Fast Reroute Overview RFC 4090에 정의되어 있음 FRR(Fast Reroute)은 장애 발생 전에 자동으로 Protection Path를 설정하는 방법을 정의함 장애 감지 후 50ms 미만의 Failover를 보장함 FRR을 사용하기 위해 IGP는 TE를 구성하고 LSP에 CSPF를 설정해야 함 - FRR이 작동하려면 Head-End가 LSP-Path의 정확한 경로를 알고 Signal을 보내야 하기 때문 Fast Reroute는 자동으로 경로 계산을 해주며 구성 OverHead를 줄이는 데 도움이 됨 FRR을 위해 CSPF를 사용하야 하는 경우 - Strict Hop만 사용 · CSPF를 사용하지 않아도 FRR 동작 · 단, CSPF를 Disable 하면 장애에서 복귀하는 경우 Global Revertive가 Head-End에서 작동하지 않음 - Loose Hop을 사용 · CSPF를 Enable 해야만 FRR 동작 FRR 설정 시 RSVP PAT...
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FacilityMode
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LinkProtectionType
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MergePoint
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MP
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MPLSFastReroute
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MPLSFRR
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MPLSResiliency
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NodeProtectionType
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OnetoManyMode
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OnetoOneMode
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PLR
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PointofLocalRepair
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RSVPFRR
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RSVPResiliency
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FRRType
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FRROnetoOne
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FastRerouteFacility
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FastRerouteLinkProtection
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FastRerouteMode
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FastRerouteNodeProtection
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FastRerouteOnetoMany
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FastRerouteOnetoOne
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FastRerouteProtectionType
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FastRerouteType
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FRRFacilityMode
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FRRLinkProtectionType
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FRRMode
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FRRNodeProtectionType
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FRROnetoManyMode
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RVPFastReroute
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