network with two Switches (C9300L-48P-4G-E)

[kevinma]

How do I configure a network? Between the two switches, with 4 Vlans 

[balaji.bandi]

Are they working standalone mode -

Establish connection between 2 Switches using Trunk (if online) - More Connection use port-channel.

1. Make sure VTP disable or transparent if not requirement of VTP

2. One of the Switch to be root for all the VLAN in the spanning tree, so set one of the as high priority

3. Create VLAN on both the switches which required in both the switches

4. Create Layer 3 SVI on one of the switch  (if you looking one of the switch act as Routing part.

5. create a port-channel or trunk between switches as mentioned below guide  

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/software/release/16-8/configuration_guide/lyr2_lyr3/b_168_lyr2_9300_cg/b_168_lyr2_lyr3_9300_cg_chapter_011.html

make sure no shutdown - if the ports are admin down.

6., connect the Physical cable and check show span, show interface status, show EtherChannel summary.

[M02@rt37]

Hello @kevinma 

Configure vlan on Switches.

Configure ports where endpoints are connected as Access port (switchport mode access) and assign the correct vlan id (swirchport access vlan id).

Connect the two Switches with dedicates ports. Each ports configured in Trunk mode (switchport mode trunk). This link allow the transport of you vlan between switches. You could restrict the vlan id authorized on that link but first do that command that allowed all vlan 1-4096).

Ports need to be active to forward traffic, note that the command no shutdown active your port. Do that on each dedicated port you need.

You could also see if ports are weel configured after your configuration:

#show interface status (see if interfaces are connected, trunk mode or access mode and assigned to the correct vlan)

#show interface trunk (see if the port plug on the other switch is Trunk mode)

#show vlan (see your vlan id configured)