threshold-monitor host

Configures monitoring of the utilization of the Host Table. The current values of number of host entries (in %) (both IPv4 ARP entries and IPv6 Neighbor entries) are compared with the configured profile limits and against the available hardware space. An alarm is raised when the number of entries falls below the configured low threshold or exceeds the configured high threshold.

Syntax

threshold-monitor host { [ high-limit value-in-percentage | low-limit value-in-percentage | [ actions [ all | none | raslog | snmp ] ] ] }

no threshold-monitor host { high-limit | low-limit | actions }

Parameters

high-limit value-in-percentage

Specifies the high usage limit as a percentage (%) of available Host table resources that will trigger the configured action. The range is 10%-100%. The default value is 90%.

low-limit value-in-percentage

Specifies the low usage limit as a percentage (%) of available Host table resources that will trigger the configured action. The range is 10%-99%. The default value is 70%.

actions

Specifies the action to be taken when a threshold is exceeded. The values supported are all, none, raslog, and snmp. The default action is all.

all: RASLOG and SNMP trap will be sent when the threshold is exceeded. This is the default configuration.
none: No action will be taken when the threshold is exceeded.
raslog: Only RASLOG will be sent when the threshold is exceeded.
snmp: Only SNMP traps will be sent when the threshold is exceeded.

Modes

Global Configuration Mode

Usage Guidelines

The no form of this command will reset the values to default.

The low-limit threshold value cannot be equal to or higher than the value configured for the high-limit threshold value.

For hardware tables that share space, it is possible to run out of free space even when the IPv4 or IPv6 routes have not individually reached their configured maximum. Once the shared hardware space runs out, addition of new hosts will be affected.

Supported In

Examples

The following example configures the lower and higher threshold monitoring values for the Host table.

SLX# configure terminal
SLX (config)# threshold-monitor host high-limit 95 low-limit 50 action all
SLX (config)#

The following example resets the configured Host table threshold monitoring values to their defaults

 SLX# configure terminal
SLX (config)# no threshold-monitor host high-limit
SLX (config)# no threshold-monitor host low-limit
SLX (config)# no threshold-monitor host action