I am very new to Cisco networking (haven't done any course either). I have been trying to learn a bit of networking myself and had no trouble in doing some of the basic stuff which i needed for my personal work. But i am planning to buy a new Cisco switch(a gigabit switch) and configure it to 2 different networks (1 being an internet and other being a private network for a specific job). I want to configure the ports in such a way that the first few slots for normal internet and the rest for my other network. For example if its a Cisco 2950 48 port switch, the first 1-16 port for my local internet network and the ports from 17-32 for my other network. Can somebody give me a run down on how to achieve this? Sorry for such a long but basic question, i am just trying to save few $$ and learning something new. Any help would be appreciated. Cheers
This is pretty straight forward to do, especially starting with a default configuration.
If you wish to create two networks, you will need to use VLAN's. These will allow you to segment your network into logical sections.
Once you have created those two VLAN's, you need configure the ports that will reside on those VLAN's. Your VLAN that will connect to the Internet will connect to a port that connects to your ISP router.
To create a VLAN
To name the VLAN
Switch(config-vlan)#name "Private Network"
Note: VLAN 1 always exists by default and can't be removed. So now you have VLAN 1 and VLAN 2 created
To assign the ports to the VLAN you can do something like this and also use the range command to apply this to multiple ports. This selects ports 1-16.
Switch(config)#interface range FastEthernet 0/1-16
Then configure those ports to use a specific VLAN in access mode
Switch(config-if-range)#switchport access vlan 1
There is alot more to do but this hopefully gives you a high level run down.
Hope this helps you on your quest.
Packet tracer and GNS3 for simulation is a great idea to start....9tut along with the Cisco forums can also be a good source of helpful info if you are having issues grasping a concept.
If you can afford to do it I highly recommend building a home lab setup using a pre-fab home lab which you can purchase off of Ebay or the like. Usually you get a few 2821 routers and a couple of 3560 switches to go along with them, including all of the necessary add on cards. This will give you ability to run IOS 15 and get some hands on practice. The going rate is usually about 299 but sometimes you can find one on CL.com etc for less if someone is selling theirs on the cheap.
The two biggest things, read the cert guides. Those things have some valuable info if you are just starting out. Secondly, practice...practice and more practice. In my opinion hands on practice is one of the best ways to become proficient with the material along with using the concepts in a functioning environment. CCNA was a tough go, but with effort most people of average intelligence can learn and master the material. The Cisco cert courses have been some of the most valuable sources of info around, I definitely feel like without them I would have never made the jump to admin level and ultimately engineer level positions.
A best way create two VLANS in switch initially .
**Assuming two Vlans are Vlan10 & Vlan20 **
Switch1(config)# name internet
Switch1(config)#Vlan 20 Switch1(config)#name LAN`
Now assign Vlan 10 for range of switch ports from 1-16
Switch(config)#int gigabit range 1/1-16
Switch(config)#switchport mode access
Switch(config)#Switchport access Vlan 10
Similarly assign Vlan 20 for remaining ports
Switch(config)#int gigabit range 1/17-32
Switch(config)#switchport mode access
Switch(config)#switch access vlan 20
Switch (config)# no shutdown