Extreme Networks ExtremeWare XOS Guide Manual page 154

Link Layer Discovery Protocol
System Capabilities TLV
You configure this TLV to be advertised or not advertised. The system capabilities TLV indicates the
device's capabilities and which of these are enabled.
The ExtremeWare XOS software advertises bridge and router capabilities. When configured to advertise
the system capabilities, Extreme Networks devices advertise bridging capabilities. Once at least one
VLAN on the device has IP forwarding enabled, the system automatically advertises router capabilities.
Management Address TLV
You configure this TLV to be advertised or not advertised. The management address TLV supplies the
management entity for the device.
ExtremeWare XOS advertises only one management TLV. That management TLV is the IP address of the
management VLAN. If the management VLAN does not have an assigned IP address, the management
address TLV advertises the system's MAC address. LLDP does not recognize IPv6 addresses in this
field.
VLAN Name TLV
You configure this TLV to be advertised or not advertised. This TLV can be repeated several times
within one LLDPDU.
The ExtremeWare XOS software allows you to advertise VLAN name information to neighboring
devices. This TLV associates a VLAN name to the IEEE 802.1Q tag assigned to that VLAN.
You can enable this TLV for tagged and untagged VLANs. When you enable this TLV for tagged
VLANs, the TLV advertises the IEEE 802.1Q tag for that VLAN. (For untagged VLANs, the internal tag
is advertised.) You can specify exactly which VLANs to advertise.
By default, once you configure this TLV, the system sends all VLAN names on the port. However, each
VLAN name requires 32 bits and the LLDPDU cannot exceed 1500 bytes, so you should configure the
port to advertise only the specified VLANs.
Port VLAN ID TLV
You configure this TLV to be advertised or not advertised. The port VLAN ID advertises the untagged
VLAN on that port. Thus, only one port VLAN ID TLV can exist in the LLDPDU.
If you configure this TLV and there is no untagged VLAN on the particular port, this TLV is not
included in the LLDPDU.
Port and Protocol VLAN ID TLV
You configure this TLV to be advertised or not advertised. This TLV can be repeated several times
within one LLDPDU.
When configured, this TLV allows the port to advertise VLANs and whether the port supports protocol-
based VLANs or not. If no protocol-based VLANs are configured on the port, the TLV still advertises
the port's capability and sets the VLAN ID value to zero.
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ExtremeWare XOS 11.3 Concepts Guide