Can any one please help me understand the invisible link that carries traffic from gre0 through birdge with NIC attached.
On Thu, Dec 5, 2013 at 10:10 PM, kevin parker <kevin.parker...@gmail.com>wrote: > Hi All, > I have a working GRE connected between one kvm host ovs 1.11 and > xenserver ovs 1.4.6 > > I have created an *isolated* bridge and connected virtual interface to > isolated bridge with private ip ,and then added *gre0* port by mentioning > remote public IP. > > Everything is fine, dont have any issues :) > > For understanding it better > > tried tcpdump on isolated bridge i am not able find anything other than > ARP request > > *tcpdump -i isolated -n not port 22 -v* >> tcpdump: listening on isolated, link-type EN10MB (Ethernet), capture size >> 65535 bytes >> 21:31:06.304223 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has >> 10.168.122.10 tell 10.168.122.200, length 28 > > > so used dump-flows on ovs 1.4.6 > ovs-dpctl dump-flows isolated|grep -v 'src=22' |grep -v 'dst=22' > in_port(3),eth(src=ae:0a:5e:8a:cc:2b,dst=52:54:00:bb:86:99),eth_type(0x0800),ipv4(src=10.168.122.200,dst=10.168.122.10,proto=1,tos=0,ttl=64,frag=no),icmp(type=8,code=0), > packets:0, bytes:0, used:never, actions:*1* > > in_port(1),eth(src=52:54:00:bb:86:99,dst=ae:0a:5e:8a:cc:2b),eth_type(0x0800),ipv4(src=10.168.122.10,dst=10.168.122.200,proto=1,tos=0,ttl=64,frag=no),icmp(type=0,code=0), > packets:0, bytes:0, used:never, actions:*3* > > From this if i understand correctly ovs is outputting to port 1 which is > *gre0* with remote ip .But i don't understand > 1.how packets go from *gre0* through bridge *kvmbr0* in which NIC is > bridged. > and > 2. tcpdump not showing any packets in isolated bridge. > > Can some one please help me understand this better or point to some > documentation > > Regards, > kevin >
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