Switching

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Ask questions and share experiences about EX and QFX portfolios and all switching solutions across your data center, campus, and branch locations.
  • 1.  QFX5120 Basic Config To Forward Traffic

    Posted 29 days ago

    I am new to JunOS and the Juniper line of switches.

    I selected a QFX5120-48Y to use as the switch for a SAN solution, very basic with a 6 ESXi hosts and a local SAN device.  I am not having any data flow from the ESXi host to the SAN through the QFX.

    There is no doubt I do not have the correct configuration on the QFX to facilitate traffic.  At this point I would be just fine with a non-VLAN configuration to get one of the hosts to be able to connect to see the SAN.  I am unable to ping from the ESXi adapter to the SAN.

    At this time I just need the commands to config the QFX to pass the traffic.

    Thanks much,

    Keith



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    KEITH WHITEHEAD
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  • 2.  RE: QFX5120 Basic Config To Forward Traffic

    Posted 29 days ago

    For a set of ports to be a simple layer 2 untagged access domain you would need two steps.

    Create the vlan

    set vlans <vlan-name> vlan-id <vlan-id (1..4095)>

    and add all the ports to the vlan in access mode

    set interfaces ge-0/0/ <port#> .0 family ethernet-switching interface-mode access vlan members <vlan-name>

    The tagged process is similar and both are outlined here.

    https://supportportal.juniper.net/s/article/EX-QFX-Example-Configuring-VLANS-and-Trunking



    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
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  • 3.  RE: QFX5120 Basic Config To Forward Traffic

    Posted 22 days ago

    Yes that seems to get things talking, thank you.  However it is defaulting to 10G (ten).

    How do I go about increasing the port speed to 25G.

    The SAN and hosts both have 25G ports.  



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    KEITH WHITEHEAD
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  • 4.  RE: QFX5120 Basic Config To Forward Traffic

    Posted 22 days ago

    For ports with multiple settings they need to be configured per the fpc and port location per platform.  Looks like the general command on the QFX is like this

    set chassis fpc slot-number port port-number 25G

    You need to find your specific model and commands here.

    https://www.juniper.net/documentation/us/en/software/junos/interfaces-ethernet-switches/topics/topic-map/switches-interface-port.html#id-channelizing-interfaces-on-qfx5120-32c-switches

    After the port is enabled xe is used for 10G ports and et is used for all higher speeds.  The top of the document outlines how the three numbers in the interface are determined for fpc/pic/port on the switch.



    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
    ------------------------------