Identifies the protocol type. The switch chip in the RoamAbout M2
can recognize nine predefined high-level protocol types, and up to
three user-defined EtherTypes. (Some or all EtherType filters may
be reserved for use in implementing other features.)
Protocol types are as follows:
userEtherType(1) - Packets whose Ethernet V2 EtherTypes or IEEE
802.3 LLC/SNAP EtherTypes match the user-defined EtherType
etsysESwitchEtherType[ etsysESwitchProtocolIndex ].
ipv4(2) - Internet Protocol version 4 carried in Ethernet V2
frames or IEEE 802.3 frames with LLC/SNAP headers. Also,
ARP packets carried in Ethernet V2 frames.
ipxEthernet(3) - IPX carried in Ethernet V2 frames.
ipxRaw(4) - IPX carried in IEEE 802.3 frames with no LLC.
ipxLlc(5) - IPX carried in IEEE 802.3 frames with LLC headers.
ipxSnap(6) - IPX carried in IEEE 802.3 frames with LLC/SNAP
headers.
sna(7) - SNA carried in IEEE 802.3 frames with LLC headers.
netBios(8) - NetBIOS carried in IEEE 802.3 frames with LLC
headers.
decnet(9) - DECnet carried in Ethernet V2 frames or in IEEE 802.3
frames with LLC/SNAP headers.
ipv6(10) - Internet Protocol version 6 carried in Ethernet V2
frames or IEEE 802.3 frames with LLC/SNAP headers