Transcript new-vinod-ENNI-Protection-0110-v01.pptx

M Vinod Kumar
Tejas Networks Ltd
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Example
Requirements
Possible solutions
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8
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Op#1
L2 Service
Customer
C1
ENNI
Operator 1
Carrier
Ethernet/
EoSDH
Op#1
L2 Service
Customer
Work
Operator 2
L2 Leased
Line
L2 Network
Protect
Rail-Tel
1. Op#1 wants p2p L2VPN from C1 to C2
2. Op#1 leases L2 service from Op#2
3. ENNI Protection issue
Carrier
Ethernet/
EoSDH
C2
Op#1
L2 Service
Customer
C1
ENNI
Operator 1
Carrier
Ethernet/
EoSDH
Op#1
L2 Service
Customer
Work
L2 Network
Operator 2
L2 Leased
Line
Protect
1. Working-ENNI fails  traffic switches
to protection-ENNI
• Protection-ENNI could be defined
over the 4 topologies mentioned
Carrier
Ethernet/
EoSDH
C2
Fault
Notification
Op#1
L2 Service
Customer
C1
ENNI
Operator 1
Carrier
Ethernet/
EoSDH
Op#1
L2 Service
Customer
Work
L2 Network
Operator 2
L2 Leased
Line
Protect
Carrier
Ethernet/
EoSDH
C2
Fault
Notification
Fault within the operator cloud may
lead to ENNI protection
Op#1
L2 Service
Customer
C1
ENNI
Operator 1
Carrier
Ethernet/
EoSDH
Op#1
L2 Service
Customer
L2 Network
Work
Operator 2
L2 Leased
Line
Protect
Carrier
Ethernet/
EoSDH
C2
Carrier
Frames
No change to the customer frames
Customer
Frames
If working-ENNI fails then traffic be switched to the
protection-ENNI
1.
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Protection-ENNI may share zero, one or two terminal bridges
with working-ENNI
Fault notification may be sent to one or both operators
Fault within the operator cloud may lead to traffic
movement from working-ENNI to protection-ENNI
2.
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Example: when the node bridging MTNL and working-ENNI
fails
Fault notification be sent towards ENNI or the peering
operator
No change to the customer frames
3.
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Provider identifiers like S-VLAN, B-VLAN, TESI-ID, etc. may
change at the ENNI from provider to provider
1.
Enhancing PBB-TE with
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2.
SPB
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3.
Open-jaw
Alarm Indication Signal (AIS) in CFM
Load sharing using ECT at ENNI (works for
specific topology ‘8’ of ENNI)
New idea if and only if we cannot enhance
the existing technology
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Request for bringing a new PAR