limit bandwidth between two routers with QoS

[gavin han]

HI,

I've a layer -3 link between two switches and I've limit b/w to 5 M (or any required b/w) for traffic coming to this link from one perticular host (host1).

(Sw1)<---layer-3 link------>(Sw2)<-----------------------------------host1

how do I do it? can I have an example pls

Thanks.

[andrew.prince]

Search for "Cisco QoS SRND" on your search engine of choice.

Sent from Cisco Technical Support iPad App

[gavin han]

can you be more specific pls. that didn't help

[kevinm2264]

Hi,

How about putting them at 10mb instead of 100. I assumed they are running 100.

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[gavin han]

Hi, I will have to put them on 5 M or 2 M link

[lgijssel]

You must use policing based on source/dest on sw2.

Brief example:

class-map match-any host1-to-dest

  match access-list 101

!

!

policy-map Outbound

  class host1-to-dest

   police 2000000 exceed-action drop

  class class-default

or change the numbers for 5Mb:

   police 5000000 exceed-action drop

access-list 101 permit ip host host1 subnet_on_sw1 0.0.0.255 (assuming a /24 on sw1)

Do not forget to apply the policy map on the outbound interface. (service-policy out Outbound)

Verify with " sh policy-map int ...

regards,

Leo

[gavin han]

Thanks for your reply...

quick question: "exceed-action drop" does it drops the packet or it's just that it doesn't let the b/w go beyond 2M or 5M but we don't loose any data?

Thanks...

[gerald.suiza]

that statement drops the packet since the action is "drop"

[gavin han]

Thanks. I don't wanna drop packets. I just want to limit the b/w. could you advise if there is any other way to limit it?

[Joseph W. Doherty]

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Posting

gavin han wrote:

Thanks. I don't wanna drop packets. I just want to limit the b/w. could you advise if there is any other way to limit it?

Shape rather than police.

[Marius Gunnerud]

you could configure it something like this:

enable

conf t

access-list 101 permit ip host 192.168.1.10 any

class-map match-all HOST

match access-group 101

policy-map LIMIT

class HOST

shape average 5000000

class class-default

fair-que

int fa0/1

service-policy out HOST

[Marius Gunnerud]

oops that was meant to be

int fa0/1

service-policy out LIMIT