asterisk users - Mar 2007 - Correct latency values in "sip show peers"

I was wondering if anyone knows how accurate the values are when you do a
"sip show peers" from the CLI.

My configuration is:

Asterisk box (192.168.1.102) -> gigabit switch <- PC running x-lite 
(192.168.1.100)

the CLI reports 101 ms delay
however, ping is showing <1ms delay
Where is the extra 100ms coming from? The softphone response?

Here is a dump of some data:

CLI> sip show peers
Name/username              Host            Dyn Nat ACL Port     Status
2006/2006                  192.168.1.110    D          5060     OK (10 ms)
2005/2005                  192.168.1.110    D          5060     OK (10 ms)
2004/2004                  192.168.1.100    D          29786    OK (101 ms)
2003/2003                  192.168.1.106    D   N      12700    OK (219 ms)
2001                       (Unspecified)    D   N      0        UNKNOWN
5 sip peers [Monitored: 4 online, 1 offline Unmonitored: 1 online, 0 
offline]

# traceroute 192.168.1.100
traceroute to 192.168.1.100 (192.168.1.100), 30 hops max, 40 byte packets
 1  rolan6 (192.168.1.100)  0.069 ms   0.069 ms   0.074 ms

# ping 192.168.1.100
PING 192.168.1.100 (192.168.1.100) 56(84) bytes of data.
64 bytes from 192.168.1.100: icmp_seq=1 ttl=128 time=0.086 ms
64 bytes from 192.168.1.100: icmp_seq=2 ttl=128 time=0.111 ms
64 bytes from 192.168.1.100: icmp_seq=3 ttl=128 time=0.246 ms
64 bytes from 192.168.1.100: icmp_seq=4 ttl=128 time=0.319 ms
64 bytes from 192.168.1.100: icmp_seq=5 ttl=128 time=0.106 ms
64 bytes from 192.168.1.100: icmp_seq=6 ttl=128 time=0.215 ms

--- 192.168.1.100 ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 4999ms
rtt min/avg/max/mdev = 0.086/0.180/0.319/0.086 ms

Rolz wrote:
> I was wondering if anyone knows how accurate the values are when you do a
> "sip show peers" from the CLI.
> 
> My configuration is:
> 
> Asterisk box (192.168.1.102) -> gigabit switch <- PC running x-lite 
> (192.168.1.100)
> 
> the CLI reports 101 ms delay
> however, ping is showing <1ms delay
> Where is the extra 100ms coming from? The softphone response?
I'm not sure, but I think that ping isn't OSI ISO Layer 7, while 
softphone is. So, this 100 ms can come from there.


-- 
Tomislav Parcina
firstname.lastname@email.t-com.hr