Re: TCP Window Scaling issue

2014-07-24 Thread Zach Hill
I don't have root access to that server but I should be able to get it then get some tcpdumps. On Thu, Jul 24, 2014 at 3:18 PM, Matthew Petach wrote: > > > > On Thu, Jul 24, 2014 at 12:13 PM, Zach Hill wrote: > >> All are from SPAN ports at each end. So for

Re: TCP Window Scaling issue

2014-07-24 Thread Zach Hill
, Jul 24, 2014 at 3:08 PM, wrote: > On Thu, 24 Jul 2014 14:33:56 -0400, Zach Hill said: > > > First is the SYN from Server A to Server B > http://i.imgur.com/E5cu4ev.png > > Was this captured with tcpdump on Server A on its way out, or on Server B > on its way in, or at some

Re: TCP Window Scaling issue

2014-07-24 Thread Zach Hill
//i.imgur.com/UyL3V6L.png Now they are both communicating a window size. Speed is still slow at 400-450KBps On Thu, Jul 24, 2014 at 1:23 PM, Matthew Petach wrote: > > > > On Thu, Jul 24, 2014 at 9:51 AM, Zach Hill wrote: > >> Also just to reiterate I would lean more heavil

Re: TCP Window Scaling issue

2014-07-24 Thread Zach Hill
n Thu, Jul 24, 2014 at 12:47 PM, Zach Hill wrote: > Hi Machael, > > Let me setup another packet capture at each side to see if the initial > packets are being modified at all. > > Thanks, > > > On Thu, Jul 24, 2014 at 12:39 PM, Michael Brown > wrote: > >> On

Re: TCP Window Scaling issue

2014-07-24 Thread Zach Hill
Hi Machael, Let me setup another packet capture at each side to see if the initial packets are being modified at all. Thanks, On Thu, Jul 24, 2014 at 12:39 PM, Michael Brown wrote: > On 14-07-24 12:30 PM, Zach Hill wrote: > > Hi Tony. No firewall in the way. > > > > Phys

Re: TCP Window Scaling issue

2014-07-24 Thread Zach Hill
Hi Tony. No firewall in the way. Physical flow is as below. Server A -> Nexus 7k -> 3845 router -> Sprint MPLS -> 3845 router -> Cisco 3750x stack -> Server B On Thu, Jul 24, 2014 at 12:25 PM, Tony Finch wrote: > Zach Hill wrote: > > > What's interesting

TCP Window Scaling issue

2014-07-24 Thread Zach Hill
Hello, I know this isn't precisely on topic but I'm having an issue that I could use some assistance with. I'm currently seeing a very interesting issue for a single server. File transfers from Server A to Server B are relatively slow and not using up much of the circuit. Upon further inspectio