8 • IP
6511RC Matrix Switch Administrators’ Reference Guide
66
Forwarding Table
Tag (genRouteTag)
An identifier associated with the route. This can have different meanings depending on the protocol. For exam-
ple, this gives the tag that was passed with a learned RIP route.
Gateway (genRouteGateway)
Specifies the IP address to which the packets should be forwarded.
Cost (genRouteCost)
This is the cost of the route as defined by RIP standards. Cost is sometimes considered to be number of hops.
A cost of 16 is considered to be infinite. A cost can be given to user-entered routes so their preference in rela-
tion to learned routes can be calculated.
State (genRouteState)
Defines the state which a route may be in during its lifetime.
•
invalid(1)—This setting deletes the route.
•
active(2)—A valid route is in use.
•
nopath(3)—No route is available to the specified gateway. The gateway is not known to local networks.
•
agedout(4)—Invalid route (soon to be removed).
•
costly(5)—A valid route, but not in use because of its higher cost.
Forwarding Table
The Forwarding Table window (see
figure 35
) displays the IP forwarding parameters for all routes in the
6511RC’s forwarding table. To display the Forwarding Table window, on the IP Routing Information sub-
page, click the O/S forwarding table link.
Figure 35. Forwarding Table window
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 63.
Summary of Contents for 6511RC
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