Local Area Connection

[vanman]

Sometimes you need to set your Local Area Connection to get faster speed
Click/properties
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Click/configure
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Click /advanced
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Set jumbo high
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Set receive buffers high
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Set transmit buffers high

Press ok

[Gavin78]

what does this do then

[vanman]

:erm: Well if yours is set to receive 256 buffers it whon't be as quick as 512 buffers will it ?

:hyper:a 256MB buffer which enables it to store a large amount of data before sending it for analysis. So if there is a spike in usage on your network, there’s a much smaller chance of data getting lost before it can be examined in its entirely. If the network traffic entering the tap exceeds the capacity of the analyzer’s capturing cards, the buffer goes to work, capturing as much traffic as possible and releasing it only when the analyzer’s capacity to receive returns.

---------- Post added at 14:47 ---------- Previous post was at 14:29 ----------

https://www.cableforum.co.uk/images/local/2010/06/32.pnghttp://www.pingtest.net/result/18230966.png

Jumbo Frames
Jumbo Frame support is designed to the enhance Ethernet networking throughput and significantly reduce the CPU utilization of large file transfers like large multimedia files or large data files by enabling more efficient larger payloads per packet. By sending larger payloads per packet, fewer packets need to be routed, reducing the overhead on the CPU and potentially improving networking throughput.
Jumbo Frame support in Sun's Gigabit Ethernet Network Interface cards allows the sending and receiving of jumbo frame size packets which are up to 6 times the size of standard Ethernet packets. Jumbo Frame delivers up to 9216 byte packets instead of a 1522 byte packet for standard Ethernet, which consists of a 1500 byte payload + 14 bytes for header + VLAN tag 4 bytes + CRC 4 bytes.

[Gavin78]

ok so mine is already set at 512 will it go higher?

[pip08456]

As an XP user none of the above applies.

[vanman]

As an XP user none of the above applies.

:Yes: WORKS ON XP

[Sephiroth]

vanman

In general broadband use, VM cable context, where does the Jumbo Frames context sit? My understanding of Jumbo Frames is that it is TCP oriented for the LAN whereas broadband is IP oriented.

I don't see how BB performance can be enhanced with Jumbo Frames other than in an intensive LAN environment where all applications are cooperating as to MTU size and CPU or buffer capacity is required for concurrent IP work.

[pip08456]

The IEEE 802 standards committee does not recognize jumbo frames, as doing so would remove interoperability with existing Ethernet equipment and other 802 protocols,

The presence of Jumbo frames also has an adverse effect on network latency. Most commercial Internet service providers do not support jumbo frames

[Ignitionnet]

Thanks for the posts vanman but none of those settings are relevant to home broadband connections and won't do anything positive besides eat up resources.

No home router nor the VM cable modems support jumbo frames, so that setting will never be used, and there will never be an occasion where a home user needs their network card to buffer more data than default - do note that you copy/pasted that explanation from a passive network analysis tool's instructions where there may be a reason to use them.

Buffers being bigger doesn't speed things up, this is just how much data the driver's queue will hold before it drops them. Because your connection is so relatively slow compared with the capabilities of the network card, 100Mbps or 1000Mbps depending on settings, again this will be a complete non-issue.

The machine will never be waiting for response here when the bottleneck is a 20Mbps cable connection and buffering extra is a waste of memory on the host machine. Traffic will be slowed down by higher level protocol responses on the WAN on the transmit side, and the receive 'buffer' will never be filled as the fastest VM will deliver data to your network card at is the tier of service you've paid for.

---------- Post added at 10:51 ---------- Previous post was at 10:47 ----------

My understanding of Jumbo Frames is that it is TCP oriented for the LAN whereas broadband is IP oriented.

Jumbo frames are nothing to do with TCP or LAN-centric per se, if anything they show better results over the WAN due to higher RTTs, they are just a larger Ethernet frame.

---------- Post added at 10:55 ---------- Previous post was at 10:51 ----------

I don't see how BB performance can be enhanced with Jumbo Frames other than in an intensive LAN environment where all applications are cooperating as to MTU size and CPU or buffer capacity is required for concurrent IP work.

Applications don't care about MTU size and have no visibility of it unless they are specifically querying or testing for it, they just push data at the operating system's IP stack. Purely the operating systems that deal with these things. Remember your OSI 7 layer model (http://www.ns-linux.org/Uputstva/Teorija/slike/osi-model-7-layers.png).

https://www.cableforum.co.uk/images/local/2010/06/24.png