Technical data

2-20 Fabric OS MIB Reference Manual
Publication Number: 53-0000521-08
IP Group
2
ipRouteMask
OID 1.3.6.1.2.1.4.21.1.11
Description The mask to be logical-ANDed with the destination address before being compared to
the value in the ipRouteDest field. For those systems that do not support arbitrary
subnet masks, an agent constructs the value of the ipRouteMask by determining
whether the value of the correspondent ipRouteDest field belong to a class-A, B, or C
network, and then using one of the following:
mask network
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 (default route), then the mask value is also
0.0.0.0.
Note All IP routing subsystems implicitly use this mechanism.
ipRouteMetric5
OID 1.3.6.1.2.1.4.21.1.12
Description An alternate routing metric for this route.
Note The semantics of this metric are determined by the routing protocol specified in the
route's ipRouteProto value. If this metric is not used, its value should be set to -1.
ipRouteInfo
OID 1.3.6.1.2.1.4.21.1.13
Description A reference to MIB definitions specific to the particular routing protocol that is
responsible for this route, as determined by the value specified in the route's
ipRouteProto value. If this information is not present, its value should be set to the
Object Identifier { 0 0 }, which is a syntactically valid object identifier; any
conferment implementation of ASN.1 and BER must be able to generate and
recognize this value.
IP Address Translation Table
The IP address translation table contains the IpAddress to physical address equivalences. Some
interfaces do not use translation tables for determining address equivalences.
Example:
DDN-X.25 has an algorithmic method; if all interfaces are of this type, then the Address
Translation table is empty.