3com 2928 User Guide

Page of 505
 
1-13 
Figure 1-7 
The Global Setup tab 
 
 
 describes the global LLDP setup configuration items. 
Table 1-9 
Global LLDP setup configuration items 
Item 
Description 
LLDP Enable 
Select from the dropdown list to enable or disable global LLDP.  
CDP Compatibility 
Select from the dropdown list to enable or disable CDP compatibility of 
LLDP.  
 
z
 
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. 
z
 
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. 
Fast LLDPDU Count  Set the number of LLDPDUs sent each time fast LLDPDU transmission is 
triggered.