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17.3.3.6 ip pim hello-holdtime
Command: ip pim hello-holdtime <value>
no ip pim hello-holdtime
Function:
Configure or disable the Holdtime option in the Hello packets,this value is to
describe neighbore holdtime,if the switch hasn’t received the neighbore hello packets
when the holdtime is over, this neighbore is deleted. The “
no ip pim hello-holdtime
”
command cancels configured holdtime value and restores default value.
Parameter: <value>
is the value of holdtime.
Default:
The default value of Holdtime is 3.5*Hello_interval, Hello_interval’s default value
is 30s,so Holdtime’s default value is 105s.
Command Mode:
Interface Configuration Mode
Usage Guide:
If this value is not configured, hellotime’s default value is
3.5*Hello_interval. If the configured holdtime is less than the current hello_interval , this
configuration is denyed. Every time hello_interval is updated, the Hello_holdtime will
update according to the following rules: If hello_holdtime is not configured or
hello_holdtime is configured but less than current hello_interval,hello_holdtime is
modified to 3.5*hello_interval, otherwise the configured value is maintained.
Example:
Configure vlan1’s Hello Holdtime
Switch (Config)# interface vlan1
Switch (Config -if-Vlan1)#ip pim hello-holdtime 10
Switch (Config -if-Vlan1)#
17.3.3.7 ip pim hello-interval
Command: ip pim hello-interval <interval>
no ip pim hello-interval
Function:
Configure the interface’s hello_interval of pim hello packets. The “
no ip pim
hello-interval
” command
restores the default value.
Parameter: <interval>
is the hello_interval of periodically transmitted pim hello packets’,
ranges from 1 to 18724s.
Default:
The default periodically transmitted pim hello packets’ hello_interval is30s.
Command Mode:
Interface Configuration Mode
Usage Guide:
Hello messages make pim switches oriente each other and determine
neighbore relationship. Pim switch annouce the existance of itself by periodically
transmitting hello messages to neighbores. If no hello messages from neighores are
received in the certain time, the neighbore is considered lost. This value can’t be greater
than neighbore overtime.
Example:
Configure vlan’s pim-sm hello interval
Switch (Config)#interface vlan 1