behavior af11_behav

[3Com-behavior-af11_behav]queue af bandwidth pct 5

[3Com-behavior-af11_behav]traffic behavior af21_behav

[3Com-behavior-af21_behav]queue af bandwidth pct 5

[3Com-behavior-af21_behav]quit

3 Define traffic behavior, configure EF and minimum bandwidth (bandwidth and 

delay guarantee also available). 

[3Com]traffic behavior ef_behav

[3Com-behavior-ef_behav]queue ef bandwidth pct 30

[3Com-behavior-ef_behav]quit

4 Specify QoS policy and allocate traffic behaviors to different classes.

[3Com]qos policy dscp

[3Com-qospolicy-dscp]classifier af11_class behavior af11_behav

[3Com-qospolicy-dscp]classifier af21_class behavior af21_behav

[3Com-qospolicy-dscp]classifier ef_class behavior ef_behav

[3Com-qospolicy-dscp]quit

5 Apply the QoS policy to the ATM PVC outbound direction of Router A.

Ethernet

Ethernet

RouterA

RouterB

ATM 1/0/0

1.1.1.1/24

ATM 1/0/0

1.1.1.2/24

AF11

AF21

EF

RouterC

RouterD