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  • 1.  802.1x EX3300

    Posted 12-01-2021 05:46

    Hello experts,

    we need to enable 802.1x authentication on ex3300 switches, of which we have a lot. The switches have the recommended version Junos 12.3R12-S15 We use a configuration with supplicant multiple and mac radius. see part of configuration:
    vitsol@sw-B6# show protocols dot1x
    authenticator {
            authentication-profile-name PacketFence
             interface {
                     ge-0/0/0.0 {
                              supplicant multiple;

    I had to turn off VSTP for authentication to work , when I used VSTP, the users the switch was continuously sending requests to RADIUS server and the switch didn´t accespt RADIUS answer. When I switch off VSTP the authentication worked properly 3 months and now switch cannot authenticate printers. I get error message:

    Nov 30 07:51:26.543756 queried vid:12

    Nov 30 07:51:26.543800 CreateSession: MAX mem usage limit for sessions exceeded. Skipping Auth For MAC: -.

    It seems that some buffer is full. Does somebody know where is problem?