A SAP is a combination of a port and encapsulation parameters which identifies the service access point on the interface and within the SR. Each SAP must be unique within a router. A SAP cannot be defined if the interface loopback command is enabled.
When configuring VPRN interface SAP parameters, a default QoS policy is applied to each ingress and egress SAP. Additional QoS policies and scheduler policies must be configured in the config>qos context. Filter policies are configured in the config>filter context and must be explicitly applied to a SAP. There are no default filter policies.
VPRN interface ATM SAP parameters on a 7750 SR can only be configured on ATM-type MDAs and ATM-configured ports. The periodic-loopback command can only be enabled when the config>system>atm>oam context is enabled. See the 7450 ESS, 7750 SR, 7950 XRS, and VSR Basic System Configuration Guide.
The following example displays a VPRN interface SAP configuration:
*A:ALA-1>config>service# info
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...
vprn 1 customer 1 create
vrf-import "vrfImpPolCust1"
vrf-export "vrfExpPolCust1"
ecmp 8
autonomous-system 10000
route-distinguisher 10001:1
auto-bind-tunnel
resolution filter
resolution-filter ldp
vrf-target target:10001:1
interface "to-ce1" create
address 10.1.0.1/24
sap 1/1/10:1 create
ingress
scheduler-policy "SLA2"
qos 100
exit
egress
scheduler-policy "SLA1"
qos 1010
filter ip 6
exit
exit
exit
static-route-entry 10.5.0.0/24
next-hop 10.1.1.2
spoke-sdp 2 create
exit
no shutdown
exit
...
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*A:ALA-1>config>service#