Outer Ethernet Classification

Feature Set N-ANL11

Platform
Intel® PAC
Napatech SmartNIC
Content Type
Feature Description

Ethernet frames

Outer Ethernet frames (layer 2 frames) are classified in the basic classes shown in this table.

Class Classification Conditions Length of L2 Classification Data (in bytes)
EtherII The frame decoder recognizes an EtherII frame if both of these conditions are met:
  • The value of the MAC Length/Type field is larger than or equal to 1536 (0x0600).
  • The frame is not a PPPoE (point-to-point protocol over Ethernet) frame.
2
Novell_RAW The frame decoder recognizes a Novell_RAW frame if both of these conditions are met:
  • The value of the MAC Length/Type field is smaller than or equal to 1500 (0x05DC).
  • The MAC header is followed by an LLC header indicating a raw frame (DSAP=0xFF and SSAP=0xFF).
4
SNAP The frame decoder recognizes a SNAP frame if both of these conditions are met:
  • The value of the MAC Length/Type field is smaller than or equal to 1500 (0x05DC).
  • The MAC header is followed by SNAP headers (DSAP=0xAA or 0xAB, SSAP=0xAA or 0xAB, and Control=0x03, OUI=0x000000, EtherType=<16-bit>).
10
LLC The frame decoder assumes an LLC frame (the MAC header is assumed to be followed by a 3-byte LLC header) if the value of the MAC Length/Type field is smaller than or equal to 1500 (0x05DC), and none of the above applies. 5
PPPoE Discovery The frame decoder recognizes a PPPoE Discovery frame if both of these conditions are met:
  • The value of the EtherType field is equal to 0x8863.
  • The value of the Ver field is equal to 1.
  • The value of the Type field is equal to 1.
 
PPPoE Session The frame decoder recognizes a PPPoE Session frame if both of these conditions are met:
  • The value of the EtherType field is equal to 0x8864.
  • The value of the Ver field is equal to 1.
  • The value of the Type field is equal to 1.
 
Other The frame decoder recognizes an Other packet if none of the above applies.