thanks Florin/Dave. Florin's suggestion of disabling offload works. Regards, Hang
On Wed, Feb 22, 2017 at 4:41 AM, Dave Barach (dbarach) <dbar...@cisco.com> wrote: > The Linux kernel is turfing the TCP (SYN) packets. > > > > If you run wireshark or tcpdump, you’ll rapidly confirm that > reasonable-looking SYNs are being sent. Check to see if missing routes or > iptables are responsible. > > > > IIRC Keith Burns managed to make this work, copying him. > > > > Thanks… Dave > > > > *From:* vpp-dev-boun...@lists.fd.io [mailto:vpp-dev-boun...@lists.fd.io] *On > Behalf Of *Hang Shi > *Sent:* Wednesday, February 22, 2017 1:20 AM > *To:* vpp-dev@lists.fd.io > *Subject:* [vpp-dev] TCP Connection Failed Between two veth interfaces > switched via VPP > > > > Hi, > > I am trying to do tcp connection between two veth interfaces via switching > in VPP, as done in below wiki. The ping is successful, however, the TCP > connection failed for a TCP connection from a veth interface in one > namespace to another namespace. Tried on http and netcat server. Using > latest git master branch. Going to try earlier codes as this seems to be a > basic scenarios. Anyone has any quick ideas? > > Below are the steps/commands I tried: > > https://wiki.fd.io/view/VPP/Tutorial_Routing_and_Switching > > > > > > # create namespace ns0 > > ip netns add ns0 > > ip link add vpp0 type veth peer name vethns0 > > ip link set vethns0 netns ns0 > > ip netns exec ns0 ip link set lo up > > ip netns exec ns0 ip link set vethns0 up > > ip netns exec ns0 ip addr add 10.1.1.1/24 dev vethns0 > > ip link set vpp0 up > > > > #create namespace ns1 > > ip netns add ns1 > > ip link add vpp1 type veth peer name vethns1 > > ip link set vethns1 netns ns1 > > ip netns exec ns1 ip link set lo up > > ip netns exec ns1 ip link set vethns1 up > > ip netns exec ns1 ip addr add 10.1.1.2/24 dev vethns1 > > ip link set vpp1 up > > > > # create host-interfaces for vpp0 and vpp1, and assign them to bridge > domain 1 > > vppctl create host-interface name vpp0 > > vppctl create host-interface name vpp1 > > vppctl set interface state host-vpp0 up > > vppctl set interface state host-vpp1 up > > vppctl set interface l2 bridge host-vpp0 1 > > vppctl set interface l2 bridge host-vpp1 1 > > > > > # on HTTP Server terminal > > root@aurora-vpp-vm1:~# ip netns exec ns1 python -m SimpleHTTPServer 80 > > Serving HTTP on 0.0.0.0 port 80 ... > > > > # on HTTP Client terminal > > root@aurora-vpp-vm1:~# ip netns exec ns0 wget http://10.1.1.2:80 > > --2017-02-21 22:01:57-- http://10.1.1.2/ > > Connecting to 10.1.1.2:80... > > > > #also tried netcat, not working either. > > thanks, > > Hang > > >
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