I will update the new section in -14, which I'll post in a few minutes so that the WG can review the result.
Benjamin Kaduk <[email protected]> wrote: >> +## Layer-2 Selection + +In a complex Low-power and Lossy Network >> (LLN), the use of mulitple backbone routers connected together by >> technology such as {{?I-D.ietf-6lo-backbone-router}} an area may be >> serviced by multiple distinct > I think there's a botched edit in here; it doesn't seem to parse > properly. Agreed. + In a complex Low-power and Lossy Networks (LLN), multiple LLNs may be connected together by backbone routers ( technology such as {{?I-D.ietf-6lo-backbone-router}}), resulting in an area that is serviced by multiple distinct Layer-2 instances. >> +Layer-2 instances. +These are called PANs. +Historically, this term >> meant "Personal Area Network", but the use of the word "Personal" is >> now deprecated. +Each instance will have a separate Layer-2 security >> profile, and will be distinguished by a different PANID. +The PANID >> is part of the {{ieee802154}} layer-2 header: it is a 16-bit value >> which is chosen to be unique, and it contributes context to the >> layer-2 security. > "security mechanisms", please. done >> +The PANID provides a context similar to the ESSID does in 802.11 >> networking, and can be conceived of in a similar fashion as the 802.3 >> ethernet VLAN tag in that it provides context for all layer-2 >> addresses. + +A device which is already enrolled in a network may >> find after a long sleep that it needs to resynchronize to the Layer 2 >> network. +The enrollment keys that it has will be specific to a >> PANID, but it may have more than one set of keys. +Such a device may >> wish to connect to a PAN that is experiencing less congestion, which >> has a shalower RPL tree. > This looks like it started out as a 3+-element list and got edited down > to just two, with a stray comma and no "or". agreed. >> announcer is. +Once the device synchronizes to a particular PAN's >> TSCH schedule then it may receive DIOs that are richer in their >> diversity than this value. +How this value will be used in practice >> is the subject of future research, and this part of the structure +is >> considered experimental. > This makes it sound like the actual structure might change, which I > don't think is the intent. So perhaps "the interpretation of this > value of the structure is considered experimental"? Agreed, thank you. -- Michael Richardson <[email protected]>, Sandelman Software Works -= IPv6 IoT consulting =-
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