Hello,

I need to limit the bandwidth (in / out) on some of the ports on a Cisco 3550 switch to 1.5Mbps.

I used the below configuration and getting 10.37 Mbps download and 1.03 Mbps upload instead of 1.50 Mbps upload / download.

Also, the switch is not doing anything when I use:
service-policy output restrict-to-1.5
(it ignores the "service-policy output restrict-to-1.5"; however, it accepts "service-policy input restrict-to-1.5")

Any help is really appreciated,
Bernie

mls qos
!
ip access-list extended all-traffic
permit ip any any
!
!
class-map match-all all-traffic-class
match access-group name all-traffic
!
!
policy-map restrict-to-1.5
class all-traffic-class
set dscp default
police 1500000 100000 exceed-action drop
!
!
interface FastEthernet0/1
switchport mode dynamic desirable
service-policy input restrict-to-1.5
!

when you say it ignores it, does it still accept the command? What IOS is on the 3550?

post the results of a "show policy-map interface f0/1" when the policy is applied both inbound and outbound (seperately of course!!).

Hello,

The IOS is version 12.2

When I type "service-policy output restrict-to-1.5" under the interface configuration, it accepts it without any errors, but when I do show run, under the interface, it only shows "service-policy input restrict-to-1.5"

So I did some more research and found another way which seems to be cleaner and work better but I still cannot achieve a close bandwidth limit result. Below is my new configuration which suppose to limit the bandwidth to 2Mbps on FastEthernet0/1 and 3Mbps on FastEthernet0/2, but the bandwidth is a lot lower, for example instead of 3 Mbps, I'm getting 1.7 Mbps download and 0.61 Mbps upload. When I remove the service-policy, I get the correct bandwidth of 10 Mbps upload and download.

I appreciate any help.

Here is the new configuration:

mls qos aggregate-policer 2000k 2000000 25000 exceed-action drop
mls qos aggregate-policer 3000k 3000000 25000 exceed-action drop
mls qos
!
class-map match-all traffic1
match ip dscp default cs1 cs2 cs3 cs4 cs5 cs6 cs7
!
!
policy-map traffic_2000k
class traffic1
police aggregate 2000k
!
policy-map traffic_3000k
class traffic1
police aggregate 3000k
!
!
interface FastEthernet0/1
switchport mode access
service-policy input traffic_2000k
service-policy output traffic_2000k
load-interval 30
spanning-tree portfast
!
interface FastEthernet0/2
switchport mode access
service-policy input traffic_3000k
service-policy output traffic_3000k
load-interval 30
spanning-tree portfast

How are you testing?