Network Architecture & Design

Expand all | Collapse all

ESVT does not run with Size Frame bigger than 1518 bytes

  • 1.  ESVT does not run with Size Frame bigger than 1518 bytes

    Posted 05-19-2017 13:19
    Hello all,

    I am using two X770, and I am testing the throughput using the ESVT tool.

    For that test, I enable the jumbo frames in both switches, and create the test vlan to test a 40Gb link.

    If I run the test with a Size Frame of 64 or 1518, it runs fine, and with no problems.

    But, If I increment the size to another value more than 1518 it does not work.

    Do you know if this is a limitation of the tool ESVT?

    I also increase the ip-mtu size of the vlan to 9194, but with no success.

    create vlan test40Gb tag 1040
    configure vlan test40Gb add port 1:101 tagged
    configure vlan test40Gb ipaddress 10.0.40.1/24 (and 10.0.40.2/24 in the other switch)
    enable ipforwarding test40Gb

    enable jumbo-frame ports all
    configure ip-mtu 9194 "test40Gb"

    run esvt traffic-test "test40Gb" loopback-port 1:97 peer-switch-ip 10.0.40.2 packet-size 9000 rate 40 Gbps duration 60 seconds

    ====================================================================================
    VLAN Status Loopback Duration Tx Rate Tx Frame Tx Total Rx Total
    Port (hh??ss) (Kbps) Size Frames Frames
    ====================================================================================
    test40Gb Completed 1:97 00:01:00 40000000 64 3407020474 3407020474
    test40Gb Completed 1:97 00:01:00 40000000 1518 195051038 195051038
    test40Gb Error 1:97 00:01:00 40000000 9000 0 0

    ====================================================================================
    VLAN Name : test40Gb
    Port : 1:101
    IP Address : 10.0.40.2
    Status : Error
    Duration (hh??ss) : 00:01:00
    Loopback Port : 1:97
    TX rate (Kbps) : 40000000
    TX Frame Size (bytes) : 9000
    TX Frame : 0
    RX Frame : 0
    Frames Lost : 0
    Error Cause :



  • 2.  RE: ESVT does not run with Size Frame bigger than 1518 bytes

    Posted 05-19-2017 17:43
    This is a known issue. This should get fixed but it's not currently scoped for any release. https://gtacknowledge.extremenetworks...


  • 3.  RE: ESVT does not run with Size Frame bigger than 1518 bytes

    Posted 05-22-2017 04:48
    Ok understood, thanks for the reply.