ipRouteMask

Indicate the mask to be logical-ANDed with the 
destination address before being compared to the value in the
ipRouteDest field. The BRICK is able to use arbitrary 
subnet-masks. If the subnet mask is not specified, it will be
set automatically according to the following table:
              
               0.0.0.0                 default route
              
               255.0.0.0               class-A
              
               255.255.0.0             class-B
              
               255.255.255.0           class-C
              
If the value of the ipRouteDest is 0.0.0.0 (a default
route) then the mask value is also 0.0.0.0. It should be 
noted that all IP routing subsystems implicitly use this
mechanism. Host routes are created by setting the subnet
mask to 255.255.255.255.

MIB

RFC1213-IPROUTE-MIB

OID

.0.4.21.1.11

Type

column

Access

readwrite

Status

mandatory

Parent

ipRouteEntry