[asterisk-users] Why high latency on internal lan?

[sean darcy]

I have a 100MB internal lan. aastra's are wired. asterisk box is wired 
next to the switch. But look:


sip show peers
........
142/142                    10.10.10.42      D       A  5060     OK (137 ms)
144/144                    10.10.10.44      D       A  5060     OK (136 ms)
145/145                    10.10.10.45      D       A  5060     OK (168 ms)
150/150                    10.10.10.50      D       A  5060     OK (136 ms)
152/152                    10.10.10.52      D       A  5060     OK (133 ms)
153/153                    10.10.10.53      D       A  5060     OK (135 ms)

ping from the asterisk box to any of the internal phones is < 1ms.

  My traceroute  [v0.75]
PBX 
                                  Thu Oct 21 13:58:36 2010

Host 10.10.10.42 
Loss%   Snt   Last   Avg  Best  Wrst StDev
0.0%    65    0.6   0.6   0.5   1.3   0.2


And latencies to outside sip providers are low:
jnctn/...      66.227.100.20               5060     OK (7 ms)
teliax/..    8.14.120.23          N      5060     OK (7 ms)

What gives? Isn't sip show peers measuring latency? Why so different 
from ping? And, more importantly, do I have a problem?

sean