Here an example during studying Chapter 11 VLANs and Inter-VLAN Routing. The lab is made with Cisco Packet Tracer and contains: 1 Cisco 2811 router 3 Cisco 3560 switches 4 laptops 2 VLANs After setting up this config, all laptops can ping each other, in both VLANs. Below some parts of the configs of the […]

Below a configuration of a Cisco 3560 configured as a layer 3 switch. After setting this up, the 4 laptops can ping each other. Below the partial config: [config…] ! ip routing ! [config…] ! vlan 5 name vlan-5 ! vlan 10 name vlan-10 ! vlan 20 name vlan-20 ! vlan 30 name vlan-30 ! […]

Below a configuration with the following devices: Firewall Cisco 2811 router Cisco 2960 switch 3 laptops After setting up this configuration, all laptops can ping each other. Partial config 2811b: ! interface FastEthernet0/0 description Connection to firewall ip address 172.16.0.3 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 ip address 192.168.10.1 255.255.255.240 duplex auto speed […]

After adding some VLANs on a Cisco 2811, see https://www.everythingconnected.net/add-vlan-on-cisco-2811/, let’s take a look at the routing table.Perform showing the routing table with: 2811a#show ip route The output will be: Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP D – EIGRP, EX – EIGRP external, O – […]

To add a VLAN on an interface and give it an IP address: 2811a#configure terminal 2811a(config)#interface fastEthernet 0/1.201 2811a(config-subif)#encapsulation dot1Q 201 2811a(config-subif)#ip address 192.168.11.1 255.255.255.0 2811a(config-subif)#end 2811a# After performing above commands, the running-config concerning the interfaces will look like this: ….. interface FastEthernet0/0 description Uplink to Firewall ip address 172.16.0.2 255.255.255.0 duplex auto speed auto […]

To add a vlan and give it a name: 2811a>enable 2811a#vlan database 2811a(vlan)#vlan 201 2811a(vlan)#vlan 201 name 201-vlan 2811a(vlan)#exit After that, you can show what you’ve added: 2811a#vlan database 2811a(vlan)#show The output might be something like this: VLAN ISL Id: 1 Name: default Media Type: Ethernet VLAN 802.10 Id: 100001 State: Operational MTU: 1500 Translational […]

Set an IP address on interface FastEhternet 0/0: 2811a>enable 2811a#configure terminal 2811a(config)#interface FastEthernet 0/0 2811a(config-if)#ip address 172.16.0.2 255.255.255.0 2811a(config-if)#description Uplink to Firewall 2811a(config-if)#end 2811a# *Jan 8 15:06:37.187: %SYS-5-CONFIG_I: Configured from console by Console2811a# After the command end, the console displays a SYS-5-CONFIG_I message.

After a factory reset of the switch, the hostname is: Switch First basic setup command’s for a 2960 (when connected with a console cable): Switch>enable Switch#configure terminal Switch(config)#hostname 2960a 2960a(config)#end 2960a#configure terminal 2960a(config)#line console 0 2960a(config-line)#logging synchronous 2960a(config-line)#end 2960a#copy running-config startup-config Destination filename [startup-config] After the last command, confirm the Destination filename with <Enter>.