Здравствуйте,
на сети есть коммутаторы DES-3028 и DES-3200-52 C1,
прошивки соответственно Build 2.94.B14 и Build 4.42.B009.
Коммутаторы стоят друг за другом,
настроен lldp
для 3028

enable lldp
config lldp message_tx_interval 30
config lldp tx_delay 2
config lldp message_tx_hold_multiplier 4
config lldp reinit_delay 2
config lldp notification_interval 5
config lldp forward_message enable
config lldp ports 1-28 notification disable
config lldp ports 1-24 admin_status disable
config lldp ports 25-28 admin_status tx_and_rx
config lldp ports 25-28 basic_tlvs port_description system_name system_description system_capabilities enable
config lldp ports 25-28 mgt_addr ipv4 х.х.х.х enable

для 3200-52

enable lldp
config lldp message_tx_interval 30
config lldp tx_delay 2
config lldp message_tx_hold_multiplier 4
config lldp reinit_delay 2
config lldp notification_interval 5
config lldp forward_message enable
config lldp ports 1-52 notification disable
config lldp ports 1-48 admin_status disable
config lldp ports 49-52 admin_status tx_and_rx
config lldp ports 49-52 basic_tlvs port_description system_name system_description system_capabilities enable
config lldp ports 49-52 mgt_addr ipv4 x.x.x.x enable

Запрос с 3028

sh lldp remote ports
Command: show lldp remote_ports

Remote Entities Count : 0

Завпрос с 3200-52

:admin#show lldp remote_ports 50
Command: show lldp remote_ports 50

Port ID : 50
-------------------------------------------------------------------------------
Remote Entities Count : 1
Entity 1
Chassis ID Subtype : MAC Address
Chassis ID : 00-1E-58-A8-1D-CA
Port ID Subtype : Local
Port ID : 1/26
Port Description : D-Link DES-3028 R2.94 Port 26
System Name :
System Description : Fast Ethernet Switch
System Capabilities : Repeater, Bridge
Management Address Count : 1
Port PVID : 0
PPVID Entries Count : 0
VLAN Name Entries Count : 0
Protocol ID Entries Count : 0
MAC/PHY Configuration/Status : (None)
Power Via MDI : (None)
Link Aggregation : (None)
Maximum Frame Size : 0
Unknown TLVs Count : 0

Вопрос почему 3028 не видит 3200-52 ?
Как лечить?