When using eCPRI fragmentation, is there a way to concatenate the fragments when they are in individual Ethernet packages?

asked 2023-09-20 11:04:29 +0000

arkey gravatar image

Hello, I wanted to ask if there is a setting or plugin to concatenate eCPRI fragments wich are individually packaged in Ethernet frames before using lower level dissection on them.

I'm not talking about the C bit for multiple eCPRI messages in one Ethernet frame but the O-RAN/eCPRI-IQ-Data specific SequenceID, E-bit and SubsequenceID.

As context I'm analysing O-RAN Fronthaul messages wich are packaged in eCPRI but way too long for Ethernet so they need to be fragmented. This fragmentation leads to only the first Fragment being correctly dissected in Wireshark the rest, because of the missing headers if interpreted as a standalone O-RAN message, not.

If there is no solution I might have to resort to Fragmentation on a lower level . Or write a plugin. :)

Cheers, Raphi

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If you can let me have a capture file, I will add support (I am the main author of packet-oran.c). Maybe add an issue at https://gitlab.com/wireshark/wireshar... ?

MartinM gravatar imageMartinM ( 2023-09-20 20:21:54 +0000 )edit