3750G Rate Limiting

[jschweng]

Router(config)# int vlan 650

Router (config)# rate-limit output 25000000 1000000 1000000 conform-action transmit exceed-action drop

Does anyone know if this command will work to rate limit traffic exiting a 3750G switch

ios version 12.2.50SEB3.

Also doesnt that mean that if I have several ports (4 for example) all transmitting data which are all on Vlan650, that the total 25M will be what is allowed to leave out of Vlan650 and so the aggregate rate will be split between the 4 ports.  And if only one port is transmitting at any given time then the switch will allow 25M out that port?

[Amit Aneja]

Rate limiting is not supported on 3750 platform, its more of router QOS command.

Here are some alternatives that you could use:

You can configure policer to do input rate-limiting.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12220se/3750scg/swqos.htm#wp1024977

For output rate-limiting, you can limit the egress port bandwidth with the"srr-queue bandwidth limit" command.

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_20_se/configuration/guide/swqos.html

HTH,

Amit Aneja