1. MVPN / EVPN Composite Tunnel
draft-zzhang-bess-mvpn-evpn-composite-tunnel-00
Jeffrey Zhang (Juniper)
Jorge Rabadan (Nokia)
Ali Sajassi (Cisco)
IETF104, Mar 2019
Prague

2. Generalizing the concept of the RFC8317 Composite Tunnels
Used in EVPN E-Tree
RFC8317 Composite Tunnel
Tunnel Type advertised by the Root PE in the EVPN IMET routes, that indicates P2MP in Tx and IR in Rx
Unicast
mLDP P2MP
IMET route
Orig-IP=R2
T=130 (mLDP-IR)
IR Label=L2
T-ID=R2, LSP-ID 2
Goal of this draft
Extend composite tunnels to:
MVPN I-PMSI A-D routes
MP2MP
EVPN Assisted Replication
Advertising PEs can also use IR in Tx
Describe Composite Tunnel Use-cases
Orig-IP=R1
T=130 (mLDP-IR)
IR Label=L1
T-ID=R1, LSP-ID 1 R1 R2 P P
EVPN
Orig-IP=L3
T=6 IR L3 L4 L5

3. Composite Tunnel Use-Cases BIER introduction in EVPN networks
Orig-IP=R2
T=0x8B (BIER-IR)
IR Label=L2
T-ID=SD/BFR-ID/P
Orig-IP=R1
T=0x8B (BIER-IR)
IR Label=L1
T-ID=SD/BFR-ID/P R1 R2
Use-case 1 – Composite BIER-IR Tunnels
Used along with [EVPN-BIER] and [BIER-PHP] to introduce BIER in EVPN networks with non-capable BIER PEs
R1 and R2 use BIER
Leafs use IR
BIER domain
PHP
PHP
IR/unicast
Orig-IP=L3
T=0x8B (BIER-IR)
IR Label=L3
T-ID=SD/BFR-ID/P L3 L4 L5
BIER
Orig-IP=L4
T=0x8B (BIER-IR)
IR Label=L4
T-ID=SD/BFR-ID/P
Orig-IP=L5
T=0x8B (BIER-IR)
IR Label=L5
T-ID=SD/BFR-ID/P
IMET route

4. Composite Tunnel Use-Cases BIER introduction in EVPN networks
Orig-IP=AR-IP1
Flags=AR-Rep
T=0x0A
IR Label=L1
T-ID=AR-IP1
Orig-IP=AR-IP2
Flags=AR-Rep
T=0x0A
IR Label=L2
T-ID=AR-IP2
Use-case 2 – Composite BIER-IR Tunnels with AR
Used along with [EVPN-AR], [EVPN-BIER] and [BIER-PHP] to introduce BIER in EVPN networks with non-capable BIER PEs, with a single copy from Leafs
R1 and R2 use BIER
Leafs use AR to AR-R, fall back to IR if no AR-Rs are left
AR-R1
AR-R2
Orig-IP=IR-IP1
T=0x0B (BIER)
T-ID=SD/BFR-ID/P
Orig-IP=IR-IP2
T=0x0B (BIER)
T-ID=SD/BFR-ID/P
BIER domain
PHP
PHP
Unicast
IP DA= AR-IP, BM traffic
Orig-IP=IR-IP5
Flags=AR-Leaf
T=0x8B (BIER-IR)
IR Label=L5
T-ID=SD/BFR-ID/P
Orig-IP=IR-IP3
Flags=AR-Leaf
T=0x8B (BIER-IR)
IR Label=L3
T-ID=SD/BFR-ID/P
AR-LEAF3
AR-LEAF4
AR-LEAF5
BIER
IMET route
Orig-IP=IR-IP4
Flags=AR-Leaf
T=0x8B (BIER-IR)
IR Label=L4
T-ID=SD/BFR-ID/P

5. Next steps
The Authors would like to request Feedback

6. Thank you