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Discard Rx count increases on layer 2 switch.

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  • 1.  Discard Rx count increases on layer 2 switch.

    Posted Sep 08, 2021 08:05 AM

    CG-DL-1-HSWD-1 is the layer 3 switch( 2930F-48G-4SFP+)
    CG-DL-1-HSWB-30 is the layer 2 switch(Aruba 2530 8 Switch )

    CG-DL-1-HSWB-30's port 25 --->connects to CG-DL-1-HSWD-1's 1/30

    Both the ports are tunk.

    We are observing Discard Rx on the port 25 of CG-DL-1-HSWB-30.Can anyone help me to investigate on this.

    CG-DL-1-HSWB-30# sh int 25

    Status and Counters - Port Counters for port 25

    Name : Connectoin to CG-DL-1-HSWD-1|Port:1/30
    MAC Address : f860f0-1f2227
    Link Status : Up
    Port Enabled : Yes
    Totals (Since boot or last clear) :
    Bytes Rx : 347,920,023 Bytes Tx : 3,144,144,213
    Unicast Rx : 9,417,596 Unicast Tx : 10,534,700
    Bcast/Mcast Rx : 13,249,755 Bcast/Mcast Tx : 216,477
    Errors (Since boot or last clear) :
    FCS Rx : 0 Drops Tx : 0
    B/Mcast Rx (Pkts/sec) : 9 B/Mcast Tx (Pkts/sec) : 0
    Runts Rx : 0 Late Colln Tx : 0
    Giants Rx : 0 Excessive Colln : 0
    Total Rx Errors : 0 Deferred Tx : 0
    Others (Since boot or last clear) :
    Discard Rx : 5,462,895 Out Queue Len : 0
    Unknown Protos : 0
    Rates (5 minute weighted average) :
    Total Rx (bps) : 16,120 Total Tx (bps) : 16,576
    Unicast Rx (Pkts/sec) : 5 Unicast Tx (Pkts/sec) : 6
    Utilization Rx : 0 % Utilization Tx : 0 %


    Below the port config on both the switch.

    ------------------------------CG-DL-1-HSWB-30---------------------------------------------
    CG-DL-1-HSWB-30# sh running-config interface 25

    Running configuration:

    interface 25
    name "Connectoin to CG-DL-1-HSWD-1|Port:1/30"
    untagged vlan 1
    trunk trk1 lacp
    exit

    CG-DL-1-HSWB-30# sh running-config interface trk25
    Module not present for port or invalid port: trk25
    CG-DL-1-HSWB-30# sh running-config interface trk1

    Running configuration:

    interface Trk1
    tagged vlan 100,110,120,247
    untagged vlan 1
    spanning-tree priority 4
    exit

    ---------------------------------CG-DL-1-HSWD-1------------------------------------------
    CG-DL-1-HSWD-1# sh running-config interface trk30

    Running configuration:

    interface Trk30
    tagged vlan 100,110,120,247
    untagged vlan 1
    spanning-tree priority 4
    exit

    CG-DL-1-HSWD-1# sh running-config interface 1/30

    Running configuration:

    interface 1/30
    untagged vlan 1
    trunk trk30 lacp
    exit
    ---------------------------------------------------------------------------


    #Port
    #wireless


  • 2.  RE: Discard Rx count increases on layer 2 switch.

    EMPLOYEE
    Posted Sep 10, 2021 04:43 AM

    Hello,

     

    What is the running software version in the device?

     

    Have you tried to replace or swap the tranceiver?

     

    Is Jumbo frame enabled?

     

     

    Thanks!