Description

Link Layer Discovery Protocol-Media Endpoint Discovery (LLDP-MED) is an extension to LLDP. On PTX EVO platforms, LLDP MED TLVs are not displayed under the Supported LLDP TLV list in the show lldp detail CLI output because LLDP MED is not supported on PTX EVO platforms.

This article provides more information.

Symptoms

On PTX EVO, LLDP MED TLVs are not displayed in the Supported LLDP TLV list in the output of show lldp detail CLI output.

Test Topology

              et-0/0/0           et-0/0/0
PTX10008 EVO --------------------------- MX10008 JUNOS
{MASTER}
User@PTX10008-re0> show configuration interfaces et-0/0/0
speed 100g;
unit 0 {
    family inet {
        address 192.168.10.1/30;
    }
}

{MASTER}
User@PTX10008-re0> show configuration protocols lldp
interface et-0/0/0;

User@MX10008-re0> show configuration interfaces et-0/0/0
unit 0 {
    family inet {
        address 192.168.10.2/30;
    }
}

User@MX10008-re0> show configuration protocols lldp
interface et-0/0/0;

{MASTER}
User@PTX10008-re0> show lldp detail

LLDP                      : Enabled
Advertisement interval    : 30 seconds
Transmit delay            : 2 seconds
Hold timer                : 120 seconds
Notification interval     : 5 Second(s)
Tx fast start count      : 1 Packets
Config Trap Interval      : 0 seconds
Connection Hold timer     : 300 seconds
Port ID TLV subtype       : locally-assigned
Port Description TLV type : interface-alias (ifAlias)

Interface      Parent Interface    LLDP        LLDP-MED     Power Negotiation     Neighbor count
et-0/0/0       -                   Enabled                  Enabled               1

Basic Management TLVs supported:
End Of LLDPDU, Chassis ID, Port ID, Time To Live, Port Description, System Name, System Description, System Capabilities, Management Address

Organizationally Specific TLVs supported:
Port VLAN tag, Port VLAN name, MAC/PHY configuration/status, Link aggregation, Maximum Frame Size

User@MX10008-re0> show lldp detail

LLDP                      : Enabled
Advertisement interval    : 30 seconds
Transmit delay            : 2 seconds
Hold timer                : 120 seconds
Notification interval     : 5 Second(s)
Tx fast start count      : 1 Packets
Config Trap Interval      : 0 seconds
Connection Hold timer     : 300 seconds

LLDP MED                  : Disabled
Port ID TLV subtype       : locally-assigned
Port Description TLV type : interface-alias (ifAlias)

Interface      Parent Interface    LLDP        LLDP-MED     Power Negotiation     Neighbor count
et-0/0/0       -                   Enabled     -            Enabled               1

Basic Management TLVs supported:
End Of LLDPDU, Chassis ID, Port ID, Time To Live, Port Description, System Name, System Description, System Capabilities, Management Address

Organizationally Specific TLVs supported:
MAC/PHY configuration/status, Power via MDI, Link aggregation, Maximum Frame Size, Port VLAN tag, Port VLAN name, Cloud Reachability Status, Phone-home Status
Supported LLDP MED TLVs:
LLDP MED capabilities, Network policy, Endpoint location, Extended power
Via MDI.

Solution

Power over Ethernet (PoE) is not supported on any of the PTX EVO platforms, and hence there is no need for LLDP MED in PTX EVO.

No action is required because POE is not supported on PTX EVO platforms and therefore unsupported TLVs will not be displayed.

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