ZyXEL Communications IES-6000, IES-5005 manual IES-5000/5005/6000 Support Notes

IES-5000/5005/6000 Support Notes

LBM—Loop Back Message

LTM—Link Trace Message

•MIP--Maintenance Intermediate Point

oAn MIP port forwards the CCMs, LBMs, and LTMs and replies the LBMs and LTMs by sending LBRs and LTRs.

An MIP port forwards the CCMs, LBMs, and LTMs and replies the LBMs and LTMs by sending LBRs and LTRs.

CCM—Continuity Check Message LBM—Loop Back Message LTM—Link Trace Message LBR—Loop Back Response LTR—Loop Trace Response

Customer

Operator A	Operator B	Operator C
	Provider
	Customer
	Provider
Operator	Operator	Operator

Endpoint Intermediate point CFM maintenance Bridge port

Any port of a bridge is referred to as a maintenance point which may be classified as either a maintenance endpoint, maintenance intermediate point. Maintenance endpoints reside at the edge of a maintenance domain, whereas maintenance intermediate points are internal to the domain. Each maintenance endpoint is assigned an unique id within its domain.

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