Enlinkd The enhanced link daemon collects topology information via SNMP to determine neighboring nodes. The daemon essentially asks each device the following question: "What is the network topology from your point of view?" The enlinkd discovery process attempts to discover bridge domain links with the data coming from all collected bridge forwarding tables. The enlinkd updaters correlate all collected topology data to generate a global topology layout of your network. Table 1. Enlinkd configuration file overview File Description Reload Event Restart Required enlinkd-configuration.xml Configure generic behavior of enlinkd. yes no Table 2. Enlinkd log file overview File Description enlinkd.log Logs relating to enlinkd server events. Enlinkd configuration If multiple protocols are enabled, links will be discovered for each enabled discovery protocol. The topology web UI visualizes links for each discovery protocol. For example, if you start CDP and LLDP discovery, the web UI visualizes a CDP link and an LLDP link. Restart Horizon or just the enlinkd daemon to apply configuration changes. Table 3. enlinkd-configuration parameters Attribute Description Default Integer threads Number of parallel threads for enlinkd collector, updater, and discovery tasks. 5 initial_sleep_time Time in milliseconds to wait to start collectors after Horizon is started. 60000 rescan_interval Interval in milliseconds for collectors. 86400000 topology_interval Interval in milliseconds for updater. 30000 bridge_topology_interval Interval in milliseconds for discovery. 300000 max_bft The maximum number of bridge forwarding tables (BFTs) stored in memory for discovery. 100 discovery-bridge-threads The number of threads used for discovery. 1 Boolean use-cdp-discovery Enable or disable discovery based on CDP information. true use-bridge-discovery Enable or disable discovery based on the bridge information. true use-lldp-discovery Enable or disable discovery based on LLDP information. true use-ospf-discovery Enable or disable discovery based on OSPF information. true use-isis-discovery Enable or disable discovery based on IS-IS information. true The discovery for bridge first start is scheduled at initial_sleep_time + bridge_topology_interval. The updaters' first start is scheduled at 0L. Discovery Eventd