Understood that T1 is not MPLS... The Reno site has a bonded T1 into the cloud.
The Phoenix site has a 10mb ethernet handoff going directly to a fiber ring...
This is about 1000 miles total one way distance.
Because the traffic gets into the cloud quickly but on the other end it jumps
from 23 to 35/40ms on the last connection. Is this the T1 handoff, or something
else?
Do you have any similar connections? Do they perform about at that rate??
Thanks again.
Target Name: rtr-rno
IP: 64.16.106.1
Date/Time: 5/5/2011 12:30:02 PM
1 0 ms 0 ms phxcr-1c.lrlaw.com [xxx.xx.100.1]
2 1 ms 1 ms [xxx.xx.7.177]
3 26 ms 23 ms [xxx.xx.149.9]
4 32 ms 35 ms rtr-rno.lrlaw.com [xxx.xx.106.1]
Ping statistics for rtr-rno
Packets: Sent = 2, Received = 2, Lost = 0 (0.0%)
Round Trip Times: Minimum = 32ms, Maximum = 35ms, Average = 33ms
________________________________
From: Michael B. Smith [mailto:[email protected]]
Sent: Thursday, May 05, 2011 11:27 AM
To: NT System Admin Issues
Subject: RE: MPLS Latency
T1 is not MPLS. And I presume the T1's are bonded?
Use tracert and pathping to see where your latency is being introduced. If it's
with your carrier, have a chat with them at that point.
However, in my personal opinion, your performance is pretty darn good.
Regards,
Michael B. Smith
Consultant and Exchange MVP
http://TheEssentialExchange.com
From: Stringham, Steven [mailto:[email protected]]
Sent: Thursday, May 05, 2011 2:14 PM
To: NT System Admin Issues
Subject: OT: MPLS Latency
We have a few sites on our MPLS network with Twtelecom. Some of the have
pretty good latency (<10ms for Phoenix to Las Vegas - all fiber to the
building) to not so good latency (40ms Phoenix ->Reno Nevada - Dual T1s in
Reno). I am seeing similar latency (38ms) from Phoenix to San Jose (another
dual T1 on the San Jose side, but a fiber connection to my Phoenix side. My
Phoenix to Albuquerue (all fiber again) is about 15ms. This is about the same
distance as to the San Jose - but over double the latency.
Strict math (best case - line of site 2/3 speed of light calculations) say that
my Reno line should be about 10ms. So, I double it for equipment and I still
get 20ms. Less than half.
My question is what do you folks see out there? Do you see a higher latency on
a T1 line than a fiber to the building line by that much of a difference? Or,
is there a routing issue that is creating delays?
Any feed back you can give would be helpful.
Thanks
Steven Stringham
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