HP 6125XLG R2306-HP 6125XLG Blade Switch High Availability Configuration Guide - Page 31

Basic concepts DLDP neighbor states If port A and B are on the same link and port A can receive link-layer packets from port B, port B is a DLDP neighbor of port A. Two ports that can exchange packets are neighbors. Table 6 DLDP neighbor states DLDP timer Confirmed Unconfirmed Description The link to a DLDP neighbor is bidirectional. The state of the link to a newly discovered neighbor is not determined. DLDP port states A DLDP-enabled port is called a "DLDP port." A DLDP port can have multiple neighbors, and its state depends on the DLDP neighbor state. Table 7 DLDP port states State Initial Inactive Bidirectional Unidirectional Description DLDP is enabled on the port, but is disabled globally. DLDP is enabled on the port and globally, and the link is physically down. DLDP is enabled on the port and globally, and at least one neighbor in Confirmed state exists. DLDP is enabled on the port and globally, and no neighbor in Confirmed state exists. In this state, a port does not send or receive packets other than DLDP packets any more. DLDP timers Table 8 DLDP timers DLDP timer Advertisement timer Probe timer Echo timer Entry timer Enhanced timer Description Advertisement packet sending interval (the default is 5 seconds and is configurable). Probe packet sending interval. This timer is set to 1 second. The Echo timer is triggered when a probe is launched for a new neighbor. This timer is set to 10 seconds. When a new neighbor joins, a neighbor entry is created and the corresponding entry timer is triggered if the neighbor is in Confirmed state. When an Advertisement is received, the device updates the corresponding neighbor entry and the Entry timer. The setting of an Entry timer is three times that of the Advertisement timer. The Enhanced timer is triggered, together with the Echo timer, when the Entry timer expires. Enhanced timer is set to 1 second. 26