Integrated IS-IS Configuration Commands 481isis timer csnp Syntaxisis timer csnp seconds [ level-1 | level-2 ]undo isis timer csnp [ level-1 | level-2 ]ViewInterface viewParameterseconds: Specifies the CSNP packet interval on the broadcast network, rangingfrom 1 to 65535 and measured in seconds. By default, the value is 10 seconds.level-1: Specifies the Level-1 CSNP packet interval.level-2: Specifies the Level-2 CSNP packet interval.DescriptionUse the isis timer csnp command to configure the interval of sending CSNPpackets on the broadcast network.Use the undo isis timer csnp command to restore the default value, that is, 10seconds.Only DIS can periodically send CSNP packets, therefore, this command is valid onlyfor the router that is selected as the DIS. Furthermore, DIS is divided into level-1and level-2, and their intervals of sending CSNP packets must be set respectively.Example# Set the CSNP packet of Level-2 to be transmitted every 15 seconds on theinterface Vlan-interface 10.[SW8800] interface Vlan-interface 10[3Com-Vlan-interface10] isis timer csnp 15 level-2isis timer hello Syntaxisis timer hello seconds [ level-1 | level-2 ]undo isis timer hello [ level-1 | level-2 ]ViewInterface viewParameterseconds: Specifies the Hello interval, ranging from 3 to 255 and measured inseconds. The default value is 10 seconds.level-1: Specifies the Level-1 Hello interval.level-2: Specifies the Level-2 Hello interval.If no level is not specified, the Hello interval is set to Level-1-2, that is, both Level-1and Level-2 take effect.