Cisco 7800 Series Administration Manual page 50

VLAN Settings
IEEE 802.3 MAC/PHY Configuration/Status TLV
The TLV is not for autonegotiation, but for troubleshooting purposes. For the incoming LLDPDU, the TLV
is ignored and not validated. For the outgoing LLDPDU, for the TLV, the octet value autonegotiation
support/status should be:
• Bit 0—Set to 1 to indicate that the autonegotiation support feature is supported.
• Bit 1—Set to 1 to indicate that autonegotiation status is enabled.
• Bit 2-7—Set to 0.
The bit values for the 2 octets PMD autonegotiation advertised capability field should be set to:
• Bit 13—10BASE-T half duplex mode
• Bit 14—10BASE-T full duplex mode
• Bit 11—100BASE-TX half duplex mode
• Bit 10—100BASE-TX full duplex mode
• Bit 15—Unknown
Bit 10, 11, 13 and 14 should be set.
The value for 2 octets operational MAU type should be set to reflect the real operational MAU type:
• 16—100BASE-TX full duplex
• 15—100BASE-TX half duplex
• 11—10BASE-T full duplex
• 10—10BASE-T half duplex
For example, usually, the phone is set to 100BASE-TX full duplex. The value 16 should then be set. The TLV
is optional for a wired network and not applicable for a wireless network. The phone sends out this TLV only
when in wired mode. When the phone is not set for autonegotiation but specific speed/duplexity, for the
outgoing LLDPDU TLV, bit 1 for the octet value autonegotiation support/status should be clear (0) to indicate
that autonegotiation is disabled. The 2 octets PMD autonegotiation advertised capability field should be set
to 0x8000 to indicate unknown.
LLDP-MED Capabilities TLV
For the outgoing LLDPDU, the TLV should have the device type 3 (End Point Class III) with the following
bits set for 2-octet Capability field:
Bit Position
0
1
4
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
36
Capability
LLDP-MED Capabilities
Network Policy
Extended Power via MDI-PD