timer lsp-generation
Use timer lsp-generation to set the LSP generation timer parameters.
Use undo timer lsp-generation to restore the default.
Syntax
timer lsp-generation maximum-interval [ minimum-interval [ incremental-interval ] ]
undo timer lsp-generation
Default
The maximum interval is 2 seconds.
The minimum interval is 10 milliseconds.
The base number for the incremental interval is 10 milliseconds.
Views
SPBM view
Predefined user roles
network-admin
Parameters
maximum-interval: Specifies the maximum LSP generation interval in the range of 1 to 120 seconds.
minimum-interval: Specifies the minimum LSP generation interval in the range of 10 to 60000 milliseconds. This setting must be smaller than the maximum interval.
incremental-interval: Specifies the base number for the incremental interval. The value range is 10 to 60000 milliseconds. This setting must be smaller than the maximum interval.
Usage guidelines
The LSP generation timer sets the delay for ISIS-SPB to generate a new version of an LSP in response to an LSP change. For example, an update occurs because of a change in adjacency, interface metric value, system ID, or area address.
The LSP generation timer is an exponential generation timer. With this timer, ISIS-SPB quickly responds to the first events for an LSP and then slows down to protect the CPU from frequent LSP generation.
When the network is stable, the LSP generation timer is set to the minimum interval for each LSP generation. When the network is unstable, the LSP generation timer increments by incremental-interval×2n-2 (n is the number of generation times) for each LSP generation until the maximum interval is reached. If an event triggers LSP generation after the maximum interval is reached, the LSP generation timer re-initiates with the minimum interval.
The network is considered unstable if the interval between consecutive LSP generation events is smaller than two times the maximum interval.
Examples
# Set the maximum LSP generation interval, the minimum LSP generation interval, and the base number for the incremental interval to 10 seconds, 100 milliseconds, 200 milliseconds, respectively.
<Sysname> system-view [Sysname] spbm [Sysname-spbm] timer lsp-generation 10 100 200