Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 1804

User Guidelines OSPF distributes routing information in Link State Advertisements (LSAs), which are bundled into Link State Update (LS Update) packets. To reduce the likelihood of sending a neighbor more packets than it can buffer, OSPF rate limits the transmission of LS Update packets. By default, OSPF sends up to 30 updates per second on each interface (1/the pacing interval). Use this command to adjust the LS Update transmission rate. timers pacing lsa-group Use the timers pacing lsa-group command to tune how OSPF groups LSAs for periodic refresh. Syntax timers pacing lsa-group seconds no timers pacing lsa-group • seconds-Width of the window in which LSAs are refreshed. The range for the pacing group window is from 10 to 1800 seconds. Default Configuration The default timer pacing is 60 seconds. Command Mode OSPFv2 Global Configuration mode, OSPFv3 Global Configuration mode User Guidelines OSPF refreshes self-originated LSAs approximately once every 30 minutes. When OSPF refreshes LSAs, it considers all self-originated LSAs whose age is from 1800 to 1800 plus the pacing group size. Grouping LSAs for refresh allows OSPF to combine refreshed LSAs into a minimal number of LinkState packets. Minimizing the number of Link-State packets makes LSA distribution more efficient. When OSPF originates a new or changed LSA, it selects a random refresh delay for the LSA. When the refresh delay expires, OSPF refreshes the LSA. By selecting a random refresh delay, OSPF avoids refreshing a large number of LSAs at one time, even if a large number of LSAs are originated at one time. Layer 3 Routing Commands 1804