348
LLDP Port Configuration
The LLDP port settings relate to the currently selected stack unit, as reflected by the page header.
Object
Description
Port
The switch port number of the logical LLDP port.
Mode
Select LLDP mode.
All
means all ports will have one specific setting.
Rx only
The switch will not send out LLDP information, but LLDP information
from neighbor units is analyzed.
Tx only
The switch will drop LLDP information received from neighbors, but
will send out LLDP information.
Disabled
The switch will not send out LLDP information, and will drop LLDP
information received from neighbors.
Enabled
The switch will send out LLDP information, and will analyze LLDP
information received from neighbors.
CDP Aware
Select CDP awareness.
The CDP operation is restricted to decoding incoming CDP frames (The switch
doesn't transmit CDP frames). CDP frames are only decoded if LLDP on the port
is enabled.
Only CDP TLVs that can be mapped to a corresponding field in the LLDP
neighbours' table are decoded. All other TLVs are discarded (Unrecognized CDP
TLVs and discarded CDP frames are not shown in the LLDP statistics.). CDP
TLVs are mapped onto LLDP neighbours' table as shown below.
CDP TLV "Device ID" is mapped to the LLDP "Chassis ID" field.
CDP TLV "Address" is mapped to the LLDP "Management Address" field. The
CDP address TLV can contain multiple addresses, but only the first address is
shown in the LLDP neighbours table.
CDP TLV "Port ID" is mapped to the LLDP "Port ID" field.
CDP TLV "Version and Platform" is mapped to the LLDP "System Description"
field.
Both the CDP and LLDP support "system capabilities", but the CDP capabilities
cover capabilities that are not part of the LLDP. These capabilities are shown as
"others" in the LLDP neighbours' table.
If all ports have CDP awareness disabled the switch forwards CDP frames
received from neighbour devices. If at least one port has CDP awareness
enabled all CDP frames are terminated by the switch.
Note: When CDP awareness on a port is disabled the CDP information isn't
removed immediately, but gets removed when the hold time is exceeded.
Summary of Contents for NS4750-24S-4T-4X
Page 1: ...NS4750 24S 4T 4X User Manual P N 1702826 REV 00 01 ISS 14JUL14 ...
Page 56: ...56 Figure 4 2 7 Privilege Levels Configuration Page Screenshot ...
Page 110: ...110 Figure 4 4 6 Mirror Configuration Page Screenshot ...
Page 117: ...117 Figure 4 5 4 LACP Port Configuration Page Screenshot ...
Page 174: ...174 Figure 4 7 10 MST1 MSTI Port Configuration Page Screenshot ...
Page 180: ...180 Figure 4 8 2 Multicast Flooding ...
Page 249: ...249 Figure 4 9 18 Voice VLAN Configuration Page Screenshot ...
Page 271: ...271 Counter Counts the number of frames that match this ACE ...
Page 281: ...281 Figure 4 11 4 Network Access Server Configuration Page Screenshot ...
Page 315: ...315 ...
Page 328: ...328 ...
Page 335: ...335 ...
Page 346: ...346 Figure 4 14 1 LLDP Configuration Page Screenshot ...
Page 350: ...350 Figure 4 14 2 LLDP MED Configuration Page Screenshot ...
Page 372: ...372 Figure 4 16 1 Loop Protection Configuration Page Screenshot ...