set chassis redundancy graceful-switchover set chassis aggregated-devices ethernet device-count 1 set interfaces interface-range VLAN26 member-range ge-0/0/0 to ge-0/0/47 set interfaces interface-range VLAN26 member-range ge-1/0/1 to ge-1/0/46 set interfaces interface-range VLAN26 unit 0 family ethernet-switching interface-mode access set interfaces interface-range VLAN26 unit 0 family ethernet-switching vlan members 26 set interfaces xe-0/1/0 ether-options 802.3ad ae0 set interfaces xe-1/1/0 ether-options 802.3ad ae0 set interfaces xe-1/1/1 unit 0 family ethernet-switching storm-control default set interfaces ae0 aggregated-ether-options minimum-links 1 set interfaces ae0 aggregated-ether-options link-speed 10g set interfaces ae0 unit 0 family ethernet-switching interface-mode trunk set interfaces ae0 unit 0 family ethernet-switching vlan members 7 set interfaces ae0 unit 0 family ethernet-switching vlan members 21-26 set interfaces ae0 unit 0 family ethernet-switching vlan members 100-101 set interfaces ae0 unit 0 family ethernet-switching vlan members 212 set interfaces ae0 unit 0 family ethernet-switching vlan members 2028 set interfaces irb unit 21 family inet address 192.168.21.21/24 set forwarding-options storm-control-profiles default all set routing-options nonstop-routing set routing-options static route 0.0.0.0/0 next-hop 192.168.21.1 set protocols lldp interface all set protocols lldp-med interface all set protocols igmp-snooping vlan USERS-26 set protocols layer2-control nonstop-bridging set protocols rstp interface all set switch-options interface-mac-limit 10 set switch-options interface-mac-limit packet-action drop-and-log set switch-options interface ae0.0 interface-mac-limit 16383 set switch-options interface ae0.0 interface-mac-limit disable set virtual-chassis no-split-detection set virtual-chassis member 0 mastership-priority 255 set virtual-chassis member 1 mastership-priority 250 set vlans USERS-26 vlan-id 26 set vlans default vlan-id 1
Have this configuration on Juniper EX2300
After connecting an unmanaged switch to port ge-1/0/20, the EX2300 switch became unavailable remotely. Through the console in place you could see the following logs
Jan 1 04:00:14 ex2300 l2ald[4656]: L2ALD_MAC_LIMIT_EXCEEDED_IF: Limit on learned MAC addresses exceeded for ge-1/0/20.0; current count is 10 DROPPING THE PACKET with mac address: 1c:1b:0d:5b:7f:a7 Jan 1 04:00:14 ex2300 l2ald[4656]: L2ALD_MAC_LIMIT_EXCEEDED_IF: Limit on learned MAC addresses exceeded for ge-1/0/20.0; current count is 10 DROPPING THE PACKET with mac address: 54:a0:50:79:c2:ac Jan 1 04:00:14 ex2300 l2ald[4656]: L2ALD_MAC_LIMIT_EXCEEDED_IF: Limit on learned MAC addresses exceeded for ge-1/0/20.0; current count is 10 DROPPING THE PACKET with mac address: 94:de:80:ad:68:43 Jan 1 04:00:14 ex2300 l2ald[4656]: L2ALD_MAC_LIMIT_EXCEEDED_IF: Limit on learned MAC addresses exceeded for ge-1/0/20.0; current count is 10 DROPPING THE PACKET with mac address: e0:d5:5e:03:73:88
EX2300> show spanning-tree statistics interface detail
Interface BPDUs BPDUs Next BPDU TCs Proposal Agreement
Sent Received Transmission Tx/Rx Tx/Rx Tx/Rx
ae0 1617 163374 0 0/0 0/0 0/0
ge-0/0/0 165592 0 1 0/0 0/0 0/0
ge-0/0/1 165591 0 1 0/0 0/0 0/0
ge-0/0/2 165623 0 0 0/0 0/0 0/0
ge-0/0/3 165581 0 1 0/0 0/0 0/0
ge-0/0/4 165598 0 1 0/0 0/0 0/0
ge-0/0/5 165597 0 0 0/0 0/0 0/0
ge-0/0/6 0 0 0 0/0 0/0 0/0
ge-0/0/7 0 0 0 0/0 0/0 0/0
ge-0/0/8 165604 0 0 0/0 0/0 0/0
ge-0/0/9 0 0 0 0/0 0/0 0/0
ge-0/0/10 165586 0 1 0/0 0/0 0/0
ge-0/0/11 165443 0 1 0/0 0/0 0/0
ge-0/0/12 165565 0 1 0/0 0/0 0/0
ge-0/0/13 165586 0 0 0/0 0/0 0/0
ge-0/0/14 165553 0 0 0/0 0/0 0/0
ge-0/0/15 0 0 0 0/0 0/0 0/0
ge-0/0/16 0 0 0 0/0 0/0 0/0
ge-0/0/17 0 0 0 0/0 0/0 0/0
ge-0/0/18 0 0 0 0/0 0/0 0/0
ge-0/0/19 165612 0 0 0/0 0/0 0/0
ge-0/0/20 0 0 0 0/0 0/0 0/0
ge-0/0/21 0 0 0 0/0 0/0 0/0
ge-0/0/22 0 0 0 0/0 0/0 0/0
ge-0/0/23 0 0 0 0/0 0/0 0/0
ge-0/0/24 165614 0 1 0/0 0/0 0/0
ge-0/0/25 165609 0 1 0/0 0/0 0/0
ge-0/0/26 165623 0 1 0/0 0/0 0/0
ge-0/0/27 165590 0 0 0/0 0/0 0/0
ge-0/0/28 165602 0 0 0/0 0/0 0/0
ge-0/0/29 165613 0 0 0/0 0/0 0/0
ge-0/0/30 165635 0 0 0/0 0/0 0/0
ge-0/0/31 165589 0 1 0/0 0/0 0/0
ge-0/0/32 165592 0 0 0/0 0/0 0/0
ge-0/0/33 165575 0 1 0/0 0/0 0/0
ge-0/0/34 165609 0 0 0/0 0/0 0/0
ge-0/0/35 0 0 0 0/0 0/0 0/0
ge-0/0/36 165572 0 0 0/0 0/0 0/0
ge-0/0/37 165629 0 1 0/0 0/0 0/0
ge-0/0/38 165497 0 0 0/0 0/0 0/0
ge-0/0/39 165605 0 0 0/0 0/0 0/0
ge-0/0/40 0 0 0 0/0 0/0 0/0
ge-0/0/41 0 0 0 0/0 0/0 0/0
ge-0/0/42 0 0 0 0/0 0/0 0/0
ge-0/0/43 165607 0 1 0/0 0/0 0/0
ge-0/0/44 165610 0 0 0/0 0/0 0/0
ge-0/0/45 0 0 0 0/0 0/0 0/0
ge-0/0/46 165609 0 1 0/0 0/0 0/0
ge-0/0/47 165615 0 1 0/0 0/0 0/0
ge-1/0/0 0 0 1 0/0 0/0 0/0
ge-1/0/1 0 0 1 0/0 0/0 0/0
ge-1/0/2 0 0 1 0/0 0/0 0/0
ge-1/0/3 0 0 1 0/0 0/0 0/0
ge-1/0/4 165680 0 0 0/0 0/0 0/0
ge-1/0/5 0 0 0 0/0 0/0 0/0
ge-1/0/6 0 0 0 0/0 0/0 0/0
ge-1/0/7 0 0 0 0/0 0/0 0/0
ge-1/0/8 165655 0 1 0/0 0/0 0/0
ge-1/0/9 165689 0 1 0/0 0/0 0/0
ge-1/0/10 0 0 1 0/0 0/0 0/0
ge-1/0/11 143830 0 1 0/0 0/0 0/0
ge-1/0/12 165678 0 1 0/0 0/0 0/0
ge-1/0/13 0 0 1 0/0 0/0 0/0
ge-1/0/14 0 0 1 0/0 0/0 0/0
ge-1/0/15 0 0 1 0/0 0/0 0/0
ge-1/0/16 0 0 1 0/0 0/0 0/0
ge-1/0/17 165660 0 1 0/0 0/0 0/0
ge-1/0/18 165681 0 1 0/0 0/0 0/0
ge-1/0/19 0 0 1 0/0 0/0 0/0
ge-1/0/20 205827 2099073 1 0/0 0/0 0/0
ge-1/0/21 138185 0 1 0/0 0/0 0/0
ge-1/0/22 165648 0 0 0/0 0/0 0/0
ge-1/0/23 48073 0 1 0/0 0/0 0/0
ge-1/0/24 165690 0 0 0/0 0/0 0/0
ge-1/0/25 0 0 0 0/0 0/0 0/0
ge-1/0/26 165652 0 1 0/0 0/0 0/0
ge-1/0/27 165692 0 0 0/0 0/0 0/0
ge-1/0/28 0 0 0 0/0 0/0 0/0
ge-1/0/29 165677 0 1 0/0 0/0 0/0
ge-1/0/30 165636 0 1 0/0 0/0 0/0
ge-1/0/31 165666 0 1 0/0 0/0 0/0
ge-1/0/32 165691 0 0 0/0 0/0 0/0
ge-1/0/33 165691 0 1 0/0 0/0 0/0
ge-1/0/34 0 0 1 0/0 0/0 0/0
ge-1/0/35 0 0 1 0/0 0/0 0/0
ge-1/0/36 0 0 1 0/0 0/0 0/0
ge-1/0/37 165671 0 1 0/0 0/0 0/0
ge-1/0/38 0 0 1 0/0 0/0 0/0
ge-1/0/39 0 0 1 0/0 0/0 0/0
ge-1/0/40 0 0 1 0/0 0/0 0/0
ge-1/0/41 0 0 1 0/0 0/0 0/0
ge-1/0/42 0 0 1 0/0 0/0 0/0
ge-1/0/43 0 0 1 0/0 0/0 0/0
ge-1/0/44 0 0 1 0/0 0/0 0/0
ge-1/0/45 0 0 1 0/0 0/0 0/0
ge-1/0/46 0 0 1 0/0 0/0 0/0
ge-1/0/47 0 0 1 0/0 0/0 0/0
What could be the reason for not shutting down the port ge-1/0/20 on the EX2300?