Bgp Configuration Commands - 3Com 3031 Command Reference Manual

626 C 6: R
HAPTER OUTING
timer spf
BGP Configuration
Commands
P
ROTOCOL
By this mechanism, synchronization of the LSPs within the entire area can be
maintained.
For the related command, see timer lsp-max-age.
Example
Set the LSP refresh interval of the current system to 1500 seconds.
[3Com-isis] timer lsp-refresh 1500
Syntax
timer spf seconds [ level-1 | level-2 ]
undo timer spf [ level-1 | level-2 ]
View
IS-IS view
Parameter
seconds: Specifies the SPF calculation interval, ranging from 1 to 120 and
measured in seconds. The default value is 5 seconds.
level-1: Sets Level-1 SPF calculation interval only.
level-2: Sets Level-2 SPF calculation interval only.
If the level is not specified, it defaults to SPF interval of Level-1.
Description
Using the timer spf command, you can configure the interval for the SPF
calculation.Using the undo timer spf command, you can restore the default
setting.
In IS-IS protocol, when the LSDB of the corresponding level is changed, SPF
calculation is required. However, if the SPF calculation is performed too frequently,
the system efficiency will be lowered and a great number of resources on the
network will be occupied. SPF calculation interval can improve its calculation
efficiency to some degree. This setting can be made according to actual
conditions.
Example
Set the SPF calculation interval of the router to 3 seconds.
[3Com-isis] timer spf 3
For the commands defining routing policies in BGP, refer to the "IP Routing Policy Configuration
Commands" of the next chapter.
For the configuration examples and parameter explanation of VPNv4 and VPN
instance in BGP, refer to the "Multicast" module and "MPLS" module of this
manual.