MPLS traffic must be restricted in router between two servers

[siddhukaturi1]

Hi all,

Very good morning,

We have two servers in two different locations(Hyderabd,chennai).

We have 20MB MPLS link at Hyderabad and 80MB link Chennai. Whenever these two servers are communicating it consuming 80% of the traffic.

We need to restrict the traffic to 5MB between two servers so I configured QOS but still it is taking 80% of the link at Hyderabad. pls check the configuration.

Configuration at Hyderabad: Same did at Chennai location also.

policy-map QoS-Policy
class Video_Conference
bandwidth 4000
class EXCHANGE
bandwidth 5000
police 5000000 5100000 conform-action transmit exceed-action drop
class NON_VC_TRAFFIC
bandwidth 8000
class RAMCO_DR
bandwidth 3000
police 3000000 4000000 conform-action transmit exceed-action drop
policy-map LAN_IN
class Video_Conference
set dscp af41
class EXCHANGE
set dscp af31
class NON_VC_TRAFFIC
set dscp af11
class RAMCO_DR
set dscp 21

ip access-list extended MAIL_SERVER
permit ip host 10.50.0.10 host 10.111.0.15
permit ip host 10.50.0.5 host 10.111.0.6
ip access-list extended NON_VCTRAFFIC
permit ip any any
ip access-list extended RAMCO
permit ip host 10.50.0.17 host 10.111.0.44
ip access-list extended VC_HYD
permit ip host 10.50.25.50 any
permit ip host 10.50.25.51 any

Some ons can please help us the situation.

We need to restrict the bandwidth between these two servers with 5MB.

Is their any other concept to restrict the traffic.

[Georg Pauwen]

Hello,

your burst rate is set to 5100000, which equals roughly 40MB. Try and change the policer to:

class EXCHANGE
bandwidth 5000
police 5000000 937500 conform-action transmit exceed-action drop

[siddhukaturi1]

I need to assign only 5MB for exchange so can i give like this, If it exceed 6mb packets shoulb drop.

class EXCHANGE
bandwidth 5000
police 500000 600000 conform-action transmit exceed-action drop

[Georg Pauwen]

Hello,

the first value is measured in bits, the second (the burst rate) in bytes. It can be a bit confusing. If you want to police to 5MB and drop everything exceeding 6MB, it would be:

police 5000000 750000 conform-action transmit exceed-action drop

750000 bytes equals 6000000 bits (6MB).

Hope that makes sense.

[siddhukaturi1]

I think MB to bps converter formala is : value*1024*1000

is it right ...correct me if  i am worng.. 

[dperezoquendo]

Where are you placing these policies at?

Am I correct in assuming that you're using policy-map LAN_IN to mark traffic coming from a server and then policy-map QoS-Policy at the WAN for policing?

I would also verify if you're seeing any hits on the policy-map as well. You can check this via command "sh policy-map int <interface>"