Hello,
basically, you need to enable IP routing on the CBS 350, and then configure Vlans and Vlan interfaces. Static routing can be configured from the command line as well (ip route 192.168.1.0 255.255.255.0 192.168.1.1/ip route 192.168.2.0 255.255.255.0 192.168.2.1).
You can use the guide below. IP addressing arbitrary, just make sure you use the same IP address on the CBS 350 and your two other routers.
To configure the Cisco CBS 350 switch for Layer 3 functionality, you need to enable IP routing and configure VLAN interfaces to perform inter-VLAN routing. Here's a step-by-step guide:
1. **Access the CLI:**
Connect to the switch's CLI using a terminal emulation program such as PuTTY, SecureCRT, or directly through a console cable.
2. **Enter Privileged EXEC Mode:**
Enter privileged EXEC mode by typing:
```
enable
```
Then, enter the privileged EXEC mode password if prompted.
3. **Enter Global Configuration Mode:**
Enter global configuration mode by typing:
```
configure terminal
```
4. **Enable IP Routing:**
Enable IP routing on the switch using the `ip routing` command:
```
ip routing
```
5. **Create VLANs:**
Create VLANs using the `vlan <vlan_id>` command. For example, to create VLAN 10 and VLAN 20, you would use:
```
vlan 10
name VLAN10
exit
vlan 20
name VLAN20
```
6. **Assign Interfaces to VLANs:**
Assign switch interfaces to VLANs using the `interface <interface>` command followed by the `switchport access vlan <vlan_id>` command. For example, to assign interface GigabitEthernet1/0/1 to VLAN 10, you would use:
```
interface GigabitEthernet1/0/1
switchport mode access
switchport access vlan 10
```
7. **Configure VLAN Interfaces:**
Create VLAN interfaces for each VLAN using the `interface vlan <vlan_id>` command. Assign an IP address and subnet mask to each VLAN interface. For example, to configure VLAN interfaces for VLAN 10 and VLAN 20, you would use:
```
interface vlan 10
ip address 192.168.1.2 255.255.255.0
exit
interface vlan 20
ip address 192.168.2.2 255.255.255.0
```
8. **Configure Default Gateway:**
Optionally, configure a default gateway for the switch using the `ip default-gateway <gateway_ip>` command. This is typically the IP address of the router that connects the switch to other networks.
9. **Test Connectivity:**
Test inter-VLAN connectivity by connecting devices to different VLANs and verifying that they can communicate with each other.
10. **Save Configuration:**
Save the configuration to the switch's memory to ensure that it persists across reboots by typing:
```
write memory
``
