Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 533

• If no topology change occurs, an SPF calculation is performed and the hold timer is reset to its configured value. Set the start, hold, and wait timers according to the stability of the OSPF network topology. Enter the values in milliseconds (ms). If you do not specify a start-time, hold-time, or max-wait value, the default values are used. OSPFv2 and OSPFv3 instances support SPF throttling. By default, SPF timers are disabled in an OSPF instance. Enter the no version of this command to remove the configured SPF timers and disable SPF throttling. 1 Configure an OSPF instance from CONFIGURATION mode, from 1 to 65535. router {ospf | ospfv3} instance-number 2 Set OSPF throttling timers in OSPF INSTANCE mode. timers spf [start-time [hold-time [max-wait]]] • start-time - Configure the initial delay before performing an SPF calculation after a topology change, from 1 to 600000 milliseconds; default 1000. • hold-time - Configure the additional delay before performing an SPF calculation when a new topology change occurs, from 1 to 600000 milliseconds; default 10000. • max-wait - Configure the maximum amount of hold time that can delay an SPF calculation, from 1 to 600000 milliseconds; default 10000. Enable SPF throttling (OSPFv2) OS10(config)# router ospf 100 OS10(config-router-ospf-100)# timers spf 1200 2300 3400 Enable SPF throttling (OSPFv3) OS10(config)# router ospfv3 10 OS10(config-router-ospf-10)# timers spf 2000 3000 4000 View OSPFv2 SPF throttling OS10(config-router-ospf-100)# do show ip ospf Routing Process ospf 100 with ID 12.1.1.1 Supports only single TOS (TOS0) routes It is Flooding according to RFC 2328 SPF schedule delay 1200 msecs, Hold time between two SPFs 2300 msecs Convergence Level 0 Min LSA origination 0 msec, Min LSA arrival 1000 msec Min LSA hold time 5000 msec, Max LSA wait time 5000 msec Number of area in this router is 1, normal 1 stub 0 nssa 0 Area (0.0.0.1) Number of interface in this area is 1 SPF algorithm executed 1 times View OSPFv3 SPF throttling OS10(config-router-ospfv3-100)# timers spf 1345 2324 9234 OS10(config-router-ospfv3-100)# do show ipv6 ospf Routing Process ospfv3 100 with ID 129.240.244.107 SPF schedule delay 1345 msecs, Hold time between two SPFs 2324 msecs Min LSA origination 5000 msec, Min LSA arrival 1000 msec Min LSA hold time 0 msec, Max LSA wait time 0 msec Number of area in this router is 1, normal 1 stub 0 nssa Area (0.0.0.1) Number of interface in this area is 1 SPF algorithm executed 2 times Layer 3 533