Concept Guide

Item Description
Level-1/Level-2
LSPs PSNPs (sent/
rcvd)
Displays the number of PSNP LPSs sent and received.
Level-1/Level-2 DR
Elections
Displays the number of times designated router elections ran.
Level-1/Level-2 SPF
Calculations
Displays the number of shortest path rst calculations.
LSP checksum
errors received
Displays the number of checksum errors LSPs received.
LSP authentication
failures
Displays the number of LSP authentication failures.
Example
Dell#sho is traffic
IS-IS: Level-1 Hellos (sent/rcvd) : 0/721
IS-IS: Level-2 Hellos (sent/rcvd) : 900/943
IS-IS: PTP Hellos (sent/rcvd) : 0/0
IS-IS: Level-1 LSPs sourced (new/refresh) : 0/0
IS-IS: Level-2 LSPs sourced (new/refresh) : 1/3
IS-IS: Level-1 LSPs flooded (sent/rcvd) : 0/0
IS-IS: Level-2 LSPs flooded (sent/rcvd) : 5934/5217
IS-IS: Level-1 LSPs CSNPs (sent/rcvd) : 0/0
IS-IS: Level-2 LSPs CSNPs (sent/rcvd) : 472/238
IS-IS: Level-1 LSPs PSNPs (sent/rcvd) : 0/0
IS-IS: Level-2 LSPs PSNPs (sent/rcvd) : 10/337
IS-IS: Level-1 DR Elections : 4
IS-IS: Level-2 DR Elections : 4
IS-IS: Level-1 SPF Calculations : 0
IS-IS: Level-2 SPF Calculations : 389
IS-IS: LSP checksum errors received : 0
IS-IS: LSP authentication failures : 0
Dell#
spf-interval
Specify the minimum interval between shortest path rst (SPF) calculations.
Syntax
spf-interval [level-l | level-2] interval seconds [initial_wait_interval
seconds [second_wait_interval seconds]]
To restore default values, use the no spf-interval [level-l | level-2] interval seconds
[initial_wait_interval seconds [second_wait_interval seconds]] command.
Parameters
level-l (OPTIONAL) Enter the keyword level-1 to apply the conguration to Level-1 SPF
calculations.
level-2 (OPTIONAL) Enter the keyword level-2 to apply the conguration to Level-2 SPF
calculations.
interval seconds Enter the maximum number of seconds between SPF calculations. The range is from 0 to
120 seconds. The default is 10 seconds.
initial_wait_interval
seconds
(OPTIONAL) Enter the initial wait time, in seconds, before running the rst SPF
calculations. The range is from 0 to 120 seconds. The default is 5 seconds.
Intermediate System to Intermediate System (IS-IS) 813