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draft-sajassi-mohan-l2vpn-vpls-fm-00.txt draft-mohan-sajassi-l2vpn-vpls-pm-00.txt

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draft-sajassi-mohan-l2vpn-vpls-fm-00.txt draft-mohan-sajassi-l2vpn-vpls-pm-00.txt. Dinesh Mohan (Nortel) [email protected] Ali Sajassi (Cisco) [email protected] IETF-59, Seoul March 3, 2004. Contributors & Acknowledgements. Other contributors Shahram Davari (PMC Sierra) - PowerPoint PPT Presentation

Text of draft-sajassi-mohan-l2vpn-vpls-fm-00.txt draft-mohan-sajassi-l2vpn-vpls-pm-00.txt

IETF59-VPLS-OAM-V1Ali Sajassi (Cisco) [email protected]
Fault and Performance Management within FCAPS
Alignment with work in other bodies
ITU-T Q.3/13, IEEE 802.1, MEF
Focus on OAM Procedures across NEs
EMS
NE
NE
NE
EMS
NE
NE
NE
NMS
Environment
*
CE
U-PE
U-PE
N-PE
N-PE
CE
B
B
P
P
P
P
Eth Access
MPLS Core
MPLS Access
*
Service Provider
MPLS Domain
MPLS Domain
Location of MPs and IPs is dependent on Business Models & Deployment Scenarios
Network OAM
Service OAM
PW/MPLS OAM
Maintenance Point
Intermediate Point
OAM Interworking possible to utilize OAM across Layers
However, each layer must support OAM capabilities independently
Ethernet link OAM
MPs realize Maintenance Entities (MEs)
*
Fault Detection
Fault Verification
Fault Isolation
*
Receiver starts timer to expect periodic CC from sender
Loss of n consecutive CCs results in failure detection
Failures detected include:
Sender sends a request to receiver and expects a response
Receiver will typically be the one from whom CCs stop
Verification is done via the response
*
Sender sends a single request and IPs and receiver respond.
Only selective Intermediate Points (IPs) respond
*
Requirements (Information Elements) need to be discussed/agreed for VPLS
*
Calculation/Measurement of performance parameters
Determination of compliance across:
Frame Loss Measurements
Frame Delay Measurements
*
Statistical Methods
Sampling via OAM frames done to estimate the data path behavior
Least accurate since OAM frames behavior could be quite different from data path behavior
Data path managed objects using management plane
Data path managed objects used to make measurements, however, this information is inserted via management plane
Slight impact on accuracy since delay across data plane and management plane interactions
Mostly software based changes required
Data path management objects using data plane
Data path managed objects used to make measurements, however, this information is inserted via data plane
High accuracy since no delay across data plane and management plane interactions
Hardware based changes needed in this case
*
Recommendation for generic method e.g. use of TLVs
Solicited (requiring response) vs. Unsolicited (not requiring response)
Recommendation to use both
*
*
Availability
*
Coordination with:
L2VPN Requirements
IEEE 802.1
ITU-T Q.3/13
Intra Domain MEs
Intra Domain MEs
Access Link MEs
Access Link MEs
Inter Domain ME