H3C Technologies H3C S3600 Series Switches - Manual (Page 1157)

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To do… Use the command… Remarks
Set the number of LLDP frames
sent each time fast LLDPDU
transmission is triggered.
lldp fast-count count
Optional
3 by default
Both the LLDPDU transmit interval and delay must be less than the TTL to ensure that the LLDP
neighbors can receive LLDP frames to update information about the device you are configuring before
it is aged out.
Setting an Encapsulation Format for LLDPDUs
LLDPDUs can be encapsulated in Ethernet II or SNAP frames.
z With Ethernet II encapsulation configured, an LLDP port sends LLDPDUs in Ethernet II frames and
processes an incoming LLDP frame only when it is Ethernet II encapsulated.
z With SNAP encapsulation configured, an LLDP port sends LLDPDUs in SNAP frames and
processes an incoming LLDP frame only when it is SNAP encapsulated.
By default, LLDPDUs are encapsulated in Ethernet II frames. If the neighbor devices encapsulate
LLDPDUs in SNAP frames, configure the encapsulation format for LLDPDUs as SNAP to guarantee
normal communication with the neighbors.
Follow these steps to set the encapsulation format for LLDPDUs to SNAP:
To do… Use the command… Remarks
Enter system view system-view —
Enter Ethernet interface view
interface interface-type
interface-number
Required
Set the encapsulation format for
LLDPDUs to SNAP
lldp encapsulation snap
Required
Ethernet II
encapsulation format
applies by default.
To restore the
default, use the undo
lldp encapsulation
command.
LLDP-CDP (CDP is short for the Cisco Discovery Protocol) packets use only SNAP encapsulation.
Configuring CDP Compatibility