On 11/13/2018 1:44 PM, Siva Teja ARETI wrote:
Hi Greg,
Did you happen to get a chance to investigate this further?
Unfortunately not. The IT team replaced a switch in the lab over the
weekend and my access to the
test machines is down.
I have a ticket in to get it fixed and will resume debugging then.
Sorry for the delay.
- Greg
Siva Teja.
On Fri, Nov 9, 2018 at 1:26 PM Gregory Rose <gvrose8...@gmail.com
<mailto:gvrose8...@gmail.com>> wrote:
On 11/8/2018 4:16 PM, Gregory Rose wrote:
On 11/8/2018 3:48 PM, Siva Teja ARETI wrote:
Siva,
When you see the error condition with the local_ip option on
vxlan can you provide me the output of
this command?
*# ip -s link show vxlan_sys_4789*
70: vxlan_sys_4789: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu
65470 qdisc noqueue master ovs-system state UNKNOWN mode
DEFAULT group default qlen 1000
link/ether 0e:9b:58:4a:6e:44 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 99 8 99 0
Hi Greg,
Here is the output.
[root@vm1 ~]# ip -s link show vxlan_sys_4789
27: vxlan_sys_4789: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65000
qdisc noqueue master ovs-system state UNKNOWN mode DEFAULT qlen 1000
link/ether ca:8f:0d:13:08:1f brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
3666796 130957 0 0 0 0
Siva Teja.
It will help me understand which error you're encountering.
Thanks!
- Greg
Well then obviously I still have errors in my own setup.
Back to the drawing board but I think it's a routing issue in my
case.
Thanks!
Siva,
I've made progress. I misconfigured my network which led to the
errors you were seeing. Now I've got that fixed up and I think
I'm reproducing the error you are seeing. When adding the local
IP option the packets are getting
delivered to the VXLAN port but not getting delivered over to the
bridge with the local ip address.
I have two machines A and B. They are bare metal running OVS with
kvm virtual machines. Here is the config:
A) IP 10.172.208.214
Bridge test-vxlan <-------- ip=10.1.1.3
Port test-vxlan
Interface test-vxlan
type: internal
Port "vxlan0"
Interface "vxlan0"
type: vxlan
options: {key="100", local_ip="10.1.1.3",
remote_ip="10.172.208.215"}
Port "vnet4"
Interface "vnet4" <-------- VM 1 with IP 10.1.1.1
B) IP 10.172.208.215
Bridge test-vxlan <--------- ip=10.1.1.4
Port "vxlan0"
Interface "vxlan0"
type: vxlan
options: {key="100", local_ip="10.1.1.4",
remote_ip="10.172.208.214"}
Port "vnet6"
Interface "vnet6" <-------- VM 2 with IP 10.1.1.2
Port test-vxlan
Interface test-vxlan
type: internal
From VM 2 on machine B I start a ping from 10.1.1.2 -> 10.1.1.1
roseg@ubuntu-1604-base:~$ ping 10.1.1.1
PING 10.1.1.1 (10.1.1.1) 56(84) bytes of data.
From 10.1.1.2 icmp_seq=1 Destination Host Unreachable
From 10.1.1.2 icmp_seq=2 Destination Host Unreachable
From 10.1.1.2 icmp_seq=3 Destination Host Unreachable
From 10.1.1.2 icmp_seq=4 Destination Host Unreachable
On machine B we can see the vxlan_sys_4789 tx counter increasing:
[root@sc2-hs2-b2515 ~]# ip -s link show vxlan_sys_4789
76: vxlan_sys_4789: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65470
qdisc noqueue master ovs-system state UNKNOWN mode DEFAULT group
default qlen 1000
link/ether f2:3a:d4:fd:b3:46 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
4200 150 0 8 0 0
On machine A we can see the vxlan_sys_4789 rx counter increasing:
53: vxlan_sys_4789: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 65470
qdisc noqueue ma
ster ovs-system state UNKNOWN mode DEFAULT group default qlen 1000
link/ether 06:4b:21:d8:af:8b brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
4200 150 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 8 0 0
However, even though there is no indication of drops the packets
are not getting over to the test-vxlan bridge
which has the local 10.1.1.3 ip address:
35: test-vxlan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/ether 86:9b:1f:ae:ba:42 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
They're just not seen at all - none of the counters are
increasing. When I remove the local_ip option from
the vxlan tunnels then the ping between the VMs works as expected
which you have shown:
roseg@ubuntu-1604-base:~$ ping 10.1.1.1
PING 10.1.1.1 (10.1.1.1) 56(84) bytes of data.
64 bytes from 10.1.1.1 <http://10.1.1.1>: icmp_seq=1 ttl=64
time=2.04 ms
64 bytes from 10.1.1.1 <http://10.1.1.1>: icmp_seq=2 ttl=64
time=0.366 ms
64 bytes from 10.1.1.1 <http://10.1.1.1>: icmp_seq=3 ttl=64
time=0.332 ms
64 bytes from 10.1.1.1 <http://10.1.1.1>: icmp_seq=4 ttl=64
time=0.335 ms
64 bytes from 10.1.1.1 <http://10.1.1.1>: icmp_seq=5 ttl=64
time=0.367 ms
64 bytes from 10.1.1.1 <http://10.1.1.1>: icmp_seq=6 ttl=64
time=0.319 ms
64 bytes from 10.1.1.1 <http://10.1.1.1>: icmp_seq=7 ttl=64
time=0.272 ms
.
.
.
So now that I have a reproduction I'm debugging why they're not
getting delivered...
I'll continue to update as the investigation continues.
- Greg
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