Bandwidth Throttling on NetVanta switchports or per VLAN?

[Anonymous]

Can any NetVanta layer 2/3 switch throttle bandwidth per switchport or per VLAN?   If so, how?

Thanks,

Dan

[Anonymous]

Dan,

Unfortunately, there is no way to throttle bandwidth on a switchport basis. However, on any NetVanta switch with routing capability (not to be confused with layer 3 switching), you have the ability to set a traffic-shape rate for outbound traffic on a per VLAN-interface basis. You can do this in the web interface by navigating to Data -> Vlans and the clicking on the vlan you want to throttle. Under the "VLAN Interface Configuration" section, 'Traffic-Shaping' can be enabled and a value can be specified. In the CLI, the commands are the following:

(config)# interface vlan x

(config-intf-vlan x)# traffic-shape rate <bandwidth in bps>

Let us know if you have any further questions.

Thanks,

Noor

[Anonymous]

Noor,

Thank you.  Do you know if we could extend this to a VLAN associtated with a AP 150 wireless solution?  We are working on a guest wireless access project where we would like to throttle bandwidth on a particular VLAN (SSID).  Would the NetVanta layer 3 switches provide a method for this?

Thanks,

Dan

[Anonymous]

Dan,

The "traffic-shape rate" command would be applied to the VLAN associated with the NetVanta 150. However, I'm not sure this would serve your needs. The "traffic-shape rate" command only throttles the throughput outbound on that VLAN. If your goal is to preserve download bandwidth on your WAN connection, this would not accomplish what you are looking to do. By the time, the AOS device throttles the traffic, the VLAN would have already used the bandwidth on the WAN. Vice-versa, the "traffic-shape rate" command would be unable to throttle inbound traffic.

In a scenario where you would like to throttle a certain VLAN's upload and download speed on your WAN connection, the best option would be Enhanced Ethernet Quality of Service (EEQoS). Unfortunately, out of all the layer 3 switches, only the NetVanta 1335 supports this feature. More information about EEQoS can be found at this link:

EEQoS in AOS - https://supportforums.adtran.com/docs/DOC-1634

Feel free to let us know if you have any further questions.

Thanks,

Noor

[Anonymous · Accepted solution]

Dan,

After considering it further, I believe that applying a traffic-shape rate on the WLAN VLAN interface may actually slow the VLAN's throughput using TCP throttling. There may be initial bursts but it will eventually scale back to accomodate the traffic-shape rate.

Let us know if you have any further questions.

Thanks,

Noor