Enterprise QoS Solution Reference Network Design Guide

WAN Edge Link-Specific QoS Design
3-28
Example 3-17 Slow-Speed (£ 768 kbps) Frame Relay QoS Design Example
!
policy-map MQC-FRTS-768
class class-default
shape average 729600 7296 0 ! Enables MQC-Based FRTS
service-policy WAN-EDGE ! Queues packets headed to the shaper
Enterprise QoS Solution Reference Network Design Guide
Chapter 3 WAN Aggregator QoS Design
!
…
!
interface Serial2/0
no ip address
encapsulation frame-relay
!
interface Serial2/0.12 point-to-point
ip address 10.1.121.1 255.255.255.252
description 768kbps FR Circuit to RBR-3745-Left
frame-relay interface-dlci 102
class FR-MAP-CLASS-768 ! Binds the map-class to the FR DLCI
!
…
!
map-class frame-relay FR-MAP-CLASS-768
service-policy output MQC-FRTS-768 ! Attaches nested MQC policies to map-class
frame-relay fragment 960 ! Enables FRF.12
!
Verification commands:
show policy map
show policy-map interface
show frame-relay fragment
Verification Command: show frame-relay fragment
The show frame-relay fragment command, shown in Example 3-18, provides verification of the
fragment size, regardless of whether regular FRF.12 fragmentation or Frame Relay voice-adaptive traffic
shaping (and fragmentation) is configured for a DLCI. Additionally, dynamic counters monitor how
many frames required fragmentation in either direction.
Example 3-18 show frame-relay fragment Verification of a Slow-Speed Frame Relay Link
WAG-7206-Left#show frame-relay fragment 102
interface dlci frag-type frag-size in-frag out-frag dropped-frag
Serial2/0.12 102 end-to-end 960 5476 2035 0
WAG-7206-Left#
Medium-Speed (£ T1/E1) Frame Relay Links
Recommendation: FRF.12 is not required. cRTP is optional.
The configuration for medium-speed Frame Relay links, illustrated in Figure 3-11 and detailed in
Example 3-19, is identical to that for slow-speed Frame Relay links, with the exception that enabling
FRF.12 no longer is required.
Version 3.3