All MIBs › CHASSIS-MIB › chasBaseMacAddress
chasBaseMacAddress
Module: CHASSIS-MIB
OID (symbolic): CHASSIS-MIB::chasBaseMacAddress
OID (numeric): 1.3.6.1.4.1.800.2.1.1.7
Node type: OBJECT-TYPE
Type: MacAddress
Access: read-only
Description: This object is the 'base' MAC address for this chassis.
What is chasBaseMacAddress?
This object reports the single base MAC address assigned to the overall chassis, distinct from the per-module MAC addresses reported elsewhere in this MIB. Network admins use this to positively identify a specific physical chassis in Layer 2 topology tools or DHCP/ARP records, since the base MAC anchors the whole unit's identity independent of which module or port is involved. A chassis's base MAC of 00:20:DA:12:34:56 would appear as the source identity in switch discovery tools even as individual line cards report their own distinct MACs.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.800.2.1.1.7 snmpwalk -v2c -c public <target> CHASSIS-MIB::chasBaseMacAddress
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.800.2.1.1.7.1 snmpget -v2c -c public <target> CHASSIS-MIB::chasBaseMacAddress.1
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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 |
| 1.3.6.1.4.1.800 | xylan | XYLAN-BASE-MIB |
| 1.3.6.1.4.1.800.2 | xylanArch | XYLAN-BASE-MIB |
| 1.3.6.1.4.1.800.2.1 | xylanChassis | XYLAN-BASE-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.800.2.1.1 | chasInfo | CHASSIS-MIB |
| 1.3.6.1.4.1.800.2.1.1.7 | chasBaseMacAddress | CHASSIS-MIB |