All MIBs › CROUTE-MIB › drIpInterfaceForwardIpBroadcast
drIpInterfaceForwardIpBroadcast
Module: CROUTE-MIB
OID (symbolic): CROUTE-MIB::drIpInterfaceForwardIpBroadcast
OID (numeric): 1.3.6.1.4.1.81.31.6.1.1.6
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: Whether the router forwards IP directed broadcasts that are to be transmitted as link-layer broadcast to an attached net or subnet.
What is drIpInterfaceForwardIpBroadcast?
This setting controls whether the router forwards IP directed broadcast datagrams onward as a link-layer broadcast to the attached subnet. Administrators toggle this because directed broadcast forwarding is a known vector for amplification-style attacks and unwanted broadcast traffic, so many secure configurations disable it. For example, an admin hardening a public-facing interface would set drIpInterfaceForwardIpBroadcast to disable so the router stops relaying directed broadcasts onto that LAN segment.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.81.31.6.1.1.6 snmpwalk -v2c -c public <target> CROUTE-MIB::drIpInterfaceForwardIpBroadcast
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.81.31.6.1.1.6.1 snmpget -v2c -c public <target> CROUTE-MIB::drIpInterfaceForwardIpBroadcast.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.81.31.6.1.1.6.1 i <value>
Start monitoring Layer 3 switch platform (vendor unclear, BOOTP/RIP) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CROUTE-MIB::drIpInterfaceForwardIpBroadcast OID value, configure state conditions and alerts, and monitor any Layer 3 switch platform (vendor unclear, BOOTP/RIP) from a single console.
OID Breakdown
Upper-level ancestors (7 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 |
| 1.3.6.1.4.1.81 | lannet | GEN-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.81.31 | croute | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.6 | drIpRoute | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.6.1 | drIpInterfaceTable | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.6.1.1 | drIpInterfaceEntry | CROUTE-MIB |
| 1.3.6.1.4.1.81.31.6.1.1.6 | drIpInterfaceForwardIpBroadcast | CROUTE-MIB |