Hi Florin, Looks like server is not successfully UP when we use UDP APP. But on TCP it is successful. Below is the app server details.
*UDP:* vpp# show app server Connection App vpp# *TCP:* vpp# show app server Connection App [#0][T] 172.28.128.3:7891->0.0.0.0:0 ldp-2519-app Thanks, Satish. On Thu, Mar 29, 2018 at 5:49 PM, Florin Coras <fcoras.li...@gmail.com> wrote: > Hi Satish, > > What does “show app server” report? > > Thanks, > Florin > > > > On Mar 29, 2018, at 3:14 PM, Satish <satish.f...@gmail.com> wrote: > > Hi, > > I am trying to use Host stack of VPP for UDP connection through VCL > library. > Server application listen on port 7891. > > But when i try to connect to this server, the connection is not successful > saying (no listener). > > But the same app when i change to use TCP it works fine. > > Below is the trace info and VPP version information. Could some one please > let me know what is > the issue in this? Does any one tried with VCL for UDP before and > succeeded? > > Thanks & Regards, > Satish. > > > vpp# show trace > ------------------- Start of thread 0 vpp_main ------------------- > Packet 1 > > 00:52:47:772356: dpdk-input > GigabitEthernet0/8/0 rx queue 0 > buffer 0x3333: current data 14, length 46, free-list 0, clone-count 0, > totlen-nifb 0, trace 0x0 > ext-hdr-valid > l4-cksum-computed l4-cksum-correct l2-hdr-offset 0 > l3-hdr-offset 14 > PKT MBUF: port 0, nb_segs 1, pkt_len 60 > buf_len 2176, data_len 60, ol_flags 0x0, data_off 128, phys_addr > 0x1f8ccd40 > packet_type 0x0 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0 > IP4: 08:00:27:02:dd:ad -> 08:00:27:f9:67:0c > UDP: 172.28.128.5 -> 172.28.128.3 > tos 0x00, ttl 64, length 37, checksum 0x38e9 > fragment id 0xa99d, flags DONT_FRAGMENT > UDP: 37797 -> 7891 > length 17, checksum 0x63da > 00:52:47:772392: ip4-input > UDP: 172.28.128.5 -> 172.28.128.3 > tos 0x00, ttl 64, length 37, checksum 0x38e9 > fragment id 0xa99d, flags DONT_FRAGMENT > UDP: 37797 -> 7891 > length 17, checksum 0x63da > 00:52:47:772396: ip4-lookup > fib 0 dpo-idx 7 flow hash: 0x00000000 > UDP: 172.28.128.5 -> 172.28.128.3 > tos 0x00, ttl 64, length 37, checksum 0x38e9 > fragment id 0xa99d, flags DONT_FRAGMENT > UDP: 37797 -> 7891 > length 17, checksum 0x63da > 00:52:47:772398: ip4-local > UDP: 172.28.128.5 -> 172.28.128.3 > tos 0x00, ttl 64, length 37, checksum 0x38e9 > fragment id 0xa99d, flags DONT_FRAGMENT > UDP: 37797 -> 7891 > length 17, checksum 0x63da > 00:52:47:772401: ip4-udp-lookup > UDP: src-port 37797 dst-port 7891 (no listener) > 00:52:47:772406: ip4-icmp-error > UDP: 172.28.128.5 -> 172.28.128.3 > tos 0x00, ttl 64, length 37, checksum 0x38e9 > fragment id 0xa99d, flags DONT_FRAGMENT > UDP: 37797 -> 7891 > length 17, checksum 0x63da > > > > vpp# show version > vpp v18.04-rc0~482-gf6647e0 built by vagrant on localhost at Mon Mar 26 > 23:54:12 PDT 2018 > > > > > > >
