Hi Neale,

Yep, it's up and running.
Thanks man.

Best Regards,
Omer

On Fri, Jan 11, 2019, 1:33 PM Neale Ranns (nranns) <nra...@cisco.com wrote:

>
>
> Hi Omer,
>
>
>
> Do you have your use case working now?
>
>
>
> /neale
>
>
>
> *De : *<omer.maj...@sofioni.com> au nom de "omer.maj...@sofioni.com" <
> omer.maj...@sofioni.com>
> *Date : *vendredi 11 janvier 2019 à 02:57
> *À : *"Neale Ranns (nranns)" <nra...@cisco.com>
> *Cc : *Omer Majeed <omer.majeed...@gmail.com>, "vpp-dev@lists.fd.io" <
> vpp-dev@lists.fd.io>
> *Objet : *Re: [vpp-dev] :: GRE tunnel dropping MPLS packets
>
>
>
> Hi Neale,
>
> Route for destination IP of GRE tunnel was also added as an MPLS route.
>
> And MPLS in VPP doesn't work for L2 forwarding, hence GRE tunnel was
> dropping packets.
>
> Thanks.
>
> Best Regards,
>
> Omer
>
>
>
>
>
> On 2019-01-08 17:12, Neale Ranns via Lists.Fd.Io wrote:
>
>
>
> Hi Omer,
>
>
>
> Your config looks OK. I would start debugging with a packet trace.
>
>
>
> /neale
>
>
>
>
>
> *De : *<vpp-dev@lists.fd.io> au nom de Omer Majeed <
> omer.majeed...@gmail.com>
> *Date : *lundi 7 janvier 2019 à 20:47
> *À : *"vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io>
> *Objet : *[vpp-dev] :: GRE tunnel dropping MPLS packets
>
>
>
> Hi,
>
>
>
> I'm running VPP on Centos 7 machine (say machine A), and running an
> application on other centos 7 machine (say machine B).
>
> I've made a GRE tunnel between those 2 machines.
>
>
>
> vpp# show gre tunnel
> [0] instance 0 src 192.168.17.10 dst 192.168.17.6 fib-idx 0 sw-if-idx 8
> payload L3
>
>
>
> Made that gre0 interface mpls enabled.
>
> I added outgoing mpls routes in VPP for IPs on machine B
>
>
>
> vpp# show ip fib table 2
>
> 192.168.100.4/32
>   unicast-ip4-chain
>   [@0]: dpo-load-balance: [proto:ip4 index:47 buckets:1 uRPF:49 to:[0:0]]
>     [0] [@10]: mpls-label[2]:[25:64:0:eos]
>         [@1]: mpls via 0.0.0.0 gre0: mtu:9000
> 4500000000000000fe2f196ec0a8110ac0a8110600008847
>           stacked-on:
>             [@3]: ipv4 via 192.168.17.6 loop9000: mtu:9000
> ac1f6b20498fdead000000280800
> 192.168.100.5/32
>   unicast-ip4-chain
>   [@0]: dpo-load-balance: [proto:ip4 index:46 buckets:1 uRPF:47 to:[0:0]]
>     [0] [@10]: mpls-label[0]:[30:64:0:eos]
>         [@1]: mpls via 0.0.0.0 gre0: mtu:9000
> 4500000000000000fe2f196ec0a8110ac0a8110600008847
>           stacked-on:
>             [@3]: ipv4 via 192.168.17.6 loop9000: mtu:9000
> ac1f6b20498fdead000000280800
>
>
>
> For reverse traffic I've added MPLS routes given below
>
>
>
> vpp# show mpls fib table 0
>
> 18:eos/21 fib:0 index:29 locks:2
>   src:API refs:1 entry-flags:uRPF-exempt,
> src-flags:added,contributing,active,
>     path-list:[35] locks:20 flags:shared, uPRF-list:31 len:0 itfs:[]
>       path:[35] pl-index:35 ip4 weight=1 pref=0 deag:  oper-flags:resolved,
>         [@0]: dst-address,unicast lookup in ipv4-VRF:2
>
>  forwarding:   mpls-eos-chain
>   [@0]: dpo-load-balance: [proto:mpls index:32 buckets:1 uRPF:32 to:[0:0]]
>     [0] [@6]: mpls-disposition:[0]:[ip4, pipe]
>         [@7]: dst-address,unicast lookup in ipv4-VRF:2
> 19:eos/21 fib:0 index:38 locks:2
>   src:API refs:1 entry-flags:uRPF-exempt,
> src-flags:added,contributing,active,
>     path-list:[35] locks:20 flags:shared, uPRF-list:31 len:0 itfs:[]
>       path:[35] pl-index:35 ip4 weight=1 pref=0 deag:  oper-flags:resolved,
>         [@0]: dst-address,unicast lookup in ipv4-VRF:2
>
>  forwarding:   mpls-eos-chain
>   [@0]: dpo-load-balance: [proto:mpls index:41 buckets:1 uRPF:41 to:[0:0]]
>     [0] [@6]: mpls-disposition:[9]:[ip4, pipe]
>         [@7]: dst-address,unicast lookup in ipv4-VRF:2
>
>
>
> When I try to ping from machine B to an IP in machine B (VPP VRF 2)
> through that GRE tunnel, I receive packets but GRE tunnel drops the packets.
>
> vpp# show int gre0
>
>         Name               Idx       State          Counter
> Count
> gre0                              8         up       rx
> packets                66
>                                                          rx
> bytes                  6996
>
> drops                        66
>
> (nil)                           66
>
>
>
> Is there anything else that needs to be done to get MPLS over GRE working?
>
> Any suggestions on how to debug the issue?
>
>
>
> Thanks a lot.
>
> Best Regards,
>
> Omer
>
>
>
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