can I ask mtu question

[nonobvious at gmail.com (Bill Stewart)]

>> Which standard are you referring to? AFAIK, nothing above 1500 is
>> standardised

I've had two different kinds of customer requests for jumbo frames
- customers that want very large frames for performance reasons;
   Many ethernet switches support 9000 or more, some don't,
   and some technologies like ATM support ~4470.
   Sometimes the ability to provide them depends on tunnel modes.
- customers that want frames that are at least ~1700-1800 bytes
   so that a few layers of IPSEC or VLAN headers or whatever
   won't break the 1500-byte packets inside them.


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             Thanks;     Bill

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