Info on Be, Bc for Frame-Relay

[somanabich]

Can anyone point me to info on these parameters when configure Frame-Relay Traffic Shaping?

Are these values derived from my AR and CIR or is there some calclulation that I mus perform.

Any help appreciated.

[mmikhail]

• Tc—Committed Rate Measurement Interval

(Bc/CIR)

• Bc—Committed Burst Size

• Be—Excess Burst Size

• CIR—Committed Information Rate

• MinCIR—Minimum Committed Information Rate

[GRAEME DANIELSON]

Also take a look at these:

http://www.cisco.com/warp/customer/125/traffic_shaping_6151.html

http://www.cisco.com/warp/customer/788/voip/fr_traffic.html

[somanabich]

Thanks Guys.

However I would still like some clarification.

I have two (for now) remote site that have CIR=40, AR=64. The central site has a AR=512K.

Would I configure the Central router as follows;

interface serial 0

no ip address

encapsulation frame-relay

frame-relay traffic-shaping

frame-relay class my_class

!

interface Serial0.1 point-to-point

description VC to remote site 1

ip address 192.168.245.254 255.255.255.252

frame-relay interface-dlci 16

!

!

interface Serial0.1 point-to-point

description VC to remote site 2

ip address 192.168.245.250 255.255.255.252

frame-relay interface-dlci 17

!

map-class frame-relay my_class

frame-relay adaptive-shaping becn

frame-relay traffic-rate 40000 64000

!

Is this correct? Any help appreciated.

[GRAEME DANIELSON]

Yes, the sub-interfaces inherit the class from the main interface. If you want to add a new sub-interface with different parameters create a new class then apply the new class directly to the sub-interface.

[somanabich]

Thanks for that.

However have I got the details of class correct, i.e. Do I throttle the bandwidth of the main router sub-interface to correspond to the remote routers AR and CIR?

Also, are Be and Bc assigned by Frame-Relay Service provider for each of my PVCs?