Hello all, I have an issue with a N1548 (Firm6.3.2.6)switch connected to a Fortigate firewall through a 2 port LAG, one of the ports at the SW is going down with an interval of 1 minute or less, no changes were made over the network in the last 2 weeks.
I see via SNMP that the lag traffic goes 100% or more, I cannot explain why.
Has it happened to someone?
The log at the SW:
DOT3AD[dot3ad_core_lac]: dot3ad_db.c(1014) 187202 %% Interface Gi1/0/6 detached from ch52.
TRAPMGR[trapTask]: traputil.c(721) 187201 %% Link on Gi1/0/6 is failed
TRAPMGR[trapTask]: traputil.c(721) 187200 %% Link Down: Gi1/0/6
DOT3AD[dot3ad_core_lac]: dot3ad_db.c(951) 187198 %% Interface Gi1/0/6 attached to ch52.
TRAPMGR[trapTask]: traputil.c(721) 187197 %% Link Up: Gi1/0/6
TRAPMGR[trapTask]: traputil.c(721) 187195 %% Link on Gi1/0/6 is failed
TRAPMGR[trapTask]: traputil.c(721) 187194 %% Link Down: Gi1/0/6
TRAPMGR[trapTask]: traputil.c(721) 187192 %% Link Up: Gi1/0/6
The config:
interface Gi1/0/5
channel-group 52 mode active
spanning-tree disable
spanning-tree guard loop
exit
interface Gi1/0/6
channel-group 52 mode active
spanning-tree disable
spanning-tree guard loop
exit
interface port-channel 52
switchport mode trunk
switchport trunk allowed vlan 1,20,30,100,172
Thanks in advance whoever can help me out!
Regards!