As first and very basic option, you may use Generic Traffic Shaping to implement FRTS. This is a common technique, not unique to Frame-Relay, with the following properties:
-Configured by using traffic-shape interface command
- As with standard GTS, internal shaper queue is basic WFQ
-Configured per inteface/subinteface (no PVC granularity)
- GTS may adapt to BECNs & reflect FECNs (BECN received at any interface/subinteface PVC will cause shaper rate to throttle back to minCIR)
-FECN reflection activates sending BECNs in responce to incoming FECN frames. Note, that FECN/BECN responce requires provider to mark frames with FECN/BECN bits
-You can configure Fancy-Queueing (WFQ/PQ/CQ) at physical interface level with GTS.Example:
!! Physical Interface, fancy-queueing may apply here
!
interface Serial 0/0/0:0 no ip address
encapsulation frame-relay fair-queue
!
! Subinterface, apply GTS here!interface Serial0/0/0:0.1 point-to-point
ip address 177.0.112.1 255.255.255.0 !
! Shaping rate !
traffic-shape rate 512000 !
! "MinCIR", adapt to BECNs !
traffic-shape adaptive 256000 !
! Reflect FECNs as BECNs !
traffic-shape fecn-adapt frame-relay interface-dlci 112Verification:
Rack1R1#show traffic-shape
Interface Se0/0/0:0.1 Access Target Byte Sustain Excess Interval Increment Adapt
VC List Rate Limit bits/int bits/int (ms) (bytes)
Active-512000 3200 12800 12800 25 1600 BECN
Rack1R1#show traffic-shape statistics Acc. Queue Packets Bytes Packets Bytes Shaping
I/F List Depth Delayed Delayed
ActiveSe0/0/0:0.10 157 10500 0 0 no
Rack1R1#show traffic-shape queueTrafficqueued in shaping queue on Serial0/0/0:0.1
Queueing strategy: weighted fair Queueing Stats: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/32 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 512 kilobits/secShareThis
