0
votes
2answers
79 views

packet loss between two specific VMs

I am experiencing some high-percentage packet loss (more than 70%) between two specific VMs in a local network, in a remote cluster (I have no physical access to it). One machine is used as a hadoop ...
0
votes
2answers
67 views

Occasional Delay on Website Resources: Packet Loss Due to Bandwidth Cap?

My website loads more slowly than I think it should, due to a few of the assets taking an absurdly long time to download from the server. I've been trying to track down the cause of this. I'm about ...
0
votes
0answers
68 views

Cannot connect to Windows Server 2008 R2 via http, https works

I've been having a problem with my WS2008R2 server ever since I started IIS7 for the first time. I've been managing to work around it so far, because https access works normally. http, however, has ...
3
votes
1answer
573 views

Analysing incoming TCP packet discards on GNU/Linux

I use Ubntu 12.04 Server as a gateway/router. The server has two NetXtreme BCM5721 Gigabit Ethernet PCI Express cards for LAN and WAN interfaces. Opennms monitoring software shows incoming packet ...
0
votes
1answer
60 views

Network packet loss and major connection issues

We've just swapped isp and have set our network up exactly as it was. We are having really bad connection issues on our network to outside sites. Running Ping Tester we are getting about 13% loss when ...
2
votes
1answer
226 views

Nagios, Cisco switches, lost packets

I use Nagios to monitor about 30 Cisco 2960 switches (check_snmp_load, check_snmp_int). I only check load and one or two backbone interfaces of every switch. I get a lot of false positives caused by ...
2
votes
1answer
305 views

PIX Firewall Causing Packet Loss

I am currently in the process of modifying how internet reaches my front end servers and I am having a strange issue with one of the existing stacks. There is one physical firewall which is above the ...
3
votes
1answer
1k views

huge packet loss and checksum errors

Our 2008 server began to work very slowly within 2 weeks. Our web sites (iis 7.5) are loading very slowly and sometimes its freezing. We began testing with wireshark and saw that our packets are ...
0
votes
1answer
373 views

network latency, TCP and UDP packets

Hello recently my network has started to cause me lots of problems. I have a cable modem, connected to a tp-link router (with some port forwarding). Everything was working fine then i started to get ...
0
votes
1answer
2k views

How do I interpret packet loss identified by WinMTR

I've been asked to look into a packet loss problem a previous consultant identified at a client. They have two ADSLMax connections, one for data and the other dedicated to VoIP. The packet loss is ...
5
votes
2answers
3k views

How to interpret traceroute / output of MTR?

I have been running MTR to/from one of my servers and noticed something that looks odd to me. Because I am not really into this I will give you three outputs: This is from the server to my home ...
1
vote
1answer
3k views

What causes the issue (possibly packet loss) in this scenario

I'm trying to diagnose a network related problem - please understand these points before suggesting an answer (apologies if more information is required, I will add anything people ask). We have a ...
0
votes
2answers
308 views

Packet loss with all adapters on one PC only on the LAN

I have a Windows 7 64-bit machine that is losing up to 20% of IP packets on both adapters - wireless & LAN. Browser traffic appears to be affected the most, but it is happening to all protocols. ...
0
votes
3answers
692 views

Weird Cisco switch problem - minutes with ultimate packetloss

because of dead port were we pushed to replace our Linksys/Cisco SR2016 in datacenter. So we looked to the stock of our supplier and the only interesting switch they had was the Cisco SLM2024 Smart ...
0
votes
1answer
251 views

FreeBSD machine not responding to first few packets of a stream

I have two machines running as reverse proxy caches/load balancers in front of a site I admin. Recently at peak times I've been seeing a problem where the first few packets from any stream of packets ...
10
votes
4answers
933 views

How common are dropped packets in communications within a data center?

Let's say I have 2 machines in the same data center but not necessarily in the same rack. How common would dropped packets be when sent using UDP between these two machines? I'm asking under the ...