Cisco 10000 Series Configuration Manual page 65

Chapter 5 Dynamic Service Policy Modifications
Example 5-1
applied to a VLAN subinterface. In the example, the previously configured policy-map is applied to the
virtual template interface named Virtual-Template1 and the virtual template is in turn applied to the
broadband aggregation (BBA) group named Users1. The Users1 BBA group is then applied to the
Gigabit Ethernet subinterface 2/0/0.500 using the pppoe enable group command.
Example 5-1
interface Virtual-Template1
ip unnumbered Loopback0
no peer default ip address
ppp authentication chap User
ppp authorization User
ppp accounting User
ppp ipcp address required
service-policy output subscriber_parent_out
!
bba-group pppoe Users1
virtual-template1
vendor-tag circuit-id service
sessions per-mac limit 4096
sessions per-vlan limit 16000
sessions per-mac throttle 100 10 1
sessions auto cleanup
!
interface GigabitEthernet2/0/0
no ip address
!
interface GigabitEthernet2/0/0.500
encapsulation do1Q 500 second-dot1q any
pppoe enable group Users1
ISG uses the QoS parameters that are a part of the parameterized QoS policy RADIUS Access-Accept
or CoA message to modify a copy of the currently applied default QoS policy (hierarchical policy-map).
To obtain a copy of the default policy, the router copies the hierarchical policy that you originally
configured and applied to a subinterface or virtual template on the ISG. When parameterizing a QoS
policy, the ISG modifies the classes and parameters in the default copy of the QoS policy with no
modifications to the original hierarchical policy.
The modified copy of the default QoS policy map is temporarily stored in the BRAS RAM and is not
Note
visible in the executing configuration file.
Before an ISG creates a copy of a QoS policy and processes the parameterized VSAs received from
RADIUS, a hierarchical policy must exist for the subscriber session or subinterface. The following
sections describe a two-level hierarchical policy-map at the session level and shaping at the subinterface
level:
Session Level Policy, page 5-4
•
Subinterface Level Policy, page 5-4
•
OL-14660-03
shows a configuration example in which the policy-map named subscriber_parent_out is
Applying a Policy to a VLAN Subinterface
Cisco 10000 Series Router Access Network Control Protocol Configuration Guide
Parameterized Services
5-3