SOC/4/hwBaseArpVlanCarEnhanceTrap_active

Message

SOC/4/hwBaseArpVlanCarEnhanceTrap_active: ARP VLAN CAR became effective on an interface, which was probably due to a loop on the interface. (Logical Interface = [LogicalInterface], Physical Interface = [PhysicalInterface], Pe-Vlan = [PeVlan], Ce-Vlan = [CeVlan], Sample Rate = [SampleRate])

Description

ARP VLAN CAR took effect, indicating that a loop or attack occurred on the interface.

Parameters

Parameter Name	Parameter Meaning
LogicalInterface	Logical interface.
PhysicalInterface	Physical interface.
PeVlan	Outer VLAN ID.
CeVlan	Inner VLAN tag.
SampleRate	Rate at which packets are sampled, in pps.

Possible Causes

A loop or attack occurred on the interface.

Procedure

1. Obtain interface information based on the alarm information.

2. Check whether Layer 2 loops occur based on the physical link status and configurations.

If a loop occurs, go to Step 3.
If no loops occur, go to Step 4.

3. Locate the fault and remove loops. Check whether alarms are cleared.

If the alarm is cleared, go to Step 6.
If the alarm persists, go to Step 4.

4. Run the arp rate-limit command to adjust the ARP VLAN CAR.

5. Collect alarm, log, and configuration information, and contact technical support personnel.

6. End.