HP 5120 EI Series User Manual

196
Ste
p
Command Remarks
2. Set the TTL multiplier.
lldp hold-multiplier value
Optional.
4 by default.
3. Set the LLDPDU transmit
interval.
lldp timer tx-interval interval
Optional.
30 seconds by default.
4. Set the LLDPDU transmit delay.
lldp timer tx-delay delay
Optional.
2 seconds by default.
5. Set the number of LLDPDUs
sent each time fast LLDPDU
transmission is triggered.
lldp fast-count count
Optional.
3 by default.
Setting an encapsulation format for LLDPDUs
LLDPDUs can be encapsulated in the following formats: Ethernet II or SNAP frames.
• With Ethernet II encapsulation configured, an LLDP port sends LLDPDUs in Ethernet II frames and
processes only incoming, Ethernet II encapsulated LLDPDUs.
• With SNAP encapsulation configured, an LLDP port sends LLDPDUs in SNAP frames and processes
only incoming, SNAP encapsulated LLDPDUs.
By default, Ethernet II frames encapsulate LLDPDUs. If the neighbor devices encapsulate LLDPDUs in
SNAP frames, configure the encapsulation format for LLDPDUs as SNAP to guarantee normal
communication with the neighbors.
To set the encapsulation format for LLDPDUs to SNAP:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter Ethernet interface
view or port group view.
• Enter Layer 2 Ethernet interface view:
interface interface-type interface-number
• Enter port group view:
port-group manual port-group-name
Use either command.
3. Set the encapsulation
format for LLDPDUs to
SNAP.
lldp encapsulation snap
Ethernet II encapsulation
format applies by default.
NOTE:
LLDP-CDP (Cisco Discovery Protocol) packets use only SNAP encapsulation.
Configuring CDP compatibility
When the switch is directly connected to a Cisco device that supports only CDP rather than LLDP, you can
enable CDP compatibility to enable the switch to exchange information with the directly-connected
device.
With CDP compatibility enabled on the switch, the switch can use LLDP to receive and recognize the CDP
packets received from the directly-connected device and send CDP packets to the directly-connected
device. The packets that the switch sends to the neighboring CDP device carry the fields in Table 27.

HP 5120 EI Series Specifications

General

Brand	HP
Model	5120 EI Series
Category	Switch
Language	English