All MIBs › JUNIPER-L2ALD-MIB › jnxL2aldHistMacChangedMsg
jnxL2aldHistMacChangedMsg
Module: JUNIPER-L2ALD-MIB
OID (symbolic): JUNIPER-L2ALD-MIB::jnxL2aldHistMacChangedMsg
OID (numeric): 1.3.6.1.4.1.2636.3.48.1.2.1.8.1.2
Node type: OBJECT-TYPE
Type: OCTET STRING
Access: read-only
Description: This object contains the information of a MAC change
notification event. It consists of several tuples packed
together in the format of '
What is jnxL2aldHistMacChangedMsg?
A packed binary record (1-512 octets) of one or more 13-octet tuples, each describing a MAC change event: a 1-octet operation code (1=learnt, 2=removed, 3=updated, 0=end-of-object), a 2-octet VLAN index, the 6-octet MAC address, a 2-octet dot1dBasePort, and a 2-octet VLAN tag. Decoding this per the documented tuple layout is how you extract the actual MAC/port/VLAN details of a historical change event.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2636.3.48.1.2.1.8.1.2 snmpwalk -v2c -c public <target> JUNIPER-L2ALD-MIB::jnxL2aldHistMacChangedMsg
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2636.3.48.1.2.1.8.1.2.1 snmpget -v2c -c public <target> JUNIPER-L2ALD-MIB::jnxL2aldHistMacChangedMsg.1
Start monitoring Juniper EX-series Ethernet switch (L2ALD MAC learning daemon) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the JUNIPER-L2ALD-MIB::jnxL2aldHistMacChangedMsg OID value, configure state conditions and alerts, and monitor any Juniper EX-series Ethernet switch (L2ALD MAC learning daemon) 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 |
| 1.3.6.1.4.1.2636 | juniperMIB | JUNIPER-SMI |
| 1.3.6.1.4.1.2636.3 | jnxMibs | JUNIPER-SMI |
| 1.3.6.1.4.1.2636.3.48 | jnxl2aldMibRoot | JUNIPER-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2636.3.48.1 | jnxl2aldMib | JUNIPER-L2ALD-MIB |
| 1.3.6.1.4.1.2636.3.48.1.2 | jnxL2aldMacNotificationMIBObjects | JUNIPER-L2ALD-MIB |
| 1.3.6.1.4.1.2636.3.48.1.2.1 | jnxL2aldMacNotificationMIBGlobalObjects | JUNIPER-L2ALD-MIB |
| 1.3.6.1.4.1.2636.3.48.1.2.1.8 | jnxL2aldMacHistoryTable | JUNIPER-L2ALD-MIB |
| 1.3.6.1.4.1.2636.3.48.1.2.1.8.1 | jnxL2aldMacHistoryEntry | JUNIPER-L2ALD-MIB |
| 1.3.6.1.4.1.2636.3.48.1.2.1.8.1.2 | jnxL2aldHistMacChangedMsg | JUNIPER-L2ALD-MIB |