Information Technology Reference
In-Depth Information
class. It also reduces jitter for voice and video streams because it gives priority to those
traffic types. With LLQ for Frame Relay, queues are set up on a per-PVC basis. Each PVC
has a PQ to support voice traffic. This congestion management method is considered the
most optimal for voice.
No LFI
FTP data
IP Voice
Output
Line
Transmit
Queue
Transmit
Queue
HTTP
With LFI
FTP data
Transmit
Queue
Output
Line
IP Voice
HTTP
interleaving
Fragmentation
Figure 14-26
LFI
Class
Priority
Priority
Queue
WFQ
Classification
Reserved
Queue 1
Class 1
Interface
Output
Scheduler
Reserved
Queue 2
Class 2
Class
Default
Unreserved
Queue
Figure 14-27
LLQ
