nanog mailing list archives
RE: PMTU-D: remember, your load balancer is broken
From: John Fraizer <nanog () EnterZone Net>
Date: Wed, 14 Jun 2000 14:24:51 -0400 (EDT)
I'm having some trouble getting full throughput from a GigE pipe. Even in the 100baseTX/FDX down-stream, I'm not getting full link utilization (everything on switches, Cat6509 and 3512XLs). I'm considering increasing MTU sizes to MTU=4096+40, or even larger. Most of the data transmissions fall into the 5KB-50KB range. The site can be considered a large portal. What would be the effect on my upstream? Would it create problems? The only systems that see the Internet are the web-servers (dual NICs).
The one thing to consider if the fact that all devices on the ends of the GigaE support "Giant Frames." We have had no problems going with 4500+40 MTU server to server (direct) on GigaE but going to an HP 4000M switch, it was a different story. It seems that the HP's don't support giant frames. John Fraizer EnterZone, Inc
Current thread:
- PMTU-D: remember, your load balancer is broken Marc Slemko (Jun 13)
- Re: PMTU-D: remember, your load balancer is broken Valdis . Kletnieks (Jun 13)
- Re: PMTU-D: remember, your load balancer is broken Marc Slemko (Jun 13)
- Re: PMTU-D: remember, your load balancer is broken Valdis . Kletnieks (Jun 14)
- RE: PMTU-D: remember, your load balancer is broken Roeland Meyer (E-mail) (Jun 14)
- RE: PMTU-D: remember, your load balancer is broken John Fraizer (Jun 14)
- Re: PMTU-D: remember, your load balancer is broken Paul Vixie (Jun 17)
- Re: PMTU-D: remember, your load balancer is broken Valdis . Kletnieks (Jun 17)
- Re: PMTU-D: remember, your load balancer is broken Bora Akyol (Jun 18)
- Re: PMTU-D: remember, your load balancer is broken Paul Vixie (Jun 19)
- Re: PMTU-D: remember, your load balancer is broken Marc Slemko (Jun 13)
- Re: PMTU-D: remember, your load balancer is broken Valdis . Kletnieks (Jun 13)
- Re: PMTU-D: remember, your load balancer is broken Bennett Todd (Jun 14)
- <Possible follow-ups>
- Re: PMTU-D: remember, your load balancer is broken Steven M. Bellovin (Jun 13)
- Re: PMTU-D: remember, your load balancer is broken Valdis . Kletnieks (Jun 13)
- Re: PMTU-D: remember, your load balancer is broken Brett Frankenberger (Jun 14)
- Re: PMTU-D: remember, your load balancer is broken Greg A. Woods (Jun 15)
- Re: PMTU-D: remember, your load balancer is broken Valdis . Kletnieks (Jun 13)