Cisco 521SG - Unified IP Phone VoIP Administration Manual page 145

Configuring Security, Quality, and Network Features
Configuring VLAN Settings
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
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, in most cases, 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 will send out this TLV only when in wired mode.
When the phone is not set for auto-negotiation but specific speed/duplexity, for
the outgoing LLDPDU TLV, bit 1 for the octet value auto-negotiation support/status
should be clear (0) to indicate auto-negotiation is disabled. The 2 octets PMD auto-
negotiation advertised capability field should be set to 0x8000 to indicate
unknown. The Cisco SPA525G/525G2 allows the administrator to set the switch
operational mode to auto-negotiation or to a specific speed/duplexity.
LLDP-MED Capabilities TLV
For the outgoing LLDPDU, the TLV should have the device type 3 (End Point Class
III) and with the following bits set for 2-octet Capability field:
Bit Position Capability
0 LLDP-MED Capabilities
1 Network Policy
4 Extended Power via MDI-PD
5 Inventory
For the incoming TLV, if the LLDP-MED TLV is not present, the LLDPDU is
discarded. The LLDP-MED Capabilities TLV is mandatory and only one is allowed
for the outgoing and incoming LLDPDUs. Any other LLDP-MED TLVs will be ignored
if they present before the LLDP-MED Capabilities TLV.
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