Hi I have setup openbsd routers running dual homed with another pair of
upstream routers announcing a default route.
Each router has two interfaces, egress and ingress.
r1 - openbsd1
r2 - openbsd2
r3 - upstream1
r4 - upstream2
vio0 is the external interface uses a /28 network to talk ibgp with two
upstream routers.
vio1 is the internal interface that also uses a /28 network to interconnect
both openbsd routers.
Each router has its own private AS, talking with both isp peers via the
vio0 (there is only one remote AS) to get a default-route.
The two openbsd routers are also connected via ibgp via the vio1 interface.
BGP works as expected, yet there is a behaviour i find strange.
By setting vio0 down on r1, shouldn't the local route be removed?
Although r2 announces a valid default-route, the local route in fib is
preferred rendering that network unreachable.
Both openbsd routers are vms on top of kvm amd6 -current snapshot 14 Jan
Cheers,
Pedro Caetano
r1 dmesg below:
OpenBSD 5.7-beta (GENERIC) #719: Wed Jan 14 18:59:03 MST 2015
[email protected]:/usr/src/sys/arch/amd64/compile/GENERIC
real mem = 117428224 (111MB)
avail mem = 110616576 (105MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0x7fffec0 (10 entries)
bios0: vendor Seabios version "0.5.1" date 01/01/2007
bios0: Red Hat KVM
acpi0 at bios0: rev 0
acpi0: sleep states S5
acpi0: tables DSDT FACP SSDT APIC SSDT
acpi0: wakeup devices
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD Opteron 240 (Gen 1 Class Opteron), 1867.13 MHz
cpu0:
FPU,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,x2APIC,HV
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB
64b/line 16-way L2 cache
cpu0: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 1000MHz
ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 11, 24 pins
acpiprt0 at acpi0: bus 0 (PCI0)
acpicpu0 at acpi0
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02
pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00
pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel
0 wired to compatibility, channel 1 wired to compatibility
atapiscsi0 at pciide0 channel 0 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <QEMU, QEMU DVD-ROM, 0.12> ATAPI 5/cdrom
removable
cd0(pciide0:0:0): using PIO mode 0
pciide0: channel 1 disabled (no drives)
uhci0 at pci0 dev 1 function 2 "Intel 82371SB USB" rev 0x01: apic 0 int 11
piixpm0 at pci0 dev 1 function 3 "Intel 82371AB Power" rev 0x03: apic 0 int
9
iic0 at piixpm0
iic0: addr 0x18 00=00 01=00 02=00 03=00 04=00 05=00 06=00 07=00 08=00 words
00=0000 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=0000
iic0: addr 0x1a 00=00 01=00 02=00 03=00 04=00 05=00 06=00 07=00 08=00 words
00=0000 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=0000
iic0: addr 0x29 00=00 01=00 02=00 03=00 04=00 05=00 06=00 07=00 08=00 words
00=0000 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=0000
iic0: addr 0x2b 00=00 01=00 02=00 03=00 04=00 05=00 06=00 07=00 08=00 words
00=0000 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=0000
iic0: addr 0x4c 00=00 01=00 02=00 03=00 04=00 05=00 06=00 07=00 08=00 words
00=0000 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=0000
iic0: addr 0x4e 00=00 01=00 02=00 03=00 04=00 05=00 06=00 07=00 08=00 words
00=0000 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=0000
vga1 at pci0 dev 2 function 0 "Cirrus Logic CL-GD5446" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
virtio0 at pci0 dev 3 function 0 "Qumranet Virtio Network" rev 0x00: Virtio
Network Device
vio0 at virtio0: address 52:54:00:8f:e4:7f
virtio0: apic 0 int 11
virtio1 at pci0 dev 4 function 0 "Qumranet Virtio Network" rev 0x00: Virtio
Network Device
vio1 at virtio1: address 52:54:00:8c:ba:45
virtio1: apic 0 int 11
virtio2 at pci0 dev 5 function 0 "Qumranet Virtio Storage" rev 0x00: Virtio
Block Device
vioblk0 at virtio2
scsibus2 at vioblk0: 2 targets
sd0 at scsibus2 targ 0 lun 0: <VirtIO, Block Device, > SCSI3 0/direct fixed
sd0: 1024MB, 512 bytes/sector, 2097152 sectors
virtio2: apic 0 int 10
virtio3 at pci0 dev 6 function 0 "Qumranet Virtio Memory" rev 0x00: Virtio
Memory Balloon Device
viomb0 at virtio3
virtio3: apic 0 int 10
virtio4 at pci0 dev 7 function 0 "Qumranet Virtio Network" rev 0x00: Virtio
Network Device
vio2 at virtio4: address 52:54:00:70:e5:fc
virtio4: apic 0 int 11
isa0 at pcib0
isadma0 at isa0
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: density unknown
fd1 at fdc0 drive 1: density unknown
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com0: probed fifo depth: 0 bytes
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
usb0 at uhci0: USB revision 1.0
uhub0 at usb0 "Intel UHCI root hub" rev 1.00/1.00 addr 1
nvram: invalid checksum
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (a20048de489bec90.a) swap on sd0b dump on sd0b
