I have a number of HP 1920 switches.
The interconnects between the switches are configured with the following:
loopback-detection enable
loopback-detection control enable
loopback-detection per-vlan enable
Every so often I am getting the following in my syslog server which are both log entries and SNMP traps...
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 1 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 2 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 5 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 3 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 51 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 56 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 55 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 53 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 52 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 4 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 59 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 58 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 64 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 200 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 65 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18972672 GigabitEthernet1/0/25 in VLAN 57 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:52 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/25 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 51 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 3 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 52 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 56 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 55 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 2 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 53 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 4 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 1 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 5 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 63 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 64 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/RECOVERED(t) Trap 1.3.6.1.4.1.25506.2.95.1.0.4: Loopback on the interface 18976768 GigabitEthernet1/0/26 in VLAN 57 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
Aug 1 10:01:53 192.168.100.9 2016 local7 notice SWITCH-05 %%10LPDETECT/5/LPDETECT_RECOVERED(l): Loopback on GigabitEthernet1/0/26 recovered.
It is effectivly a fully meshed LAN with two ports on each switch being connetected to other switches. MSTP is all configured and working ok but we get these errors on different switches every 7-10 days and when it occurs in office hours it causes issues.
Dos anyone know what would cause these and if there is a way of preventing users losing connectivity?
Thanks
Steve