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IP Routing Table window 195
Models 2616RC, 3096RC & 3196RC Admin Reference Guide 12 • IP (IP, TCP, UDP, & ICMP)
Destination (ipRouteDest)
The destination IP address of this route. An entry with a value of 0.0.0.0 is considered a default route. Multiple
routes to a single destination can appear in the table, but access to such multiple entries is dependent on the
table-access mechanisms defined by the network management protocol in use.
Mask (ipRouteMask)
Indicates 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 belongs to a
Class A, B, or C network, and then using the appropriate mask from Table 4 on page 191.
Next Hop (ipRouteNextHop)
The IP address of the next hop of this route. (In the case of a route bound to an interface which is realized via
a broadcast media, the value of this field is the agent's IP address on that interface.)
Interface (ipRouteIfIndex)
The index value that identifies the local interface through which the next hop of this route should be reached.
The interface identified by a particular value of this index is the same interface as identified by the same value
of ifIndex.
Type (ipRouteType)
One of the following route types:
• other(1)—none of the following
• invalid(2)—an invalidated route
• direct(3)—route to directly connected (sub-)network
• indirect(4)—route to a non-local host/network/sub-network
Note
The values direct(3) and indirect(4) refer to the notion of direct and
indirect routing in the IP architecture. Setting this object to the value
invalid(2) has the effect of invalidating the corresponding entry in the
ipRouteTable object. That is, it effectively disassociates the destination
identified with said entry from the route identified with said entry. It is
an implementation-specific matter as to whether the agent removes an
invalidated entry from the table. Accordingly, management stations
must be prepared to receive tabular information from agents that corre-
sponds to entries not currently in use. Proper interpretation of such
entries requires examination of the relevant ipRouteType object.
Protocol (ipRouteProto)
The routing mechanism via which this route was learned. Inclusion of values for gateway routing protocols is
not intended to imply that hosts must support those protocols.
• unknown(0)
• local(1)—Added by the DACS to support an interface.