hi every body!
Let say we have sw1 using extended system, priority 4096. It is currently a root.
Now we introduce the another switch sw2 with command " spanning-tree vlan 2 root primary.
Will the new switch sw2 will set its priority as 4096(current root)-4096=0?
2)According to my book,the command" spanning-tree vlan 2 root diameter 3" will adjust the 1) hello timer 2)forward delay 3)max-age.
But i find the in 802.1d specification that command enters the two vaiable, hello time and diameter in following equations to determine forward delay and max age;
Max-age= 4*hello= 2*diameter-2
If hello timer is not specified, default helo time=2 sec is assumed.
The question is according to book the command" spanning-tree vlan 2 root diameter 3" sets hello timer, forward delay, max-age.
But according to rfc for 802.1q, it sets only two timers foward delay and max age if given hello time and diameter.
Which one is correct?
thanks a lot!