单选题What is the purpose of the RSVP hello interval?（）A It is the size of the RSVP hello packetB It is how long it maintains RSVP neighborsC It is the length of time between RSVP hello packetsD It is how long the router waits before declaring a router to be
题目
单选题
What is the purpose of the RSVP hello interval?（）
A
It is the size of the RSVP hello packet
B
It is how long it maintains RSVP neighbors
C
It is the length of time between RSVP hello packets
D
It is how long the router waits before declaring a router to be down