-74-
Application Example
There is a network topology as the following figure shown:
If the LAN port of TL-ER604W with Non-NAT or Classic system modeis connected to LAN1 with
subnet of 192.168.0.0/24, while the LAN port of another Router R1 is connected to LAN2 with network
of 192.168.2.0/24. Meanwhile, the WAN ports of the two routers are interconnected and within the
same network. Now a host under TL-ER604W and within network of LAN1 desires to communicate
with the host within network of LAN2.
You can set a Static Route entry: Enter the WAN IP address of R1 (116.31.88.16) in the Next Hop field
on the Static Route page of TL-ER604W as the following figure shown, then click the <Add> button to
save the entry.
3.4.5.2 RIP
RIP (Routing Information Protocol) is a dynamic route protocol using distance vector algorithm to select
the optimal path. With features of easy configuration, management and implementation, it is widely used
in small and medium-sized networks such as the campus network.
The distance of RIP refers to the hop counts that a data packet passes through before reaching its
destination, the value range of which is 1–15. It means the destination cannot be reached if the value is
more than 15. Optimal path indicates the path with the fewest hop counts. RIP exchanges the route
information every 30 seconds by broadcasting UDP packets. If one Router has not sent route information
in 180 seconds, the RIP of the other routers would set the distance to this Router into infinity and delete
the corresponding information from route table.
RIP develops from initial RIPv1 to RIPv2 gradually. Compared with RIPv1, RIPv2 supports VLSM
(Variable Length Subnet Mask), simple plain text authentication, MD5 cryptograph authentication, CIDR
(Classless Inter-Domain Routing) and multicast.
