Administrator Guide

1504 Auto VoIP
Auto VoIP is limited to 16 active sessions and makes use of the switch CPU to
classify traffic. It is preferable to use the Voice VLAN feature in larger
enterprise environments as it uses the switching silicon to classify voice traffic
onto a VLAN.
Auto VoIP is incompatible with Voice VLAN and should not be enabled on
switches on which Voice VLAN is enabled.
How Does Auto VoIP Use ACLs?
Auto VoIP utilizes ACL lists from the global system pool. ACL lists allocated
by Auto VoIP reduce the total number of ACLs available for use by the
network operator. Enabling Auto VoIP uses one ACL list (slice) to monitor for
VoIP sessions. Each monitored VoIP session utilizes two rules from an
additional ACL list. This means that the maximum number of ACL lists
(slices) allocated by Auto VoIP is two.
Default Auto VoIP Values
Table 45-1 shows the global default value for Auto VoIP.
Table 45-1. Auto VoIP Global Defaults
Parameter Default Value
Auto VoIP Disabled