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DRNI Examples and DAS position

DRNI Examples and DAS position. Maarten Vissers 2011-08-10. Three examples. DRNI between two PBBNs is established between four B-BEB nodes. DRNI between a PBN and a PBBN is established between two PB nodes and two IB-BEB nodes.

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DRNI Examples and DAS position

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  1. DRNI Examples and DAS position Maarten Vissers 2011-08-10

  2. Three examples • DRNI between two PBBNs is established between four B-BEB nodes • DRNI between a PBN and a PBBN is established between two PB nodes and two IB-BEB nodes • DRNI between a PBBN and a PBB-TEN is established between four IB-BEB nodes 1 2 3 PBN PBBN PBBN PB PB B-BEB B-BEB IB-BEB IB-BEB DRNI DRNI DRNI PBBN PBB-TEN PBBN IB-BEB IB-BEB IB-BEB B-BEB B-BEB IB-BEB

  3. The following slides present the three examples by means of their node models with • Port and Relay functions • Clause 6, 8 and 19 shims • The objective is to determine where the Distributed Link Aggregation Sublayer (DAS) belongs in the stack of clause 6/8/19 shims • 802.1AX specifies the LAG sublayer as a client of the MAC Sublayer; the LAG sublayer is bound by one upper MAC SAP and multiple lower MAC SAPs • In an 802.1D bridge the LAG sublayer would be located below the MAC Relay, presenting the set of true ISS SAPs as one (virtual) ISS SAP to the Relay; the LAG sublayer is then bound by one upper (virtual) ISS SAP and multiple lower ISS SAPs • Discussion: The upper ISS SAP can not be used to instantiate UP/DOWN MEPs and MIPs, as this SAP is a virtual SAP located inside the bridge’s ‘switch fabric’ • In an 802.1Q bridge the LAG sublayer should in analogy be located below the MAC Relay, presenting the set of true EISS SAPs as one (virtual) EISS SAP to the Relay; the LAG sublayer is then bound by one upper (virtual) EISS SAP and multiple lower EISS SAPs • Discussion: The upper EISS SAP can not be used to instantiate UP/DOWN MEPs and MIPs, as this SAP is a virtual SAP located inside the bridge’s ‘switch fabric’ • Clause 22 of 802.1Q-2011 specifies that the LAG Sublayer is located at the ISS SAP, not at the EISS SAP; it specifies that per VID UP/DOWN MEPs and MIPs can be instantiated between MAC Relay and LAG Sublayer and that only a Link Down MEP can be instantiated below the LAG sublayer. • DRNI however requires that each service instance passes through an UP MEP just before handing the service frames to the E-NNI link

  4. 1. PBN – DRNI – PBBN Intra-DAS 802.n The Intra-DAS link can be supported by a link (solid line) in the carrier domain (top) or a dedicated link (dotted line) within the DRNI area (bottom) 6.7 19.2 PNP PBN 8.5 6.9.9.5b PB PB 19.2,19.3,19.5 DAS 8.6 S-VLAN MAC Relay PNP PNP PNP PNP PNP PNP PNP PNP DAS DRNI 19.2/3/5 19.2/3/5 19.2/3/5 S-VLAN Relay S-VLANRelay 6.9.9.5b 6.9.9.5b 6.9.9.5b DRNI 8.5 8.5 8.5 ? PNP 19.2 19.2 19.2 PNP PNP PNP PNP PNP PNP 6.7 6.7 6.7 802.n 802.n 802.n OR 802.n 802.n 802.n Intra-DAS ? 6.7 6.7 6.7 PBBN CNP CNP CNP CNP CNP CNP 19.2 19.2 19.2 CNP IB-BEB IB-BEB 8.5 8.5 8.5 S-VLAN Relay S-VLAN Relay 6.9.9.5b 6.9.9.5b 6.9.9.5b 19.2/3/5 19.2/3/5 19.2/3/5 DAS PIP PIP PIP PIP PIP PIP PIP PIP 8.6 S-VLAN MAC Relay CBP CBP CBP CBP CBP CBP CBP CBP 19.2/3/5 19.2/3/5 19.2/3/5 6.9.9.5b 6.9.9.5b 6.9.9.5b B-VLAN Relay B-VLAN Relay 8.5 8.5 8.5 PIP 6.10 6.10 6.10 6.14 6.14 6.14 PNP PNP PNP PNP PNP PNP PNP PNP 6.14 6.14 6.14 CBP 6.11,9.5c 6.11,9.5c 6.11, 9.5c 19.2/3/5 19.2/3/5 19.2/3/5 8.6 TESI/ESP MAC Relay

  5. 802.n Intra-DAS Should this be a P2P BSI carrying N S-VIDs? Or, should this be a P2P B-VLAN carrying N BSIs, each with a single S-VID? 6.7 19.2 2. PBBN – DRNI – PBB-TEN 8.5 6.9.9.5b 19.2,19.3,19.5 8.6 B-VLAN MAC Relay PBBN 19.2/3/5 19.2/3/5 19.2/3/5 CBP 6.11,9.5c 6.11,9.5c 6.11, 9.5c 6.14 6.14 6.14 PNP PNP PNP PNP PNP PNP PNP PNP 6.14 6.14 6.14 IB-BEB IB-BEB 6.10 6.10 6.10 B-VLAN Relay B-VLAN Relay PIP 8.5 8.5 8.5 6.9.9.5b 6.9.9.5b 6.9.9.5b CBP CBP CBP CBP CBP CBP CBP CBP 19.2,19.3,19.5 19.2,19.3,19.5 19.2,19.3,19.5 DAS 8.6 S-VLAN MAC Relay PIP PIP PIP PIP PIP PIP PIP PIP DAS DRNI 19.2/3/5 19.2/3/5 19.2/3/5 S-VLAN Relay S-VLAN Relay 6.9.9.5b 6.9.9.5b 6.9.9.5b 8.5 8.5 8.5 DRNI CNP ? 19.2 19.2 19.2 CNP CNP CNP CNP CNP CNP 6.7 6.7 6.7 802.n 802.n 802.n OR Intra-DAS 802.n 802.n 802.n 6.7 6.7 6.7 ? PBB-TEN CNP CNP CNP CNP CNP CNP CNP 19.2 19.2 19.2 IB-BEB IB-BEB 8.5 8.5 8.5 S-VLAN Relay S-VLAN Relay 6.9.9.5b 6.9.9.5b 6.9.9.5b DAS 19.2/3/5 19.2/3/5 19.2/3/5 PIP PIP PIP PIP PIP PIP PIP PIP 8.6 S-VLAN MAC Relay CBP CBP CBP CBP CBP CBP CBP CBP 19.2/3/5 19.2/3/5 19.2/3/5 6.9.9.5b 6.9.9.5b 6.9.9.5b TESI/ESP B-Relay TESI/ESP B-Relay PIP 8.5 8.5 8.5 6.10 6.10 6.10 6.14 6.14 6.14 PNP PNP PNP PNP PNP PNP PNP PNP 6.14 6.14 6.14 CBP 6.11,9.5c 6.11,9.5c 6.11, 9.5c 19.2/3/5 19.2/3/5 19.2/3/5 8.6 TESI/ESP MAC Relay

  6. 3. PBBN – DRNI – PBBN Multiple CBPs have to be combined to create one Super-CBP function (instead of multiple independent CBP functions) with a single set of B-VLAN MEPs connected to the Super-CBP function at one side and multiple CBP ports at the other side. BSI UP MEPs on each CBP port can be used to terminate the Carrier MA. Super-CBP function includes a BSI Relay function interconnecting B-VLAN virtual ports and CBP ports 802.n 802.n 802.n Intra-DAS Should this be a P2P B-VLAN? 6.7 6.7 6.7 PNP 19.2 19.2 19.2 8.5 8.5 8.5 PBBN 6.9.9.5b 6.9.9.5b 6.9.9.5b 19.2,19.3,19.5 19.2,19.3,19.5 19.2,19.3,19.5 8.6 B-VLAN MAC Relay 19.2/3/5 19.2/3/5 19.2/3/5 19.2/3/5 B-BEB B-BEB DAS 6.11,9.5c (BSI Relay) 6.11,9.5c 6.11,9.5c 6.11, 9.5c DRNI DAS PNP PNP PNP PNP PNP PNP PNP PNP 19.2/3/5 19.2/3/5 19.2/3/5 CBP 8.5 8.5 8.5 B-Relay B-Relay 19.2 19.2 19.2 ? 6.7 6.7 6.7 802.n 802.n 802.n CBP CBP CBP CBP CBP CBP OR DRNI 802.n 802.n 802.n Intra-DAS 6.7 6.7 6.7 B-BEB B-BEB 19.2 19.2 19.2 CBP 8.5 8.5 8.5 CBP CBP PBBN CBP CBP CBP CBP 19.2/3/5 19.2/3/5 19.2/3/5 ? 6.11,9.5c (BSI Relay) 6.11,9.5c DAS 6.11,9.5c 6.11, 9.5c B-Relay B-Relay 19.2/3/5 19.2/3/5 19.2/3/5 19.2/3/5 PNP PNP PNP PNP 8.6 B-VLAN MAC Relay PNP PNP PNP PNP 19.2/3/5 19.2/3/5 19.2/3/5 6.9.9.5b 6.9.9.5b 6.9.9.5b 8.5 8.5 8.5 PNP 19.2 19.2 19.2 6.7 6.7 6.7 802.n 802.n 802.n

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