Re: [Ntp] Symmetric mode

[Hal Murray <[e-mail]>]

[e-mail] said:
> That is an untrue statement. Symmetric mode uses EXACTLY the same bandwidth. 

We should be smart enough to figure out why we don't agree on this.  It is 
fact rather than opinion.

How many packets per polling interval do you see?

Maybe we are comparing apples to oranges.  Are we considering the same setups?

Here are my two cases:

First setup:
  In server A,s config
    server B
  In server B.s config
    server A

That gets 4 packets per polling interval, a client/server pair in each 
direction.

Second setup:
  In server A, config
    peer B
  In server B's config
    peer A

That gets 2 packets per polling interval, an active mode in each direction.
There is no reply right after the active mode arrives.


There is an alternate 3rd setup:
  In server A's config
    peer B
  In server B's config
    allow ephemeral setup

That gets 2 packets per polling interval, one active and one passive.
The passive is not a direct reply to the active.

The peer lines need a key or a disable auth and a restrict without nopeer to 
setup the ephemeral association.


Would tcpdumps help?


-- 
These are my opinions.  I hate spam.