nfinn-cfm-tutorial-1

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Connectivity Fault ManagementNorman FinnConnectivity Fault Management IEEE 802.1 Tutorial, Portland, July 12, 20041DISCLAIMER• IEEE P802.1ag is a work in progress.• Some of the information in this slide deck reflects consensus among IEEE 802.1 and ITU-T Q.3/13 participants.•reflects only the opinions of the author.• Until P802.1ag and/or Y.17ethoam are approved, there is no reliable means for distinguishing opinion from consensus.Connectivity Fault Management IEEE 802.1 Tutorial, Portland, July 12, 2004 222Edge BridgeATM SwitchBridgeBridgeRouterRouterRouterBridgeswitchswitchEdge BridgeWhat is Metro EthernetConnectivity Fault Management?L2“L1”Ethernet Ethernet 10G ATMover SONET over MPLS Ethernet RFC1483• CFM: Standard Ethernet frames, distinguished from ordinary data frames only by destination MAC address and/or EtherType, and seen, relayed, and/or terminated by Provider Bridges.Connectivity Fault Management IEEE 802.1 Tutorial, Portland, July 12, 2004 333IEEE 802.3ah OAM versus802.1ag CFM = ITU-T Q.3/13 EthOAMIEEE 802.3ah OAM Connectivity Fault ManagementMay be per-service or per-wire. Operates on physical link only. Passes “end-to-end” through Cannot pass through a bridge.bridges.Discovery, Variable request & Connectivity Verification, response, Event notification, Traceroute, Ping, (Alarm Information, Loopback mode. Suppression?).Single instantiation per physical Multiple instances operating at link. multiple levels ...

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Publié par	Aprea
Nombre de lectures	32
Langue	English

Extrait

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Norman Finn

Connectivity Fault Management

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IEEE P802.1ag is a work in progress.



Some of the information in this slide deck reflects consensus among IEEE 802.1 and ITU-T Q.3/13 participants.



Some of the information in this slide deck reflects only the opinions of the author.



Until P802.1ag and/or Y.17ethoam are approved, there is no reliable means for distinguishing opinion from consensus.

DISCLAIMER

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10G Ethernet

ATM RFC1483

L1

CFM: Standard Ethernet frames, distinguished from ordinary data frames only by destination MAC address and/or EtherType, and seen, relayed, and/or terminated by Provider Bridges.

What is Metro Ethernet Connectivity Fault Management?

Ethernet over MPLS

Ethernet over SONET

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Both are TLV based, both will (likely) allow vendor-specific TLVs.

Multiple instances operating at multiple levels simultaneously.

IEEE 802.3ah OAM

Drafting in progress.

Standard approved by IEEE 802.

Single instantiation per physical link.

Discovery, Variable request & response, Event notification, Information, Loopback mode.

Operates on physical link only. Cannot pass through a bridge.

Connectivity Fault Management May be per-service or per-wire. Passes end-to-end through bridges. Connectivity Verification, Traceroute, Ping, (Alarm Suppression?).

Created by one committee.

Joint effort by IEEE 802.1, ITU-T.

IEEE 802.3ah OAM versus 802.1ag CFM = ITU-T Q.3/13 EthOAM