All MIBs › RFC1354-MIB › ipForwardMask
ipForwardMask
Module: RFC1354-MIB
OID (symbolic): RFC1354-MIB::ipForwardMask
OID (numeric): 1.3.6.1.2.1.4.24.2.1.2
Node type: OBJECT-TYPE
Type: IpAddress
Access: read-write
Description: Indicate the mask to be logical-ANDed with the destination address before being compared to the value in the ipForwardDest field. For those systems that do not support arbitrary subnet masks, an agent constructs the value of the ipForwardMask by reference to the IP Ad- dress Class.
Any assignment (implicit or otherwise) of an instance of this object to a value x must be rejected if the bitwise logical-AND of x with the value of the corresponding instance of the ipForwardDest object is not equal to ipForward- Dest.
What is ipForwardMask?
This is the subnet mask paired with ipForwardDest, logically ANDed against a packet's destination address to determine whether this route entry matches. Admins use the destination and mask pair together to understand the exact scope of a route, for example distinguishing a host-specific route of 255.255.255.255 from a broad network route of 255.255.0.0. For example, an entry with ipForwardDest 10.1.0.0 and this mask set to 255.255.0.0 matches any destination in the 10.1.0.0/16 range.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.4.24.2.1.2 snmpwalk -v2c -c public <target> RFC1354-MIB::ipForwardMask
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.4.24.2.1.2.1 snmpget -v2c -c public <target> RFC1354-MIB::ipForwardMask.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.2.1.4.24.2.1.2.1 a <value>
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OID Breakdown
Upper-level ancestors (10 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 |
| 1.3.6.1.2 | mgmt | AXON-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| 1.3.6.1.2.1.4 | ip | CHECKPOINT-MIB-2 |
| 1.3.6.1.2.1.4.24 | ipForward | IP-FORWARD-MIB |
| 1.3.6.1.2.1.4.24.2 | ipForwardTable | IP-FORWARD-MIB |
| 1.3.6.1.2.1.4.24.2.1 | ipForwardEntry | IP-FORWARD-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.4.24.2.1.2 | ipForwardMask | RFC1354-MIB |