LLDP

LLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet., defined in theIEEEInstitute of Electrical and Electronics Engineers.802.1AB standard, is a Layer 2 protocol that allows network devices to advertise their identity and capabilities on aLANLocal Area Network. A LAN is a network of connected devices within a distinct geographic area such as an office or a commercial establishment and share a common communications line or wireless link to a server..ArubaOSsupports a simple one-way neighbor discovery protocol with periodic transmissions ofLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.PDUs, allowingmanaged devicesto advertise identity information and capabilities to other nodes on the network and store the information discovered about the neighbors.

LLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.supported devices use attributes known as TLVs to receive and send information such as configuration information, device capabilities, and device identity to their neighbors. These TLVs contain type, length, and value descriptions, use the destinationMACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network.address 01:80:c2:00:00:0e, and are constrained to a local link.SNMPSimple Network Management Protocol. SNMP is a TCP/IP standard protocol for managing devices on IP networks. Devices that typically support SNMP include routers, switches, servers, workstations, printers, modem racks, and more. It is used mostly in network management systems to monitor network-attached devices for conditions that warrant administrative attention.support is available forLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.MIBsManagement Information Base. A hierarchical database used by SNMP to manage the devices being monitored..

The following sections describe:

Supported TLVs

ArubaOSsupports the following basic management TLVs, all of which are enabled by default:

MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network.Phy configurationTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

Management addressTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

Maximum frame sizeTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

Port-descriptionTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

PortVLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN.IDTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

System capabilitiesTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

System descriptionTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

System nameTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

VLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN.nameTLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.

LLDP-MED

LLDP-MEDLLDP–Media Endpoint Discovery. LLDP-MED facilitates information sharing between endpoints and network infrastructure devices.is an extension toLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.that supports interoperability betweenVoIPVoice over IP. VoIP allows transmission of voice and multimedia content over an IP network.devices and other networking clients.LLDP-MEDLLDP–Media Endpoint Discovery. LLDP-MED facilitates information sharing between endpoints and network infrastructure devices.network policy discovery lets end-points and network devices advertise theirVLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN.IDs (for example, voiceVLANVirtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN.), priority levels, andDSCPDifferentiated Services Code Point. DSCP is a 6-bit packet header value used for traffic classification and priority assignment.values.ArubaOSsupports a maximum of eightLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.-MED Network Policy profiles.

Creating anLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.MED network policy profile does not apply the configuration to any AP or AP interface or interface group. To apply theLLDP-MEDLLDP–Media Endpoint Discovery. LLDP-MED facilitates information sharing between endpoints and network infrastructure devices.network policy profile, you must associate it to anLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.profile, then apply thatLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.profile to an AP wired port profile.

You can use the command,ap lldp med-network-policy-profileto define anLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.MED network policy profile that definesDSCPDifferentiated Services Code Point. DSCP is a 6-bit packet header value used for traffic classification and priority assignment.values and L2 priority levels for a voice or video application.

When you use the defaultLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.configuration, theLLDP RXandLLDP TXparameters are disabled. You must explicitly enable them forLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.to work.

Restrictions and Limitations

Inventory-management and Location TLVs are not currently supported.

Aggregation-management and Power-management TLVs are not supported.

CDPCisco Discovery Protocol. CDP is a proprietary Data Link Layer protocol developed by Cisco Systems. CDP runs on Cisco devices and enables networking applications to learn about the neighboring devices directly connected to the network.proprietary is not supported.

The maximum number of neighbors that can be learned on themanaged device(including all the per port neighbors) is 250.

Configuring LLDP

ConfigureLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.using the following commands on a specificmanaged deviceinterface. For detailed information on theLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.commands, refer to theinterface fastethernet | gigabitethernet,show lldpandshow ap lldpcommand in theArubaOSCLI Reference Guide.

(主机)[mynode](配置)#terface gigabitethernet //

(host) [mynode] (config-if) #lldp

fast-transmit-counter <1-8>

fast-transmit-interval <1-3600>

med

receive

transmit

transmit-hold <1-100>

transmit-interval <1-3600>

如果你使用the defaultLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.configuration, thetransmitandReceiveparameters are disabled. You must explicitly enable them forLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.to work.

Configuring LLDP-MED

When you create anLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.MED network policy profile, you must associate it to anLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.profile, then apply thatLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.profile to an AP wired port profile.

The following commands create aLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.MED network policy profile for streaming video applications and marks streaming video as high-priority traffic.

(host) [mynode] (config) #ap lldp med-network-policy-profile vid-stream

(host) [mynode] (AP LLDP-MED Network Policy Profile "vid-stream") #dscp 48

(host) [mynode] (AP LLDP-MED Network Policy Profile "vid-stream") #l2-priority 6

(host) [mynode] (AP LLDP-MED Network Policy Profile "vid-stream") #tagged

(host) [mynode] (AP LLDP-MED Network Policy Profile "vid-stream") #vlan 10

Next, theLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.MED network policy profile is assigned to anLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.profile, and theLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.profile is associated with an AP wired-port profile.

(host) [mynode] (config) #ap lldp profile video1

(host) [mynode] (AP LLDP Profile "video1") #lldp-med-network-policy-profile vid-stream

(host) [mynode] (config) #ap wired-port-profile corp2

(host) [mynode] (AP wired port profile "corp2") #lldp-profile video1

监视LLDP数据和配置

The following show commands display aggregate and per-interface information aboutLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.configurations and neighborhood data.

Table 1:LLDP Show Commands

Command	Description
show lldp interfacegigabitethernet <槽> / <模块> / <端口>	DisplaysLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.information for all interfaces, or include the optionalgigabitethernet<槽> / <模块> / <端口>parameters to displayLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.information for a specific interface.
show lldp neighborgigabitethernet <槽> / <模块> / <端口> [details]	This command displays information aboutLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.peers, including the name of the neighbor,MACMedia Access Control. A MAC address is a unique identifier assigned to network interfaces for communications on a network.address and the capabilities of the peer to operate as a router, bridge, access point, phone or other network device. Include the optionalgigabitethernet<槽> / <模块> / <端口>parameters to display detailed information aboutLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.neighbors for a specific interface, or include thedetailsparameter to display additional details about the device type, andLLDP-MEDLLDP–Media Endpoint Discovery. LLDP-MED facilitates information sharing between endpoints and network infrastructure devices., if applicable.
show lldp statisticsgigabitethernet <槽> / <模块> / <端口>	Displays information aboutLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.TLVs sent and received on all interfaces, or include the optionalgigabitethernet<槽> / <模块> / <端口>parameters to displayLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.TLVType-length-value or Tag-Length-Value. TLV is an encoding format. It refers to the type of data being processed, the length of the value, and the value for the type of data being processed.statistics for a specific interface.
show ap lldp med-network-policy-profile	Displays a list ofLLDP-MEDLLDP–Media Endpoint Discovery. LLDP-MED facilitates information sharing between endpoints and network infrastructure devices.Network Policy profiles, or display the current configuration settings of an individual profile.
show ap lldp counters	ShowsLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.counters for a specific AP, or all APs sending or receivingLLDPLink Layer Discovery Protocol. LLDP is a vendor-neutral link layer protocol in the Internet Protocol suite used by network devices for advertising their identity, capabilities, and neighbors on an IEEE 802 local area network, which is principally a wired Ethernet.PDUs.
show ap lldp []	Displays a list ofLLDP-MEDLLDP–Media Endpoint Discovery. LLDP-MED facilitates information sharing between endpoints and network infrastructure devices.Network Policy profiles, or display the current configuration settings of an individual profile.