ALM-3276800064 The Layer 3 Resource Usage Reaches or Exceeds the Upper Threshold

Description

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 reaches or exceeds the upper threshold. Except the IPv4 route prefix entries, all Layer 3 resources have an upper usage threshold of 85%, which cannot be changed.

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

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

Attribute

Alarm ID	Alarm Severity	Alarm Type
3276800064	Warning	Equipment alarm

Parameters

Name	Meaning
OID	Indicates the MIB object ID of the alarm.
Threshold	This object indicates the upper threshold of the layer 3 resource usage.
EntPhysicalindex	This object indicates the index of a physical entity.
EntPhysicalName	This object indicates the name of a physical entity.
Slot	This object indicates the slot ID.
ResourceType	This object 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. ipv6DefipTable(767) indicates an IPv6 prefix entry of a route with a 128-bit mask. tunnel6EncapsulationTable(742) indicates a IPv6 tunnel encapsulation and decapsulation entry. tunnelEncapsulationTable(743) indicates a IPv4 tunnel encapsulation and decapsulation entry. reTable(744) indicates a RE entry. aibTable(745) indicates a AIB entry. nstTable(746) indicates a NST entry. vrrpTable(747) indicates a VRRP entry. ipv6amTable(748) indicates a IPv6 AM 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

When the Layer 3 resource usage exceeds the upper threshold, an alarm is generated. When the usage reaches 100%, an alarm is generated again.

Procedure

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 IPv6 prefix entries.
- IPv6 prefix entries of routes with a 128-bit mask: Delete unnecessary network segment routes to release route prefix resources.
- IPv6 tunnel encapsulation and decapsulation entry: Delete IPv6 tunnels to release tunnel encapsulation and decapsulation resources.
- IPv4 tunnel encapsulation and decapsulation entry: Delete IPv4 tunnels to release tunnel encapsulation and decapsulation resources.
- RE entry: Delete unnecessary routes to release RE resources.
- AIB entry: Delete unnecessary ARP entries to release AIB resources.
- NST entry: Delete unnecessary ECMP routes to release NST resources.
- VRRP entry: Delete unnecessary VRRP configuration to release VRRP resources.
- IPv6 AM entry: Delete unnecessary IPv6 routes to release IPv6 AM resources.
Collect the alarm information, log information, and configuration information, and then contact technical support personnel.
End.