Cisco

There are 4 rules to assign IP addresses to the routers.

1. All the interfaces of routers should be in a different network (subnet).
2. Both interfaces of routers facing each other should be in the same network (subnet).
3. LAN  that under the router interface should be n the same network (subnet).
4. All the LAN and WAN networks must be in a different network (subnet)

Configure interfaces of routers should be in the interface mode which under the global configuration mode.

I want to show you in this article basic routing configuration. But before this ı must explain the mod of routing. Now let starting.

There are 3 main modes of routing.  U ser mode, privileged mode, global configuration mode. there are some more modes but all of them are under the global configuration mode.

route> This mode is named user mode. Provides only some basic monitoring commands such as; show version, show flash, show IP interface brief and ping, traceroute.  modifications and configuration are not allowed in this mode.

The manual routing of the network administrator is called static routing. When the network structure changes, these routers also need to be changed manually. They are not meant to be replaced by any dynamic routing protocol.

Router>enable
Router#confgigure terminal
Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.0.1

In the example above, the 192.168.1.0/24 network is routed to the 192.168.0.1 gateway.

Predefined Routing

The addresses that the router cannot find as a result of the static and dynamic routing definitions are directed to a predefined address. In case there are roads that can be overlooked as a result of static or dynamic routing, it is recommended to enter the default routing definition to the routers. By default, to route all networks to the 192.168.0.1 gateway;

We will see how to do the Cisco Switch Integration (Syslog). For this, we will do the installation by following the steps below.

The enable command switches from user mod to privileged mod.

Switch>enable

Global configuration mode is passed with the configure terminal command.

Switch# configure terminal

The server IP (for UNIX systems) to be logged after switching to Config mode is specified with the command below.

Switch(config)# logging host  192.168.1.10

After entering the command and pressing Enter, we will see a message as below. It is stated that logging has started on the IP address specified on the 514 port.

Collision is called the error that occurs at the same time both during packet sending and receiving. This is especially the case for devices that operate half-duplex, such as Hub and Repeater, that is, cannot send and receive packets from one port at the same time. Collision Domain is the area where there is a collision. In other words, it is a region where a collision can take place. Since Hubs and Repeaters send the packets they receive to all ports, there is one Collison Domain regardless of how many hubs and devices connected to the hub. Routers and switches have as many ports as there are Collision Domains. Because there is only one packet collision probability on each port. Briefly; While there is one collision domain at the hub, the switches and routers have as many collision domains as each port. Therefore, it is better to use switches and routers instead of hubs in professional networks