User's Manual

User’s Manual of SGS-5240 Series Managed Switch
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transmission. An SNMP agent should therefore periodically check the value of lldpStatsRemTableLastChangeTime to detect
any lldpRemTablesChange notification-events missed due to throttling or transmission loss.
◆MED Notification – Enables the transmission of SNMP trap notifications about LLDP-MED changes. (Default: Disabled)
◆Basic Optional TLVs – Configures basic information included in the TLV field of advertised messages.
 Management Address – The management address protocol packet includes the IPv4 address of the switch. If no
management address is available, the address should be the MAC address for the CPU or for the port sending this
advertisement. The management address TLV may also include information about the specific interface associated
with this address, and an object identifier indicating the type of hardware component or protocol entity associated
with this address. The interface number and OID are included to assist SNMP applications in the performance of
network discovery by indicating enterprise specific or other starting points for the search, such as the Interface or
Entity MIB. Since there are typically a number of different addresses associated with a Layer 3 device, an individual
LLDP PDU may contain more than one management address TLV. Every management address TLV that reports an
address that is accessible on a port and protocol VLAN through the particular port should be accompanied by a port
and protocol VLAN TLV that indicates the VLAN identifier (VID) associated with the management address reported
by this TLV.
 Port Description – The port description is taken from the ifDescr object in RFC 2863, which includes information
about the manufacturer, the product name, and the version of the interface hardware/software.
 System Capabilities – The system capabilities identifies the primary function(s) of the system and whether or not
these primary functions are enabled. The information advertised by this TLV is described in IEEE 802.1AB.
 System Description – The system description is taken from the sysDescr object in RFC 3418, which includes the
full name and version identification of the system's hardware type, software operating system, and networking
software.
 System Name – The system name is taken from the sysName object in RFC 3418, which contains the system’s
administratively assigned name. To configure the system name.
◆802.1 Organizationally Specific TLVs – Configures IEEE 802.1 information included in the TLV field of advertised messages.
 Protocol Identity – The protocols that are accessible through this interface.
 VLAN ID – The port’s default VLAN identifier (PVID) indicates the VLAN with which untagged or priority-tagged
frames are associated.
 VLAN Name – The name of all VLANs to which this interface has been assigned.
 Port and Protocol VLAN ID – The port-based protocol VLANs configured on this interface.
◆802.3 Organizationally Specific TLVs – Configures IEEE 802.3 information included in the TLV field of advertised messages.
 Link Aggregation – The link aggregation capabilities, aggregation status of the link, and the IEEE 802.3
aggregated port identifier if this interface is currently a link aggregation member.
 Max Frame Size – The maximum frame size.
 MAC/PHY Configuration/Status – The MAC/PHY configuration and status which includes information about
auto-negotiation support/capabilities, and operational Multistation Access Unit (MAU) type.
◆MED TLVs – Configures general information included in the MED TLV field of advertised messages.
 Capabilities – This option advertises LLDP-MED TLV capabilities, allowing Media Endpoint and Connectivity
Devices to efficiently discover which LLDP-MED related TLVs are supported on the switch.
 Inventory – This option advertises device details useful for inventory management, such as manufacturer, model,
software version and other pertinent information.
 Location – This option advertises location identification details.
 Network Policy – This option advertises network policy configuration information, aiding in the discovery and
diagnosis of VLAN configuration mismatches on a port. Improper network policy configurations frequently result in
voice quality degradation or complete service disruption.