CAR RATE-LIMIT

[giuliano]

Hi.

I'm trying to limit my output connection over a serial wan card at max 64 kbit/s.

I inserted this acl

access-list 100 perit ip any any

and on serial interface

rate-limit output access-group 100 64000 8000 8000 conform-action transmit exceeded-action drop.

When i try to download a file from a locatin connected with my serial link, i reach 200-300 kbit/s.

Why this?

How i can set my

bit rate, normal burst bytes, maximum burst bytes to limit the all the connections to 64 kbit/s?

If i connect another network over a fast ethernet card, i must change parameters in bit/s configuration?

Thanks.

Best Regards.

[bacarpenter]

I assume you tested this from the other end of the serial link where the access list is? So I ask are you using CEF (Cisco Express Forwarding) on this interface? You must.

[giuliano]

Yes, i tested the connection on the other end of the link over serial and ethernet.

In the first moment the connection was limited by 20-30 kb, but it increase until 200-300 kb/s.

I want only 6,4 kb/s for this connection!

I do not use CEF express forwarding, some documentation about CAR limit,

does non explain to enable CEF ....

Why this?

Many Thanks.

[bacarpenter]

Don't know why its not it some of the documentation. Everything I ever read says CEF is required for CAR.

[giuliano]

In effect some documentation about CAR, say that using CAR & DCAR with

only output rate-limit, you must be enable CEF on the interface.

I enabled CEF glibally with ip cef but nothing changed.

Perhaps using output + input CAR limit, with 64000 8000 8000 it work correclty.

It's strange ........