All MIBs › FOUNDRY-SN-CAM-MIB › snCamUsageL2Free
snCamUsageL2Free
Module: FOUNDRY-SN-CAM-MIB
OID (symbolic): FOUNDRY-SN-CAM-MIB::snCamUsageL2Free
OID (numeric): 1.3.6.1.4.1.1991.1.14.1.1.2.2.1.5
Node type: OBJECT-TYPE
Type: Gauge32
Access: read-only
Description: The amount of CAM currently available for this layer 2 traffic entry. Each unit is 8 bytes.
What is snCamUsageL2Free?
This value reports how many CAM entries remain available for layer 2 forwarding on a given linecard's network processor. Administrators watch this to detect when a switch is nearing its MAC address table capacity, which can cause new MAC learning to fail or flooding to increase. A snCamUsageL2Free value dropping toward zero on a heavily populated access switch would indicate the layer 2 forwarding table is nearly full.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1991.1.14.1.1.2.2.1.5 snmpwalk -v2c -c public <target> FOUNDRY-SN-CAM-MIB::snCamUsageL2Free
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.1991.1.14.1.1.2.2.1.5.1 snmpget -v2c -c public <target> FOUNDRY-SN-CAM-MIB::snCamUsageL2Free.1
Start monitoring Brocade/Foundry FastIron/BigIron switch/router (CAM forwarding-table usage) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the FOUNDRY-SN-CAM-MIB::snCamUsageL2Free OID value, configure state conditions and alerts, and monitor any Brocade/Foundry FastIron/BigIron switch/router (CAM forwarding-table usage) from a single console.
OID Breakdown
Upper-level ancestors (9 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.1991 | foundry | FOUNDRY-SN-ROOT-MIB |
| 1.3.6.1.4.1.1991.1 | products | FOUNDRY-SN-ROOT-MIB |
| 1.3.6.1.4.1.1991.1.14 | platform | FOUNDRY-SN-ROOT-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.1991.1.14.1 | snCamMIB | FOUNDRY-SN-CAM-MIB |
| 1.3.6.1.4.1.1991.1.14.1.1 | snCamObjects | FOUNDRY-SN-CAM-MIB |
| 1.3.6.1.4.1.1991.1.14.1.1.2 | snCamUsage | FOUNDRY-SN-CAM-MIB |
| 1.3.6.1.4.1.1991.1.14.1.1.2.2 | snCamUsageL2Table | FOUNDRY-SN-CAM-MIB |
| 1.3.6.1.4.1.1991.1.14.1.1.2.2.1 | snCamUsageL2Entry | FOUNDRY-SN-CAM-MIB |
| 1.3.6.1.4.1.1991.1.14.1.1.2.2.1.5 | snCamUsageL2Free | FOUNDRY-SN-CAM-MIB |