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Alarm Handling

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of alarms on the product.
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L3MB_1. hwBoardL3FwdResLack

L3MB_1. hwBoardL3FwdResLack


L3MB/4/FwdResLack:OID [OID] The layer 3 resource usage has reached or exceeded [Threshold]%.(EntPhysicalindex=[GAUGE],EntPhysicalName=[OCTET],Slot=[OCTET],ResourceType=[INTEGER])

The Layer 3 resource usage reached or exceeded the upper threshold. Except IPv4 route prefix entries, all Layer 3 resources have an upper usage threshold of 85%.


You can use the fib threshold-alarm command to set the upper usage threshold of IPv4 route prefix entries.

By default, the upper usage threshold of the IPv4 route prefix entries is 85%.

The LE1D2S04SEC0, LE1D2X32SEC0 and LE1D2H02QEC0 cards, and X series cards do not support this alarm.


Alarm ID Alarm Severity Alarm Type Warning equipmentAlarm(5)


Name Meaning
OID Indicates the MIB object ID of the alarm.
Threshold Indicates the upper threshold of the layer 3 resource usage.
EntPhysicalindex Indicates the index of the physical entity.
EntPhysicalName Indicates the name of the physical entity.
Slot Indicates the slot ID.
ResourceType Indicates the ID of a Layer 3 resource.
  • hostTablePrefixTable(27) indicates the host route prefix entry.
  • routingTablePrefixTable(28) indicates the IPv4 route prefix entry.
  • ecmpNextHopTable(29) indicates the next hop entry of the equal-cost route.
  • layer3InterfaceTable(30) indicates the Layer 3 outbound interface entry.
  • nextHopTable(31) indicates the next hop entry.
  • tunnelDecapsulationTable(32) indicates the tunnel encapsulation and decapsulation entry.
  • ipv6RoutingTablePrefixTable(47) indicates the IPv6 route prefix entry.

Impact on the System

When the Layer 3 resource usage exceeds the upper threshold, services are not affected. If the usage of all Layer 3 resources reaches 100%, new Layer 3 services are unavailable.

Possible Causes

The Layer 3 resource usage exceeded the upper threshold, or the usage reached 100%.


  1. Lower the Layer 3 resource usage.

    • Delete unnecessary host routes, and ND and ARP entries to release host route prefix resources.
    • Delete unnecessary network segment routes to release IPv4 route prefix resources.
    • Delete unnecessary equal-cost routes to release next hop resources.
    • Delete unnecessary Layer 3 interfaces to release Layer 3 interface resources.
    • Delete unnecessary routes including host routes and network segment routes, and ND and ARP entries to release next hop resources.
    • Delete tunnels to release tunnel encapsulation and decapsulation resources.
    • Delete unnecessary network segment routes to release IPv6 route prefix entries.

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

Related Information


Updated: 2019-08-21

Document ID: EDOC1000142054

Views: 181266

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