Configuring VLAN Stacking Configuring Service-Based VLAN Stacking
OmniSwitch 6800/6850/9000 Network Configuration Guide March 2008 page 6-21
A VLAN Stacking SAP basically identifies the location where customer traffic enters the provider
network edge, the type of customer traffic to service, parameters to apply to the traffic, and the service that
will process the traffic for tunneling through the provider network.
Consider the following when configuring a VLAN Stacking SAP:
• A SAP is assigned to only one service, but a service can have multiple SAPs. So, a single service can
process and tunnel traffic for multiple UNI ports and customers.
• Associating multiple UNI ports to one SAP is allowed.
• A default SAP profile is associated with the SAP at the time the SAP is created. This profile contains
the following default attribute values:
The above default attribute values are applied to customer traffic associated with the SAP. Only one
profile is assigned to each SAP; however, it is possible to use the same profile for multiple SAPs.
• To use different profile attribute values, create a new profile and associate it with the SAP. See
“Configuring a Service Access Point Profile” on page 6-23. Each time a profile is assigned to a SAP,
the existing profile is overwritten with the new one.
Use the show ethernet-service sap command to display the SAPs configured for the switch. Use the
show ethernet-service command to display a list of VLAN Stacking services and the SAPs associated
with each service.
Configuring VLAN Stacking User Ports
The ethernet-service sap uni command is used to configure a switch port or a link aggregate as a VLAN
Stacking User Network Interface (UNI) and associate the UNI with a VLAN Stacking service access point
(SAP). For example, the following command configures port 1/1 as an UNI port and associates 1/1 with
SAP 20:
-> ethernet-service sap 20 uni 1/1
A UNI port is a customer-facing port on which traffic enters the VLAN Stacking service. When the port is
associated with a service access point, the port is automatically defined as a UNI port and the default
VLAN for the port is changed to a VLAN that is reserved for the VLAN Stacking application.
To delete a UNI port association with a VLAN Stacking SAP, use the no form of the ethernet-service sap
uni command. For example, the following command deletes the association between UNI 1/1 and SAP
20:
-> ethernet-service sap 20 no uni 1/1
Note that when the last SAP association for the port is deleted, the port automatically reverts back to a
conventional switch port and is no longer VLAN Stacking capable.
Consider the following when configuring VLAN Stacking UNI ports:
• All customer traffic received on the UNI port is dropped until customer VLANs (CVLAN) are associ-
ated with the port. See “Configuring the Type of Customer Traffic to Tunnel” on page 6-22.
Ingress bandwidth sharing shared
Ingress bandwidth maximum 0
CLAN tag preserve (double-tag)
Priority mapping fixed 0
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