Hi Xyhue, As far as I know IPv4 fragmentation / reassembly is not supported on the tunnel types you listed. IP{4,6} fragmentation / reassembly is supported for IPv4 over IPv6 tunnels (src/vnet/map), but I think that's it.
In general the recommendation is to avoid fragmentation in tunnels because of the associated cost in reassembly for the tunnel endpoint. You _can_ of course, and feel free to have a go at implementing it if you like. Best regards, Ole > A detailed description of my problem: > I would like to test ip fragment reassembly,but it didn't work.Is there > anything wrong in my configuration: > set interface mtu 2000 host-eth2 > > Did I miss anything configuration? > If vpp support ip fragment reassembly on host interface . Does VPP support > the IP fragment reassembly on the virtual interface we created, such as the > GRE interface? > > Thanks, > xyxue > > From: xy...@fiberhome.com > Date: 2017-05-08 15:42 > To: otroan > CC: vpp-dev > Subject: Re: Re: [vpp-dev] sharding in tunnel > > I'm sorry I didn't say it clearly. > My questions: > Does the VPP support ip fragment in GRE、L2TP、MPLS tunnel? > Whether the tunnel supports configuring the MTU? > Whether the receiver supports ip reassembly? > > Thanks, > xyxue > > > From: otroan > Date: 2017-05-08 15:16 > To: 薛欣颖 > CC: vpp-dev > Subject: Re: [vpp-dev] sharding in tunnel > > When the IP message enters the GRE、L2TP、MPLS tunnel, does the VPP support > > sharding? > > I'm not quite sure what "sharding" would mean in this context. > Are you thinking of point to multipoint tunnels? Or ECMP to a set of anycast > tunnel destinations or something completely different? > > Cheers, > Ole
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