Re: [WISPA] Jumbo Frames
Based on my understanding, it won't make a difference unless both ends of the connection and every router in between has its MTU set >1500. You can have the MTU set to 9000 on every router on your network, but if your customer's router/PC is 1500, all frames will be 1500. People on NANOG were discussing this a couple of weeks ago when talking about optimizing multi-hundred megabit transfers across the Internet where they had optimized it on their network, both endpoints, and arranged it with all of their transit providers. But it's not something you can just turn on in the middle and get "more speed." -Kristian On Wed, 2010-12-15 at 13:30 -0500, RickG wrote: > Well, I havent analysed it yet but with all the facebook uploads, > online backups, and email attachedments going on I wonder if that is > the case? > > On Wed, Dec 15, 2010 at 9:31 AM, David E. Smith wrote: > > > On Tue, Dec 14, 2010 at 23:23, RickG > wrote: > Is there any reason to enable Jumbo Frames? My RB1000 > and Dell switches have the capabilities. Time Warner > says they can enable it on my fiber switch if I want. > > > It probably won't hurt, but unless you're regularly moving > very large files point-to-point (and can enable jumbo frames > on all the intermediate gear) it also probably won't have any > noticeable benefit. > > > David Smith > MVN.net > > > > > > > > WISPA Wants You! Join today! > http://signup.wispa.org/ > > > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > -- > -RickG > > > WISPA Wants You! Join today! > http://signup.wispa.org/ > > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Jumbo Frames
Thats what I wanted to know. You're right - no benefit for my end users. Thanks! On Wed, Dec 15, 2010 at 1:40 PM, David E. Smith wrote: > > > On Wed, Dec 15, 2010 at 12:30, RickG wrote: > >> Well, I havent analysed it yet but with all the facebook uploads, online >> backups, and email attachedments going on I wonder if that is the case? >> > > First, by "very large files" I'm thinking tens of terabytes. Second, > there's only a benefit to jumbo-frames if EVERY device between the two > endpoints supports it. Chances are, the end-user's desktop doesn't support > it (or doesn't have it enabled), or you've got an old switch at a tower, or > someone at a co-lo on the other coast forgot to enable it. If any piece of > gear between the two doesn't support jumbo frames, your giant packet will > get fragmented anyway, and you may end up with worse performance. > > Obviously, you want to bench-test for your particular application, but > outside of some specialized environments (like Internet2) jumbo frames don't > really win you very much. > > David Smith > MVN.net > > > > > > > WISPA Wants You! Join today! > http://signup.wispa.org/ > > > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -- -RickG WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Jumbo Frames
On Wed, Dec 15, 2010 at 12:30, RickG wrote: > Well, I havent analysed it yet but with all the facebook uploads, online > backups, and email attachedments going on I wonder if that is the case? > First, by "very large files" I'm thinking tens of terabytes. Second, there's only a benefit to jumbo-frames if EVERY device between the two endpoints supports it. Chances are, the end-user's desktop doesn't support it (or doesn't have it enabled), or you've got an old switch at a tower, or someone at a co-lo on the other coast forgot to enable it. If any piece of gear between the two doesn't support jumbo frames, your giant packet will get fragmented anyway, and you may end up with worse performance. Obviously, you want to bench-test for your particular application, but outside of some specialized environments (like Internet2) jumbo frames don't really win you very much. David Smith MVN.net WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Jumbo Frames
Well, I havent analysed it yet but with all the facebook uploads, online backups, and email attachedments going on I wonder if that is the case? On Wed, Dec 15, 2010 at 9:31 AM, David E. Smith wrote: > > > On Tue, Dec 14, 2010 at 23:23, RickG wrote: > >> Is there any reason to enable Jumbo Frames? My RB1000 and Dell switches >> have the capabilities. Time Warner says they can enable it on my fiber >> switch if I want. >> > > It probably won't hurt, but unless you're regularly moving very large files > point-to-point (and can enable jumbo frames on all the intermediate gear) it > also probably won't have any noticeable benefit. > > David Smith > MVN.net > > > > > > > WISPA Wants You! Join today! > http://signup.wispa.org/ > > > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -- -RickG WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Jumbo Frames
On Tue, Dec 14, 2010 at 23:23, RickG wrote: > Is there any reason to enable Jumbo Frames? My RB1000 and Dell switches > have the capabilities. Time Warner says they can enable it on my fiber > switch if I want. > It probably won't hurt, but unless you're regularly moving very large files point-to-point (and can enable jumbo frames on all the intermediate gear) it also probably won't have any noticeable benefit. David Smith MVN.net WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Jumbo Frames
Greater throughput. On Dec 15, 2010 12:24 AM, "RickG" wrote: > Is there any reason to enable Jumbo Frames? My RB1000 and Dell switches have > the capabilities. Time Warner says they can enable it on my fiber switch if > I want. > -- > -RickG WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
[WISPA] Jumbo Frames
Is there any reason to enable Jumbo Frames? My RB1000 and Dell switches have the capabilities. Time Warner says they can enable it on my fiber switch if I want. -- -RickG WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
