Hi Kevin, I am not aware of a way to decode MPLSoUDP currently. MPLSoUDP is defined in https://tools.ietf.org/html/rfc7510.
-Nischal On May 30, 2016, at 5:14 PM, kevin parrikar <[email protected]<mailto:[email protected]>> wrote: Thanks Nischal, I didn't know that. Still is there a way to see MPLS labels and inner headers (vm traffic ) on tcpdump. Is mpls over UDP same as MPLS over IP (RFC 4023) Thanks for your help On 30 May 2016 6:48 a.m., "Nischal Sheth" <[email protected]<mailto:[email protected]>> wrote: Note that 51234 is the pre-standard DST port used for MPLS-in-UDP by Contrail. -Nischal On May 29, 2016, at 1:58 PM, Harshad Nakil <[email protected]<mailto:[email protected]>> wrote: > Vrouter is using MPLSoUDP. Most probably TCP dump does not understand this > encapsulation. > > Regards > -Harshad > > >> On May 29, 2016, at 11:56 AM, kevin parrikar >> <[email protected]<mailto:[email protected]>> wrote: >> >> hello all >> I am new to contrail ,worked on open vswitch and NSX implementation and >> trying contrail to understand it more deeply for a different product. >> >> Using contrail 2.20 with MPLS over UDP. >> >> 1. In tcpdump i dont see any MPLS labels instead i see UDP communication >> between compute nodes using ephemeral ports.for ping between vms. >> >> 16:16:14.262402 IP 192.168.2.5.64681 > 192.168.2.6.51234: UDP, length 102 >> 0x0000: 4500 0082 b5ca 0000 4011 3f45 c0a8 0205 >> 0x0010: c0a8 0206 fca9 c822 006e 0000 0001 5140 >> 0x0020: 0205 fdd1 e8c9 024e 9373 73f9 0800 4500 >> 0x0030: 0054 b5ca 0000 4001 68b7 ac10 0203 ac10 >> 0x0040: 0204 0000 c0d2 2101 7956 3116 73bf 0000 >> 0x0050: 0000 0000 0000 0000 0000 0000 0000 0000 >> 0x0060: 0000 0000 0000 0000 0000 0000 0000 0000 >> 0x0070: 0000 0000 0000 0000 0000 0000 0000 0000 >> 0x0080: 0000 >> >> Can some one tell me how can Lables as wells as tenant VM packets be seen.In >> GRE i was able to see this but not in MPLS over GRE. >> >> >> >> >> Regards, >> Kevin >> >> _______________________________________________ >> Users mailing list >> [email protected]<mailto:[email protected]> >> http://lists.opencontrail.org/mailman/listinfo/users_lists.opencontrail.org > > _______________________________________________ > Dev mailing list > [email protected]<mailto:[email protected]> > http://lists.opencontrail.org/mailman/listinfo/dev_lists.opencontrail.org
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