华为AR28-09配置问题...

这段配置文件什么意思 请大家帮忙给解释下：

traffic classifier WLJK operator and
 if-match acl 3000
#
traffic behavior wljk
 queue af bandwidth pct 60
 queue-length 512
#
qos policy wljk
 classifier WLJK behavior wljk
#
acl number 3000
 rule 0 permit ip source 10.132.26.28 0  只需更改IP
#
interface Serial0/0
 qos apply policy wljk outbound
#
ip route-static 10.132.0.0 255.255.255.0 Serial 0/0 preference 60