Network Latency High

Today my client complain one of the server backup performance slow ,last time was no problem and suddenly the issue occur,we implement the backup via network.I try to ping all the server the latency is 1 second but for that problematic server has high latency about 78~150 .May i know what is the cause this performance issue then what should i do ?
Who is Participating?
bcrosby007Connect With a Mentor Commented:
steps to try
1. Switch network cards.
2. Change ports on Switch.
3. Turn off all *extra* services on the server. Then bring them back on one by one.
-Check the server to see if there are any process that are using up server resources and/or network bandwidth on it's nic card.
-Check the switch port and make sure speed/duplex is correct.
Mike RoeCommented:
make sure cables are good and all punch downs are good
Train for your Pen Testing Engineer Certification

Enroll today in this bundle of courses to gain experience in the logistics of pen testing, Linux fundamentals, vulnerability assessments, detecting live systems, and more! This series, valued at $3,000, is free for Premium members, Team Accounts, and Qualified Experts.

bbaoIT ConsultantCommented:
try doing RDP to the problematic server and PING other hosts from the server, including its local servers, the default gateway, the internet gateway (if it is not the default gateway) and some other hosts on the internet, by name and IP numbers.

this will let you know if the the problem is at network layer or DNS related, and if the problem is only related to specific networks.
YaYangTeahAuthor Commented:
If DNS problem how can we resolve ?
bbaoIT ConsultantCommented:
if you are sure it was a DNS issue, then the following approaches can be considered.

1. change to a reliable local DNS server.
2. build your own local DNS server.
3. if possible, use static IP address instead of domain name on the key servers.
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.

All Courses

From novice to tech pro — start learning today.