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lldp: rewrite with new cfgcmd/opcmd syntax
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Christian Poessinger
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@ -1,7 +1,8 @@
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.. _lldp:
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####
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LLDP
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----
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####
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:abbr:`LLDP (Link Layer Discovery Protocol)` is a vendor-neutral link layer
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protocol in the Internet Protocol Suite used by network devices for advertising
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@ -11,19 +12,17 @@ as Station and Media Access Control Connectivity Discovery specified in IEEE
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802.1AB and IEEE 802.3-2012 section 6 clause 79.
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LLDP performs functions similar to several proprietary protocols, such as
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`Cisco Discovery Protocol`_, `Foundry Discovery Protocol`_,
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Nortel Discovery Protocol and Link Layer Topology Discovery.
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:abbr:`CDP (Cisco Discovery Protocol)`, :abbr:`FDP (Foundry Discovery Protocol)`,
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:abbr:`NDP (Nortel Discovery Protocol)` and :abbr:`LLTD (Link Layer Topology
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Discovery)`.
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Information gathered
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^^^^^^^^^^^^^^^^^^^^
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Information gathered with LLDP is stored in the device as a management
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information database (MIB_) and can be queried with the Simple Network
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Management Protocol (SNMP_) as specified in :rfc:`2922`. The topology of an
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Information gathered with LLDP is stored in the device as a :abbr:`MIB
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(Management Information Database)` and can be queried with :abbr:`SNMP (Simple
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Network Management Protocol)` as specified in :rfc:`2922`. The topology of an
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LLDP-enabled network can be discovered by crawling the hosts and querying this
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database. Information that may be retrieved include:
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* System name and description
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* System Name and Description
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* Port name and description
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* VLAN name
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* IP management address
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@ -33,67 +32,111 @@ database. Information that may be retrieved include:
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* Link aggregation
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Configuration
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^^^^^^^^^^^^^
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=============
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* Enable service with:
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.. cfgcmd:: set service lldp
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:code:`set service lldp`
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Enable LLDP service
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Options
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*******
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.. cfgcmd:: set service lldp management-address <address>
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* Configure a Define management-address:
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Define IPv4 management address transmitted via LLDP.
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:code:`set service lldp management-address <x.x.x.x>`
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.. cfgcmd:: set service lldp interface <interface>
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* Define listening interfaces
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Enable transmission of LLDP information on given `<interface>`. You can also
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say ``all`` here so LLDP is turned on on every interface.
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:code:`set service lldp interface <all|interface name>`
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.. cfgcmd:: set service lldp interface <interface> disable
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* LLDPd also implements an SNMP subagent. To Enable SNMP queries of the LLDP
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database:
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Disable transmit of LLDP frames on given `<interface>`. Useful to exclude
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certain interfaces from LLDP when ``all`` have been enabled.
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:code:`set service lldp snmp enable`
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.. cfgcmd:: set service lldp snmp enable
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* Enable optional/other protocols
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Enable SNMP queries of the LLDP database
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:code:`set service lldp legacy-protocols cdp`
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Supported legacy protocols:
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.. cfgcmd:: set service lldp legacy-protocols <cdp|edp|fdp|sonmp>
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Enable given legacy protocol on this LLDP instance. Legacy protocols include:
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* ``cdp`` - Listen for CDP for Cisco routers/switches
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* ``edp`` - Listen for EDP for Extreme routers/switches
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* ``fdp`` - Listen for FDP for Foundry routers/switches
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* ``sonmp`` - Listen for SONMP for Nortel routers/switches
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Operation
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=========
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Display neighbors
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^^^^^^^^^^^^^^^^^
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.. opcmd:: show lldp neighbors
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* Display with:
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``show lldp neighbors``
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Exemple:
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Displays information about all neighbors discovered via LLDP.
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.. code-block:: none
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vyos@vyos:~# show lldp neighbors
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Capability Codes: R - Router, B - Bridge, W - Wlan r - Repeater, S - Station
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D - Docsis, T - Telephone, O - Other
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Device ID Local Proto Cap Platform Port ID
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--------- ----- ----- --- -------- -------
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swA309 eth0 LLDP ? Cisco IOS Software, GigE0/33
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Switch0815 eth0 LLDP B Cisco IOS Software, Gi0/4
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.. opcmd:: show lldp neighbors detail
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* Options:
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Get detailed information about LLDP neighbors.
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* ``detail`` - Show lldp neighbors detail
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* ``interface`` - Show LLDP for specified interface
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.. code-block:: none
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Troubleshooting
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^^^^^^^^^^^^^^^
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vyos@vyos:~# show lldp neighbors detail
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-------------------------------------------------------------------------------
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LLDP neighbors:
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-------------------------------------------------------------------------------
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Interface: eth0, via: LLDP, RID: 1, Time: 12 days, xxxx:xxxx:40
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Chassis:
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ChassisID: mac 00:50:40:20:03:00
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SysName: Switch0815
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SysDescr: Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 15.0(2)SE11, RELEASE SOFTWARE (fc3)
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Technical Support: http://www.cisco.com/techsupport
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Copyright (c) 1986-2017 by Cisco Systems, Inc.
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Compiled Sat 19-Aug-17 09:34 by prod_rel_team
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MgmtIP: 192.0.2.201
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Capability: Bridge, on
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Port:
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PortID: ifname Gi0/4
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PortDescr: GigabitEthernet0/4
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TTL: 120
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PMD autoneg: supported: yes, enabled: yes
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Adv: 10Base-T, HD: yes, FD: yes
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Adv: 100Base-TX, HD: yes, FD: yes
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Adv: 1000Base-T, HD: no, FD: yes
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MAU oper type: 1000BaseTFD - Four-pair Category 5 UTP, full duplex mode
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VLAN: 1, pvid: yes
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LLDP-MED:
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Device Type: Network Connectivity Device
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Capability: Capabilities, yes
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Capability: Policy, yes
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Capability: Location, yes
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Capability: Inventory, yes
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LLDP-MED Network Policy for: Voice, Defined: no
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Priority: Best effort
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PCP: 0
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DSCP Value: 0
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LLDP-MED Network Policy for: Voice Signaling, Defined: no
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Priority: Best effort
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PCP: 0
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DSCP Value: 0
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Inventory:
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Hardware Revision: WS-C2960G-8TC-L (PowerPC405):C0
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Software Revision: 15.0(2)SE11
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Manufacturer: Cisco Systems, Inc.
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Model: WS-C2960G-8TC-L
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Use operational command ``show log lldp`` to display logs.
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.. opcmd:: show lldp neighbors interface <interface>
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.. include:: references.rst
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Show LLDP neighbors connected via interface `<interface>`.
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.. opcmd:: show log lldp
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Used for troubleshooting.
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@ -1,5 +1,3 @@
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.. _`Cisco Discovery Protocol`: https://en.wikipedia.org/wiki/Cisco_Discovery_Protocol
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.. _`Foundry Discovery Protocol`: https://en.wikipedia.org/wiki/Foundry_Discovery_Protocol
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.. _MIB: https://en.wikipedia.org/wiki/Management_information_base
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.. _SNMP: https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol
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.. _SNMPv2: https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol#Version_2
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