Cisco 8831 Administration Manual page 48

Configure VLAN Settings
LLDP-MED Extended Power-Via-MDI TLV
In the TLV for the outgoing LLDPDU, the binary value for Power Type is set to "0 1" to indicate the
power type for phone is PD Device. The Power source for the phone is set "PSE and local" with binary
value "1 1". The Power Priority is set to binary "0 0 0 0" to indicate unknown priority while the Power
Value is set to maximum power value. The Power Value for the conference phone is 12900mW.
For the incoming LLDPDU, the TLV is ignored and not validated. Only one TLV is allowed in the
outgoing and incoming LLDPDUs. The phone will send out the TLV for wired network only.
The LLDP-MED standard was originally drafted in the context of Ethernet. Discussion is ongoing for
LLDP-MED for Wireless Networks. Refer to ANSI-TIA 1057, Annex C, C.3 Applicable TLV for
VoWLAN, table 24. It is recommended that the TLV is not applicable in the context of the wireless
network. This TLV is targeted for use in the context of PoE and Ethernet. The TLV, if added, will not
provide any value for network management or power policy adjustment at the switch.
LLDP-MED Inventory Management TLV
This TLV is optional for Device Class III. For the outgoing LLDPDU, we support only Firmware
Revision TLV. The value for the firmware revision is the firmware version. For the incoming LLDPDU,
the TLVs are all ignored and not validated. Only one Firmware Revision TLV is allowed for the outgoing
and incoming LLDPDUs.
Final Network Policy Resolution and QoS For the Phone
The following sections describe network policy and QoS for the IP phones.
Special VLANs
VLAN=0, VLAN=1 and VLAN=4095 are treated the same way as an untagged VLAN. As the VLAN is
untagged, CoS is not applicable.
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 predefined 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 configuration for the specific extension.
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.
The phone reboots and restarts the fast start sequence.
•
Cisco Unified IP Conference Phone 8831 for Third-Party Call Control Administration Guide
4-10
Chapter 4 Configure Security, Quality, and Network Features