1. DRNI Examples, DAS position, MEP/MIP position
Maarten Vissers

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

3. 1. PBN – DRNI – PBBN PBN DRNI PBBN PB PB IB-BEB IB-BEB DAS PNP PNP PNP
S-VLAN Relay
S-VLAN Relay
DRNI
DAS
PNP
PNP
PNP
PNP
PNP
PNP
PBBN
CNP
CNP
CNP
CNP
CNP
CNP
IB-BEB
IB-BEB
S-VLAN Relay
S-VLAN Relay
PIP
PIP
PIP
PIP
PIP
PIP
PIP
PIP
CBP
CBP
CBP
CBP
CBP
CBP
CBP
CBP
B-VLAN
Relay
B-VLAN
Relay
PNP
PNP
PNP
PNP
PNP
PNP
PNP
PNP

4. 2. PBBN – DRNI – PBB-TEN DRNI PBBN PBB-TEN IB-BEB IB-BEB IB-BEB IB-BEB
PNP
PNP
PNP
PNP
PNP
PNP
PNP
PNP
IB-BEB
IB-BEB
B-VLAN
Relay
B-VLAN
Relay
CBP
CBP
CBP
CBP
CBP
CBP
CBP
CBP
PIP
PIP
PIP
PIP
PIP
PIP
PIP
PIP
S-VLAN Relay
S-VLAN Relay
DRNI
DAS
CNP
CNP
CNP
CNP
CNP
CNP
PBB-TEN
CNP
CNP
CNP
CNP
CNP
CNP
IB-BEB
IB-BEB
S-VLAN Relay
S-VLAN Relay
PIP
PIP
PIP
PIP
PIP
PIP
PIP
PIP
CBP
CBP
CBP
CBP
CBP
CBP
CBP
CBP
TESI/ESP
B-Relay
TESI/ESP
B-Relay
PNP
PNP
PNP
PNP
PNP
PNP
PNP
PNP

5. 3. PBBN – DRNI – PBBN
PBBN
B-BEB
B-BEB
PNP
PNP
PNP
PNP
PNP
PNP
PNP
PNP
B-Relay
B-Relay
CBP
CBP
CBP
CBP
CBP
CBP
DRNI
DAS
This case is not further considered in this presentation
B-BEB
B-BEB
PBBN
CBP
CBP
CBP
CBP
CBP
CBP
B-Relay
B-Relay
PNP
PNP
PNP
PNP
PNP
PNP
PNP
PNP

6. Figure drawn during Aug. 11 virtual meeting Text added in v01
The revious figures illustrate the DAS function at the boundary of the clause 8.6 S-VLAN MAC Relay (Forwarding Process) and the clause 19.2/3/5 MEP/MIP functions The figure at the right expands the figures on slides 6/7 and illustrates that the DAS function is bound by EISSs, one connected to the MAC Relay (EISS A) and three connected to CNPs or PNPs (EISS B, C, D) In general, MEP/MIP functions could be located at any EISS SAP In practice MEP/MIP functions in equipment are located at port cards (Option 1), not at switch fabric cards (Option 2) UP MEP functions should terminate Operator MA level as close to the actual E-NNI link as possible; i.e. Option 1 UP MEPs
E-NNI
Link 1
E-NNI
Link 2
Intra-DAS Link
802.n
802.n
802.n
6.7
6.7
6.7
19.2
19.2
19.2
Port Card functionality
E-NNI UP MEP
8.5
8.5
8.5 b b b
Option 1
19.2/3/5
19.2/3/5
19.2/3/5
(EISS B)
(EISS C)
DAS
(EISS D)
Switch fabric Card functionality
Option 2
(EISS A)
8.6 S-VLAN MAC Relay
(EISS X)
(EISS Y)
(EISS Z)
E-NNI ports and E-NNI and intra-DAS ports should be on different port cards to prevent that a port card failure impacts more than one interface port.
DAS function should be implemented on switch fabric card to allow that a S-VLAN can be connected to any of the E-NNI links or intra-DAS link.
Frames of a S-VLAN arriving over the intra-DAS link will be forwarded to the actual E-NNI link via the switch fabric card.
EISS A is a virtual EISS, not accessible for MEP/MIP functions; it is located “in the middle of a switch fabric device”. Switch fabric device has “EISS X, Y, Z, A, B and C” as I/O ports.

7. 802.1Q based model fragment with DAS Connectivity
DRNI Forwarder (DF) Connectivity Options: a or b or c
Traffic engineered Ethernet Connections (EC)
SLA enforced CIR, EIR per EC
E-NNI based shaping/traffic conditioning per EC
Redistribution algorithm of ECs must be aware of CIR of each EC
Maximum number of VLANs per DRNI (4k, more than 4k) has impact on EC Up MEP presence on E-NNI ports: static or dynamic
Loop prevention via NMS or GMPLS
Recovery in carrier network via protection switching or GMPLS based restoration
8.6 Forwarding Process
EISS A
DAS DF a b DF
DRNI CONTROL a b c c
PNP
CNP
PNP
CNP
PB, PBB
PBB-TE
MPLS-TP
OTN
PB, PBB
PBB-TE
MPLS-TP
OTN
EISS B
EISS C
EISS D
EISS E
EC NO Up MEP
EC SP MIP
EC E-NNI Down MEP
Link Down MEP
E-NNI
E-NNI
I-NNI
I-NNI
Intra-DAS

8. DAS, c8.6 Forwarding and G.8031 SNCP Processes
A (to be developed) distributed version of the G.8031 ETH SNC Protection processes is added, facing the carrier domain. Such distributed version of G.8031 SNC Protection processes should be implemented on the switch fabric card to allow that a S-VLAN can be connected to any of the I-NNI links. Each SNC Protection process presents the protected S-VLAN signal via the (virtual) EISS N to the c8.6 Forwarding Process. Working and Protection S-VLAN connections are connected via an I-NNI Link and the Intra-DSNCP Link.
EISS A and EISS N are virtual EISSs, not accessible for MEP/MIP functions; they are located “in the middle of a switch fabric device”. Switch fabric device has “EISS X, Y, Z, A, B and C” as I/O ports.
E-NNI
E-NNI
Link 1
E-NNI
Link 2
E-NNI
Link 3
E-NNI
Link 4
802.n
802.n
802.n
802.n
802.n
802.n
6.7
6.7
6.7
6.7
6.7
6.7
E-NNI
UP MEPs
19.2
19.2
19.2
PNP
19.2
19.2
19.2
8.5
8.5
8.5
PNP
8.5
8.5
8.5 b b b b b b
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
(EISS B)
(EISS C)
(EISS D)
(EISS D)
(EISS C)
(EISS B)
DAS
DAS
(EISS A)
(EISS A)
8.6 Forwarding Process
8.6 Forwarding Process
Switch fabric Card functionality
I-NNI SNCP Down MEPs
(EISS N)
(EISS N)
Distributed version of G.8031 SNC Protection Processes
Distributed version of G.8031 SNC Protection Processes
(EISS X)
(EISS Y)
(EISS Z)
(EISS Z)
(EISS Y)
(EISS X)
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5 b b b b b b
802.n physical interface may be replaced by e.g. OTN interface (S-VLAN over ODUk) or MPLS-TP interface (S-VLAN over transport-LSP)
8.5
8.5
8.5
PNP
8.5
8.5
8.5
PNP
19.2
19.2
19.2
19.2
19.2
19.2
6.7
6.7
6.7
6.7
6.7
6.7
Intra-DAS Link
802.n
802.n
802.n
802.n
802.n
802.n
I-NNI
Link a
I-NNI
Link b
Intra-DSNCP Link
I-NNI
Link d
I-NNI
Link e

9. Example 1A – fault free condition
S-VLAN k
Distributed version of G.8031 SNC Protection Processes
19.2/3/5 b
8.5
19.2
6.7
802.n
I-NNI
Link a
Link b
Link e
Link d
DAS
8.6 Forwarding Process
(EISS A)
E-NNI
Link 1
Link 2
Intra-DAS Link
Link 4
Link 3
(EISS N)
(EISS NW)
Intra-DSNCP Link
PNP
Protection Gateway for S-VLAN k
Typically the Standby Gateway
DSNCP process will pass through S-VLAN traffic in this mode
Will become the Active Gateway if Working Gateway has failed
Working Gateway for S-VLAN k
Typically the Active Gateway
S-VLAN k
S-VLAN k

10. Example 1B – E-NNI Link 1 failure  DRNI protection
Move UP MEP to E-NNI Link 3 port
S-VLAN k X
Distributed version of G.8031 SNC Protection Processes
19.2/3/5 b
8.5
19.2
6.7
802.n
I-NNI
Link a
Link b
Link e
Link d
DAS
8.6 Forwarding Process
(EISS A)
E-NNI
Link 1
Link 2
Intra-DAS Link
Link 4
Link 3
(EISS N)
Intra-DSNCP Link
PNP
Operator MA Up MEP has been moved to E-NNI Link 3 PNP
S-VLAN k connection over Intra-DAS link is now included in the operator MA
Fault in DRNI does not impact protection in carrier network
S-VLAN k
S-VLAN k

11. Example 1C – I-NNI Link a failure  SNC protection
S-VLAN k
Distributed version of G.8031 SNC Protection Processes
19.2/3/5 b
8.5
19.2
6.7
802.n
I-NNI
Link a
Link b
Link e
Link d
DAS
8.6 Forwarding Process
(EISS A)
E-NNI
Link 1
Link 2
Intra-DAS Link
Link 4
Link 3
(EISS N)
Intra-DSNCP Link
PNP
Fault in carrier network does not impact DRNI
S-VLAN k X
S-VLAN k

12. Example 1D – Gateway node failure  SNC & DRNI protection
S-VLAN k
Distributed version of G.8031 SNC Protection Processes
19.2/3/5 b
8.5
19.2
6.7
802.n
I-NNI
Link a
Link b
Link e
Link d
DAS
8.6 Forwarding Process
(EISS A)
E-NNI
Link 1
Link 2
Intra-DAS Link
Link 4
Link 3
(EISS N)
Intra-DSNCP Link
PNP
Operator MA Up MEP has been moved to E-NNI Link 3 PNP X
Working Gateway fault
Protection Gateway has to become Active Gateway for S-VLAN k
As Active Gateway the S-VLAN SNCP Down MEP functions are activated
S-VLAN k
S-VLAN k
S-VLAN k

13. DRNI in PBBN IB-BEBs E-NNI UP MEPs B-VLAN Up MEPs
A PBBN in a carrier domain may support DRNI as illustrated below. The two Gateway nodes are connected to a service carrying B-VLAN S and an additional Intra-DAS B-VLAN. The S-VLANs in the carrier domain are carried in B-VLAN S with an I-Tag. The I-SID of a S-VLAN may be registered at a CBP in the left Gateway, or at a CBP in the right Gateway. The S-VLANs in the Intra-DAS B-VLAN are carried with an I-Tag.
E-NNI
E-NNI
Link 1
E-NNI
Link 2
E-NNI
Link 3
E-NNI
Link 4
802.n
802.n
802.n
802.n
6.7
6.7
6.14
6.14
6.7
6.7
E-NNI
UP MEPs
CNP
19.2
19.2
6.10
6.10
19.2
19.2
PIP
CNP
8.5
8.5
8.5
PIP
8.5
8.5
8.5 b b b b b b
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
(EISS B)
(EISS C)
(EISS D)
(EISS D)
(EISS C)
(EISS B)
DAS
DAS
(EISS A)
(EISS A)
8.6 Forwarding Process
8.6 Forwarding Process
(EISS X)
(EISS Y)
(EISS Z)
(EISS Z)
(EISS Y)
(EISS X)
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5 b b b b b b
PIP
8.5
8.5
8.5
8.5
8.5
8.5
PIP
6.10
6.10
6.10
6.10
6.10
6.10
6.14
6.14
6.14
6.14
6.14
6.14
B-VLAN Up MEPs
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
CBP
6.11,9.5c
6.11,9.5c
6.11, 9.5c
6.11, 9.5c
6.11, 9.5c
6.11,9.5c
6.11,9.5c
6.11, 9.5c
CBP
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
8.6 B-VLAN MAC Relay
8.6 B-VLAN MAC Relay
Port is blocked
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5 b b b b b b
8.5
8.5
8.5
8.5
8.5
8.5
PNP
Intra-DAS B-VLAN
PNP
19.2
19.2
19.2
19.2
19.2
19.2 … … … … … …
B-VLAN S

14. Example 2A – fault free condition…
S-VLAN k
PNP
DAS
19.2/3/5 b
8.5
19.2
6.7
802.n
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)
(EISS C)
(EISS B)
E-NNI
UP MEPs
Link 1
Link 2
Link 4
Link 3
CNP
PIP …
(EISS Y)
(EISS Z)
(EISS X)
6.11, 9.5c
6.11,9.5c
CBP
8.6 B-VLAN MAC Relay
Intra-DAS B-VLAN
B-VLAN S
ISID K
ISID K is registered in this CBP

15. Example 2B – E-NNI Link 1 failure  DRNI protection… X
S-VLAN k
PNP
DAS
19.2/3/5 b
8.5
19.2
6.7
802.n
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)
(EISS C)
(EISS B)
E-NNI
UP MEPs
Link 1
Link 2
Link 4
Link 3
CNP
PIP …
(EISS Y)
(EISS Z)
(EISS X)
6.11, 9.5c
6.11,9.5c
CBP
8.6 B-VLAN MAC Relay
Intra-DAS B-VLAN
B-VLAN S
Operator MA Up MEP has been moved to E-NNI Link 3 PNP
ISID K’
ISID K
ISID K is registered in this CBP

16. Example 2C – I-NNI Link a failure  BVLAN S reroute….
S-VLAN k
PNP
DAS
19.2/3/5 b
8.5
19.2
6.7
802.n
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)
(EISS C)
(EISS B)
E-NNI
UP MEPs
Link 1
Link 2
Link 4
Link 3
CNP
PIP …
(EISS Y)
(EISS Z)
(EISS X)
6.11, 9.5c
6.11,9.5c
CBP
8.6 B-VLAN MAC Relay
Intra-DAS B-VLAN
B-VLAN S
ISID K is registered in this CBP
ISID K
To recover the B-VLAN S, unblock this I-NNI port after failure of other I-NNI port X

17. Example 2D – Gateway node failure  BVLAN reroute & DRNI protection….
S-VLAN k
PNP
DAS
19.2/3/5 b
8.5
19.2
6.7
802.n
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)
(EISS C)
(EISS B)
E-NNI
UP MEPs
Link 1
Link 2
Link 4
Link 3
CNP
PIP …
(EISS Y)
(EISS Z)
(EISS X)
6.11, 9.5c
6.11,9.5c
CBP
8.6 B-VLAN MAC Relay
Intra-DAS B-VLAN
B-VLAN S
Operator MA Up MEP has been moved to E-NNI Link 3 PNP X
Working Gateway fault
Protection Gateway has to become Active Gateway for S-VLAN k
Move registration of ISID K to this port
ISID K

18. DRNI in PBB-TEN IB-BEBs
A PBB-TEN in a carrier domain may support DRNI as illustrated below. The two Gateway nodes are connected to multiple service carrying TESIs and an additional Intra-DAS TESI. The S-VLANs in the carrier domain are carried in a Working or Protection TESI. The S-VLANs in the TESIs are carried with an I-Tag. A Distributed version of TESI protection is to be developed.
E-NNI
E-NNI
Link 1
E-NNI
Link 2
E-NNI
Link 3
E-NNI
Link 4
802.n
802.n
802.n
802.n
6.7
6.7
6.14
6.14
6.7
6.7
E-NNI
UP MEPs
CNP
19.2
19.2
6.10
6.10
19.2
19.2
PIP
CNP
8.5
8.5
8.5
PIP
8.5
8.5
8.5 b b b b b b
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
(EISS B)
(EISS C)
DAS
(EISS D)
(EISS D)
(EISS C)
(EISS B)
DAS
(EISS A)
(EISS A)
8.6 Forwarding Process
8.6 Forwarding Process
(EISS X)
(EISS Y)
(EISS Z)
(EISS Z)
(EISS Y)
(EISS X)
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5 b b b b b b
PIP
8.5
8.5
8.5
8.5
8.5
8.5
PIP
6.10
6.10
6.10
6.10
6.10
6.10
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
6.14
Active Working and Protection TESI MEPs
CBP
6.11,9.5c
6.11,9.5c
6.11, 9.5c
6.11, 9.5c
6.11, 9.5c
6.11,9.5c
6.11,9.5c
6.11, 9.5c
CBP
Standby Working and Protection TESI MEPs
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
8.6 TESI Relay
8.6 TESIRelay
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5
19.2/3/5 b b b b b b b b
8.5
8.5
8.5
8.5
8.5
8.5
8.5
8.5
PNP
Intra-DAS TESI
PNP
19.2
19.2
19.2
19.2
19.2
19.2
19.2
19.2 … … … … … … … …
Working TESI
I-NNI
Link a
I-NNI
Link b
I-NNI
Link d
I-NNI
Link e
Protection TESI

19. Example 3A – fault free condition…
S-VLAN k
PNP
DAS
19.2/3/5 b
8.5
19.2
6.7
802.n
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)
(EISS C)
(EISS B)
E-NNI
UP MEPs
Link 1
Link 2
Link 4
Link 3
CNP
PIP …
(EISS Y)
(EISS Z)
(EISS X)
6.11, 9.5c
6.11,9.5c
CBP
8.6 TESI Relay
8.6 TESIRelay
Intra-DAS TESI
Protection TESI
I-NNI
Link a
Link b
Link e
Link d
Working TESI

20. Example 3B – E-NNI Link 1 failure  DRNI protection… X
S-VLAN k
PNP
DAS
19.2/3/5 b
8.5
19.2
6.7
802.n
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)
(EISS C)
(EISS B)
E-NNI
UP MEPs
Link 1
Link 2
Link 4
Link 3
CNP
PIP …
(EISS Y)
(EISS Z)
(EISS X)
6.11, 9.5c
6.11,9.5c
CBP
8.6 TESI Relay
8.6 TESIRelay
Intra-DAS TESI
Protection TESI
I-NNI
Link a
Link b
Link e
Link d
Working TESI
Operator MA Up MEP has been moved to E-NNI Link 3 PNP

21. Example 3C – I-NNI Link a failure  TESI protection…
S-VLAN k
PNP
DAS
19.2/3/5 b
8.5
19.2
6.7
802.n
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)
(EISS C)
(EISS B)
E-NNI
UP MEPs
Link 1
Link 2
Link 4
Link 3
CNP
PIP …
(EISS Y)
(EISS Z)
(EISS X)
6.11, 9.5c
6.11,9.5c
CBP
8.6 TESI Relay
8.6 TESIRelay
Intra-DAS TESI
Protection TESI
I-NNI
Link a
Link b
Link e
Link d
Working TESI X

22. Example 3D – Gateway node failure  TESI & DRNI protection…
S-VLAN k
PNP
DAS
19.2/3/5 b
8.5
19.2
6.7
802.n
6.10
6.14
8.6 Forwarding Process
(EISS A)
(EISS D)
(EISS C)
(EISS B)
E-NNI
UP MEPs
Link 1
Link 2
Link 4
Link 3
CNP
PIP …
(EISS Y)
(EISS Z)
(EISS X)
6.11, 9.5c
6.11,9.5c
CBP
8.6 TESI Relay
8.6 TESIRelay
Intra-DAS TESI
Protection TESI
I-NNI
Link a
Link b
Link e
Link d
Working TESI
Operator MA Up MEP has been moved to E-NNI Link 3 PNP X
Working Gateway fault
Protection Gateway has to become Active Gateway for S-VLAN k
As Active Gateway the TESI Up MEP functions are activated