Constants used in XIA

Table of Contents XIP header Next Header Field DAG External Constants Ethernet Types IP Principal Types

XIP header

Next Header Field

• 0x00 - No next header

DAG

• 0x7f - Empty edge
• 0x7e - Entry node index

External Constants

Ethernet Types

The constants below were identified as not being used by someone else, but we should register/request official Ethernet types at some point.

• 0xC0DE - XIP
• 0xC0DF - NWP

IP

The constant below was identified as unassigned by IANA, but we should register it down the line.

• 143 - XIP header after IP header (IPv4's protocol field)

Protocol numbers assigned by IANA

Principal Types

• nat - 0x00 - Not A Type
• 0x01--0x0f are reserved for future use
• ad - 0x10 - Autonomous Domain
• hid - 0x11 - Host
• cid - 0x12 - Content
• sid - 0x13 - Service
• united4id - 0x14 - United 4ID
• i4id - 0x15 - XIP over IPv4
• u4id - 0x16 - XIP over UDP over IPv4
• xdp - 0x17 - eXpressive Datagram Protocol
• srvcid - 0x18 - Serval's serviceID
• flowid - 0x19 - Serval's flowID
• ether - 0x1a - Ethernet
• u6id - 0x1b - XIP over UDP over IPv6
• 0x1c--0x1f - FREE, PLEASE DON'T USE 0x22 UNTIL THESE IDs ARE GONE.
• zf - 0x20 - zFilter (multicast)
• lpm - 0x21 - Longest Prefix Matching