IP communications infrastructure notes 8

Router: its core role is to achieve network interconnection, data forwarding.

1, the route (addressing): build a routing table, refreshing;

2, the exchange: forwarding the packet data between network;

3, broadcast isolation, develop access rules;

4, heterogeneous network interconnection;

5, the rate matching subnets.

Routing table stored in the RAM of the router.

Communication with the subnet: ARP Address Resolution;

Communication between the different segments: router forwards

Routing table configuration:

1, the destination network address;

2, mask;

3, the next hop address;

4, a physical transmitting port;

5, routing information sources;

6, route priority;

7, metric.

Route classification:

1, the default route;

2, direct route;

3, static routing;

4, dynamic routing