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Design of a Diversified Router: Packet Formats

Detailed breakdown of packet formats for a diversified router design, including internal and substrate protocols, Ethernet headers, MetaNet frame lengths, and more. This guide explains the structure and content of various packet types.

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Design of a Diversified Router: Packet Formats

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  1. Design of aDiversified Router:Packet Formats John DeHartjdd@arl.wustl.edu http://www.arl.wustl.edu/arl

  2. Revision History • 6/2/06 (JDD): • created

  3. Internal Packet Format DAddr (6B) SAddr (6B) Type=802.1Q (2B) VLAN (2B) Type=Substrate (2B) Ethernet Header Destination MPE/MI (2B) Substrate Header Source MPE/MI (2B) Shim Metanet Frame Len (2B) • MPE: Meta Processing Element • MI: Meta Interface • MetaNet Frame Length: Length of Metanet Frame in Bytes • Does not include Shim Metanet Frame (Metanet Frame Len Bytes) Flags (10b) Shim Data Length (6b) Ethernet Trailer (Pad+CRC) Shim Data (0-63B)

  4. DAddr (6B) SAddr (6B) Type=802.1Q (2B) VLAN (2B) Type=Substrate (2B) Destination MPE (2B) RxMI (2B) Metanet Frame Len (2B) Flags (10b) = 0 Shim Data Length (6b) = 0 Shim Data (0-63B) Metanet Frame (Metanet Frame Len Bytes) Ethernet Trailer (Pad+CRC) LC  MPE Internal Format LC MPE • Destination MPE: ID of receiving MPE • RxMI: Receive Meta Interface • Shim: So far, no uses of shim have been defined for LC  MPE • Flags = 0, Shim Data Length = 0  null/empty shim.

  5. DAddr (6B) SAddr (6B) Type=802.1Q (2B) VLAN (2B) Type=Substrate (2B) TxMI (2B) Source MPE (2B) Metanet Frame Len (2B) Flags (10b) Shim Data Length (6b) Shim Data (0-63B) Metanet Frame (Metanet Frame Len Bytes) Ethernet Trailer (Pad+CRC) MPE  LC Internal Format MPE LC • Source MPE: ID of sending MPE • TxMI: Transmit Meta Interface • Shim: May contain MN Address for ARP or Ethernet broadcast of multicast address

  6. DAddr (6B) SAddr (6B) Type=802.1Q (2B) VLAN (2B) Type=Substrate (2B) Destination MPE (2B) Source MPE (2B) Metanet Frame Len (2B) Flags (10b) Shim Data Length (6b) Shim Data (0-63B) Metanet Frame (Metanet Frame Len Bytes) Ethernet Trailer (Pad+CRC) MPE  MPE Internal Format MPE MPE • Destination MPE: ID of receiving MPE • Source MPE: ID of sending MPE • Shim: MR specific information, things like exception packet indicators, etc.

  7. Destination MPE (2B) RxMI (2B) Metanet Frame Len (2B) Flags (10b) Shim Data Length (6b) Shim Data (0-63B) Metanet Frame (Metanet Frame Len Bytes) Pkt Format Delivered by Substrate to MPE • In a shared NPU case: • MR will not receive the Ethernet header • Destination MPE should be id of MR MPE receiving packet

  8. Extra • The next set of slides are for templates or extra information if needed

  9. Text Slide Template

  10. Image Slide Template

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