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zx10guy's avatar
zx10guy
Aspirant
Jul 18, 2017

Out of band port on M4300-8x8f

A bit new to Netgear fully managed L3 switches but not new to managed switches in general.  As the subject reads, I just purchased a M4300-8x8f.  I configured the out of band management port and am able to access the switch's CLI and web GUI from my laptop sitting on a different subnet.  Here's the problem that baffles me.  I'm trying to set up SNTP.  Apparently no matter what I do, the switch wants to send traffic through a virtual router interface which is currently set as VLAN 1 for management.  I don't want to do this and want the out of band interface to do SNTP syncs along with other things like SNMP.  I set the source interface for SNTP to be the out of band port and this still doesn't work.  Doing a ping test further reinforces the fact the switch is still trying to send traffic through the virtual router interface on VLAN 1.  Displaying the route table also shows no entries.

 

Am I to assume the out of band management interface is only good for CLI and web GUI access?

 

Thanks for any help.

3 Replies

  • Retired_Member's avatar
    Retired_Member

    Hi zx10guy

     

    Welcome to the community!

    Could you please provide more detailed info as below:

    1. Is SNTP Server and out of band port IP address in same subnet?

    2. Do you set IP for VLAN1?

    3. Do you set default-gateway for VLAN1? Or does VLAN1 get IP and Gateway from DHCP?

     

    By default VLAN1 is worked as Management VLAN, if set IP for VLAN1 and set default gateway for Switch, it will generate one default route with nexthop point to gateway.

     

    In your scenario, you want use out of band for management and control plane service.

    So I suggest you disable vlan routing for VLAN1.

    And then try again.

    Hope it helps!

    Regards,

    EricZ
    NETGEAR employee

    • zx10guy's avatar
      zx10guy
      Aspirant

      EricZ,

       

      Thank you for replying.  The NTP server I'm trying to reach is a NIST NTP server on the internet.  I have quite a few of my network attached hardware pointing to the same server for clock syncs.  I did not configure anything for VLAN1.  It's set for DHCP so there is no IP settings assigned to the virtual interface.  I have also disabled routing for VLAN1 thinking that may be the issue and I still can't reach the NTP server via the out of band port.  It just seems I'm being forced to use a virtual interface on any VLAN for management traffic even though there is an out of band management port available.

       

      If I have to use a virtual interface for SNTP, SNMP, etc for management traffic, I will.  It's just a shame I can't just do all of that off of the out of band port.

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