One, routing
Routing : the forwarding process from the source host to the target host
Switch for forwarding through the same network segment
Routers for forwarding on different network segments
1.1 How the router works
1.2 Formation of the routing table
Routing table:
1. The collection of routing entries maintained in the router.
2. The router selects the routing table based on the
routing table. The routing table is formed:
1. Directly connected network segment
2. Configure IP address and port UP status to form a direct Connected route
b, indirectly connected network segment
1.3 Static routing
Manually configured by the administrator, it is one-way
Lack of flexibility
1.4 Default route
When the router cannot find the routing entry of the target network in the routing table, the router forwards the request to the default routing interface
The default route is a special static route
The ARP table is used to establish a connection. The
routing table is used for forwarding between routes.
Second, the command
1. Establish routing and PC connection, configure the corresponding IP and interface
< Huawei >sys
[Huawei]sys R1
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip address 192.168.0.10 24
[R1-GigabitEthernet0/0/0]undo shutdown
[R1-GigabitEthernet0/0/0]quit
[Huawei]display interface brief ####Check the network port status, open or closed
…
…
[R1] ip route-static 192.168.0.0 24 10.0.0.1
[R1] ip route-static 192.168.0.0 24 20.0.0.1 preference 70
[R1] ip routing-table
PC distribution IP
Command ping