FRTS Be rate

From: Tasuka Amano Hsu (tasuka@mac.com)
Date: Wed Nov 19 2003 - 06:14:31 GMT-3


Hi,
I have problem when doing IPExpert WB 4.0

Using the minimum configuration passible in applying the map-class,
make sure it is applied to all PVCs. Use the following guidelines in
defining Bc, Be, CIR, and MinCIR within your map-class:

a.The Frame Relay service provider is guaranteeing 32Kbps of traffic.
b. The Frame Relay access being provided by the service provider has a
link capacity of 128Kbps.
c. Set the excess burst value by comparing CIR and total link capacity.
d. Set the Bc to 1/8 of the locally configured CIR.

Configure Frame-Relay traffic shaping:

a. The PVC should adapt to received BECNs and if enough BECNs are
received, the eventual traffic rate should be 16Kbps.
b. Set Bc to 8Kbps and Be to 64Kbps.
c. Considering the value of Bc, set the appropriate value of the CIR.

Ensure that all routers can ping their own Frame-Relay interfaces.

My Configuration here:

R2
!
interface Serial0
  no ip address
  encapsulation frame-relay IETF
  no fair-queue
  frame-relay class R2_ts
  frame-relay traffic-shaping
  frame-relay lmi-type ansi
!
interface Serial0.2 multipoint
  ip address 150.50.100.2 255.255.255.224
  frame-relay map ip 150.50.100.2 105
  frame-relay map ip 150.50.100.5 105 broadcast
  frame-relay map ip 150.50.100.6 106 broadcast
  no frame-relay inverse-arp
!
map-class frame-relay R2_ts
  no frame-relay adaptive-shaping
  frame-relay cir 128000
  frame-relay bc 16000
  frame-relay be 48000
  frame-relay mincir 32000
!

sh frame traffic-shaping

Interface Se0.2
        Access Target Byte Sustain Excess Interval Increment
Adapt
VC List Rate Limit bits/int bits/int (ms) (bytes)
Active
105 128000 8000 16000 48000 125 2000 -
106 128000 8000 16000 48000 125 2000 -

R4
!
interface Serial0
  ip address 150.50.24.4 255.255.255.0
  encapsulation frame-relay IETF
  no fair-queue
  frame-relay class R4_ts
  frame-relay traffic-shaping
  frame-relay map ip 150.50.24.2 401 broadcast
  frame-relay map ip 150.50.24.4 401
  no frame-relay inverse-arp
  frame-relay lmi-type ansi
!
map-class frame-relay R4_ts
  frame-relay adaptive-shaping becn
  frame-relay cir 64000
  frame-relay bc 8000
  frame-relay be 64000
  frame-relay mincir 16000
!

sh traffic-shape

Interface Se0
        Access Target Byte Sustain Excess Interval Increment
Adapt
VC List Rate Limit bits/int bits/int (ms) (bytes)
Active
405 64000 9000 8000 64000 125 1000
BECN
401 64000 9000 8000 64000 125 1000
BECN

My problem is the Be is correct ?

Sincerely,
Tasuka



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