0
\$\begingroup\$

Old 10mbit standards like 10Base2 (thinnet) and 10Base5 (thicknet) are used in a bus topology, multiple devices are connected to one continous cable (or with BNC T-connectors, but same principle).

Is the same true for the new "single pair ethernet" standards 10Base-T1L and 10Base-T1S? Can these be used in a bus topology as well or do they require a star topology like most other PHYs today?

\$\endgroup\$
6
  • \$\begingroup\$ What does your research indicate? \$\endgroup\$
    – Justme
    Commented Aug 26, 2021 at 15:21
  • \$\begingroup\$ @Justme to be honest, I don't know. I found little information about these standards since they're rather new and not widespread. \$\endgroup\$
    – Zciurus
    Commented Aug 26, 2021 at 20:29
  • \$\begingroup\$ Yes and Yes ...both are bus connections over typically twisted pair wiring.. \$\endgroup\$
    – Jack Creasey
    Commented Aug 27, 2021 at 2:43
  • \$\begingroup\$ @JackCreasey Hi Jack, thanks for the answer. Can you share your source? \$\endgroup\$
    – Zciurus
    Commented Aug 27, 2021 at 6:26
  • 1
    \$\begingroup\$ 10BASE-T1L cannot be used in a bus network. \$\endgroup\$
    – TimB
    Commented Aug 28, 2021 at 3:35

1 Answer 1

Reset to default
3
\$\begingroup\$

10BASE-T1S can be used in a bus network (mixing segment) with up to at least 8 nodes and up to at least 25m. A Physical Layer Collision Avoidance Algorithm (PLCA) is also used in conjunction with the traditional CSMA/CD medium access control to avoid collisions and allow up to 95% network utilization.

10BASE-T1L supports only point-to-point link segments, but up to 1000m.

Source: IEEE 802.3cg-2019 Clauses 146 (10BASE-T1L), 147 (10BASE-T1S), and 148 (Physical Layer Collision Avoidance).

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.