Re: [Wireshark-users] MPLS over UDP decoding

2018-12-28 Thread Yang Yu
On Fri, Dec 28, 2018 at 1:07 PM Guy Harris wrote: > From looking at the code, the logic appears to be "is the traffic to or from > UDP port 6635?" > > So *is* the traffic to or from UDP port 6635? indeed udp.dstport is 6635 (IANA assigned for mpls-udp), so it turned out a host was using udp/6635

[Wireshark-users] MPLS over UDP decoding

2018-12-27 Thread Yang Yu
Hi, In a packet capture of sFlow export packets, I noticed some sFlow samples were decoded as MPLS over UDP. The sFlow sampled packet was actually just a UDP VoIP packet with no dissector support. What logic does Wireshark use to opportunistically consider UDP payload to be MPLS? Thanks. Flow sa