Information AboutJumbogram |
| CATEGORIES ABOUT JUMBOGRAM | |
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ETHERNET JUMBOGRAMS Standard Ethernet limits frames to a maximum size of 1500 Octets . This limit, while reasonable for standard 10Mb/s Ethernet, causes a significant load on hosts using high-speed Ethernet-based technologies, such as 10Gig Ethernet. Because of that most high-speed Ethernet hardware supports sending of frames larger than the 1500 octet maximum, typically at least up to 9600 octets. Use of non-standard frame sizes can cause hard-to-debug interoperability problems, for example when network switches silently discard large frames. Because of that, Ethernet jumbograms are seldom used outside of point-to-point connections between two specially configured hosts, typically within a Storage-area Network . The IEEE 802 series of standards does not include any form of Ethernet jumbogram. IPV6 JUMBOGRAMS The packet size field of IPv4 and IPv6 has a size of 16 bits; hence, IP packets are limited to a maximum size of 64kB. An optional feature of IPv6 , the ''jumbo payload'' option, allows the exchange of packets larger than this size between consenting hosts. Since both TCP and UDP include fields limited to 16 bits (length, urgent data pointer), support for IPv6 jumbograms requires slight tweaks to the transport layer. Both the ''jumbo payload'' options and the transport-layer tweaks are described in RFC 2675. |
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