Hi Chris, I'd expect only 2 dtap too. Do you know if there was a VM migration? Is there anything in vpp 'show log'?
ben > -----Original Message----- > From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Chris King > Sent: mercredi 25 mars 2020 15:00 > To: vpp-dev@lists.fd.io > Subject: [vpp-dev] VPP Interfaces mysteriously went down #azure > > I am running vpp v20.01-release on Ubuntu 18.04 on an Azure VM. I had been > forwarding traffic with VPP for about 5 days and today I noticed that my 2 > main interfaces FailsafeEthernet2 and FailsafeEthernet4) had gone down and > I could not find a reason. I looked at the journalctl logs (which only go > back about 6 hours and the interfaces went down about 18 hours ago), dmesg > logs, and ran a few commands in vppctl to no avail. > > I was able to restore the interfaces just by setting their state back to > 'up'. > > vpp# show int > Name Idx State MTU (L3/IP4/IP6/MPLS) > Counter Count > FailsafeEthernet2 1 up 9000/0/0/0 rx > packets 972 > rx > bytes 72060 > tx > packets 1435428 > tx > bytes 94738701 > drops > 972 > ip4 > 956 > ip6 > 15 > FailsafeEthernet4 2 up 9000/0/0/0 rx > packets 1435458 > rx > bytes 94741057 > drops > 31 > ip4 > 1435430 > ip6 > 28 > > I did, however, notice that I have more Linux network interfaces than I > expected: > ifconfig > dtap2: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST> mtu 1500 > inet6 fe80::20d:3aff:feff:1b82 prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:ff:1b:82 txqueuelen 1000 (Ethernet) > RX packets 2012647 bytes 2878934474 (2.8 GB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 24822 bytes 1839632 (1.8 MB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > dtap3: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST> mtu 1500 > inet6 fe80::20d:3aff:fe84:aa4f prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:84:aa:4f txqueuelen 1000 (Ethernet) > RX packets 0 bytes 0 (0.0 B) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 1692203 bytes 2362194140 (2.3 GB) > TX errors 0 dropped 1096 overruns 0 carrier 0 collisions 0 > > dtap4: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST> mtu 1500 > inet6 fe80::20d:3aff:feff:1b82 prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:ff:1b:82 txqueuelen 1000 (Ethernet) > RX packets 0 bytes 0 (0.0 B) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 1527 bytes 113126 (113.1 KB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > dtap5: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST> mtu 1500 > inet6 fe80::20d:3aff:fe84:aa4f prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:84:aa:4f txqueuelen 1000 (Ethernet) > RX packets 0 bytes 0 (0.0 B) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 7164 bytes 6532230 (6.5 MB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > dtap8: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST> mtu 1500 > inet6 fe80::20d:3aff:feff:1b82 prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:ff:1b:82 txqueuelen 1000 (Ethernet) > RX packets 0 bytes 0 (0.0 B) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 1101 bytes 81606 (81.6 KB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > dtap9: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST> mtu 1500 > inet6 fe80::20d:3aff:fe84:aa4f prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:84:aa:4f txqueuelen 1000 (Ethernet) > RX packets 0 bytes 0 (0.0 B) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 67 bytes 4834 (4.8 KB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 > inet 10.0.9.4 netmask 255.255.255.0 broadcast 10.0.9.255 > inet6 fe80::20d:3aff:feff:1a42 prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:ff:1a:42 txqueuelen 1000 (Ethernet) > RX packets 9860630 bytes 8395557697 (8.3 GB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 7300672 bytes 1643536351 (1.6 GB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > eth1: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST> mtu 1500 > inet 10.0.8.4 netmask 255.255.255.0 broadcast 10.0.8.255 > inet6 fe80::20d:3aff:feff:1b82 prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:ff:1b:82 txqueuelen 1000 (Ethernet) > RX packets 45588 bytes 3379906 (3.3 MB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 2012803 bytes 2878946062 (2.8 GB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > eth2: flags=4675<UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST> mtu 1500 > inet 10.0.10.4 netmask 255.255.255.0 broadcast 10.0.10.255 > inet6 fe80::20d:3aff:fe84:aa4f prefixlen 64 scopeid 0x20<link> > ether 00:0d:3a:84:aa:4f txqueuelen 1000 (Ethernet) > RX packets 1651556 bytes 2368775116 (2.3 GB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 155 bytes 11518 (11.5 KB) > 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 1000 (Local Loopback) > RX packets 439044 bytes 59701416 (59.7 MB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 439044 bytes 59701416 (59.7 MB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > rename11: flags=6723<UP,BROADCAST,RUNNING,ALLMULTI,SLAVE,MULTICAST> mtu > 1500 > ether 00:0d:3a:ff:1b:82 txqueuelen 1000 (Ethernet) > RX packets 2 bytes 180 (180.0 B) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 114841 bytes 163438128 (163.4 MB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > rename12: flags=6723<UP,BROADCAST,RUNNING,ALLMULTI,SLAVE,MULTICAST> mtu > 1500 > ether 00:0d:3a:84:aa:4f txqueuelen 1000 (Ethernet) > RX packets 53463 bytes 76829988 (76.8 MB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 120 bytes 8400 (8.4 KB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > I am surprised there are so many dtap interfaces. I was expecting only 2 > of them. > > Any suggestions for why my interfaces went down or what I can do to > troubleshoot or prevent this? > > Thanks!
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