[c-nsp] Rate-limit on Frame Relay T1

Daniel Holme dan.holme at gmail.com
Fri Mar 12 04:20:00 EST 2010


Personally, on a frame-relay interface, I would use frame-relay
traffic shaping to achieve bandwidth control as it's integral to the
FR config and you can apply it to the DLCI directly.

You're running PPP over the DLCI in your example, so you should
probably do any rate-limiting at that level, ie, in the
virtual-template.

Do you see your egress policy 'QoS-Out' matching any packets?


--Dan

On Fri, Mar 12, 2010 at 1:49 AM, Nick Voth <nvoth at estreet.com> wrote:
> Folks,
>
> I'm trying to enable an input rate-limit on a Covad frame relay T1 and I'm
> not getting anywhere. Once I apply the rate-limit rule to the serial0/0/0
> interface and do a " show int serial0/0/0 rate-limit", I don't see any
> conforming traffic:
>
> Router#show int serial0/0/0 rate-limit
> Serial0/0/0
>  Input
>    matches: all traffic
>      params:  1376000 bps, 8000 limit, 8000 extended limit
>      conformed 0 packets, 0 bytes; action: transmit
>      exceeded 0 packets, 0 bytes; action: drop
>      last packet: 2471205388ms ago, current burst: 0 bytes
>      last cleared 00:46:01 ago, conformed 0 bps, exceeded 0 bps
>
> The main part of the router config is below. If anyone has any idea why that
> rate-limit rule isn't seeing any traffic, I'd be very appreciative.
>
> Config:
> !
> !
> class-map match-any VoIP-Control
>  match access-group 101
> !
> !
> policy-map QoS-Out
>  class VoIP-Control
>  priority 1300
>  set ip dscp ef
>  class class-default
>  fair-queue 2048
>  set ip dscp default
> !
> !
> interface FastEthernet0/0
>  ip address x.x.x.x 255.255.255.248
>  duplex auto
>  speed auto
>  no keepalive
> !
> !
> interface Serial0/0/0
>  bandwidth 1536
>  no ip address
>  rate-limit input 1376000 8000 8000 conform-action transmit exceed-action
> drop
>  encapsulation frame-relay IETF
>  no ip mroute-cache
>  service-module t1 timeslots 1-24
>  service-module t1 fdl both
>  frame-relay lmi-type ansi
>  max-reserved-bandwidth 95
>  service-policy output QoS-Out
> !
> interface Serial0/0/0.1 point-to-point
>  frame-relay interface-dlci 16 ppp Virtual-Template1
> !
> interface Virtual-Template1
>  ip address negotiated
>  ppp chap hostname 5411955 at bz8
>  ppp chap password 7 14134B5954057E7A77
>  ppp ipcp dns request
>  ppp ipcp route default
>  ppp ipcp address accept
> !
> !
> access-list 101 permit ip any host y.y.y.y
>
> Thanks very much,
>
> -Nick Voth
>
>
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