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BPDU's not sent on ae interface

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  • 1.  BPDU's not sent on ae interface

    Posted 01-14-2020 16:14


    I've configured a standalone EX2300 with an ae interface, which connects to an EX-series virtual chassis.

    This switch only has one ae uplink (with two interfaces), no other uplinks to any other switches.


    When I bring up the interface it sends 3 or 4 BPDU's, and then stops. It receives plenty of BPDU's, but won't send them.


    Any ideas?



    xe-0/1/0 and 0/1/1:

    ether-options {
        802.3ad ae0;

    chassis config:

    aggregated-devices {
        ethernet {
            device-count 2;


    description Uplink;
    unit 0 {
        family ethernet-switching {
            interface-mode trunk;
            vlan {
                members all;



     show spanning-tree statistics interface ae0
    Interface     BPDUs       BPDUs        Next BPDU       TCs        Proposal    Agreement
                  Sent        Received     Transmission    Tx/Rx      Tx/Rx       Tx/Rx
    ae0              4          34             0           0/0         0/0         4/0


  • 2.  RE: BPDU's not sent on ae interface
    Best Answer

    Posted 01-14-2020 16:21

    It appears I've been silly...


    This is an RSTP root port, and root ports do not continually send BPDU's like a designated port will.

    So, there's no issue after all!