Hi,
Today something strange happened on one of my Soekris 5501 boxes,
it runs OpenBSD 4.1-stable. The box is connected with a cross-over cable
to another machine via the vr1 interface (the box has 4 vr interfaces).
Problem: After having rebooted the machine at the other end of the cable
multiple times, the Soekris box suddenly stopped receiving packets on
the vr1 interface.
After playing around with ping and tcpdump on both sides I found out
that the vr1 interface allowed me to send packets, but incoming packets
did no show up in tcpdump, even though the LED on the interface was
flickering.
I changed the cable, connected the vr1 of the Soekris to another
machine, then to a switch port with lots of broadcast traffic etc.etc.
nothing helped, ingress traffic on vr1 did not show up in tcpdump.
Solution: Finally, immediatelly after doing "ifconfig vr1 down &&
ifconfig vr1 up" everything worked again as normal.
The link on vr1 is currently only used to do SSH between the two
machines, so this is really a low traffic link. On the other hand,
vr0,vr2,vr3 are heavily used (BGP sessions etc., the Soekris is at the
border of my AS). btw: the machine at the other end of the cable is a
Soekris 5501 as well. Had to reboot it to perform a BIOS upgrade.
No suspicious output in dmesg.
Any ideas on how I could further track down the problem?
Thanks,
Christian
The vr interfaces in dmesg:
vr0 at pci0 dev 6 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 11,
address 00:00:24:c8:de:68
ukphy0 at vr0 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI
0x004063, model 0x0034
vr1 at pci0 dev 7 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 5,
address 00:00:24:c8:de:69
ukphy1 at vr1 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI
0x004063, model 0x0034
vr2 at pci0 dev 8 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 9,
address 00:00:24:c8:de:6a
ukphy2 at vr2 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI
0x004063, model 0x0034
vr3 at pci0 dev 9 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 12,
address 00:00:24:c8:de:6b
ukphy3 at vr3 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI
0x004063, model 0x0034
# ifconfig vr1
vr1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 00:00:24:c8:de:69
media: Ethernet autoselect (100baseTX full-duplex)
status: active
inet XX.XX.XX.XX netmask 0xffffffe0 broadcast XX.XX.XX.YY
inet6 fe80::200:24ff:fec8:de69%vr1 prefixlen 64 scopeid 0x2
| Fred . | Please add ZFS support (from GPL sources) |
| Kristen Carlson Accardi | Re: PCIe Hotplug: NFG unless I boot with card already inserted. |
| Linus Torvalds | Re: [GIT]: Networking |
| Chuck Ebbert | Why do so many machines need "noapic"? |
git: | |
| Petr Baudis | Re: Cogito: cg-clone doesn't like packed tag objects |
| Andreas Ericsson | Re: [PATCH] git-merge: add option --no-ff |
| Junio C Hamano | GIT 0.99.6 |
| Wayne Scott | git-diff-tree rename detection bug |
| Unix Fan | Re: Vulnerability Note VU#800113 - Multiple DNS implementations vulnerable to cach... |
| Edd Barrett | Iwi, wireless bad behavior |
| jose thomas | Resume - Mumps Developer |
| Girish Venkatachalam | Ethernet jumbo frames? |
| der Mouse | Re: mjf-devfs2 branch |
| Ian Zagorskih | POSIX timer_settime() dosn't set timer in some cases (lost accuracy) |
| Christos Zoulas | Re: Melting down your network [Subject changed] |
| Gregory McGarry | Re: Lock benchmarks |
