Cisco Catalyst 4224 Release Notes page 8

Important Notes
Use the Portfast Command with a Separate VLAN for Voice and Data
To use the portfast command, configure the Catalyst 4224 ports with an access VLAN for data and a
separate VLAN for voice. The following configuration provides an example:
Note Trunking should be used only to connect to another switch.
Configuring a Single PVC on Frame Relay with CBWFQ
To configure a single PVC on Frame Relay with CBWFQ until LLQ becomes available, see the following
notes.
LLQ is currently disabled.
Note
The Catalyst 4224 currently supports LLQ/CBWFQ only on a PPP or HDLC encapsulated serial link.
The Catalyst 4224 supports LFI on MLPPP links but not LLQ/CBWFQ or ip rtp priority.
LLQ/CBWFQ are not currently supported for Frame Relay. The Service Policy output command is
currently disabled. Therefore, currently only ip rtp priority is supported as a voice priority queuing
scheme. FRF.12 is also supported on Frame Relay links.
The following configuration example is recommended for FRF.12 and ip priority.
Define the map class:
Apply the map class to a frame-relay sub interface:
Apply frame-relay shaping to the main interface:
Use the Portfast Command with a Separate VLAN for Voice and Data
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interface FastEthernet5/22
no ip address
duplex auto
speed auto
switchport access vlan 60
switchport voice vlan 160
snmp trap link-status
spanning-tree portfast
map-class frame-relay VOIP_256
no frame-relay adaptive-shaping
frame-relay cir 250000
frame-relay bc 1000
frame-relay be 0
frame-relay mincir 250000
frame-relay fair-queue
frame-relay fragment 320
frame-relay ip rtp priority 16384 16383 170
interface Serial0/0.300 point-to-point
ip address 1.1.1.1
frame-relay interface-dlci 300
frame-relay class VOIP_256
interface ser0/0
encapsulation frame-relay
frame-relay traffic-shaping
OL-1798-01