Patton electronic Model 2604 Forwarding table window, Next Hop ipRouteNextHop, Type ipRouteType

10 • IP T1/E1 DACS Administrators’ Reference Guide

O/S forwarding table window

The O/S forwarding table window lists forwarding information for all routes.

Figure 25. IP Routing Forwarding Table

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 3 on page 67.

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

68 O/S forwarding table window