Ethernet Switching
Ethernet Switching

BPDU's not sent on ae interface

‎01-14-2020 04:13 PM


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


Ethernet Switching
Accepted by topic author Luke Robertson
‎01-14-2020 04:21 PM

Re: BPDU's not sent on ae interface

‎01-14-2020 04:21 PM

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!