Hi Akash, While creating tunnels there if I set decap-next gtpu4-encap will it not work, it use the tried for the same right ? create gtpu tunnel src 10.21.58.142 dst 10.21.58.140 teid 13 tteid 14 encap-vrf-id 0 decap-next ip4 // instead of ip4, gtpu4-encap
Thanks, Regards, Venu On Fri, 16 Jul 2021 at 14:22, Akash S R <akashsr.akas...@gmail.com> wrote: > Hi Venumadhav, > > Sharing my knowledge nuggets as below: > * gtpu_input is an API which processes the gtpu packet for decapsulation > and fire out the packet as an IP packet. You cannot reach gtpu_encap_inline > with the same. But if you wish to send the Decapsulated IP packet to encap, > you can using the next0 variable which enqueues your packet to the next > node you wish to reach. > > I don't guarantee that your packet will be encapsulated without any error > but you can reach the next node you wish to reach in this way. > > Thanks and Regards, > Akash S R > > On Fri, Jul 16, 2021, 2:03 PM Venumadhav Josyula <vjosy...@gmail.com> > wrote: > >> Hi vpp gtpu experts, >> >> We have requirement where >> >> - we create gtpu tunnel >> - Now, we will hit gtpu input, where we will receive gtpu packet and >> when we send it out on the interface replace the tied with tried and >> massage the ip address of src and destination and send the packet out >> >> vpp# show vlib graph gtpu4-input >> Name Next Previous >> gtpu4-input error-drop [0] ip4-gtpu-bypass >> l2-input [1] ip4-udp-lookup >> ip4-input [2] >> ip6-input [3] >> vpp# >> >> vpp# show vlib graph gtpu4-encap >> Name Next Previous >> gtpu4-encap error-drop [0] ip4-dvr-dpo >> ip4-lookup [1] ip4-arp >> ip6-lookup [2] ip4-midchain >> ip4-load-balance [3] ip4-mcast-midchain >> ip4-rewrite-mcast >> ip4-rewrite-bcast >> ip4-rewrite >> interface-output >> >> vpp# show vlib graph gtpu4-input >> Name Next Previous >> gtpu4-input error-drop [0] ip4-gtpu-bypass >> l2-input [1] ip4-udp-lookup >> gtpu4-encap [2] >> gtpu6-encap [3] >> >> Now we want next gtpu-input to be gtpu4-encap and the next of that to >> ip4-load-balance or directly send it out. Is such thing possible. >> >> Thanks, >> Regards, >> Venu >> >> >> >>
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