Switching

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  • 1.  EX4600 command different for ether-options then in EX4200 how to do it.?

    Posted 03-18-2016 11:31

    In my EX4200 I have the following command

     

    set interfaces ge-2/0/36 ether-options 10m

     

    This will not work int he EX4600, what can I do to set speed this way.?

     

    admin@DSOSW01# set interfaces ge-2/0/36 ether-options ?
    Possible completions:
    > 802.3ad              IEEE 802.3ad
    + apply-groups         Groups from which to inherit configuration data
    + apply-groups-except  Don't inherit configuration data from these groups
      asynchronous-notification  Enable sending asynchronous notification to peer on CCC-down
      auto-negotiation     Enable auto-negotiation
    > ethernet-switch-profile  Ethernet virtual LAN/media access control-level options
      flow-control         Enable flow control
      ieee-802-3az-eee     IEEE 802.3az Energy Efficient Ethernet(EEE)
      ignore-l3-incompletes  Ignore L3 incomplete errors
      loopback             Enable loopback
    > mpls                 MPLS options
      no-auto-mdix         Disable auto MDI/MDIX
      no-auto-negotiation  Don't enable auto-negotiation
      no-flow-control      Don't enable flow control
      no-loopback          Don't enable loopback
      no-source-filtering  Don't enable source address filtering
    > source-address-filter  Source address filters
      source-filtering     Enable source address filtering
    


  • 2.  RE: EX4600 command different for ether-options then in EX4200 how to do it.?
    Best Answer

    Posted 03-19-2016 05:30

    Looks like the ex4600 uses the QFX layer two commands.

     

    http://www.juniper.net/documentation/en_US/junos14.1/topics/task/configuration/ten-gigabit-interfaces-qfx-series-cli.html

     

    And the bad news is:  

    • You cannot set the speed on these interfaces.

     

    Configuring the Link Settings for Gigabit Ethernet Interfaces on QFX5100-48S, QFX5100-24Q Switches, and EX4600 Switches

    Devices include a factory default configuration that enables Gigabit Ethernet interfaces with applicable link settings.

    The following default configurations are available on Gigabit Ethernet interfaces:

    • You cannot set the speed on these interfaces.


  • 3.  RE: EX4600 command different for ether-options then in EX4200 how to do it.?

     
    Posted 03-19-2016 07:35

    Yes, EX4600, QFX product line, EX4300, EX9200, any newer switches all use ELS CLI format.  This is covered here:

     

    http://www.juniper.net/documentation/en_US/junos15.1/topics/task/configuration/getting-started-els.html

     

    Any yes for EX4600 ports no-auto-neg is not an option, but should only apply to an interface using TX 10/100/1000 SFP, where auto-neg is generally needed.  When using this configuration, auto-neg on both sides of the link must be used. See (sort of unfinished) discussion here:

     

    http://forums.juniper.net/t5/Ethernet-Switching/EX4600-will-not-work-on-no-auto-negotiation/m-p/281803#M13076

     

    For any other interfaces the speed is set by the type of SFP used (1, 10 or 40) and the interface setting, be it ge, xe, et or 40GE interface broken down to 4 x 10GE with break-out cable.

     

    Hope this helps.



  • 4.  RE: EX4600 command different for ether-options then in EX4200 how to do it.?

    Posted 03-19-2016 15:48

    Well, the problem with using auto-neg for 10/100 links is that there is no real standard and they frequently do not correctly

    negotiate a good link in a cross vendor application.  

     

    I've never had a successful auto-neg 10/100 link come up full speed and duplex between Cisco and Juniper.  Hence the need for turning auto-neg off and setting the speed and duplex explicitly which does work.

     

    I'm really surprised that someone thought this was a good idea to remove.