User's Manual

Configuration Guide of XGS-5240-Series
225
After data steam classification, a policy map can be created to associate with the class
map created earlier and enter class mode. Then different policies (such as bandwidth limit,
priority degrading assigning new DSCP value) can be applied to different data streams.
You can also define a policy set that can be use in a policy map by several classes.
Apply QoS to the ports or the VLAN interfaces
Configure the trust mode for ports or bind policies to ports. A policy will only take effect on
a port when it is bound to that port.
The policy may be bound to the specific VLAN.
It is not recommended to synchronously use policy map on VLAN and its port.
Configure queue management algorithm
Configure queue management algorithm, such as sp, wrr, wdrr, and so on.
Configure QoS mapping
Configure the mapping from CoS to DP, DSCP to DSCP, IntP or DP, IntP to D SC P.
1. Configure class map.
Command
Explanation
Global Mode
class-map <class-map-name>
no class-map <class-map-name>
Create a class map and enter class
map mode; the “no class-map <clas
s-map-name>” command deletes the
specified class map.
match {access-group <acl-index-or-name> |
ip dscp <dscp-list>| ip precedence <ip-pr
ecedence-list>| ipv6 access-group <acl-ind
ex-or-name> | ipv6 dscp <dscp-list>| ipv6
flowlabel <flowlabel-list>|vlan <vlan-list> |
cos <cos-list> | exp <exp-list>}
no match {access-group | ip dscp | ip pre
cedence | ipv6 access-group | ipv6 dscp |
ipv6 flowlabel | vlan | cos | exp}
Set matching criterion (classify data
stream by ACL, CoS, VLAN ID, IPv4
Precedent, IPv6 FL or DSCP, etc) for the
class map; the no
command deletes
specified matching criterion.
2. Configure a policy map
Command
Explanation
Global Mode
policy-map <policy-map-name>
no policy-map <policy-map-name>
Create a policy map and enter policy
map mode; the no command deletes the
specified policy map.