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5. 5G-xHaul Call-in Details & Notes

2020-03-18 5G-xHaul Meeting notes

5min

core-model allows definition of both Logical Termination Points (interfaces), but also connections

• Forwarding Domain:
  • either connections inside the same device
  • connections outside devices
• Link:
  • any type of link, not only microwave
• Forwarding Construct:
  • concrete forwarding between two or more LTPs / ports
    • unidirectional / bidirectional

core-model is also suitable for representing entire Networks, not only a Device

this means that Universally Unique IDs are required

Devices cannot get the UUIDs from outside, they need to be generated by the device, and cannot be overwritten from outside

Devices are unaware by their surroundings (the network), so it cannot know if a UUID is already used by some other interface in other devices

IETF defines how to create UUIDs, and the core-model references this RFC

• we need UUIDs for documenting the network
• we cannot write the UUIDs in the device, the device needs to create it 
• the device does not have a network wide view
• this is needed because of the Planning the network

Possible solutions:

• the device generates whatever, the IDs are retrieved and a mapping table is maintained
• we prescribe a method/algorithm that is implemented in the device for creating UUIDs (which become predictable):
  • using some prefix which is known during the implementation time of the device - (e.g. MAC address of the Management interface); vendor sends info about Order no. and MAC addr. to the operator and the Planning will be done with these prefixed values → less complex than a field technician configuring the prefix on the device with some dongle
  • fixed UUID with prefix and postfix

Suggestions:

• use the Device name instead of the MAC addr.
• clean-up application that handles the changing of MAC addresses

Out of time, we need to follow up: proposal, next week Tuesday 09:00 CET