Configuring Spf Parameters - H3C S3610-28P Operation Manual

Operation Manual – IPv4 Routing
H3C S3610&S5510 Series Ethernet Switches
Enter interface view
Add the interface to a mesh
group
Note:
Note the following when enabling LSP fragment extension:
After LSP fragment extension is enabled in an IS-IS process, the MTUs of all the
interfaces with this IS-IS process enabled must not be less than 512; otherwise,
LSP fragment extension will not take effect.
At least one virtual system needs to be configured for the router to generate
extended LSP fragments.

4.5.6 Configuring SPF Parameters

When the LSDB changes in an IS-IS network, a routing calculation starts. If the
changes happen frequently, it will take a lot of system resources. You can set the
interval for SPF calculation for efficiency consideration.
The SPF calculation may occupy the CPU for a long time when the routing entries are
too many. You can split the SPF calculation time into multiple durations with a default
interval of 10s in between.
Follow these steps to configure the SPF parameters:
To do...
Enter system view
Enter IS-IS view
To do...
interface interface-type
interface-number
isis mesh-group
[ mesh-group-number |
mesh-blocked ]
Use the command...
system-view
isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
Use the command...
4-30
Chapter 4 IS-IS Configuration
Remarks
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Optional
Not added by
default
If the
mesh-blocked
keyword is included,
the interface is
blocked from
flooding LSPs. It
can send an LSP
only after receiving
a request.
Remarks
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––