The previous lab (ips-09) classified and marked traffic. This one APPLIES the policy to a WAN-egress interface and uses two queueing mechanisms: LLQ (Low Latency Queue) for voice traffic, CBWFQ (Class-Based Weighted Fair Queueing) for everything else. The combination is the canonical Cisco QoS pattern for WAN edge devices.
What you will learn
- Attaching a policy-map to an interface with
service-policy output - How
priority percent Nin a class becomes an LLQ - How
bandwidth percent Nin a class becomes CBWFQ - How to read
show policy-map interfacewith packet counters per class
What this lab does NOT cover
- Class-map / policy-map definition - that was ips-09
- Policing and shaping (different mechanisms)
Topology
Download the CCNA Base Topology .yaml
3 iol-xe routers + 1 alpine + 1 ioll2-xe managed switch.