All MIBs › NETI-ETH-MIB › ethFwdMACMode
ethFwdMACMode
Module: NETI-ETH-MIB
OID (symbolic): NETI-ETH-MIB::ethFwdMACMode
OID (numeric): 1.3.6.1.4.1.2928.2.2.1.2.2.1.7
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: Specifies how the forwarding function shall handle unicast frames when it does not know what interface to use for reaching a destination.
auto(1). Equivalent to `mac(2)' if the forwarding function is connected to at least three interfaces, otherwise equivalent to `nomac(3)'. If the device does not support `mac(2)', then `auto(1)' is always equivalent to `nomac(3)'.
mac(2). The forwarding function will learn what interfaces to use for a destination. This is done by looking at the source MAC address on received frames. When the forwarding function has learned what interface to use, it will forward the frame on that interface only. Learning is also specified for each interface and traffic class with ethIfQueueLearning.
nomac(3). The forwarding function will forward the frame on all its interfaces.
What is ethFwdMACMode?
Selects how the forwarding function handles unicast frames toward unknown destinations: auto(1) (learn if 3+ interfaces are attached, otherwise flood), mac(2) (always learn source MACs and forward only out the learned port), or nomac(3) (always flood to all interfaces) -- an admin forces nomac(3) on a simple two-port pass-through link where learning would add no value.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2928.2.2.1.2.2.1.7 snmpwalk -v2c -c public <target> NETI-ETH-MIB::ethFwdMACMode
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2928.2.2.1.2.2.1.7.1 snmpget -v2c -c public <target> NETI-ETH-MIB::ethFwdMACMode.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.2928.2.2.1.2.2.1.7.1 i <value>
Start monitoring Net Insight Nimbra media transport node (Ethernet transport services) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the NETI-ETH-MIB::ethFwdMACMode OID value, configure state conditions and alerts, and monitor any Net Insight Nimbra media transport node (Ethernet transport services) from a single console.
OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.2928 | netinsight | NETI-COMMON-MIB |
| 1.3.6.1.4.1.2928.2 | netiGeneric | NETI-COMMON-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2928.2.2 | netiEthMIB | NETI-ETH-MIB |
| 1.3.6.1.4.1.2928.2.2.1 | ethObjects | NETI-ETH-MIB |
| 1.3.6.1.4.1.2928.2.2.1.2 | ethFwdFuncGroup | NETI-ETH-MIB |
| 1.3.6.1.4.1.2928.2.2.1.2.2 | ethFwdFuncTable | NETI-ETH-MIB |
| 1.3.6.1.4.1.2928.2.2.1.2.2.1 | ethFwdFuncEntry | NETI-ETH-MIB |
| 1.3.6.1.4.1.2928.2.2.1.2.2.1.7 | ethFwdMACMode | NETI-ETH-MIB |