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EX4650 outage after interting sfp28 transceivers

  • 1.  EX4650 outage after interting sfp28 transceivers

    Posted 10-27-2024 10:15

    Hi

    This issue might sound weird 

    admin@Cloud_Optic_EX4650_SH> show virtual-chassis 

    Preprovisioned Virtual Chassis
    Virtual Chassis ID: 407b.4669.becf
    Virtual Chassis Mode: Enabled
                                                    Mstr           Mixed Route Neighbor List
    Member ID  Status   Serial No    Model          prio  Role      Mode  Mode ID  Interface
    0 (FPC 0)  Prsnt    XH0123456789 ex4650-48y-8c  129   Master*      N  VC   1  vcp-255/0/54
                                                                               1  vcp-255/0/55
    1 (FPC 1)  Prsnt    XH1012345678 ex4650-48y-8c  129   Backup       N  VC   0  vcp-255/0/54
                                                                               0  vcp-255/0/55

    {master:0}
    admin@Cloud_Optic_EX4650_SH> show version 
    localre:
    --------------------------------------------------------------------------
    Hostname: Cloud_Optic_EX4650_SH
    Model: ex4650-48y-8c
    Junos: 20.2R3-S1.3 flex

    Some of the interfaces are configured to be 25g interfaces and some not

    set chassis fpc 0 pic 0 port 20 speed 25g
    set chassis fpc 0 pic 0 port 24 speed 25g
    set chassis fpc 1 pic 0 port 20 speed 25g
    set chassis fpc 1 pic 0 port 24 speed 25g

    Last week we've inserted sfp28 transceivers into 10g interfaces that are not configured to be 25g interfaces, and suddenly, a network outage, that could not  be explained.

    Servers went down and up again

    Some MAC addresses was being learned and some not

    Slowness in the network, and more

    We tried at first to configure those interfaces to be 25g as follows:

    set chassis fpc 0 pic 0 port 28 speed 25g
    set chassis fpc 0 pic 0 port 32 speed 25g
    set chassis fpc 1 pic 0 port 28 speed 25g
    set chassis fpc 1 pic 0 port 32 speed 25g

    But it did not help

    We sow no error messages in show var log messages

    The only solution was to reboot the all the virtual chassis

    TAC support is refusing to help because version 20 is not supported anymore

    We searched the prsearch and found nothing

    We will be more than glad to upgrade but only to be sure that this is a known issue and we're upgrading to a software that fixed this issue

    Anyone has came across this?



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    Abed AL-Rahman Bishara
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