1. Deterministic Networking Application in Ring Topologies
draft-jiang-detnet-ring-01
Yuanlong Jiang
Norman Finn
Jeong-dong Ryoo
Balazs Varga
Liang Geng
102nd IETF – Montreal

2. Backgrounds
Ring topologies have been popular and typically deployed in access/aggregation networks
N31
N21
N22
N32
N13
N14
N23
N12
N15
N33
N24
N11
N41
N16
N42
N19
N17
N18
N43
N51
N52
N44
N64
N53
N56
N71
N63
N61
N54
N72
N55
N73
N62
N75
N74
102nd IETF – Montreal

3. Updates in Version 01
Aligned with the newest Detnet Architecture and Data plane (detnet-dp-sol-mpls)
Using PRF & PEF functions
Converged to a single solution
Don’t care about internal locations of filtering & replication, they can be on input interface, output interface or centrally implemented
102nd IETF – Montreal

4. Multicast ring in Detnet
Root
PRF
P2MP Multicast Service
LSP1 PW
Seq#
Termination
LSP2 PW
Seq#
Leaf
PRF & PEF
Leaf
Leaf
102nd IETF – Montreal

5. Interconnection of Rings
P2MP Multicast Service
Root
Leaf
PRF
Termination
Leaf
PEF & PRF
Termination
PEF & PRF
Leaf
Leaf
Leaf
102nd IETF – Montreal

6. Summary & Next Step
Multicast in a Detnet ring is highly resilient & efficient
High resiliency of Detnet
No matter how many leaf nodes, only 2 copies of packets are sent, one for CW, and one for CCW
Keep aligned with ongoing Detnet WG work and fill any gaps
The authors would like to request more WG feedbacks
102nd IETF – Montreal

7. Thank You
102nd IETF – Montreal