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MFA Forum requests PW Type Value for ATM Virtual Trunks

MFA Forum requests PW Type Value for ATM Virtual Trunks. Peter Busschbach Lucent Technologies. ATM/MPLS Control Plane Interworking Client-to-Client. Establish PWs for ATM routing and signaling channel. 1-1 mapping between ATM VCs and Pseudo Wires.

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MFA Forum requests PW Type Value for ATM Virtual Trunks

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  1. MFA Forum requests PW Type Value for ATM Virtual Trunks Peter Busschbach Lucent Technologies

  2. ATM/MPLS Control Plane InterworkingClient-to-Client Establish PWs for ATM routing and signaling channel • 1-1 mapping between ATM VCs and Pseudo Wires Establish PW for each ATM VC under control of ATM signaling PE1 PE2 ATM Network PSN ATM Network

  3. ATM/MPLS Control Plane InterworkingVirtual Trunks • With Virtual Trunks, ATM VC establishment is transparent to PSN Establish PW as Virtual Trunk PE1 PE2 ATM Network PSN ATM Network

  4. ATM/MPLS Control Plane InterworkingVirtual Trunks – distributed implementation • The distributed implementation enables interworking with minimal modifications to ATM switches and LERs ME maps VPI range to the Virtual Trunk PW Virtual Trunk is identified as a VPI range. E.g. {32, 63} L2E 1 L2E 2 ME1 ME2 ATM Network PSN ATM Network

  5. Translating VPI Ranges • To increase manageability, VPI ranges are locally significant • MEs translate VPI ranges • This does not require the ME to be involved in ATM VC establishment {0, 31} {0, 31} A2 What VPI range should be used for this VT? A1 {32, 63} {32, 63} A3

  6. New PT Type Value • Liaison statement from MFA Forum requesting a new PW Type value for VTs • Existing values are not applicable • 0x0003 ATM transparent cell transport does not allow for VPI translation • 0x0009 ATM n-to-one VCC cell transport is defined for a single VCC • 0x000A ATM n-to-one VPC cell transport is defined for a single VPC • Virtual Trunk Interworking Agreement is ready for Final Ballot

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