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Part 2: Cisco Switch commands reference guide

October 21, 2021 ,

Today we will going to talk about the Cisco commands used on the router and the switch and how they are configured. 

Here we start with the part 2 where we will start with the some of the Cisco switch commands. We already discuss some of the commands in part one as well

Fig 1.1- Switched Network

Configuring port security
NDNA_SW(config-if)#switchport mode access
NDNA_SW(config-if)#switchport port-security
NDNA_SW(config-if)#switchport port-security maximum 1
NDNA_SW(config-if)#switchport port-security violation shutdown 
(options: shutdown, protect, restrict)
NDNA_SW(config-if)#switchport port-security mac-address a26c.8721.3290
(options: H.H.H, sticky)

Note: The sticky keyword is used to let the interface dynamically learns and configures the MAC addresses of the currently connected hosts.

Verify and troubleshoot port security
NDNA_SW# show mac-address-table
NDNA_SW# show port-security
NDNA_SW# show port-security interface ge1/0/1

Configuring VLANs
NDNA_SW(config)#vlan 50 
NDNA_SW(config-vlan)#name network
NDNA_SW(config)#interface fastEthernet 0/1 
NDNA_SW(config-if)#switchport mode access
NDNA_SW(config-if)#switchport access vlan 50
NDNA_SW(config)#interface fastEthernet 0/1 
NDNA_SW(config-if)#switchport access vlan 50
NDNA_SW(config-if)#switchport voice vlan 30

Configuring Trunks
NDNA_SW(config)#interface fastEthernet 0/2
NDNA_SW(config-if)#switchport mode trunk
NDNA_SW(config-if)#switchport trunk allowed vlan add 50

Configuring VTP
NDNA_SW(config)#vtp mode server 
NDNA_SW(config)#vtp domain 
NDNA_SW(config)#vtp password cisco 
NDNA_SW(config)#vtp pruning 
NDNA_SW(config)#vtp version 2

Verify and troubleshoot VLANS and VTP
NDNA_SW# show interfaces if switchport
NDNA_SW# show interfaces trunk
NDNA_SW# show vlan {brief| id| name| summary}
NDNA_SW# show vtp status
NDNA_SW# show vtp password