Hi All, regarding the VF Scale Out Use case, I have noticed that the packet generator does not start to send any traffic flow versus the vDNS. So, debugging the script file I have found :
in the script /opt/v_packetgen_init.sh
at line 28
IPADDR1_MASK=$(ifconfig eth1 | grep "Mask" | awk '{print $4}' | awk -F ":"
'{print $2}')
and at line 32
IPADDR1=$(ifconfig eth1 | grep "inet addr" | tr -s ' ' | cut -d' ' -f3 | cut
-d':' -f2)
parse breaks because ifconfig does not show inet addr and Mask fields.
We suggest to change the script in order to read the ip address and mask from
the file /etc/network/interfaces instead of the output of ifconfig command.
Furthermore, I have found a mismatch for the MTU value for the some interfaces
(in partiucular the br0 and eth1 and tap111):
Here is the output of ifconfig in our case.
br0 Link encap:Ethernet HWaddr 00:c6:7f:dc:2b:f0
inet6 addr: fe80::2c6:7fff:fedc:2bf0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1450 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:828 (828.0 B)
eth0 Link encap:Ethernet HWaddr fa:16:3e:42:aa:f5
inet addr:10.0.200.13 Bcast:10.0.200.255 Mask:255.255.255.0
inet6 addr: fe80::f816:3eff:fe42:aaf5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1450 Metric:1
RX packets:5333 errors:0 dropped:0 overruns:0 frame:0
TX packets:5361 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:547113 (547.1 KB) TX bytes:2016505 (2.0 MB)
eth1 Link encap:Ethernet HWaddr 00:76:54:c1:38:63
inet6 addr: fe80::276:54ff:fec1:3863/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1450 Metric:1
RX packets:6794 errors:0 dropped:0 overruns:0 frame:0
TX packets:478 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:687171 (687.1 KB) TX bytes:21220 (21.2 KB)
eth2 Link encap:Ethernet HWaddr fa:16:3e:0a:af:76
inet addr:10.0.101.13 Bcast:10.255.255.255 Mask:255.0.0.0
inet6 addr: fe80::f816:3eff:fe0a:af76/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1450 Metric:1
RX packets:4213 errors:0 dropped:0 overruns:0 frame:0
TX packets:3394 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:356380 (356.3 KB) TX bytes:487180 (487.1 KB)
eth3 Link encap:Ethernet HWaddr 00:c6:7f:dc:2b:f0
inet6 addr: fe80::2c6:7fff:fedc:2bf0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1450 Metric:1
RX packets:57851 errors:0 dropped:0 overruns:0 frame:0
TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4743778 (4.7 MB) TX bytes:1914 (1.9 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:172 errors:0 dropped:0 overruns:0 frame:0
TX packets:172 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:19454 (19.4 KB) TX bytes:19454 (19.4 KB)
tap111 Link encap:Ethernet HWaddr d2:02:d0:42:cb:5b
inet6 addr: fe80::d002:d0ff:fe42:cb5b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:452 errors:0 dropped:0 overruns:0 frame:0
TX packets:6806 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:18984 (18.9 KB) TX bytes:688283 (688.2 KB)
tappub Link encap:Ethernet HWaddr fe:a7:9d:d3:31:3c
inet6 addr: fe80::fca7:9dff:fed3:313c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:57868 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:4745176 (4.7 MB)
Here there is the /etc/network/interfaces files in our vm:
root@regionone-onap-nf-20190820t083915963z-vpg-001:/opt# more
/etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# Source interfaces
# Please check /etc/network/interfaces.d before changing this file
# as interfaces may have been defined in /etc/network/interfaces.d
# See LP: #1262951
source /etc/network/interfaces.d/*.cfg
auto eth1
iface eth1 inet static
address 192.168.20.16
netmask 255.255.255.0
mtu 1450
auto eth2
iface eth2 inet static
address 10.0.101.12
netmask 255.0.0.0
mtu 1450
Moreover with the command
root@regionone-onap-nf-20190820t083915963z-vpg-001:/opt# brctl show br0
bridge name bridge id STP enabled interfaces
br0 8000.0054afc91d6e no eth1
tap111
I have seen that both the interfaces eth1 and tap111 are bound to bridge br0
but eth1 has mtu set to 1450 (due to Openstack networking issues)
br0 has mtu set to 1450 but tap111 has mtu set to 1500
is it right ? The MTU value has to be changed to 1450?
Thank you
Aniello Paolo Malinconico
Net Reply
Via Cardinal Massaia, 83
10147 - Torino - ITALY
phone: +39 011 29100
[email protected]<mailto:[email protected]>
www.reply.it
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