Hi Ruijing,
It seems that there may be some issue on the gtpu decapsulation.
Could you help to capture the traffic between the vpp1 side and vpp2 side?
Thanks,
Hongjun
From: Guo, Ruijing <ruijing....@intel.com>
Sent: Thursday, October 31, 2019 2:57 PM
To: vpp-dev@lists.fd.io
Cc: Ni, Hongjun <hongjun...@intel.com>
Subject: vpp with gtpu
Hi,
I tried vpp (18.04-release, 19.08.1-release) with gtpu. it cannot work. Could
you pls help?
Vpp1 setup:
sudo vppctl create host-interface name eth1
sudo vppctl set inter stat host-eth1 up
sudo vppctl set int mac address host-eth1 52:54:00:43:88:63
sudo vppctl set int ip add host-eth1 192.168.1.21/24
sudo vppctl show ip arp
sudo vppctl create gtpu tunnel src 192.168.1.21 dst 192.168.1.22 teid 13
sudo vppctl set int ip address gtpu_tunnel0 10.10.1.1/24
sudo vppctl set int stat gtpu_tunnel0 up
Vpp2 setup:
sudo vppctl create host-interface name eth1
sudo vppctl set inter stat host-eth1 up
sudo vppctl set int ip add host-eth1 192.168.1.22/24
sudo vppctl set int mac address host-eth1 52:54:00:12:ab:01
sudo vppctl create gtpu tunnel src 192.168.1.22 dst 192.168.1.21 teid 13
sudo vppctl set int ip address gtpu_tunnel0 10.10.1.2/24
sudo vppctl set int stat gtpu_tunnel0 up
vpp1:
vagrant@vpp1:/vagrant$ sudo vppctl ping 192.168.1.22
116 bytes from 192.168.1.22: icmp_seq=1 ttl=64 time=3.8251 ms (<<< expect)
vagrant@vpp1:/vagrant$ sudo vppctl ping 10.10.1.2
Statistics: 5 sent, 0 received, 100% packet loss (<<< expect ping can work)
I use wiresharp to decode the packets. TEID = 13 (exepct)
Vpp2:
Packet 13
00:18:42:156858: af-packet-input
af_packet: hw_if_index 1 next-index 4
tpacket2_hdr:
status 0x81 len 146 snaplen 146 mac 66 net 80
sec 0x5dbb0dcd nsec 0x15b67ed8 vlan 0 vlan_tpid 0
00:18:42:156873: ethernet-input
IP4: 52:54:00:43:88:63 -> 52:54:00:12:ab:01
00:18:42:156883: ip4-input
UDP: 192.168.1.1 -> 192.168.1.22
tos 0x00, ttl 253, length 132, checksum 0x3a01
fragment id 0x0000
UDP: 24445 -> 2152
length 112, checksum 0x0000
00:18:42:156892: ip4-lookup
fib 0 dpo-idx 5 flow hash: 0x00000000
UDP: 192.168.1.1 -> 192.168.1.22
tos 0x00, ttl 253, length 132, checksum 0x3a01
fragment id 0x0000
UDP: 24445 -> 2152
length 112, checksum 0x0000
00:18:42:156901: ip4-local
UDP: 192.168.1.1 -> 192.168.1.22
tos 0x00, ttl 253, length 132, checksum 0x3a01
fragment id 0x0000
UDP: 24445 -> 2152
length 112, checksum 0x0000
00:18:42:156905: ip4-udp-lookup
UDP: src-port 24445 dst-port 2152
00:18:42:156907: gtpu4-input
GTPU decap error - tunnel for teid 13 does not exist
00:18:42:156913: error-drop
rx:host-eth1
00:18:42:156914: drop
gtpu4-input: no such tunnel packets
vagrant@vpp2:~$ sudo vppctl show error
Count Node Reason
32 gtpu4-input no such tunnel packets
6 arp-reply ARP replies sent
8 ip4-input ip4 source lookup miss
2 ip4-icmp-input echo replies sent
601 llc-input unknown llc ssap/dsap
17 ethernet-input no error
74 ethernet-input l3 mac mismatch
vagrant@vpp2:~$ sudo vppctl show gtpu tunnel
[0] src 192.168.1.22 dst 192.168.1.21 teid 13 fib-idx 0 sw-if-idx 2
encap-dpo-idx 13 decap-next-l2
Thanks,
-Ruijing
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