L3 VLANs on trunk ports don't ping each other

[xivamar]

Problem Description:

L3 VLANs on trunk ports don't ping each other.

OpenSwitch version:

OpenSwitch 0.4.0 (Build: appliance-ops-0.4.0-meraswitch/devel/master-20170126080249-dev)

Test Topology:

Steps to reproduce the problem (see attached files):

1. Configure DUTs and PCs as in attached file.

2. Send ping from PC2 to PC5 and vice-versa. Ping should be successful.

3. Try to send ping from DUT3 to vlan interface on DUT4. - NOK: ping is absent.

   switch# ping 172.16.1.4
   PING 172.16.1.4 (172.16.1.4) 100(128) bytes of data.
   From 172.16.1.3 icmp_seq=1 Destination Host Unreachable
   From 172.16.1.3 icmp_seq=2 Destination Host Unreachable
   From 172.16.1.3 icmp_seq=3 Destination Host Unreachable
   
   --- 172.16.1.4 ping statistics ---
   5 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4022ms

4. Check ip forwarding, routing and arp table:

   root@switch:~# cat /proc/sys/net/ipv4/ip_forward 1 root@switch:~#

   switch# show ip route 
   
   Displaying ipv4 routes selected for forwarding
   
   '[x/y]' denotes [distance/metric]
   
   172.16.1.0/24,  1 unicast next-hops 
       via  vlan2,  [0/0],  connected
   
   switch# 
   switch# show arp 
   ARP IPv4 Entries:
   ------------------
   IPv4 Address     MAC                Port             State     
   172.16.1.4                          vlan2            failed     
   switch# 

   DUTs don't reply on arp request:

config_vlans.txt