DELL S6000-ON User Manual

When you configure the LSA throttle timers, syslog messages appear, indicating the interval times, as 
shown below for the transmit timer (45000ms) and arrival timer (1000ms).

Mar 15 09:46:00: %STKUNIT0-M:CP %OSPF-4-LSA_BACKOFF: OSPF Process 10,Router lsa 

id

2.2.2.2 router-id 2.2.2.2 is backed off to transmit after 45000ms

Mar 15 09:46:06: %STKUNIT0-M:CP %OSPF-4-LSA_BACKOFF: OSPF Process 10,Router lsa 

id

3.3.3.3 rtrid 3.3.3.3 received before 1000ms time

NOTE: The sequence numbers are reset when previously cleared routes that are waiting for the LSA 
throttle timer to expire are re-enabled.

Router Priority and Cost

Router priority and cost is the method the system uses to “rate” the routers.

For example, if not assigned, the system selects the router with the highest priority as the DR. The second 
highest priority is the BDR.
• Priority is a numbered rating 0 to 255. The higher the number, the higher the priority.
• Cost is a numbered rating 1 to 65535. The higher the number, the greater the cost. The cost assigned 

reflects the cost should the router fail. When a router fails and the cost is assessed, a new priority 

number results.

Figure 92. Priority and Cost Examples

642

Open Shortest Path First (OSPFv2 and OSPFv3)