1. M Vinod Kumar Problem with Peering PBBN

2. Introduction We present one problem related to Interop between two PBBN operators –We use packet flow in forward direction and in reverse direction to explain the problem Prerequisite: Clause 6.10, 6.11 and 26.6.2 (Peer PBBNs) of IEEE 802.1ah/D4.2

3. PBBN Operator #1 PBBN Operator #2 Fiber BEB Operator #1 Operator #2 PIP MAC = A CBP MAC = CCBP MAC = D PIP MAC = F CBP MAC = BCBP MAC = E Payload VLAN = v1 SA = P DA = Q Payload VLAN = v1 SA = P DA = Q ISID = I1 B-SA = A B-DA = OUI+I1 Payload VLAN = v1 SA = P DA = Q ISID = I1 BVID = B1 B-SA = A B-DA = C Payload VLAN = v1 SA = P DA = Q ISID = I1 B-SA = A B-DA = D Payload VLAN = v1 SA = P DA = Q ISID = I2 BVID = B2 B-SA = A B-DA = F Payload VLAN = v1 SA = P DA = Q ISID = I2 B-SA = A B-DA = F Payload VLAN = v1 SA = P DA = Q CBP PIP Payload VLAN = v1 SA = P DA = Q ISID = I2 B-SA = A B-DA = F BCB CNP PNP E-NNI PIP adds default B-DACBP maps OUI+I1 to CCBP translates C to DCBP translates D to FCBP Removes BVID = B2PIP Removes Backbone headers MAC=P MAC=Q Packet Flow from P to Q

4. BCB CNP PNP PBBN Operator #1 PBBN Operator #2 Fiber BEB Operator #1 Operator #2 PIP MAC = A CBP MAC = CCBP MAC = D PIP MAC = F CBP MAC = BCBP MAC = E Payload VLAN = v1 SA = P DA = Q Payload VLAN = v1 SA = P DA = Q ISID = I1 B-SA = A B-DA = OUI+I1 Payload VLAN = v1 SA = P DA = Q ISID = I1 BVID = B1 B-SA = A B-DA = C Payload VLAN = v1 SA = P DA = Q ISID = I1 B-SA = A B-DA = D Payload VLAN = v1 SA = P DA = Q ISID = I2 BVID = B2 B-SA = A B-DA = F Payload VLAN = v1 SA = P DA = Q ISID = I2 B-SA = A B-DA = F Payload VLAN = v1 SA = P DA = Q CBP PIP Payload VLAN = v1 SA = P DA = Q ISID = I2 B-SA = A B-DA = F Address of B-MAC A is learnt. OK! B-MAC Address A from PBBN #1 is learnt in PBBN #2 => Bad! E-NNI MAC=P MAC=Q Packet Flow from P to Q

5. PIP adds learnt B-DA = A PBBN Operator #1 PBBN Operator #2 Fiber BEB Operator #1 Operator #2 PIP MAC = A CBP MAC = CCBP MAC = D PIP MAC = F CBP MAC = BCBP MAC = E Payload VLAN = v1 SA = Q DA = P Payload VLAN = v1 SA = Q DA = P ISID = I1 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P ISID = I1 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P ISID = I1 BVID = B1 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P ISID = I2 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P ISID = I2 BVID = B2 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P CBP PIP Payload VLAN = v1 SA = Q DA = P ISID = I2 B-SA = F B-DA = A BCB CNP PNP E-NNI CBP Adds BVID = B2 MAC=P MAC=Q CBP Removes BVID = B2CBP adds BVID = B1CBP Removes BVID1PIP Removes Backbone headers Packet Flow from Q to P

6. BCB CNP PNP PBBN Operator #1 PBBN Operator #2 Fiber BEB Operator #1 Operator #2 PIP MAC = A CBP MAC = CCBP MAC = D PIP MAC = F CBP MAC = BCBP MAC = E CBP PIP Address of B-MAC F is learnt. OK! B-MAC address F from PBBN #2 is learnt in PBBN #1 => Bad! E-NNI MAC=P MAC=Q Payload VLAN = v1 SA = Q DA = P Payload VLAN = v1 SA = Q DA = P ISID = I1 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P ISID = I1 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P ISID = I1 BVID = B1 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P ISID = I2 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P ISID = I2 BVID = B2 B-SA = F B-DA = A Payload VLAN = v1 SA = Q DA = P Payload VLAN = v1 SA = Q DA = P ISID = I2 B-SA = F B-DA = A Packet Flow from Q to P

7. Question Carriers want MAC scalability of his domain not to depend on MAC addresses of the peering carriers –Virtually B-MAC of all PIP from all peer PBBN will be learnt Is it possible to prevent learning of MAC addresses from one PBBN within another PBBN? –If yes, how? –If no, we need to solve it to offer Carrier Grade Ethernet Transport

8. Thank-You