3Com Baseline 2928 PWR Plus User Manual page 264

Figure 1-7 The Global Setup tab
Table 1-9 describes the global LLDP setup configuration items.
Table 1-9 Global LLDP setup configuration items
Item
LLDP Enable
CDP Compatibility
Fast LLDPDU Count
Select from the dropdown list to enable or disable global LLDP.
Select from the dropdown list to enable or disable CDP compatibility of
LLDP.
To enable LLDP to be compatible with CDP on a port, you must set the
CDP work mode (or the CDP operating mode) on the port to TxRx in
addition to enabling CDP compatibility on the Global Setup tab.
As the maximum TTL allowed by CDP is 255 seconds, you must ensure
that the product of the TTL multiplier and the LLDPDU transmit interval is
less than 255 seconds for CDP-compatible LLDP to work properly with
Cisco IP phones.
Set the number of LLDPDUs sent each time fast LLDPDU transmission is
triggered.
1-13
Description