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PTP on 2930M: Invalid input (with no flexible modules)

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  • 1.  PTP on 2930M: Invalid input (with no flexible modules)

    Posted Mar 25, 2020 04:32 AM

    The issue we experience is very similar to the one reported here, except we do not have any flexible modules:


    https://community.arubanetworks.com/t5/Wired-Intelligent-Edge-Campus/PTP-on-2930M-Invalid-input-ptp/td-p/617541

     

    We are attempting to enable PTP (precision time protocol) on Aruba-2930M-40G-8SR-PoE+ without any extra modules installed, with all factory settings (except for IP and Mask) untouched.

     

    Configuration report:

     

    Aruba-2930M-40G-8SR-PoEP# show config

Startup configuration: 7

; JL323A Configuration Editor; Created on release #WC.16.07.0003
; Ver #14:01.4f.f8.1d.9b.3f.bf.bb.ef.7c.59.fc.6b.fb.9f.fc.ff.ff.37.ef:02

hostname "Aruba-2930M-40G-8SR-PoEP"
module 1 type jl323a
snmp-server community "public" unrestricted
oobm
   ip address dhcp-bootp
   exit
vlan 1
   name "DEFAULT_VLAN"
   untagged 1-48
   ip address 192.168.0.100 255.255.255.0
   ipv6 enable
   ipv6 address dhcp full
   exit
spanning-tree

     

    The issue:

     

    Aruba-2930M-40G-8SR-PoEP# ptp enable
Invalid input: ptp
Aruba-2930M-40G-8SR-PoEP# show ptp
Invalid input: ptp

     

    All attempts to do anything related to ptp result in "Invalid input: ptp". Switch is connected to one machine via ethernet cable. CLI over usb cable or over ethernet cable makes no difference.

     

    Curiously, we have the exact same software version (WC.16.07.0003) reported in the link above. Is it known to have such an issue? Maybe there are versions known to have ptp configurable and working correctly, so that picking another one is less of a shot in dark?



  • 2.  RE: PTP on 2930M: Invalid input (with no flexible modules)

    MVP GURU
    Posted Mar 25, 2020 05:32 AM

    do you have try on config mode ? (and also to remove flexible module like on the other link)

     

    it will be a good idea also to upgrade



  • 3.  RE: PTP on 2930M: Invalid input (with no flexible modules)

    Posted Mar 25, 2020 06:37 AM

    Yes, in config mode response is exactly the same "invalid input: ptp". There were never any modules attached, and the provided above configuration report does not list any. The only "extra" module is a single power supply.

     

    We will certainly test newer software versions. However, even if the switch would give a formal confirmation that ptp is "enabled" on another version, we would have uncertainty that the transparent clock functionality actually works on that version. This is why we are interested which software versions were actually verified to provide packet delay adjustments.

     



  • 4.  RE: PTP on 2930M: Invalid input (with no flexible modules)

    Posted Mar 26, 2020 10:12 AM

    Updating software to WC.16.10.0005 (or downgrading to WC.16.04.0011) does nothing:

     

    Aruba-2930M-40G-8SR-PoEP# show config

Startup configuration: 7

; JL323A Configuration Editor; Created on release #WC.16.10.0005
; Ver #14:27.6f.f8.1d.9b.3f.bf.bb.ef.7c.59.fc.6b.fb.9f.fc.ff.ff.37.ef:04

hostname "Aruba-2930M-40G-8SR-PoEP"
module 1 type jl323a
snmp-server community "public" unrestricted
oobm
   ip address dhcp-bootp
   exit
vlan 1
   name "DEFAULT_VLAN"
   untagged 1-48
   ip address 192.168.0.100 255.255.255.0
   ipv6 enable
   ipv6 address dhcp full
   exit
spanning-tree

Aruba-2930M-40G-8SR-PoEP# ptp enable
Invalid input: ptp
Aruba-2930M-40G-8SR-PoEP# show ptp
Invalid input: ptp

Aruba-2930M-40G-8SR-PoEP(config)# ptp enable
Invalid input: ptp
Aruba-2930M-40G-8SR-PoEP(config)# show ptp
Invalid input: ptp

Aruba-2930M-40G-8SR-PoEP(eth-1-48)# ptp enable
Invalid input: ptp
Aruba-2930M-40G-8SR-PoEP(eth-1-48)# show ptp
Invalid input: ptp

     



  • 5.  RE: PTP on 2930M: Invalid input (with no flexible modules)
    Best Answer

    EMPLOYEE
    Posted Mar 26, 2020 12:45 PM

    Greetings!

     

    PTP is supported on the following 2930M switch models:

     

    • Aruba 2930M 24G 1-slot Switch (JL319A)
    • Aruba 2930M 24G PoE+ 1-slot Switch (JL320A)
    • Aruba 2930M 48G 1-slot Switch (JL321A)
    • Aruba 2930M 48G PoE+ 1-slot Switch (JL322A)

    PTP is not supported on 2930M models with built-in Smart Rate ports, due to internal port hardware differences; we are working on getting our documentation updated to clearly note these model limitations.