13-7
3
．
Apply QoS to the ports or the VLAN interface
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.
4
．
Configure queue management algorithm
Configure queue management algorithm, such as sp, wrr, wdrr, and so on.
5
．
Configure QoS mapping
Configure the mapping from CoS to DP, DSCP to DSCP, IntP or DP, IntP to DSCP.
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
<class-map-name>
” command deletes
the specified class map.
match {access-group <acl-index-or-name> |
ip dscp <dscp-list> | ip precedence
<ip-precedence-list> | ipv6 access-group
<acl-index-or-name> | ipv6 dscp <dscp-list> |
ipv6 flowlabel <flowlabel-list> | vlan
<vlan-list> | cos <cos-list>}
no match {access-group | ip dscp | ip
precedence | ipv6 access-group | ipv6 dscp |
ipv6 flowlabel | vlan | cos }
Set matching criterion (classify data
stream by ACL, CoS, VLAN ID, IPv4
Precedence, 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 policy-map
<policy-map-name>
” command
deletes the specified policy map.
class <class-map-name> [insert-before
<class-map-name>]
no class <class-map-name>
After a policy map is created, it can be
associated to a class. Different policy or
new DSCP value can be applied to
different data streams in class mode; the
no command deletes the specified
class.
set {ip dscp <new-dscp> | ip precedence
<new-precedence>|internal priority
<new-inp>| drop precedence <new-dp> |cos
<new-cos>}
Assign a new DSCP,
CoS,
IP
Precedence value for the classified
traffic; the no
command cancels the
newly assigned value.