Alcatel AST570 User Manual page 190

14 Networking Services - IP
Simplified example of
a traditional IP routing
table
The AST570 IP routing
table
Example of the AST570
extended IP routing
table
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The following table is an example of an IP routing table:
Route Destination
30.0.0.2
10.0.0.0
0.0.0.0
Depending on the configuration made, the AST570 may use an
extended routing table.
In addition to the data contained in an ordinary routing table, it
contains information about the source IP address and the source
subnet mask.
The lookup principle may also be extended: not only the
combination of destination IP address and subnet mask is looked
up, but also the combination of source IP address and subnet
mask.
The extended IP routing table gives extra functionality to the
AST570 and is explained in subsection 14.5.2.
The following table is an example of the AST570 extended IP
routing table:
Dest. IP Dest. Subnet
Address Mask
30.0.0.2 255.255.255.255 10.0.0.2
10.0.0.0 255.255.255.0
0.0.0.0 0.0.0.0
Subnet Mask
255.255.255.255
255.255.255.0
0.0.0.0
Source IP Source Subnet
Address Mask
255.255.255.255 30.0.0.10
10.0.0.0 255.255.255.0
10.0.0.0 255.255.255.0
Gateway
30.0.0.10
10.0.0.138
20.0.0.10
Gateway
10.0.0.138
20.0.0.10
3EC 17766 AAAA TCZZA Ed. 04