Port security on a layer 2 switch is an important configuration for protecting the Access layer. Todd Lammle shows you in this video how easy it is to configure port security on a Cisco layer 2 switch. He goes over the violation modes or restrict, protect and shutdown, as well as how to enable port-security on a port, set the maximum amount of allowed MAC addresses, as well as how to verify your configuration on your switch.
- [Instructor] Now that we have the fundamentals…of port security down, let's take a look…by running out to switch one of our network and logging in.…And there are some show commands with port security…we're gonna look at, but I'm gonna run right out…and start configuring the ports,…'cause this is done now, as you know, on an interface level.…So I'm gonna choose my interfaces.…I can do this on one port, but typically…we'll use a range, and so the command is range.…
So I can configure multiple ports at once by saying…interface range f0, the starting port,…in this case, one, and well do through 12.…And now I'm configuring 12 ports…at once, which is kinda nice.…Now, so the command to enable port security is this:…switchport port-security and enter.…If I turn this on, I'm turning on the defaults.…But it gives me and error because my ports…on a Cisco switch, a layer two…access switch, are dynamic desirable.…
They desire to trunk, so if they see another…Cisco switch using something called dynamic trunk protocol,…across the connection to another switch,…
For more information on the CCENT exam, visit Cisco's website.
- Overview of internetworking
- The TCP/IP networking model
- Easy subnetting
- Managing Cisco IOS
- Managing Cisco networks and devices
- IP routing
- Layer 2 switching
- VLANs and InterVLAN routing
- Network address translation
Skill Level Intermediate
Internetworking devices4m 20s
3. Introduction to TCP/IP
4. Easy Subnetting
5. VLSM, Summarization, and Troubleshooting TCP/IP
6. Cisco Internetworking Operating System (IOS)
7. Managing a Cisco Internetwork
8. IP Routing
9. Layer 2 Switching
10. VLANs and InterVLAN Routing (IVR)
12. Network Address Translation (NAT)
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