Creating The Sap - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Configuring VPLS Services

Creating the SAP

Each service it bound to at least one Service Access Point, which identifies the point at which customer
traffic enters the provider edge (PE). Configuring a SAP requires the following components:
•
An existing service ID number for the service to which the SAP will direct traffic.
•
An access port or link aggregate number configured with either a null or dot1q encapsulation type.
•
An encapsulation value (0, all, or VLAN ID) that identifies the type of customer traffic ingressing on
the access port that the SAP will direct to the service.
Configuring the encapsulation value for the SAP ID depends on the encapsulation type (null or dot1q)
configured for the access port. Use the following table to determine the appropriate value to use:
Port Encap Type
null
dot1q
dot1q
dot1q
Once the above components are configured, use the
For example, the following command creates a SAP that will direct customer traffic ingressing on access
port 1/4 that is tagged with VLAN ID 50 to service 100:
-> configure service vpls 100 sap 1/4:50 create
In the above example, the 1/4:50 designation is often referred to as the SAP ID or the encapsulation ID. In
addition, the access port was configured with a dot1q encapsulation type. This means that if no other SAPs
are configured for port 1/4, then any traffic ingressing on that port is dropped if the traffic is not tagged
with VLAN 50.
Configure the SAP Trust Mode
The configure service vpls sap trusted
SAP can accept 802.1p values in incoming packets; an untrusted SAP will set any 802.1p values to zero in
incoming packets, unless an 802.1p value is configured with this command.
By default, a SAP is trusted with the priority set to best effort (zero). Use the no form of the configure
service vpls sap trusted command with the priority option to change the SAP mode to untrusted. For
example:
-> configure service vpls 100 sap 1/4:50 no trusted priority 7
When a SAP is trusted, the priority value contained in tagged customer packets is used; untagged packets
are assigned the default priority value (zero). When a SAP is untrusted, the priority value configured for
the SAP is assigned to both tagged and untagged customer packets.
page 11-24
SAP Encap Value Customer Traffic Serviced
0 All tagged and untagged packets. The all and
VLAN ID values are not configurable on null
access ports.
0 All untagged packets; tagged packets are dropped.
all All tagged and untagged packets not already clas-
sified into a SAP.
VLAN ID (q-tag) Only traffic tagged with the specified VLAN ID.
command is used to configure the trust mode for a SAP. A trusted
OmniSwitch AOS Release 6 Network Configuration Guide
configure service vpls sap create
Configuring VPLS
to create a SAP.
September 2009