Yes it is possible. Again your code should support this, if not you can upgrade.
Sample configuration look like this:
Match the source:
access-list 102 permit ip host any
access-list 103 permit ip host any
class-map hostA
match access-group 102
class-map hostB
match access-group 103
policy-map Reserve
class hostA
priority 1500
class hostB
priority 512
int
service-policy output Reserve
You can use 'bandwidth' command instead of 'priority'. The difference is 'priority' is a minimum bandwidth guarantee but also maximum bandwidth limit during times of congestion. It is prudent to not reserve bandwidth in excess which can starve other traffic including critical traffic such as routing protocols.
