[Rdo-list] R: Jumbo MTU to instances in Kilo?
Erich Weiler
weiler at soe.ucsc.edu
Thu Oct 8 16:22:56 UTC 2015
Thanks Amedeo,
The bit about the config item in the l3_agent.ini file is new to me - I
couldn't find that in the documentation, or even as a comment in the
file as a config option. If it is a config item as you point out, maybe
it should have a commented section in l3_agent.ini?
Thanks for the insight!
cheers,
erich
On 10/08/2015 03:02 AM, Salvati Amedeo wrote:
> Eric,
>
> also, to set jumbo frames on your env, you have to set mtu from VM to controller:
>
> # echo "dhcp-option-force=26,8900" > /etc/neutron/dnsmasq-neutron.conf
> # openstack-config --set /etc/neutron/dhcp_agent.ini DEFAULT dnsmasq_config_file /etc/neutron/dnsmasq-neutron.conf
> # openstack-config --set /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini agent veth_mtu 8900
> # openstack-config --set /etc/neutron/l3_agent.ini DEFAULT network_device_mtu 9000
> # openstack-config --set /etc/nova/nova.conf DEFAULT network_device_mtu 9000 <--- this on every nova-compute
>
> take a look at l3_agent.ini file, without network_device_mtu every new router will use default mtu at 1500
>
> # ip netns exec qrouter-26f64a08-52ab-4643-b903-9aea6eae047a /bin/bash
> # ip a | grep mtu
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> 69: ha-89546945-ab: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UNKNOWN
> 74: qr-f207f652-da: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UNKNOWN
> 81: qg-ab978cd0-ad: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UNKNOWN
>
> HTH
> Amedeo
>
> -----Messaggio originale-----
> Da: rdo-list-bounces at redhat.com [mailto:rdo-list-bounces at redhat.com] Per conto di Erich Weiler
> Inviato: giovedì 8 ottobre 2015 01:53
> A: Pedro Navarro Perez
> Cc: rdo-list at redhat.com
> Oggetto: Re: [Rdo-list] Jumbo MTU to instances in Kilo?
>
> Actually I was wrong, it WAS on the network node. The virtual router interfaces were not set to MTU=9000. On network node:
>
> [root at os-net-01 ~]# ip netns
> qdhcp-c395cff9-af7b-4456-91e3-3c55e6c2c5f5
> qrouter-0b52e3a6-135c-4481-b286-7c96229f6555
>
> i[root at os-net-01 ~]# ip netns exec
> qrouter-0b52e3a6-135c-4481-b286-7c96229f6555 ifconfig
> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
> inet 127.0.0.1 netmask 255.0.0.0
> inet6 ::1 prefixlen 128 scopeid 0x10<host>
> loop txqueuelen 0 (Local Loopback)
> RX packets 0 bytes 0 (0.0 B)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 0 bytes 0 (0.0 B)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
> qg-fa1e2a28-25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
> inet 10.50.100.1 netmask 255.255.0.0 broadcast 10.50.255.255
> inet6 fe80::f816:3eff:fe6a:608b prefixlen 64 scopeid 0x20<link>
> ether fa:16:3e:6a:60:8b txqueuelen 0 (Ethernet)
> RX packets 34071065 bytes 5046408745 (4.6 GiB)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 442 bytes 51915 (50.6 KiB)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
> qr-51904c89-b8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
> inet 10.100.0.1 netmask 255.255.0.0 broadcast 10.100.255.255
> inet6 fe80::f816:3eff:fe37:eca6 prefixlen 64 scopeid 0x20<link>
> ether fa:16:3e:37:ec:a6 txqueuelen 0 (Ethernet)
> RX packets 702 bytes 75369 (73.6 KiB)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 814 bytes 92259 (90.0 KiB)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
> I can fix it manually:
>
> [root at os-net-01 neutron]# ip netns exec
> qrouter-0b52e3a6-135c-4481-b286-7c96229f6555 ifconfig qg-fa1e2a28-25 mtu
> 9000
> [root at os-net-01 neutron]# ip netns exec
> qrouter-0b52e3a6-135c-4481-b286-7c96229f6555 ifconfig qr-51904c89-b8 mtu
> 9000
> [root at os-net-01 neutron]# ip netns exec
> qrouter-0b52e3a6-135c-4481-b286-7c96229f6555 ifconfig
> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
> inet 127.0.0.1 netmask 255.0.0.0
> inet6 ::1 prefixlen 128 scopeid 0x10<host>
> loop txqueuelen 0 (Local Loopback)
> RX packets 0 bytes 0 (0.0 B)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 0 bytes 0 (0.0 B)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
> qg-fa1e2a28-25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
> inet 10.50.100.1 netmask 255.255.0.0 broadcast 10.50.255.255
> inet6 fe80::f816:3eff:fe6a:608b prefixlen 64 scopeid 0x20<link>
> ether fa:16:3e:6a:60:8b txqueuelen 0 (Ethernet)
> RX packets 34086053 bytes 5048637833 (4.7 GiB)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 442 bytes 51915 (50.6 KiB)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
> qr-51904c89-b8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
> inet 10.100.0.1 netmask 255.255.0.0 broadcast 10.100.255.255
> inet6 fe80::f816:3eff:fe37:eca6 prefixlen 64 scopeid 0x20<link>
> ether fa:16:3e:37:ec:a6 txqueuelen 0 (Ethernet)
> RX packets 702 bytes 75369 (73.6 KiB)
> RX errors 0 dropped 0 overruns 0 frame 0
> TX packets 814 bytes 92259 (90.0 KiB)
> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>
> And then I have a jumbo clean path everywhere! All is good then.
> But... How to set this in a config file or something so I don't have to do it manually?
>
> I found this bug report:
>
> https://bugs.launchpad.net/neutron/+bug/1311097
>
> Anyone know if that bug is still out there? Or how can I set virtual router interfaces MTU by default when I create the router?
>
> cheers,
> erich
>
> On 10/07/2015 04:35 PM, Erich Weiler wrote:
>> Actually I think I'm closer - on the compute nodes, I set this in
>> nova.conf:
>>
>> network_device_mtu=9000
>>
>> even though there was a big note above it that said not to use it
>> because this option was deprecated. But after setting that option,
>> and restarting nova and openvswitch, br-int, my tap device and my qvb
>> device all got set to MTU=9000. So I'm closer! But still one item is
>> blocking me. I show this tracepath from my controller node direct to
>> the VM (which is on a compute node on the local network):
>>
>> # tracepath 10.50.100.4
>> 1?: [LOCALHOST] pmtu 9000
>> 1: 10.50.100.4 0.682ms
>> 1: 10.50.100.4 0.241ms
>> 2: 10.50.100.4 0.297ms pmtu
>> 1500
>> 2: 10.50.100.4 1.664ms reached
>>
>> 10.50.100.4 is the VM. It looks like the path is jumbo clean up until
>> that third hop. But the thing is, I don't know what the third hop is.
>> ;)
>>
>> On my compute node I still see some stuff with MTU=1500, but I'm not
>> sure if one of those is blocking me:
>>
>> # ifconfig
>> br-enp3s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>> inet6 fe80::ec4:7aff:fe58:423e prefixlen 64 scopeid 0x20<link>
>> ether 0c:c4:7a:58:42:3e txqueuelen 0 (Ethernet)
>> RX packets 2401498 bytes 359284253 (342.6 MiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 30 bytes 1572 (1.5 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> br-int: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>> inet6 fe80::64dc:94ff:fe35:db4c prefixlen 64 scopeid 0x20<link>
>> ether 66:dc:94:35:db:4c txqueuelen 0 (Ethernet)
>> RX packets 133 bytes 12934 (12.6 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 8 bytes 648 (648.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> enp3s0f0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 9000
>> inet6 fe80::ec4:7aff:fe58:423e prefixlen 64 scopeid 0x20<link>
>> ether 0c:c4:7a:58:42:3e txqueuelen 1000 (Ethernet)
>> RX packets 165957142 bytes 20333410092 (18.9 GiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 23299881 bytes 5950708819 (5.5 GiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> enp3s0f0.50: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>> inet 10.50.1.236 netmask 255.255.0.0 broadcast 10.50.255.255
>> inet6 fe80::ec4:7aff:fe58:423e prefixlen 64 scopeid 0x20<link>
>> ether 0c:c4:7a:58:42:3e txqueuelen 0 (Ethernet)
>> RX packets 6014767 bytes 813880745 (776.1 MiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 79301 bytes 19052451 (18.1 MiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
>> inet 127.0.0.1 netmask 255.0.0.0
>> inet6 ::1 prefixlen 128 scopeid 0x10<host>
>> loop txqueuelen 0 (Local Loopback)
>> RX packets 22462729 bytes 1202484822 (1.1 GiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 22462729 bytes 1202484822 (1.1 GiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> qbr922bd9f5-bb: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>> inet6 fe80::4c1a:55ff:feba:14c3 prefixlen 64 scopeid 0x20<link>
>> ether 56:a6:a6:db:83:c4 txqueuelen 0 (Ethernet)
>> RX packets 16 bytes 1520 (1.4 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 8 bytes 648 (648.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> qbrf42ea01f-fe: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>> inet6 fe80::f484:f1ff:fe53:fb2e prefixlen 64 scopeid 0x20<link>
>> ether c2:a6:d8:25:63:ea txqueuelen 0 (Ethernet)
>> RX packets 15 bytes 1456 (1.4 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 8 bytes 648 (648.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> qvb922bd9f5-bb: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>
>> mtu
>> 9000
>> inet6 fe80::54a6:a6ff:fedb:83c4 prefixlen 64 scopeid 0x20<link>
>> ether 56:a6:a6:db:83:c4 txqueuelen 1000 (Ethernet)
>> RX packets 86 bytes 9610 (9.3 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 133 bytes 12767 (12.4 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> qvbf42ea01f-fe: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>
>> mtu
>> 1500
>> inet6 fe80::c0a6:d8ff:fe25:63ea prefixlen 64 scopeid 0x20<link>
>> ether c2:a6:d8:25:63:ea txqueuelen 1000 (Ethernet)
>> RX packets 377 bytes 57664 (56.3 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 333 bytes 38765 (37.8 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> qvo922bd9f5-bb: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>
>> mtu
>> 9000
>> inet6 fe80::b44a:bff:fe72:aaea prefixlen 64 scopeid 0x20<link>
>> ether b6:4a:0b:72:aa:ea txqueuelen 1000 (Ethernet)
>> RX packets 133 bytes 12767 (12.4 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 86 bytes 9610 (9.3 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> qvof42ea01f-fe: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>
>> mtu
>> 1500
>> inet6 fe80::f03e:35ff:fefe:e52 prefixlen 64 scopeid 0x20<link>
>> ether f2:3e:35:fe:0e:52 txqueuelen 1000 (Ethernet)
>> RX packets 333 bytes 38765 (37.8 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 377 bytes 57664 (56.3 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> tap922bd9f5-bb: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>> inet6 fe80::fc16:3eff:fefa:9945 prefixlen 64 scopeid 0x20<link>
>> ether fe:16:3e:fa:99:45 txqueuelen 500 (Ethernet)
>> RX packets 118 bytes 11561 (11.2 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 95 bytes 10316 (10.0 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>> inet 192.168.122.1 netmask 255.255.255.0 broadcast
>> 192.168.122.255
>> ether 52:54:00:c4:75:9f txqueuelen 0 (Ethernet)
>> RX packets 0 bytes 0 (0.0 B)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 0 bytes 0 (0.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> My network node has all interfaces set to MTU=9000. I thought maybe the
>> bottleneck might be there but I don't think it is. Here's ifconfig
>> from my network node:
>>
>> # ifconfig
>> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
>> inet 127.0.0.1 netmask 255.0.0.0
>> inet6 ::1 prefixlen 128 scopeid 0x10<host>
>> loop txqueuelen 0 (Local Loopback)
>> RX packets 2042 bytes 238727 (233.1 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 2042 bytes 238727 (233.1 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> p1p2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>> inet6 fe80::207:43ff:fe10:deb8 prefixlen 64 scopeid 0x20<link>
>> ether 00:07:43:10:de:b8 txqueuelen 1000 (Ethernet)
>> RX packets 2156053308 bytes 325330839639 (302.9 GiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 223004 bytes 24769304 (23.6 MiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>> device interrupt 72
>>
>> p2p1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>> inet 10.50.1.51 netmask 255.255.0.0 broadcast 10.50.255.255
>> inet6 fe80::260:ddff:fe44:2aea prefixlen 64 scopeid 0x20<link>
>> ether 00:60:dd:44:2a:ea txqueuelen 1000 (Ethernet)
>> RX packets 49352916 bytes 3501547231 (3.2 GiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 18876911 bytes 3768900461 (3.5 GiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> p2p2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>> inet6 fe80::260:ddff:fe44:2aeb prefixlen 64 scopeid 0x20<link>
>> ether 00:60:dd:44:2a:eb txqueuelen 1000 (Ethernet)
>> RX packets 2491224974 bytes 348058319500 (324.1 GiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 1597 bytes 204525 (199.7 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> Any way I can figure out what the third hop is from my tracepath?
>>
>> Thanks as always for the sage advice!
>>
>> -erich
>>
>> On 10/07/2015 09:57 AM, Erich Weiler wrote:
>>> Yeah, I made the changes and then recreated all the networks. For
>>> some reason br-int and the individual virtual instance interfaces on
>>> the compute node still show 1500 byte frames.
>>>
>>> Has anyone else configured jumbo frames in a Kilo environment? Or
>>> maybe I'm just an outlier... ;)
>>>
>>> -erich
>>>
>>> On 10/07/2015 01:46 AM, Pedro Navarro Perez wrote:
>>>> Hi Erich,
>>>>
>>>> did you recreate the neutron networks after the configuration changes?
>>>>
>>>> Pedro Navarro Pérez
>>>> OpenStack product specialist
>>>> Red Hat Iberia
>>>> Passeig de Gràcia 120,
>>>> 08008 Barcelona
>>>> Spain
>>>> M +34 639 642 379
>>>> E pnavarro at redhat.com
>>>>
>>>> ----- Original Message -----
>>>> From: "Erich Weiler" <weiler at soe.ucsc.edu>
>>>> To: rdo-list at redhat.com
>>>> Sent: Wednesday, 7 October, 2015 2:34:28 AM
>>>> Subject: [Rdo-list] Jumbo MTU to instances in Kilo?
>>>>
>>>> Hi Y'all,
>>>>
>>>> I know someone must have figured this one out, but I can't seem to
>>>> get
>>>> 9000 byte MTUs working. I have it set in plugin.ini, etc, my nodes
>>>> have
>>>> MTU=9000 on their interfaces, so does the network node. dnsmasq
>>>> also is configured to set MTU=9000 on instances, which works. But I
>>>> still can't ping with large packets to my instance:
>>>>
>>>> [weiler at stacker ~]$ ping 10.50.100.2 PING 10.50.100.2 (10.50.100.2)
>>>> 56(84) bytes of data.
>>>> 64 bytes from 10.50.100.2: icmp_seq=1 ttl=63 time=2.95 ms
>>>> 64 bytes from 10.50.100.2: icmp_seq=2 ttl=63 time=1.14 ms
>>>> 64 bytes from 10.50.100.2: icmp_seq=3 ttl=63 time=0.661 ms
>>>>
>>>> That works fine. This however doesn't work:
>>>>
>>>> [root at stacker ~]# ping -M do -s 8000 10.50.100.2 PING 10.50.100.2
>>>> (10.50.100.2) 8000(8028) bytes of data.
>>>> From 10.50.100.2 icmp_seq=1 Frag needed and DF set (mtu = 1500)
>>>> ping: local error: Message too long, mtu=1500
>>>> ping: local error: Message too long, mtu=1500
>>>> ping: local error: Message too long, mtu=1500
>>>> ping: local error: Message too long, mtu=1500
>>>>
>>>> It looks like somehow the br-int interface for OVS isn't set at
>>>> 9000, but I can't figure out how to do that...
>>>>
>>>> Here's ifconfig on my compute node:
>>>>
>>>> br-enp3s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>>>> inet6 fe80::ec4:7aff:fe58:423e prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether 0c:c4:7a:58:42:3e txqueuelen 0 (Ethernet)
>>>> RX packets 2401432 bytes 359276713 (342.6 MiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 30 bytes 1572 (1.5 KiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> br-int: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>>>> inet6 fe80::64dc:94ff:fe35:db4c prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether 66:dc:94:35:db:4c txqueuelen 0 (Ethernet)
>>>> RX packets 69 bytes 6866 (6.7 KiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 8 bytes 648 (648.0 B)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> enp3s0f0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 9000
>>>> inet6 fe80::ec4:7aff:fe58:423e prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether 0c:c4:7a:58:42:3e txqueuelen 1000 (Ethernet)
>>>> RX packets 130174458 bytes 15334807929 (14.2 GiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 22919305 bytes 5859090420 (5.4 GiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> enp3s0f0.50: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
>>>> inet 10.50.1.236 netmask 255.255.0.0 broadcast 10.50.255.255
>>>> inet6 fe80::ec4:7aff:fe58:423e prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether 0c:c4:7a:58:42:3e txqueuelen 0 (Ethernet)
>>>> RX packets 38429352 bytes 5152853436 (4.7 GiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 419842 bytes 101161981 (96.4 MiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
>>>> inet 127.0.0.1 netmask 255.0.0.0
>>>> inet6 ::1 prefixlen 128 scopeid 0x10<host>
>>>> loop txqueuelen 0 (Local Loopback)
>>>> RX packets 22141566 bytes 1185622090 (1.1 GiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 22141566 bytes 1185622090 (1.1 GiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> qbr247da3ed-a4: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>>>> inet6 fe80::5c8f:c0ff:fe79:bc11 prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether b6:1f:54:3f:3d:48 txqueuelen 0 (Ethernet)
>>>> RX packets 16 bytes 1472 (1.4 KiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 8 bytes 648 (648.0 B)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> qbrf42ea01f-fe: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>>>> inet6 fe80::f484:f1ff:fe53:fb2e prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether c2:a6:d8:25:63:ea txqueuelen 0 (Ethernet)
>>>> RX packets 15 bytes 1456 (1.4 KiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 8 bytes 648 (648.0 B)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> qvb247da3ed-a4: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>
>>>> mtu 1500
>>>> inet6 fe80::b41f:54ff:fe3f:3d48 prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether b6:1f:54:3f:3d:48 txqueuelen 1000 (Ethernet)
>>>> RX packets 247 bytes 28323 (27.6 KiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 233 bytes 25355 (24.7 KiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> qvbf42ea01f-fe: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>
>>>> mtu 1500
>>>> inet6 fe80::c0a6:d8ff:fe25:63ea prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether c2:a6:d8:25:63:ea txqueuelen 1000 (Ethernet)
>>>> RX packets 377 bytes 57664 (56.3 KiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 333 bytes 38765 (37.8 KiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> qvo247da3ed-a4: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>
>>>> mtu 1500
>>>> inet6 fe80::dcfa:f1ff:fe03:ee88 prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether de:fa:f1:03:ee:88 txqueuelen 1000 (Ethernet)
>>>> RX packets 233 bytes 25355 (24.7 KiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 247 bytes 28323 (27.6 KiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> qvof42ea01f-fe: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST>
>>>> mtu 1500
>>>> inet6 fe80::f03e:35ff:fefe:e52 prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether f2:3e:35:fe:0e:52 txqueuelen 1000 (Ethernet)
>>>> RX packets 333 bytes 38765 (37.8 KiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 377 bytes 57664 (56.3 KiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> tap247da3ed-a4: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>>>> inet6 fe80::fc16:3eff:fede:5eea prefixlen 64 scopeid
>>>> 0x20<link>
>>>> ether fe:16:3e:de:5e:ea txqueuelen 500 (Ethernet)
>>>> RX packets 219 bytes 24239 (23.6 KiB)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 224 bytes 26661 (26.0 KiB)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>>>> inet 192.168.122.1 netmask 255.255.255.0 broadcast
>>>> 192.168.122.255
>>>> ether 52:54:00:c4:75:9f txqueuelen 0 (Ethernet)
>>>> RX packets 0 bytes 0 (0.0 B)
>>>> RX errors 0 dropped 0 overruns 0 frame 0
>>>> TX packets 0 bytes 0 (0.0 B)
>>>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>>>
>>>> This is on RHEL 7.1. Any obvious way I can get all the intermediate
>>>> bridges to MTU=9000? I've RTFM'd and googled to no avail...
>>>>
>>>> Here's the ovs-vsctl outout:
>>>>
>>>> [root at node-136 ~]# ovs-vsctl show
>>>> 6f5a5f00-59e2-4420-aeaf-7ad464ead232
>>>> Bridge br-int
>>>> fail_mode: secure
>>>> Port br-int
>>>> Interface br-int
>>>> type: internal
>>>> Port "qvo247da3ed-a4"
>>>> tag: 1
>>>> Interface "qvo247da3ed-a4"
>>>> Port "int-br-eth1"
>>>> Interface "int-br-eth1"
>>>> Port "int-br-enp3s0f0"
>>>> Interface "int-br-enp3s0f0"
>>>> type: patch
>>>> options: {peer="phy-br-enp3s0f0"}
>>>> Bridge "br-enp3s0f0"
>>>> Port "enp3s0f0"
>>>> Interface "enp3s0f0"
>>>> Port "br-enp3s0f0"
>>>> Interface "br-enp3s0f0"
>>>> type: internal
>>>> Port "phy-br-enp3s0f0"
>>>> Interface "phy-br-enp3s0f0"
>>>> type: patch
>>>> options: {peer="int-br-enp3s0f0"}
>>>> ovs_version: "2.3.1"
>>>>
>>>> Many thanks if anyone has any information on this topic! Or can
>>>> point me to some documentation I missed...
>>>>
>>>> Thanks,
>>>> erich
>>>>
>>>> _______________________________________________
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>>>> https://www.redhat.com/mailman/listinfo/rdo-list
>>>>
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>>>>
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