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| Sun Ethernet Fabric Operating System ### VLAN Administration Guide

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## Create Acceptable Frame Types

To work with acceptable frame types, you must ensure that the follow prerequisites are met:

- VLAN must be configured.

- PVID for the interfaces must be configured.

- Acceptable frame types must be configured.

See Default Settings for the topology for this procedure.

1. Configure the VLAN in switch 1.

       SEFOS# configure terminal
       SEFOS(config)# vlan 15
       SEFOS(config-vlan)# ports extreme-ethernet 0/15,0/19 untagged extreme-ethernet 0/15,0/19
       SEFOS(config-vlan)# exit
       SEFOS(config)# interface extreme-ethernet 0/15
       SEFOS(config-if)# no shutdown
       SEFOS(config-if)# switchport pvid 5
       SEFOS(config-if)# exit
       SEFOS(config)# interface extreme-ethernet 0/19
       SEFOS(config-if)# no shutdown
       SEFOS(config-if)# switchport pvid 5
       SEFOS(config-if)# end

2. Wait for at least 30 seconds for the topology to settle, then ping host B from host A.

   The ping must be successful.

3. On switch 1, configure the acceptable frame type for port P15.

       SEFOS# configure terminal
       SEFOS(config)# interface extreme-ethernet 0/15
       SEFOS(config-if)# switchport acceptable-frame-type tagged
       SEFOS(config-vlan)# end

4. Review the VLAN-related configurations.

       SEFOS# show vlan id 5
       Vlan database
       -------------------
       Vlan ID             : 5
       Member Ports        : Ex0/15, Ex0/19
       Untagged Ports      : Ex0/15, Ex0/19
       Forbidden Ports     : None
       Name                :
       Status              : Permanent
       ------------------------------------

5. Review the VLAN port configuration table.

       SEFOS# show vlan port config port extreme-ethernet 0/15
       Vlan Port configuration table
       -------------------------------
       Port Ex0/15
       Port Vlan ID                       : 5
       Port Acceptable Frame Type         : Admit Only Vlan Tagged
       Port Ingress Filtering             : Disabled
       Port Mode                          : Hybrid
       Port Gvrp Status                   : Enabled
       Port Gmrp Status                   : Enabled
       Port Gvrp Failed Registrations     : 0
       Gvrp last pdu origin               : 00:00:00:00:00:00
       Port Restricted Vlan Registration  : Disabled
       Port Restricted Group Registration : Disabled
       Mac Based Support                  : Disabled
       Subnet Based Support               : Disabled
       Port-and-Protocol Based Support    : Enabled
       Default Priority                   : 0
       Tunnel Status                      : Disabled
       Dot1x Protocol Tunnel Status       : Peer
       LACP Protocol Tunnel Status        : Peer
       Spanning Tree Tunnel Status        : Peer
       GVRP Protocol Tunnel Status        : Peer
       GMRP Protocol Tunnel Status        : Peer
       IGMP Protocol Tunnel Status        : Peer
       Filtering Utility Criteria         : Default
       Port Protected Status              : Disabled
       ----------------------------------------------------------------

   After you configure the acceptable frame type as `Admit OnlyVLAN Tagged`, the ping from host A to host B should fail because `ping`(1M) packets are untagged.

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