DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide 
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Log Description  Severity 
Event description: Link Aggregation Group link down. 
Log Message: Link Aggregation Group <group_id> link down. 
Parameters description: 
group_id: The group id of the link down aggregation group. 
Informational 
Event description: Member port attach to Link Aggregation Group. 
Log Message: <ifname> attach to Link Aggregation Group <group_id>. 
Parameters description: 
Ifname: The interface name of the port that attach to aggregation group. 
group_id: The group id of the aggregation group that port attach to. 
Informational 
Event description: Member port detach from Link Aggregation Group. 
Log Message: <ifname> detach from Link Aggregation Group <group_id>. 
Parameters description: 
Ifname: The interface name of the port that detach from aggregation group. 
group_id: The group id of the aggregation group that port detach from. 
Informational 
 
LBD 
Log Description  Severity 
Event Description: Loop back is detected under port-based mode. 
Log Message: 
IfInfo LBD loop occurred. 
Parameters Description: 
IfInfo: The interface info. 
Critical 
Event Description: Port recovered from LBD blocked state under port-based mode. 
Log Message: 
IfInfo LBD loop recovered. 
Parameters Description: 
IfInfo: The interface info. 
Critical 
Event Description: Loop back is detected under VLAN-based mode. 
Log Message: 
IfInfo VID <vlanID> LBD loop occurred. 
Parameters Description: 
IfInfo: The interface info. 
vlanID: The VLAN ID number. 
Critical 
Event Description: Port recovered from LBD blocked state under VLAN-based mode. 
Log Message: 
IfInfo VID <vlanID> LBD loop recovered. 
Parameters Description: 
IfInfo: The interface info. 
vlanID: The VLAN ID number. 
Critical 
Event Description: The number of VLANs that loop back has occurred hit the specified 
number. 
Log Message: 
Loop VLAN numbers overflow. 
Parameters Description: 
None 
Critical