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Forum Discussion
chicagobakh
Mar 16, 2024Follower
JGS516v2 router backhaul issues
I have been trying to get a TP-Link Deco system to work over Ethernet backhaul and this switch appears to not allow it. Other signals (e.g., a laptop computer plugged into a separate ethernet port) ...
schumaku
Mar 16, 2024Guru - Experienced User
Not much to add to this: https://www.tp-link.com/us/support/faq/1794/
No word of what is implicitly required .... ask TP-Link what "most switches on the market are"!
- schumakuMar 17, 2024Guru - Experienced User
Ok, spent a little bit of spare time briefly flying over IEEE 1905.1a
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IEEE Standard for a Convergent Digital Home Network for Heterogeneous Technologies Amendment 1: Support of New MAC/PHYs and Enhancements
IEEE Standard for a Convergent Digital Home Network for Heterogeneous Technologies Amendment 1: Support of New MAC/PHYs and EnhancementsAn abstraction layer for multiple home networking technologies that provides a common interface to widely deployed home networking technologies is defined in this standard: IEEE 1901(TM) over power lines, IEEE 802.11(TM) for wireless, Ethernet over twisted pair cable, and MoCA 1.1 over coax. Additional network technologies are supported by an extensible mechanism using an IEEE OUI and an XML-formatted document. Connectivity selection for transmission of packets arriving from any interface or application is supported by the 1905 abstraction layer. Modification to the underlying home networking technologies is not required by the 1905 abstraction layer, and hence it does not change the behavior or implementation of existing home networking technologies. The 1905 abstraction layer is between layers 2 and 3 and abstracts the individual details of each interface, aggregates available bandwidth, and facilitates seamless integration. The 1905 abstraction layer also facilitates end-to-end quality of service (QoS) while simplifying the introduction of new devices to the network, establishing secure connections, extending network coverage, and facilitating advanced network management features including discovery, path selection, autoconfiguration, and QoS negotiation.
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Digging a little bit deeper unveils the definition for the OUI - the "addressing" lets say.
The OUI Datatype Type is defined made up on a pattern with the values "([0-9a-fA-F]{2}:){2}[0-9a-fA-F]{2}"
Datatype for representing OUI. Examples: 01:80:C2:, 01:05:10, etc.This datatype restricts each field of the OUI to have exactly 2 digits that are hexadecimal digits, i.e., [0-9a-fA-F][0-9a-fA-F]:[0-9a-fA-F][0-9a-fA-F]
(Indeed, everything publicly accessible in the GenericPhyInfoV1.xsd - I have just made it a little bit more human-friendly for reading and explaining).
Let's map this now to a L2 switch. Nothing difficult: The MAC address consists of 6 octets. The first 3 octets of the MAC address are the OUI.
This makes me believe that some switches - like the subject JSG516v2 - don't forward these addresses, very likely simply filtered, or say not explicitly allowed.
This looks to me like some work to for Netgear resp. the switch OEM. Not sure they will jump on this work - even if we talk of IEEE standards valid since about 10 years. Difficult for models already on the EoL list, and even more difficult for unmanaged switches without any user loadable firmware. Feasible -probably- for the non-EoL Plus models with the "E" in the designation - permitting the OEM can make it happen.
Iphie_C please. cc ChristineT
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