Editing Internetwork Packet Exchange (section)

==Frame formats==
IPX can be transmitted over Ethernet using one of the following 4 frame formats or encapsulation types:

* [[Ethernet frame#Novell raw IEEE 802.3|802.3 (raw)]] encapsulation comprises an IEEE 802.3 frame header (destination MAC, source MAC, length) immediately followed by IPX data. It is used in legacy systems, and can be distinguished by the first two bytes of the IPX header always containing a value of 0xFFFF, which cannot be interpreted as valid LLC Destination and Source [[Service Access Point]]s in this location of the frame.
* [[Ethernet frame#IEEE 802.2 LLC|802.2 (LLC or Novell)]] comprises an IEEE 802.3 frame header (destination MAC, source MAC, length) followed by an [[Logical Link Control|LLC]] header ([[Service Access Point|DSAP]] 0xE0, [[Service Access Point|SSAP]] 0xE0, control 0x03) followed by IPX data. The 0xE0 fields of the LLC header indicate "NetWare".
* [[802.2]] ([[Subnetwork Access Protocol|SNAP]]) comprises an IEEE 802.3 frame header, an LLC header (DSAP 0xAA, SSAP 0xAA, control 0x03), a SNAP header ([[Organizationally Unique Identifier|OUI]] 0x000000, type 0x8137), and IPX data. The 0xAA fields of the LLC header indicate "SNAP", and the OUI 0x000000 in the SNAP header indicates an encapsulated [[EtherType]].
* [[Ethernet frame#Ethernet II|Ethernet II]] encapsulation comprises an Ethernet II frame header (destination MAC, source MAC, [[EtherType]] 0x8137) followed by IPX data.

In non-Ethernet networks, only 802.2 and SNAP frame types are available.