Data Center

Reply
New Contributor

2930M PTP 1588 precision timing compatibility

The 2930M configuration guide states:

• IEEE 1588 end-to-end transparent mode cannot be enabled when there are flexible modules or transceiver ports in the system that do not support IEEE 1588. If a user attempts this, an error message like the following displays: Port A1 does not support IEEE 1588 end-to-end transparent mode.Use the command show ptp to identify the unsupported ports.
• IEEE 1588 end-to-end transparent mode cannot be enabled on a stack. If the user attempts this, an error message like the following displays: IEEE 1588 end-to-end transparent mode cannot be enabled when stacking is enabled.
• IEEE 1588 end-to-end transparent mode must be enabled or disabled on all ports at the same time.
• MACsec cannot be enabled when IEEE 1588 end-to-end transparent mode is enabled.
• IEEE 1588 end-to-end transparent mode cannot be enabled when MACsec is enabled

I can’t find any information as to what modules/transceivers do and don’t support the 1588v2 protocol.

We need to do a multiple 1G over 10G backhaul to multiple 1G link that supports ptp end to end transparency.
MVP Expert

Re: 2930M PTP 1588 precision timing compatibility

Interesting question...I'm not totally sure those statements (particularly the very first one) are related to Transceivers or really only ports dedicated to Transceivers (that can host Transceivers).

Highlighted
New Contributor

Re: 2930M PTP 1588 precision timing compatibility

The first statement suggests there are flexible modules and transceiver modules that do and don't suport 1588 e2e mode. Further specs on these modules are nowhere to be found. 

 

We are researching for a video over IP solution and all broadcast related solutions are requiring PTP compatible switches. Maybe it's time the manufacturers starten documenting their PTP features sets and compatbile solutions a little bit more from a system perspective. So far Cisco seems to do a little bit better job at this.