Setting The Lsdb Overload Bit; Enabling Outputting Isis-Spb Adjacency Changes To The Configuration Terminal - HP 5920 series Configuration Manual

time is reached. If an event triggers SPF calculation after the maximum wait time is reached, the SPF
calculation timer re-initiates with the minimum wait time.
NOTE:
The network is considered unstable if the interval between consecutive SPF calculations is smaller than two
times the maximum wait time.
To tune the SPF calculation timer:
Step
1. Enter system view.
2. Enter SPBM view.
3. Set the SPF calculation
exponential backoff
timers.

Setting the LSDB overload bit

ISIS-SPB sets the overload bit in LSPs to notify its neighbors that it is experiencing an LSDB error condition
and cannot forward traffic correctly. During path calculation, ISIS-SPB does not choose a path as the
shortest path if the path includes the device that has the overload bit set.
You can set the LSDB overload bit when the device cannot record complete topology data in the LSDB for
memory insufficiency or any other problems.
To set the LSDB overload bit:
Step
1. Enter system view.
2. Enter SPBM view.
3. Set the LSDB overload
bit.
Enabling outputting ISIS-SPB adjacency changes to the
configuration terminal
Step
1. Enter system view.
2. Enter SPBM view.
Command
system-view
spbm
timer spf maximum-interval
[ minimum-interval
[ incremental-interval ] ]
Command
system-view
spbm
set-overload [ on-startup [ [ start-from-nbr
system-id [ timeout1 [ nbr-timeout ] ] ] |
timeout2 ]
Command
system-view
spbm
28
Remarks
N/A
N/A
Default values for the SPF calculation timer
parameters:
•
maximum-interval—5 seconds.
•
minimum-interval—10 milliseconds.
•
incremental-interval—10 milliseconds.
The minimum interval and the incremental
interval must be shorter than the maximum
interval.
Remarks
N/A
N/A
By default, ISIS-SPB does not set the
LSDB overload bit.
Remarks
N/A
N/A