ExtremeSwitching (EXOS)

  • 1.  lacp in x460-24t

    Posted 05-25-2016 07:04
    hi ,
    i am using X460-24t extreme switch.
    here is my setup

    mydevice with two links configured in lacp mode --- extreme switch port 3
    |
    |
    extreme switch port4
    I have set vlan 3001 on port 3 as tagged with ip 172.16.254.1 . I run ping to it from my device with ip 172.16.254.2 .
    I want to set lacp on port 3(master) and 4.
    so , I ran
    # enable sharing 3 grouping 3,4 algorithm address-based lacp
    Question 1) had I used #enable sharing 3 grouping 3,4 lacp , what would be the difference ?
    Question 2) Any specific command to see port sharing status ?


  • 2.  RE: lacp in x460-24t

    Posted 05-25-2016 07:15
    I let others answer (1), but as to (2): "show sharing"


  • 3.  RE: lacp in x460-24t

    Posted 05-25-2016 07:22
    Q1: if you didn't use any address-based option (or) "address-based lacp" without specifying any algorithm like L3, L3_L4 and custom then default L2 algorithm will get set. So both CLI would result in no difference.

    Q2: "show port sharing" command you can check the "Aggregator member" status


  • 4.  RE: lacp in x460-24t

    Posted 05-25-2016 08:11
    You can use "show lacp lag


  • 5.  RE: lacp in x460-24t

    Posted 05-25-2016 08:39


  • 6.  RE: lacp in x460-24t

    Posted 05-25-2016 08:43
    got it .

    Please correct me if I am wrong .
    This is what I understand of LACP.
    As told above
    I think switch copies vlan setting of LACP master to other members of group.
    Say my device has two ports named 3 and 4 connected to port 3 and 4 of extreme switch such that 3 is master and port 4 cable is unplugged.
    Currently my device is pinging through 3.
    Now I connect port 4 to 4 of device and then remove cable from port 3 .
    The ping should not stop.
    BTW is there any master slave concept like my device should be configured as LACP slave ?


  • 7.  RE: lacp in x460-24t

    Posted 05-25-2016 09:01
    Hello Sumeet,

    you are right that you configure the master port (VLAN, etc.) only, those settings are applied to all ports in the port sharing (rather to a logical port consisting of some physical ports).

    If you disconnect and reconnect individual ports in a sharing, some packets may be lost, but a ping should resume.

    Both LACP partner devices are configured the same, LACP does not use a master/slave configuration.

    Br,
    Erik


  • 8.  RE: lacp in x460-24t

    Posted 05-25-2016 09:07
    as soon as I enable sharing .
    my ping stops .
    I tried
    #show vlan3001
    got
    Ports: 1. (Number of active ports=1) Tag: *3gb
    Flags: (*) Active, (!) Disabled, (g) Load Sharing port
    (b) Port blocked on the vlan, (m) Mac-Based port

    Don't know what blocked indicates ?


  • 9.  RE: lacp in x460-24t

    Posted 05-25-2016 09:10
    If it works w/o sharing, but stops with sharing enabled (on one side), the other side seems not to use LACP. The "blocked" indicates that the port sharing is not active.


  • 10.  RE: lacp in x460-24t

    Posted 05-26-2016 03:59
    turns you my device has static LAG support without lacp .
    What change should I do in extreme switch setting for this ?


  • 11.  RE: lacp in x460-24t

    Posted 05-26-2016 04:11
    You can just take out 'lacp' at the end of the sharing command.

    # disable sharing 3
    # enable sharing 3 grouping 3,4 algorithm address-based