[ntp:questions] Trouble creating symmetric connection

Ronan Flood usenet at umbral.org.uk
Wed Mar 7 17:15:00 UTC 2007


Henning Makholm <henning at makholm.net> wrote:

> I have trouble getting two ntp servers to peer with each other.

[snip]

>   ntpdc -c 'addpeer B.B.B.B' A.A.A.A
> 
> and wait a few minutes for packets to be exchanged; then
> 
>   ntpdc -c peers A.A.A.A
>   ntpdc -c peers B.B.B.B
> 
> After this A.A.A.A does list B.B.B.B as an association in
> 'symmetric-active' mode, and it appears to get nontrivial time
> variables over this association, som B.B.B.B must be answering.
> 
> However, I had expected that B.B.B.B would list A.A.A.A as an
> association in 'symmetric-passive' mode, but it doesn't. Shouldn't it?

Only if you have authentication turned off, which is inadvisable.
Better to make both symmetric-active:

  ntpdc -c 'addpeer B.B.B.B' A.A.A.A
  ntpdc -c 'addpeer A.A.A.A' B.B.B.B

[more snip]

-- 
Ronan Flood <usenet at umbral.org.uk>




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