Slow ftp using fibre

[SM_3]

This is what I have:
Fibre=gigabit Ethernet

When I ftp between 2 gigabit fibre boxes, I get 0.5 MB per sec.
When I ftp between 1 gigabit fibre box and 1 gigabit copper box I get 11MB per sec.

So when the fibre boxes talk to each other they talk at 0.5 MB per via FTP.

Have you experienced this before?

[harry d brown jr]

HPâ s white paper: PCI Gigabit Ethernet Performance, the Design Makes the Difference!
Follow the link for HP's white paper on Jumbo Frames and this link for HP's documentation on GigE.

Explanation of TCP overhead: http://sd.wareonearth.com/~phil/net/overhead/

FAQâ s on Ethernet: FAQ,

Information on the Nortel BayStack 5510-48T can be found by clicking on the link.

ttcp utility: http://hpux.cs.utah.edu/hppd/hpux/Networking/Admin/nttcp-1.47/

Microsoft benchmark on Gig-e stated their numbers:

SUN's white paper on Understanding Gigabit Ethernet Performance on Sun Fireâ ¢ Systems

btw, ftp is not a tool that one uses to measure performance.

live free or die
harry d

[harry d brown jr]

oops, missed half the links:

The Veritas NetBackup issues can probably be addressed by referring to the changes required in this document: http://seer.support.veritas.com/docs/183702.htm.

HPâ s white paper: PCI Gigabit Ethernet Performance, the Design Makes the Difference (http://docs.hp.com/hpux/onlinedocs/netcom/gbe_perf_final.pdf)!
Follow the link for HP's white paper on Jumbo Frames (http://docs.hp.com/hpux/onlinedocs/netcom/jumbo_final.pdf) and this link for HP's documentation on GigE (http://docs.hp.com/hpux/netcom/index.html#1000Base-T%20and%201000Base-SX%20%28Gigabit%20Ethernet%29).

Explanation of TCP overhead: http://sd.wareonearth.com/~phil/net/overhead/

FAQâ s on Ethernet: (http://www.faqs.org/faqs/LANs/ethernet-faq/index.html)

Information on the Nortel BayStack 5510-48T can be found by clicking on the link: http://www.nortelnetworks.com/products/02/bstk/switches/baystack_5510/

ttcp utility: http://hpux.cs.utah.edu/hppd/hpux/Networking/Admin/nttcp-1.47/

Microsoft benchmark on Gig-e stated their numbers: http://download.microsoft.com/download/9/d/0/9d0f411d-640d-47cd-8bdb-326c7fd6078f/perf.doc

SUN's white paper on Understanding Gigabit Ethernet Performance on Sun Fireâ ¢ Systems (http://www.sun.com/blueprints/0203/817-1657.pdf)


live free or die
harry d

[SM_3]

Thanks.

Will look at the links and get back.

[SM_3]

Enabling jumbo frames has not resolved this issue we have.

Will reply back when we've got to the heart of the problem.

Thanks.

[SM_3]

The problem was rate shaping on the fast iron, this was set incorrectly.

Bye.:)

[SM_3]

Incorrect rate shape!