G
Guest
I have a odd problem that I need someone to help shed some light on. It's a
bit technical and I hope in am posing in the right place. So here goes, we
have a 3Mpbs Dual T1 at our office and we are setup as follows,
internet->Cisco2620Router->Cisco PIX 501->Cisco 2950 Switch-> PC's, Servers.
So the issue we are having is this, we have users outside our network that
connect internally thru our Cisco PIX firewall using DES L2TP tunels and we
have been testing speed problems for weeks now. We can connect thru the VPN
and pull data via SMB or FTP from a Windows 2003 server @ 330KBPS however we
cannot get data from ANY windows XP-PRO behind our firewall faster than
130-150KBPS. We have removed the PIX and all switches and connected directly
to the T1 router with the same results. So the problem up to today was why
are the speeds to bad to the PCs when we discovered that if we connected a
Linux or Macintosh to the LAN we received nearly the same speed as the 2003
server which is about 300KBps.
What I have tried to do is use TCP Optimizer on a test workstation with no
results. So our problem in a nutshell is that Linux, Mac OS, & 2003 Server
can transfer data inbound/outbound at full wirespeed of our VPN tunnel which
is almost 2.8Megabits. But when we transfer to or from an XP box running IIS
FTP, ServU FTP, or PCAnywhere we get less then 1/2 the speed of the other
OS's. We have simulated all variables by running FTP and SMB connections to
ALL OS's and the results are the same on 5 different XP-PRO computers. They
totally run slower than any other OS in transfering data on our network. So I
am totally lost as for the past 2 weeks we have tested routers, switches,
firewalls and even cableing to no avail and today we determined it was XP
Pro. All are running SP2 and we even tested SP1 and get the same results. We
can test each workstation to speakeasy.net/speedtest and get 3/3 Megabits
each time. So please someone help me figure out what is going on here. We
know for sure now it's not a network equipment problem but indeed an XP
problem.
Thanks
bit technical and I hope in am posing in the right place. So here goes, we
have a 3Mpbs Dual T1 at our office and we are setup as follows,
internet->Cisco2620Router->Cisco PIX 501->Cisco 2950 Switch-> PC's, Servers.
So the issue we are having is this, we have users outside our network that
connect internally thru our Cisco PIX firewall using DES L2TP tunels and we
have been testing speed problems for weeks now. We can connect thru the VPN
and pull data via SMB or FTP from a Windows 2003 server @ 330KBPS however we
cannot get data from ANY windows XP-PRO behind our firewall faster than
130-150KBPS. We have removed the PIX and all switches and connected directly
to the T1 router with the same results. So the problem up to today was why
are the speeds to bad to the PCs when we discovered that if we connected a
Linux or Macintosh to the LAN we received nearly the same speed as the 2003
server which is about 300KBps.
What I have tried to do is use TCP Optimizer on a test workstation with no
results. So our problem in a nutshell is that Linux, Mac OS, & 2003 Server
can transfer data inbound/outbound at full wirespeed of our VPN tunnel which
is almost 2.8Megabits. But when we transfer to or from an XP box running IIS
FTP, ServU FTP, or PCAnywhere we get less then 1/2 the speed of the other
OS's. We have simulated all variables by running FTP and SMB connections to
ALL OS's and the results are the same on 5 different XP-PRO computers. They
totally run slower than any other OS in transfering data on our network. So I
am totally lost as for the past 2 weeks we have tested routers, switches,
firewalls and even cableing to no avail and today we determined it was XP
Pro. All are running SP2 and we even tested SP1 and get the same results. We
can test each workstation to speakeasy.net/speedtest and get 3/3 Megabits
each time. So please someone help me figure out what is going on here. We
know for sure now it's not a network equipment problem but indeed an XP
problem.
Thanks