Questions tagged [lldp]
Link-Layer Discovery Protocol (LLDP) is used by network devices to advertise and discover other pieces of equipment across the network. It is defined in IEEE 802.1AB and extended as LLDP-MED in ANSI/TIA-1057.
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NEC IPaso Microwave Packet Trunk troubleshooting
This is a reach, as there's very little on the internet about them and they are ancient. I hope this is appropriate to this site, if there's a more appropriate one please a pointer?
I have a site with ...
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Question on lldp chassis ID TLV
I have a question regarding lldp chassis ID LLDP TLV. If your switches are in a stacking or virtual switching setup, the lldp chassis ID TLV from slave/standby units will be its own chassis MAC ...
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LibreNMS maps > network - Link types of LLDP are not supported
I installed LibreNMS and added six devices. The LLDP protocol is enabled on the devices, and data is being sent from them without any problems. However, I can’t see the neighborhood map. The map tab ...
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Propagation of multicast frames used for networking protocols (e.g., stp, lldp)
I'm looking for proper resources on how frames with multicast destination mac addresses, specifically those used for networking protocols such as STP, are propagated within a layer 2 domain.
For ...
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What is the recommended way to set up POE-LLDP fields after POE-hardware negotiation
I have been working a bit with POE powered devices and POE switches and I wish that the behavior of POE switches when it comes to POE-LLDP was more consistent.
For example, there is one type of switch ...
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Methods to detect when a POE powered DUT is connected to a POE switch behind a POE injector
I am working with POE powered devices, and one use case we see is that our device is connected to a POE injector, but behind the POE injector, there is a POE switch that can do LLDP negotiation.
(The ...
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POE 802.3at hardware vs LLDP negotiation
I have tested a 802.3at switch (POE PSE) that gives the PD device 25.5W through hardware negotiation.
After the PD device boots, it checks the LLDP POE fields and sees this:
So, the switch reports ...
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Interface goes up/down with LLDP neighbor creation message on a HP Aruba Switch
A customer has a HP Aruba Switch (i have no remote access, only via teamviewer) on which an interface goes up/down periodically. The customer has an ESX host connected to that interface, thats how he ...
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Show LLDP neighbors history
Is that possible to view the logs or history of a lldp neighbors, I just want to review a switch if the switch once connected to another switch.
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LLDP query - Why is LLDP supported on routers?
LLDP is a link layer protocol used on switched at layer 2. Why do routers support it since routers work on layer 3?
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Can LLDP be used by other end devices besides VoIP phones?
I've read somewhat about LLDP and LLDP-MED. It seems that as far as end devices go, they're mostly used by VoIP phones.
I'm interested in the idea of an end device implementing LLDP or LLDP-MED, so ...
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How can i find which cisco switch port is connnected to specific port of Fortigate?
there is any way to find that which switch port connected to mgmt port of fortigate?
for example can i enable lldp on Cisco switch and Fortigate together?
Fortigate 1500D (version 5.6.2) and switch is ...
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Connecting DELL N1548 to HP Core switch with LAN
I currently have a setup with a HP core switch with few VLANs configured on it e.g. vlan 10, 20, 30, 40.
However when I uplink my DELL N1548 to the HP core switch, I cannot connect anything behind ...
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POE negotiation between IEEE PD and the POE Switch?
I know that there happens a negotiation between the IEEE PD devices and directly connected POE Switch through CDP or LLDP protocols. But if for some unknown reasons, if the CDP/LLDP is disabled on the ...
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Is there a Layer 2 address advertising protocol?
I needed help in understanding if LLDP/CDP is the Layer 2 equivalent to RIP or say any Layer 3 route advertising protocol. If not,is there a protocol that advertises the MAC Address Tables among ...
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