I think you are hitting a performance wall in the 2514. You can't really expect much more than 2 x T1 performance, and then you'll hit a wall. The 2500 series is only a 68040, (old ones are 030's) which "manually" shuffles packets, and can't handle sustained full ether bandwidth. If you look closely with a sniffer, you'd see that its dropping packets. Your FTP slows down because the TCP window is full. --Dean Around 07:46 PM 1/10/2000 -0800, rumor has it that Mr. James W. Laferriere said:

Hello All , I've just been doing a few tests on some 2514 routers I had laying around . I setup the two ether interfaces & on each like the diagram below

+--------+ +--------+ | 2514 |+----------------------+| 2514 | +--------+ +--------+ + + [hub] [hub] + + +---------+[ ftp source ] +---------+[ ftp source ]

I noticed a drastic lessening of expected bandwidth thru the routers . On the range of seeing only 24-25% of available ether bandwidth . But when I plug the two 'ftp source's into the same hub I am getting a more resonable 66-75% of the available ether bandwidth .

Has anyone any info on what might be the cause of the lack of expected thru put . Tia , JimL

+----------------------------------------------------------------+ | James W. Laferriere | System Techniques | Give me VMS | | Network Engineer | 25416 22nd So | Give me Linux | | babydr@baby-dragons.com | DesMoines WA 98198 | only on AXP | +----------------------------------------------------------------+

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