Find out where packet loss is coming from?

Two sites are involved - one is a cable ISP, the other is T1's

normally packet loss is less than 1% and time of pings is around 130ms between sites

today all of the sudden the packet loss jumped to 15% and pings over 200ms between sites

i've checked from two neutral (outside) locations and the pings/packet loss is normal with both sites (less than 1%).

so the only loss is between these two sites specifically - outbound pings to google, etc. also show less than 1% loss from both sites.

internal communication at each site is fine. I have a secondary router in place in one of the sites and the loss is the same between sites about 15% and over 200ms

any ideas?
AMtekAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

James HIT DirectorCommented:
130ms is slow response. Can you inspect the traffic on the T1? I would suspect the circuit is overutilized. Do you have any QoS is place?
0
StampelCommented:
can you check with traceroute to see where it breaks ?
from windows : tracert <IP>
from linux : traceroute <IP>
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
AMtekAuthor Commented:
from the site with the cable modem, tracert shows 18 hops, it is under 70ms until it hits the last three hops.
hop 16 jumps to 150, hop 17 jumps to 230, final hop 18 sits at 200
hop 16 appears to be in the same city the ISP is located

from the T1 site (bonded T1's = 6Mbps) shows 10 hops, jumps over 100 at hop 5 (the city of the cable modem site), and then up to 200ms at hop 7, also same city as the cable modem site. two timeouts on the tracert at hop 8 and 9

no qos, T1 traffic seems to be ok, I get a normal response from a neutral site.
0
AMtekAuthor Commented:
should say no breaks in the cable modem site with tracert

t1 site shows 2 breaks (10 hops)
0
AMtekAuthor Commented:
was one of the hops - looks like someone finally caught it.
thanks for the help
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Networking

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.