Hi

Following up on a previous email we have done some more deeper digging.

We have two servers, each of them configured with a network interface using 
vlan #4.

Doing a ping on host 192.168.4.2, a tcpdump on that same machine shows:

12:28:45.703365 70:71:bc:46:9a:be>   ff:ff:ff:ff:ff:ff, ethertype 802.1Q 
(0x8100), length 46: vlan 4, p 0, ethertype ARP, Ethernet (len 6), IPv4 (len 4), 
Request who-has 192.168.4.5 tell 192.168.4.2, length 28

which is what we expect

On the controller side, using the wireshark plug-in we see.

OpenFlow Protocol
Header
       Version: 0x01
       Type: Packet In (AM) (10)
       Length: 74
       Transaction ID: 0
Packet In
       Buffer ID: 747
       Frame Total Length: 56
       Frame Recv Port: 1
       Reason Sent: No matching flow (0)
       Frame Data: FFFFFFFFFFFF7071BC469ABE080600010800060400017071...
       Ethernet II, Src: 70:71:bc:46:9a:be (70:71:bc:46:9a:be), Dst: Broadcast 
(ff:ff:ff:ff:ff:ff)
               Destination: Broadcast (ff:ff:ff:ff:ff:ff)
               Source: 70:71:bc:46:9a:be (70:71:bc:46:9a:be)
                       Type: ARP (0x0806)
                       Trailer: 0000000000000000000000000000
               Address Resolution Protocol (request)
                       Hardware type: Ethernet (0x0001)
                       Protocol type: IP (0x0800)
                       Hardware size: 6
                       Protocol size: 4
                       Opcode: request (0x0001)
                       Is gratuitous: False
                       Sender MAC address: 70:71:bc:46:9a:be (70:71:bc:46:9a:be)
                       Sender IP address: 192.168.4.2 (192.168.4.2)
                       Target MAC address: 00:00:00_00:00:00 (00:00:00:00:00:00)
                       Target IP address: 192.168.4.5 (192.168.4.5)


and a tcpdump on the other server shows:

12:28:45.493121 70:71:bc:46:9a:be>   ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), 
length 68: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.4.5 tell 
192.168.4.2, length 54

Somewhere the vlan tag is being dropped. If we correctly understand the 
wireshark trace on the controller, it appears that the Indigo firmware is not 
fully forwarding the packet.

Any help would be greatly appreciated.

Cheers
Saeed



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