All MIBs › NMS-HAL-GLOBAL-MIB › l2TblHashAlgo
l2TblHashAlgo
Module: NMS-HAL-GLOBAL-MIB
OID (symbolic): NMS-HAL-GLOBAL-MIB::l2TblHashAlgo
OID (numeric): 1.3.6.1.4.1.11606.10.9.1.1.1.1.17
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: The hash algorithm of MAC address table. The range is 1-5. 1 means CRC32 upper,2 means CRC32 lower, 3 means LSB,4 means CRC16 lower,5 means CRC16 upper. Default is 2.
What is l2TblHashAlgo?
This field selects which hashing algorithm the switch uses to index entries in its MAC address, or Layer 2 forwarding, table. Admins might change this from the default of CRC32 lower if they are seeing unusually high MAC table hash collisions with their specific traffic's MAC address distribution. For example, switching l2TblHashAlgo from the default crc32lower(2) to lsb(3) changes how MAC addresses are distributed across the hash table's buckets.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.11606.10.9.1.1.1.1.17 snmpwalk -v2c -c public <target> NMS-HAL-GLOBAL-MIB::l2TblHashAlgo
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.11606.10.9.1.1.1.1.17.1 snmpget -v2c -c public <target> NMS-HAL-GLOBAL-MIB::l2TblHashAlgo.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.11606.10.9.1.1.1.1.17.1 i <value>
Start monitoring nms Co., Ltd. switch (hardware-abstraction-layer global settings, vendor unidentified) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NMS-HAL-GLOBAL-MIB::l2TblHashAlgo OID value, configure state conditions and alerts, and monitor any nms Co., Ltd. switch (hardware-abstraction-layer global settings, vendor unidentified) from a single console.
OID Breakdown
Upper-level ancestors (12 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 |
| 1.3.6.1.4.1.11606 | pbn | PBN-ROOT |
| 1.3.6.1.4.1.11606.10 | nms | NMS-SMI |
| 1.3.6.1.4.1.11606.10.9 | nmsMgmt | NMS-SMI |
| 1.3.6.1.4.1.11606.10.9.1 | switchMIB | NMS-SWITCH-MIB |
| 1.3.6.1.4.1.11606.10.9.1.1 | switchMIBObjects | NMS-SWITCH-MIB |
| 1.3.6.1.4.1.11606.10.9.1.1.1 | switchSystem | NMS-SWITCH-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.11606.10.9.1.1.1.1 | switchHALGlobal | NMS-HAL-GLOBAL-MIB |
| 1.3.6.1.4.1.11606.10.9.1.1.1.1.17 | l2TblHashAlgo | NMS-HAL-GLOBAL-MIB |