HP FlexNetwork NJ5000 User Manual page 194

Figure 178 The global setup tab
Set the global LLDP setup as described in
3.
Click Apply.
4.
A progress dialog box appears.
Click Close on the progress dialog box when the progress dialog box prompts that the
5.
configuration succeeds.
Table 76 Configuration items
Item
LLDP Enable
CDP Compatibility
Fast LLDPDU
Count
TTL Multiplier
Table
Description
Select from the list to enable or disable global LLDP.
Select from the list to enable or disable CDP compatibility of LLDP.
When you configure CDP compatibility, follow these guidelines:
•
To enable LLDP to be compatible with CDP on a port, you must set the
CDP operating mode on the port to TxRx and enable CDP compatibility on
the Global Setup tab.
•
Because the maximum TTL allowed by CDP is 255 seconds, you must
make sure the product of the TTL multiplier and the LLDP frame
transmission interval is less than 255 seconds for CDP-compatible LLDP to
work correctly with Cisco IP phones.
Set the number of LLDP frames sent each time fast LLDP frame transmission is
triggered.
Set the TTL multiplier.
The TTL TLV carried in an LLDPDU determines how long the device information
carried in the LLDPDU can be saved on a recipient device. You can configure
the TTL of locally sent LLDPDUs to determine how long information about the
local device can be saved on a neighbor device by setting the TTL multiplier.
The TTL is expressed as TTL multiplier × LLDP frame transmission interval.
When you configure the TTL multiplier, follow these guidelines:
•
If the product of the TTL multiplier and the LLDP frame transmission
interval is greater than 65535, the TTL carried in transmitted LLDP frames
takes 65535 seconds.
•
Because the maximum TTL allowed by CDP is 255 seconds, you must
182
76.