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IEEE 802.1Qcy-2019 pdf free download
IEEE 802.1Qcy-2019 pdf free download.IEEE Standard for Local and Metropolitan Area Networks— Bridges and Bridged Networks Amendment 32: Virtual Station Interface (VSI) Discovery and Configuration Protocol (VDP) Extension to Support Network Virtualization Overlays Over Layer 3 (NVO3).
used to uniquely identify each VIAN. Instead, overlapping VIDs may be used in different regions of the network, and a per-region mapping between the global VLAN and the region-specific VID is maintained. In this case, the VLAN is uniquely and globally identified by a GroupiD.
When VLANs are identified by (irouplD. the station has knowledge of the GroupiD hut it does not, in general, know the corresponding VII) to be used by tralTic associated with (he VLAN. The Bridge is aware of, or can obtain knowledge of, the VII) associated with the specified GroupiD. ThUS, the station can send GroupiD values to the Bridge via the Filter Inib field of’ the VDP Request. The Bridge can map GroupiD values to local VTD values. The VID is included in the filler constructed by the Bridge and is returned with its corresponding GrouplD to the station via the VDP Response.
In the NVO3 Split-NVF scenario, the VNI ID is carried in the lower 3 octets of the GroupiD. The upper octet of the GroupiD shouldcall ieros,
NOTE l—Thc mechanism by which the EVB Bridge determines the (iroupiD to local VII) associations is ouisidc thc scopc of this standard.
Additionally, the Filter Into field of a VDP TLV in a VDP Response can specify a Priority Code Point (PUP) value associated with any, or all, of the VID values carried by that VDP Response. The PUP value, if specitied. is used by the EVB station as the default PUP value associated with the VSI and VII). The Filter Info field contains a PUP Significant (PS) bit associated with each PUP field, indicating whether the PUP field carries a PUP value (binary I) or does not carry a PCP value (binary 0). If the PUP field carries a PUP value, then the EVIl station can adopt that value as the default PC? value associated with the VSI and VID. When sending data frames associated with a given VST and VID, the EVB station can determine the PUP value associated with each frame by using an algorithm local to the EVIl station. For example, the PUP value can be based on the identity of an application associated with the frame as determined by examining higher layer information. For any given frame. it is possible that the algorithm does not provide a specific value of PUP. In such cases, the PUP field is assigned the value of the default PUP associated with the VSI and VII).
NOTE 2—Specification of a PUP value in the VDP Response does not imply that all frames sent by the EVB station. associated with the VSI and VII). carry the specified PUP. It implies only that, if the EVB station has no other inIomation regarding the PUP value that should appear in that particular frame, then the specified default P(’P value is used.IEEE 802.1Qcy-2019 pdf free download.
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