3com S7906E Istruzione Sull'Installazione

 

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z 

You can modify classes, behaviors, and class-behavior associations in a QoS policy even after it is 

applied.  

z 

The QoS policies applied to ports, VLANs, and the system globally have descending priorities. For 

example, if a port and a VLAN carried on the port have both referenced a QoS policy for incoming 

traffic, the one on the port is used to match traffic prior to the one for the VLAN.  

 

A policy can be applied to multiple interfaces, but in one direction (inbound or outbound) of an interface 

only one policy can be applied.  

Follow these steps to apply the QoS policy to an interface: 

Enter system view 

— 

Enter 
interface 
view 

interface interface-type 
interface-number 

Enter 
interface 
view or port 
group view   Enter port 

group view 

port-group manual 
port-group-name 

Use either command 

Settings in interface view take 
effect on the current interface; 
settings in port group view take 
effect on all ports in the port 
group.  

Apply the policy to the 
interface/port group 

qos apply policy policy-name 
{ inbound | outbound } 

Required 

 

The QoS policy applied to the outgoing traffic of an interface does not regulate local packets. Local 

packets refer to the critical protocol packets sent by the local system for maintaining the normal 

operation of the device. To avoid drop of these packets, QoS does not process them. Commonly used 

local packets include link maintenance packets, IS-IS packets, OSPF packets, RIP packets, BGP 

packets, LDP packets, RSVP packets, and SSH packets. 

 

You can apply a QoS policy to multiple online users, but in one direction of each online user only one 

policy can be applied. To modify a QoS policy already applied in a certain direction, remove the QoS 

policy application first.  

Follow these steps to apply the QoS policy to online users: 

Enter system view 

system-view 

—