for convenience, ping 192.168.123.2 -s 2000.
the 2 fragment is the following:
(could not see 1500-length frag at 192.168.123.2 by wireshark, only the
598-length)
Packet 2
00:05:34:358149: dpdk-input
TenGigabitEthernet6/0/0 rx queue 0
buffer 0x1268e: current data 14, length 1500, free-list 0, clone-count 0,
totlen-nifb 0, trace 0x1
ext-hdr-valid
l4-cksum-computed l4-cksum-correct l2-hdr-offset 0
PKT MBUF: port 0, nb_segs 1, pkt_len 1514
buf_len 2176, data_len 1514, ol_flags 0x180, data_off 128, phys_addr
0x1009a400
packet_type 0x11 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
Packet Types
RTE_PTYPE_L2_ETHER (0x0001) Ethernet packet
RTE_PTYPE_L3_IPV4 (0x0010) IPv4 packet without extension headers
IP4: 00:25:7c:30:05:f0 -> 00:a0:c9:00:00:00
UDP: 172.16.0.4 -> 172.16.0.3
tos 0x00, ttl 64, length 1500, checksum 0xf86a
fragment id 0x047f, flags MORE_FRAGMENTS
UDP: 4789 -> 4789
length 1530, checksum 0x0000
00:05:34:358153: ip4-input-no-checksum
UDP: 172.16.0.4 -> 172.16.0.3
tos 0x00, ttl 64, length 1500, checksum 0xf86a
fragment id 0x047f, flags MORE_FRAGMENTS
UDP: 4789 -> 4789
length 1530, checksum 0x0000
00:05:34:358155: nat44-out2in
NAT44_OUT2IN: sw_if_index 1, next index 3, session index -1
00:05:34:358156: nat44-out2in-reass
NAT44_REASS: sw_if_index 1, next index 1, status translated
00:05:34:358159: ip4-lookup
fib 0 dpo-idx 5 flow hash: 0x00000000
UDP: 172.16.0.4 -> 172.16.0.3
tos 0x00, ttl 64, length 1500, checksum 0xf86a
fragment id 0x047f, flags MORE_FRAGMENTS
UDP: 4789 -> 4789
length 1530, checksum 0x0000
00:05:34:358162: ip4-local
UDP: 172.16.0.4 -> 172.16.0.3
tos 0x00, ttl 64, length 1500, checksum 0xf86a
fragment id 0x047f, flags MORE_FRAGMENTS
UDP: 4789 -> 4789
length 1530, checksum 0x0000
00:05:34:358163: ip4-reassembly
reass id: 33, op id: 0 first bi: 75406, data len: 1480, ip/fragment[0, 1479]
new range: [0, 1479], off 0, len 1480, bi 75406
Packet 4
00:05:34:358188: dpdk-input
TenGigabitEthernet6/0/0 rx queue 0
buffer 0x126dc: current data 14, length 598, free-list 0, clone-count 0,
totlen-nifb 0, trace 0x3
ext-hdr-valid
l4-cksum-computed l4-cksum-correct l2-hdr-offset 0
PKT MBUF: port 0, nb_segs 1, pkt_len 612
buf_len 2176, data_len 612, ol_flags 0x180, data_off 128, phys_addr
0x1009b780
packet_type 0x211 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
Packet Types
RTE_PTYPE_L2_ETHER (0x0001) Ethernet packet
RTE_PTYPE_L3_IPV4 (0x0010) IPv4 packet without extension headers
RTE_PTYPE_L4_UDP (0x0200) UDP packet
IP4: 00:25:7c:30:05:f0 -> 00:a0:c9:00:00:00
UDP: 172.16.0.4 -> 172.16.0.3
tos 0x00, ttl 64, length 598, checksum 0x1bf0
fragment id 0x0480
UDP: 4789 -> 4789
length 578, checksum 0x0000
00:05:34:358189: ip4-input-no-checksum
UDP: 172.16.0.4 -> 172.16.0.3
tos 0x00, ttl 64, length 598, checksum 0x1bf0
fragment id 0x0480
UDP: 4789 -> 4789
length 578, checksum 0x0000
00:05:34:358189: nat44-out2in
NAT44_OUT2IN: sw_if_index 1, next index 1, session index -1
00:05:34:358190: ip4-lookup
fib 0 dpo-idx 5 flow hash: 0x00000000
UDP: 172.16.0.4 -> 172.16.0.3
tos 0x00, ttl 64, length 598, checksum 0x1bf0
fragment id 0x0480
UDP: 4789 -> 4789
length 578, checksum 0x0000
00:05:34:358190: ip4-local
UDP: 172.16.0.4 -> 172.16.0.3
tos 0x00, ttl 64, length 598, checksum 0x1bf0
fragment id 0x0480
UDP: 4789 -> 4789
length 578, checksum 0x0000
00:05:34:358191: ip4-udp-lookup
UDP: src-port 4789 dst-port 4789
00:05:34:358192: vxlan4-input
VXLAN decap from vxlan_tunnel0 vni 100 next 1 error 0
00:05:34:358196: l2-input
l2-input: sw_if_index 5 dst 4e:20:08:3e:15:e9 src 00:25:7c:30:05:ef
00:05:34:358201: l2-learn
l2-learn: sw_if_index 5 dst 4e:20:08:3e:15:e9 src 00:25:7c:30:05:ef bd_index 1
00:05:34:358206: l2-fwd
l2-fwd: sw_if_index 5 dst 4e:20:08:3e:15:e9 src 00:25:7c:30:05:ef bd_index 1
00:05:34:358207: l2-output
l2-output: sw_if_index 4 dst 4e:20:08:3e:15:e9 src 00:25:7c:30:05:ef data 08
00 45 00 02 24 2e 48 00 b9 40 01
00:05:34:358208: tapcli-0-output
tapcli-0
IP4: 00:25:7c:30:05:ef -> 4e:20:08:3e:15:e9
ICMP: 192.168.123.3 -> 192.168.123.2
tos 0x00, ttl 64, length 548, checksum 0xd281
fragment id 0x2e48 offset 1480, flags
ICMP unknown 0xc0 checksum 0xc2c3
王传国
山东华辰泰尔信息科技股份有限公司 研发中心
电 话：0531-62325309 88877658-8019
手 机：18615184689
传 真：0531-88870859
网 址：http://www.huachentel.com
地 址：山东省济南市高新区舜华路2000号舜泰广场8号楼西区17层
邮 编：250101
发件人： Matus Fabian -X (matfabia - PANTHEON TECHNOLOGIES at Cisco)
发送时间： 2018-11-16 16:59
收件人： 王传国; vpp-dev
主题： RE: [vpp-dev] NAT44 && VXLAN tunnel && ip reassembly && ip frag can not
work correctly at vpp stable/1810
Hi,
Could you please provide packet trace?
Matus
From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of ???
Sent: Friday, November 16, 2018 9:54 AM
To: vpp-dev <vpp-dev@lists.fd.io>
Subject: [vpp-dev] NAT44 && VXLAN tunnel && ip reassembly && ip frag can not
work correctly at vpp stable/1810
Hi all,
ping 192.168.123.2 -s 6000 from 192.168.123.3 that out of remote
vxlan-tunnel-endpoint failed when the NAT44 config was added!
And not NAT44 -> correct; add NAT44 -> faild!
Who can help? Maybe, this is a bug.
#########################################
set int state TenGigabitEthernet6/0/0 up
set int ip addr TenGigabitEthernet6/0/0 172.16.0.3/24
create bridge-domain 11 learn 1 forward 1 uu-flood 1 flood 1 arp-term 1
loopback create
set int l2 bridge loop0 11 bvi
set int ip address loop0 192.168.123.1/24
set int state loop0 up
tap connect lstack address 192.168.123.2/24
set int l2 bridge tapcli-0 11
set int state tapcli-0 up
nat44 add interface address TenGigabitEthernet6/0/0
set interface nat44 in loop0 out TenGigabitEthernet6/0/0
nat44 add static mapping local 192.168.123.2 22 external
TenGigabitEthernet6/0/0 22 tcp
nat44 forwarding enable
王传国
山东华辰泰尔信息科技股份有限公司 研发中心
电 话：0531-62325309 88877658-8019
手 机：18615184689
传 真：0531-88870859
网 址：http://www.huachentel.com
地 址：山东省济南市高新区舜华路2000号舜泰广场8号楼西区17层
邮 编：250101
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