Configuring Security, Quality, and Network Features
Configuring VLAN Settings
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 163
5
Default QoS for SIP Mode
If there is no network policy from CDP or LLDP-MED, the default network policy is
used. CoS is based on configuration for the specific extension. It is applicable only
if the manual VLAN is enabled and manual VLAN ID is not equal to 0, 1, or 4095.
ToS is based on configuration for the specific extension.
Default QoS for SPCP Mode
If there is no network policy from CDP or LLDP-MED, the default network policy is
used. CoS is based on a pre-defined value of 5. It is applicable only if the manual
VLAN is enabled and manual VLAN ID is not equal to 0, 1, or 4095. ToS is based on
precedence value from the StartMediaTransmission Message from the Unified
Communications 500 Series for the Cisco SPA525G/525G2. However, ToS is
based on the value specified for the specific extension in the web administration
interface for the Cisco SPA50X IP phone.
QoS Resolution for CDP
If there is a valid network policy from CDP:
• If the VLAN=0, 1 or 4095, the VLAN will not be set, or the VLAN is untagged.
CoS is not applicable, but DSCP is applicable. ToS is based on the default
as previously described.
• If the VLAN > 1 and VLAN< 4095, the VLAN is set accordingly. CoS and ToS
are based on the default as previously described. DSCP is applicable.
• For the Cisco SPA525G/525G2, when the VLAN is changed, the user sees
the voice component refreshed when the IP address is changed. For the
Cisco SPA50X, the phone reboots and restarts the fast start sequence.
QoS Resolution for LLDP-MED
If CoS is applicable and if CoS=0, the default will be used for the specific
extension as previously described. But the value shown on L2 Priority for TLV for
outgoing LLDPDU is based on value used for extension 1. If CoS is applicable and
if CoS != 0, CoS will be used for all extensions.
If DSCP (mapped to ToS) is applicable and if DSCP=0, the default will be used for
the specific extension as previously described. But the value show on DSCP for
TLV for outgoing LLDPDU is based on value used for the extension 1. If DSCP is
applicable and if DSCP != 0, DSCP will be used for all extensions.
If the VLAN > 1 and VLAN < 4095, the VLAN is set accordingly. CoS and ToS are
based on the default as previously described. DSCP is applicable.
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