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Configuring VLAN Stacking Services

Configuring VLAN Stacking

page 9-14

OmniSwitch AOS Release 6 Network Configuration Guide

To delete a service from the switch configuration, use the no form of the ethernet-service service-name 
command. For example, the following command deletes the “Video-Service” service:

-> no ethernet-service servic-name Video-Service

Note that when a VLAN Stacking service is deleted, the SVLAN or IMPVLAN ID association with the 
service is automatically deleted. However, if one or more VLAN Stacking service access point (SAP) are 
associated with the service, remove the SAPs first before attempting to delete the service.

 command is used to configure a switch port or link aggregate of ports as a 

VLAN Stacking Network Network Interface (NNI) and associate the NNI with an SVLAN. Note that NNI 
ports are not associated with IP Multicast VLANs. For example, the following command configures port 
2/1 as an NNI port and associates 2/1 with SVLAN 300:

-> ethernet-service svlan 300 nni 2/1

When a port is associated with an SVLAN using this command, the port is automatically defined as an 
NNI to carry traffic for the specified SVLAN. In addition, the default VLAN for the port is changed to a 
VLAN that is reserved for the VLAN Stacking application. At this point, the port is no longer config-
urable using standard VLAN port commands.

To delete an NNI port association with an SVLAN, use the no form of the ethernet-service svlan nni 
command. For example, the following command deletes the NNI 2/1 and SVLAN 300 association:

-> no ethernet-service svlan 300 nni 2/1

Note that when the last SVLAN association for the port is deleted, the port automatically reverts back to a 
conventional switch port and is no longer VLAN Stacking capable.

Use the 

 command to verify the NNI port configuration for the switch.

 command is used to configure the following parameters that apply to traffic 

processed by NNI ports:

• tpid—Configures the vendor TPID value for the SVLAN tag. This value is set to 0x8100 by default. 

and is applied to traffic egressing on the NNI port and is compared to the SVLAN tag of packets 
ingressing on the NNI port. If the configured NNI TPID value and the ingress packet value match, then 
the packet is considered an SVLAN tagged packet. If these values do not match, then the packet is clas-
sified as a non-SVLAN tagged packet. 

• gvrp legacy-bpdu—Specifies whether or not legacy GVRP BPDU are tunneled on the NNI port. 

GVRP BPDU are dropped by default.

• stp legacy-bpdu—Specifies whether or not legacy Spanning Tree BPDU are tunneled on the NNI port. 

Spanning Tree BPDU are dropped by default.

• transparent-bridging—Configures the transparent bridging status for the NNI port. When transparent 

bridging is enabled, the NNI forwards SVLAN traffic without processing packet contents. As a result, 
the NNI port can also forward traffic for SVLANs that are not configured on the local switch, thus 
allowing for a greater number of NNI port associations with SVLANs. Enabling transparent bridging is 
recommended only on NNI ports that are known to and controlled by the network administrator.