Computer hardware and software
Which Cisco device I could use to limit the Internet Bandwidth at each port? Do I need a layer 3 Cisco Switch?
Question : Which Cisco device I could use to limit the Internet Bandwidth at each port? Do I need a layer 3 Cisco Switch?
I have a 256 kbps Internet connection and several users. I want to put an upper limit of bandwidth usage by the users. I want to implement this strategy in my company. Can you tell me the name of the Cisco Switch which can efficiently do this and also allow VLANs and VTP (both dot1q and isl)?
cisco switch
Best answer:
Answer by GTB
You will need their managed switches to do this. Most any of their managed switches will do the job of allocation, VLAN, etc work you are seeking.
In fact a managed switch by Adtran, Nortel, HP, 3 Com and others will also work.
First of all, you need to be more specific. Your connection speed is also strange low. Do you want to limit per port basis? or maybe per user (IP) basis?
1- Let’s say that you want to do per port (and you do not have any hubs connected to your cisco switch). In this case each port = 1 user.
In this case you can do it with Switch or with router.
Let’s say you just want to use switch, you would need for example cisco 2960 or cisco 3500, or any with IOS 12.2(25) or higher.
Then you would type:
Switch(config)# interface FastEthernet 0/1
# This would change speed on that port to 1Mb = 1024kb
Switch(config-if)# speed 1
# This would limit user connected to that port to: 90% of 1024kb
= > 1024 – 921.6kb = 102.4kb
Switch(config-if)# srr-queue bandwidth limit 90
Here is more extensive source: http://blogs.techrepublic.com.com/networking/?p=404
2 – in case you want to just take a look at linux implementation check this:
http://linuxdocs.org/HOWTOs/Adv-Routing-HOWTO-8.html
3 – if you want to doit on router, you will use QoS, more info:
http://www.cisco.com/en/US/products/ps6558/products_ios_technology_home.html