Slow file I/O through Cisco routers

[thebook]

I have a 16-bit COBOL app that uses a lot of File I/O tranfers between Server to Workstation, however, we just went to two subnets but on the same hop and the file transfer is like 10 times slower. We run a pure IP environment with Netware 5.1.

Is this a Novell or a Cico issue? Any ideas would be appreciated.

Thanks you.

 

[TheLad]

Do ping tests from the server (using PING.NLM) to workstations on each subnet, do pings to each subnet give a similar response time? Also, do the results of a TRACERT on a workstation indicate a "flat LAN"?

-----------------------------------------------------
"It's true, its damn true!"
-----------------------------------------------------

 

[thebook]

It was about a 3sec delay between subnets. The tracert was about the same.

Thanks

 

[TheLad]

Do you definately mean 3 seconds or 3 milliseconds? If it is 3 seconds then I suggest you definately have a LAN routing issue.

-----------------------------------------------------
"It's true, its damn true!"
-----------------------------------------------------

 

[thebook]

Sorry!! 3 msec. 3 seconds would be bad for sure. I have tried to use a sniffer but nothing really jumped out at me. The APP that is being used operates with COBOL master files ans when we run a process it is not unheard of to have approx. 300 files open at any given time. A lot of the processing is being done by the Workstation as well but there is definately a lot of file transefer to and from. Still no ideas.

 

[Psychoid]

I'll assume that you're using at least ethernet on the switches & NICs.

Are the interfaces on the router fast ethernet also, or are they 10BaseT?

If they're only 10 megabit, that would explain your tenfold reduction in speed

------------
Bill
Consultant / Network Engineer
CNE, CCNA

 

[thebook]

It could be because on one of the routers in question it is a 10BaseT interface. I am pretty sure that everything else is 100 though. I will have to check because it is happening at another site as well and as far as I know they are 100 across the board.

We will see.