CFP Classification

Napatech Link-Capture™ Software Features

Intel® PAC
Napatech SmartNIC
Content Type
Feature Description
Capture Software Version
Link™ Capture Software 12.9

CFP (Cisco FabricPath) frames

The frame decoder recognizes a CFP-encapsulated frame if the frame being analyzed has an EtherType field equal to 0x8903.

Note: A single packet cannot be recognized both as an ISL-encapsulated frame and a CFP-encapsulated frame. For packets with both encapsulations, the outermost encapsulation is decoded and the inner layer 2 packet is decoded as EtherII (for recognized CFP encapsulation) or SNAP (for recognized ISL encapsulation), and further decoding is stopped.
Note: CFP classification does not apply to NT40E3-4-PTP running on the capture/replay image nor to NT40A01 running on the 4 × 10/1 Gbit/s SLB image.

CFP length

The length of the CFP field is 16 bytes before the encapsulated Ethernet frame and 0 bytes after the Ethernet frame.