Specifications

Chapter 1 Product Overview
Application Notes
1-16
Catalyst 4224 Access Gateway Switch Software Configuration Guide
OL-2031-02
Similar to other voice-enabled Catalyst platforms, the Catalyst 4224 learns that an
IP phone is attached to the port via the CDP message exchange.
Layer 3 QoS
You can configure QoS on the Layer 3 CPU from the CLI, which is very similar
to the interface on the Cisco 1750, Cisco 2600 series, and Cisco 3600 series
routers.
WAN QoS Queuing and Scheduling
The Catalyst 4224 supports WAN QoS queuing and scheduling. Table 1-4 shows
Catalyst 4224 WAN QoS queuing and scheduling features.
The Service Policy command is disabled for Frame Relay.
Summary of the Layer 3 WAN QoS Features
In summary, the Catalyst 4224 supports the following Cisco IOS Layer 3 WAN
QoS features:
• Classification and Marking
– Access control lists (ACL)
– Class-based marking
– Class-based matching
– Committed Access Rate (CAR)
Table 1-4 Catalyst 4224 WAN QoS Queuing and Scheduling Features
Frame Relay MLPPP PPP HDLC
No LLQ/CBWFQ No LLQ/CBWFQ LLQ/CBWFQ LLQ/CBWFQ
IP RTP Priority No IP RTP
Priority
IP RTP Priority
with CBWFQ
IP RTP Priority
FRF.12 LFI