BGPD route update loop between iBGP peers after 6.6->6.7 upgrade

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BGPD route update loop between iBGP peers after 6.6->6.7 upgrade

Esa Kuusisto
Hi

I upgraded today two openbsd routers with openbgpd from 6.6 -> 6.7. Upgrade
was done using sysupgrade. Router1 and Router2 have two ebgp peers, two
iBGP peers to local switches and one iBGP peer between Router1 <->Router2.
Router2  was first upgraded and no problems there. After Router1 upgrade I
saw high cpu utilization from bgpd. From logs I saw that both Router1 and
Router2 saw two networks being updated between each other and withdraw
multiple times every second:

May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
(PeerRouter2_v4) AS43XXX: withdraw 149.63.0.0/17
May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
(PeerRouter2_v4) AS43XXX: withdraw 149.63.59.0/24
May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
(PeerRouter2_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.252
May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
(PeerRouter2_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.252

May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
(PeerRouter1_v4) AS43XXX: withdraw 149.63.0.0/17
May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
(PeerRouter1_v4) AS43XXX: withdraw 149.63.59.0/24
May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
(PeerRouter1_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.253
May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
(PeerRouter1_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.253

Router1
Neighbor                   AS    MsgRcvd    MsgSent  OutQ Up/Down
 State/PrfRcvd
PeerRouter2_v4          43XXX    5564646    5639942     0 00:47:19 810647
PeerRouter2_v6          43XXX      52294      82663     0 00:47:19  85391

Router2
Neighbor                   AS    MsgRcvd    MsgSent  OutQ Up/Down
 State/PrfRcvd
PeerRouter1_v4          43XXX    6039364    6037168     0 00:47:34 810654
PeerRouter1_v6          43XXX     421226     417520     0 00:47:34  87247

I do not have any relation to those 149.63/17 and 149.63.59/24 networks.

For debug purposes I did filter those announcements and problem was fixed.
I did remove filter to test if the announcement loop was gone and it was
for now.
No configuration changes to bgpd.conf before or after upgrade (except that
filter after the high cpu load reason was found).

Br
-Esa Kuusisto

dmesg:
OpenBSD 6.7 (RAMDISK_CD) #177: Thu May  7 11:19:02 MDT 2020
    [hidden email]:/usr/src/sys/arch/amd64/compile/RAMDISK_CD
real mem = 4278124544 (4079MB)
avail mem = 4144447488 (3952MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (242 entries)
bios0: vendor Phoenix Technologies LTD version "6.00" date 09/19/2018
bios0: VMware, Inc. VMware Virtual Platform
acpi0 at bios0: ACPI 4.0
acpi0: tables DSDT FACP BOOT APIC MCFG SRAT HPET WAET
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.91 MHz, 06-3a-00
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: apic clock running at 65MHz
cpu at mainbus0: not configured
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 24 pins
acpiprt0 at acpi0: bus 0 (PCI0)
acpicpu at acpi0 not configured
"PNP0A03" at acpi0 not configured
acpicmos0 at acpi0
"PNP0A05" at acpi0 not configured
"ACPI0003" at acpi0 not configured
cpu0: using IvyBridge MDS workaround
pvbus0 at mainbus0: VMware
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
pci1 at ppb0 bus 1
"Intel 82371AB PIIX4 ISA" rev 0x08 at pci0 dev 7 function 0 not configured
pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA, channel
0 configured to compatibility, channel 1 configured to compatibility
pciide0: channel 0 disabled (no drives)
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
"Intel 82371AB Power" rev 0x08 at pci0 dev 7 function 3 not configured
"VMware VMCI" rev 0x10 at pci0 dev 7 function 7 not configured
vga1 at pci0 dev 15 function 0 "VMware SVGA II" rev 0x00
vga1: aperture needed
wsdisplay1 at vga1 mux 1: console (80x25, vt100 emulation)
mpi0 at pci0 dev 16 function 0 "Symbios Logic 53c1030" rev 0x01: apic 2 int
17
mpi0: 0, firmware 1.3.41.32
scsibus1 at mpi0: 16 targets, initiator 7
sd0 at scsibus1 targ 0 lun 0: <VMware, Virtual disk, 2.0>
sd0: 8192MB, 512 bytes/sector, 16777216 sectors, thin
mpi0: target 0 Sync at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
ppb1 at pci0 dev 17 function 0 "VMware PCI" rev 0x02
pci2 at ppb1 bus 2
ppb2 at pci0 dev 21 function 0 "VMware PCIE" rev 0x01
pci3 at ppb2 bus 3
vmx0 at pci3 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 18,
address 00:50:56:8c:ea:36
ppb3 at pci0 dev 21 function 1 "VMware PCIE" rev 0x01
pci4 at ppb3 bus 4
ppb4 at pci0 dev 21 function 2 "VMware PCIE" rev 0x01
pci5 at ppb4 bus 5
ppb5 at pci0 dev 21 function 3 "VMware PCIE" rev 0x01
pci6 at ppb5 bus 6
ppb6 at pci0 dev 21 function 4 "VMware PCIE" rev 0x01
pci7 at ppb6 bus 7
ppb7 at pci0 dev 21 function 5 "VMware PCIE" rev 0x01
pci8 at ppb7 bus 8
ppb8 at pci0 dev 21 function 6 "VMware PCIE" rev 0x01
pci9 at ppb8 bus 9
ppb9 at pci0 dev 21 function 7 "VMware PCIE" rev 0x01
pci10 at ppb9 bus 10
ppb10 at pci0 dev 22 function 0 "VMware PCIE" rev 0x01
pci11 at ppb10 bus 11
vmx1 at pci11 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 19,
address 00:50:56:8c:13:1f
ppb11 at pci0 dev 22 function 1 "VMware PCIE" rev 0x01
pci12 at ppb11 bus 12
ppb12 at pci0 dev 22 function 2 "VMware PCIE" rev 0x01
pci13 at ppb12 bus 13
ppb13 at pci0 dev 22 function 3 "VMware PCIE" rev 0x01
pci14 at ppb13 bus 14
ppb14 at pci0 dev 22 function 4 "VMware PCIE" rev 0x01
pci15 at ppb14 bus 15
ppb15 at pci0 dev 22 function 5 "VMware PCIE" rev 0x01
pci16 at ppb15 bus 16
ppb16 at pci0 dev 22 function 6 "VMware PCIE" rev 0x01
pci17 at ppb16 bus 17
ppb17 at pci0 dev 22 function 7 "VMware PCIE" rev 0x01
pci18 at ppb17 bus 18
ppb18 at pci0 dev 23 function 0 "VMware PCIE" rev 0x01
pci19 at ppb18 bus 19
vmx2 at pci19 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 16,
address 00:50:56:8c:46:34
ppb19 at pci0 dev 23 function 1 "VMware PCIE" rev 0x01
pci20 at ppb19 bus 20
ppb20 at pci0 dev 23 function 2 "VMware PCIE" rev 0x01
pci21 at ppb20 bus 21
ppb21 at pci0 dev 23 function 3 "VMware PCIE" rev 0x01
pci22 at ppb21 bus 22
ppb22 at pci0 dev 23 function 4 "VMware PCIE" rev 0x01
pci23 at ppb22 bus 23
ppb23 at pci0 dev 23 function 5 "VMware PCIE" rev 0x01
pci24 at ppb23 bus 24
ppb24 at pci0 dev 23 function 6 "VMware PCIE" rev 0x01
pci25 at ppb24 bus 25
ppb25 at pci0 dev 23 function 7 "VMware PCIE" rev 0x01
pci26 at ppb25 bus 26
ppb26 at pci0 dev 24 function 0 "VMware PCIE" rev 0x01
pci27 at ppb26 bus 27
ppb27 at pci0 dev 24 function 1 "VMware PCIE" rev 0x01
pci28 at ppb27 bus 28
ppb28 at pci0 dev 24 function 2 "VMware PCIE" rev 0x01
pci29 at ppb28 bus 29
ppb29 at pci0 dev 24 function 3 "VMware PCIE" rev 0x01
pci30 at ppb29 bus 30
ppb30 at pci0 dev 24 function 4 "VMware PCIE" rev 0x01
pci31 at ppb30 bus 31
ppb31 at pci0 dev 24 function 5 "VMware PCIE" rev 0x01
pci32 at ppb31 bus 32
ppb32 at pci0 dev 24 function 6 "VMware PCIE" rev 0x01
pci33 at ppb32 bus 33
ppb33 at pci0 dev 24 function 7 "VMware PCIE" rev 0x01
pci34 at ppb33 bus 34
isa0 at mainbus0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay1
softraid0 at root
scsibus2 at softraid0: 256 targets
root on rd0a swap on rd0b dump on rd0b
WARNING: CHECK AND RESET THE DATE!
syncing disks... done
rebooting...
OpenBSD 6.7 (GENERIC.MP) #182: Thu May  7 11:11:58 MDT 2020
    [hidden email]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 4278124544 (4079MB)
avail mem = 4135862272 (3944MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (242 entries)
bios0: vendor Phoenix Technologies LTD version "6.00" date 09/19/2018
bios0: VMware, Inc. VMware Virtual Platform
acpi0 at bios0: ACPI 4.0
acpi0: sleep states S0 S1 S4 S5
acpi0: tables DSDT FACP BOOT APIC MCFG SRAT HPET WAET
acpi0: wakeup devices PCI0(S3) USB_(S1) P2P0(S3) S1F0(S3) S2F0(S3) S8F0(S3)
S16F(S3) S17F(S3) S18F(S3) S22F(S3) S23F(S3) S24F(S3) S25F(S3) PE40(S3)
S1F0(S3) PE50(S3) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.91 MHz, 06-3a-00
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 65MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.86 MHz, 06-3a-00
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 24 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xf0000000, bus 0-127
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpicpu0 at acpi0: C1(@1 halt!)
acpicpu1 at acpi0: C1(@1 halt!)
acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
acpicmos0 at acpi0
"PNP0A05" at acpi0 not configured
acpiac0 at acpi0: AC unit online
cpu0: using IvyBridge MDS workaround
pvbus0 at mainbus0: VMware
vmt0 at pvbus0
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
pci1 at ppb0 bus 1
pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x08
pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA, channel
0 configured to compatibility, channel 1 configured to compatibility
pciide0: channel 0 disabled (no drives)
atapiscsi0 at pciide0 channel 1 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
piixpm0 at pci0 dev 7 function 3 "Intel 82371AB Power" rev 0x08: SMBus
disabled
"VMware VMCI" rev 0x10 at pci0 dev 7 function 7 not configured
vga1 at pci0 dev 15 function 0 "VMware SVGA II" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
mpi0 at pci0 dev 16 function 0 "Symbios Logic 53c1030" rev 0x01: apic 2 int
17
mpi0: 0, firmware 1.3.41.32
scsibus2 at mpi0: 16 targets, initiator 7
sd0 at scsibus2 targ 0 lun 0: <VMware, Virtual disk, 2.0>
sd0: 8192MB, 512 bytes/sector, 16777216 sectors, thin
mpi0: target 0 Sync at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
ppb1 at pci0 dev 17 function 0 "VMware PCI" rev 0x02
pci2 at ppb1 bus 2
ppb2 at pci0 dev 21 function 0 "VMware PCIE" rev 0x01
pci3 at ppb2 bus 3
vmx0 at pci3 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 18,
address 00:50:56:8c:ea:36
ppb3 at pci0 dev 21 function 1 "VMware PCIE" rev 0x01
pci4 at ppb3 bus 4
ppb4 at pci0 dev 21 function 2 "VMware PCIE" rev 0x01
pci5 at ppb4 bus 5
ppb5 at pci0 dev 21 function 3 "VMware PCIE" rev 0x01
pci6 at ppb5 bus 6
ppb6 at pci0 dev 21 function 4 "VMware PCIE" rev 0x01
pci7 at ppb6 bus 7
ppb7 at pci0 dev 21 function 5 "VMware PCIE" rev 0x01
pci8 at ppb7 bus 8
ppb8 at pci0 dev 21 function 6 "VMware PCIE" rev 0x01
pci9 at ppb8 bus 9
ppb9 at pci0 dev 21 function 7 "VMware PCIE" rev 0x01
pci10 at ppb9 bus 10
ppb10 at pci0 dev 22 function 0 "VMware PCIE" rev 0x01
pci11 at ppb10 bus 11
vmx1 at pci11 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 19,
address 00:50:56:8c:13:1f
ppb11 at pci0 dev 22 function 1 "VMware PCIE" rev 0x01
pci12 at ppb11 bus 12
ppb12 at pci0 dev 22 function 2 "VMware PCIE" rev 0x01
pci13 at ppb12 bus 13
ppb13 at pci0 dev 22 function 3 "VMware PCIE" rev 0x01
pci14 at ppb13 bus 14
ppb14 at pci0 dev 22 function 4 "VMware PCIE" rev 0x01
pci15 at ppb14 bus 15
ppb15 at pci0 dev 22 function 5 "VMware PCIE" rev 0x01
pci16 at ppb15 bus 16
ppb16 at pci0 dev 22 function 6 "VMware PCIE" rev 0x01
pci17 at ppb16 bus 17
ppb17 at pci0 dev 22 function 7 "VMware PCIE" rev 0x01
pci18 at ppb17 bus 18
ppb18 at pci0 dev 23 function 0 "VMware PCIE" rev 0x01
pci19 at ppb18 bus 19
vmx2 at pci19 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 16,
address 00:50:56:8c:46:34
ppb19 at pci0 dev 23 function 1 "VMware PCIE" rev 0x01
pci20 at ppb19 bus 20
ppb20 at pci0 dev 23 function 2 "VMware PCIE" rev 0x01
pci21 at ppb20 bus 21
ppb21 at pci0 dev 23 function 3 "VMware PCIE" rev 0x01
pci22 at ppb21 bus 22
ppb22 at pci0 dev 23 function 4 "VMware PCIE" rev 0x01
pci23 at ppb22 bus 23
ppb23 at pci0 dev 23 function 5 "VMware PCIE" rev 0x01
pci24 at ppb23 bus 24
ppb24 at pci0 dev 23 function 6 "VMware PCIE" rev 0x01
pci25 at ppb24 bus 25
ppb25 at pci0 dev 23 function 7 "VMware PCIE" rev 0x01
pci26 at ppb25 bus 26
ppb26 at pci0 dev 24 function 0 "VMware PCIE" rev 0x01
pci27 at ppb26 bus 27
ppb27 at pci0 dev 24 function 1 "VMware PCIE" rev 0x01
pci28 at ppb27 bus 28
ppb28 at pci0 dev 24 function 2 "VMware PCIE" rev 0x01
pci29 at ppb28 bus 29
ppb29 at pci0 dev 24 function 3 "VMware PCIE" rev 0x01
pci30 at ppb29 bus 30
ppb30 at pci0 dev 24 function 4 "VMware PCIE" rev 0x01
pci31 at ppb30 bus 31
ppb31 at pci0 dev 24 function 5 "VMware PCIE" rev 0x01
pci32 at ppb31 bus 32
ppb32 at pci0 dev 24 function 6 "VMware PCIE" rev 0x01
pci33 at ppb32 bus 33
ppb33 at pci0 dev 24 function 7 "VMware PCIE" rev 0x01
pci34 at ppb33 bus 34
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (a470a90009e9ea4a.a) swap on sd0b dump on sd0b
syncing disks... done
rebooting...
OpenBSD 6.7 (GENERIC.MP) #1: Sat May 16 16:33:02 MDT 2020
    [hidden email]:/usr/src/sys/arch/amd64/compile/
GENERIC.MP
real mem = 4278124544 (4079MB)
avail mem = 4135862272 (3944MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (242 entries)
bios0: vendor Phoenix Technologies LTD version "6.00" date 09/19/2018
bios0: VMware, Inc. VMware Virtual Platform
acpi0 at bios0: ACPI 4.0
acpi0: sleep states S0 S1 S4 S5
acpi0: tables DSDT FACP BOOT APIC MCFG SRAT HPET WAET
acpi0: wakeup devices PCI0(S3) USB_(S1) P2P0(S3) S1F0(S3) S2F0(S3) S8F0(S3)
S16F(S3) S17F(S3) S18F(S3) S22F(S3) S23F(S3) S24F(S3) S25F(S3) PE40(S3)
S1F0(S3) PE50(S3) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.90 MHz, 06-3a-00
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 65MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.71 MHz, 06-3a-00
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 24 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xf0000000, bus 0-127
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpicpu0 at acpi0: C1(@1 halt!)
acpicpu1 at acpi0: C1(@1 halt!)
acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
acpicmos0 at acpi0
"PNP0A05" at acpi0 not configured
acpiac0 at acpi0: AC unit online
cpu0: using IvyBridge MDS workaround
pvbus0 at mainbus0: VMware
vmt0 at pvbus0
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
pci1 at ppb0 bus 1
pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x08
pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA, channel
0 configured to compatibility, channel 1 configured to compatibility
pciide0: channel 0 disabled (no drives)
atapiscsi0 at pciide0 channel 1 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
piixpm0 at pci0 dev 7 function 3 "Intel 82371AB Power" rev 0x08: SMBus
disabled
"VMware VMCI" rev 0x10 at pci0 dev 7 function 7 not configured
vga1 at pci0 dev 15 function 0 "VMware SVGA II" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
mpi0 at pci0 dev 16 function 0 "Symbios Logic 53c1030" rev 0x01: apic 2 int
17
mpi0: 0, firmware 1.3.41.32
scsibus2 at mpi0: 16 targets, initiator 7
sd0 at scsibus2 targ 0 lun 0: <VMware, Virtual disk, 2.0>
sd0: 8192MB, 512 bytes/sector, 16777216 sectors, thin
mpi0: target 0 Sync at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
ppb1 at pci0 dev 17 function 0 "VMware PCI" rev 0x02
pci2 at ppb1 bus 2
ppb2 at pci0 dev 21 function 0 "VMware PCIE" rev 0x01
pci3 at ppb2 bus 3
vmx0 at pci3 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 18,
address 00:50:56:8c:ea:36
ppb3 at pci0 dev 21 function 1 "VMware PCIE" rev 0x01
pci4 at ppb3 bus 4
ppb4 at pci0 dev 21 function 2 "VMware PCIE" rev 0x01
pci5 at ppb4 bus 5
ppb5 at pci0 dev 21 function 3 "VMware PCIE" rev 0x01
pci6 at ppb5 bus 6
ppb6 at pci0 dev 21 function 4 "VMware PCIE" rev 0x01
pci7 at ppb6 bus 7
ppb7 at pci0 dev 21 function 5 "VMware PCIE" rev 0x01
pci8 at ppb7 bus 8
ppb8 at pci0 dev 21 function 6 "VMware PCIE" rev 0x01
pci9 at ppb8 bus 9
ppb9 at pci0 dev 21 function 7 "VMware PCIE" rev 0x01
pci10 at ppb9 bus 10
ppb10 at pci0 dev 22 function 0 "VMware PCIE" rev 0x01
pci11 at ppb10 bus 11
vmx1 at pci11 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 19,
address 00:50:56:8c:13:1f
ppb11 at pci0 dev 22 function 1 "VMware PCIE" rev 0x01
pci12 at ppb11 bus 12
ppb12 at pci0 dev 22 function 2 "VMware PCIE" rev 0x01
pci13 at ppb12 bus 13
ppb13 at pci0 dev 22 function 3 "VMware PCIE" rev 0x01
pci14 at ppb13 bus 14
ppb14 at pci0 dev 22 function 4 "VMware PCIE" rev 0x01
pci15 at ppb14 bus 15
ppb15 at pci0 dev 22 function 5 "VMware PCIE" rev 0x01
pci16 at ppb15 bus 16
ppb16 at pci0 dev 22 function 6 "VMware PCIE" rev 0x01
pci17 at ppb16 bus 17
ppb17 at pci0 dev 22 function 7 "VMware PCIE" rev 0x01
pci18 at ppb17 bus 18
ppb18 at pci0 dev 23 function 0 "VMware PCIE" rev 0x01
pci19 at ppb18 bus 19
vmx2 at pci19 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 16,
address 00:50:56:8c:46:34
ppb19 at pci0 dev 23 function 1 "VMware PCIE" rev 0x01
pci20 at ppb19 bus 20
ppb20 at pci0 dev 23 function 2 "VMware PCIE" rev 0x01
pci21 at ppb20 bus 21
ppb21 at pci0 dev 23 function 3 "VMware PCIE" rev 0x01
pci22 at ppb21 bus 22
ppb22 at pci0 dev 23 function 4 "VMware PCIE" rev 0x01
pci23 at ppb22 bus 23
ppb23 at pci0 dev 23 function 5 "VMware PCIE" rev 0x01
pci24 at ppb23 bus 24
ppb24 at pci0 dev 23 function 6 "VMware PCIE" rev 0x01
pci25 at ppb24 bus 25
ppb25 at pci0 dev 23 function 7 "VMware PCIE" rev 0x01
pci26 at ppb25 bus 26
ppb26 at pci0 dev 24 function 0 "VMware PCIE" rev 0x01
pci27 at ppb26 bus 27
ppb27 at pci0 dev 24 function 1 "VMware PCIE" rev 0x01
pci28 at ppb27 bus 28
ppb28 at pci0 dev 24 function 2 "VMware PCIE" rev 0x01
pci29 at ppb28 bus 29
ppb29 at pci0 dev 24 function 3 "VMware PCIE" rev 0x01
pci30 at ppb29 bus 30
ppb30 at pci0 dev 24 function 4 "VMware PCIE" rev 0x01
pci31 at ppb30 bus 31
ppb31 at pci0 dev 24 function 5 "VMware PCIE" rev 0x01
pci32 at ppb31 bus 32
ppb32 at pci0 dev 24 function 6 "VMware PCIE" rev 0x01
pci33 at ppb32 bus 33
ppb33 at pci0 dev 24 function 7 "VMware PCIE" rev 0x01
pci34 at ppb33 bus 34
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (a470a90009e9ea4a.a) swap on sd0b dump on sd0b
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Re: BGPD route update loop between iBGP peers after 6.6->6.7 upgrade

Esa Kuusisto
And before anyone asks, I did check eBGP peers that networks in question
did not repeatedly update and withdrew. Update messages between eBGP peers
are nominal.

Br
-Esa

On Sat, May 23, 2020 at 12:47 AM Esa Kuusisto <[hidden email]>
wrote:

> Hi
>
> I upgraded today two openbsd routers with openbgpd from 6.6 -> 6.7.
> Upgrade was done using sysupgrade. Router1 and Router2 have two ebgp peers,
> two iBGP peers to local switches and one iBGP peer between Router1
> <->Router2. Router2  was first upgraded and no problems there. After
> Router1 upgrade I saw high cpu utilization from bgpd. From logs I saw that
> both Router1 and Router2 saw two networks being updated between each other
> and withdraw multiple times every second:
>
> May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
> (PeerRouter2_v4) AS43XXX: withdraw 149.63.0.0/17
> May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
> (PeerRouter2_v4) AS43XXX: withdraw 149.63.59.0/24
> May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
> (PeerRouter2_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.252
> May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
> (PeerRouter2_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.252
>
> May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
> (PeerRouter1_v4) AS43XXX: withdraw 149.63.0.0/17
> May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
> (PeerRouter1_v4) AS43XXX: withdraw 149.63.59.0/24
> May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
> (PeerRouter1_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.253
> May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
> (PeerRouter1_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.253
>
> Router1
> Neighbor                   AS    MsgRcvd    MsgSent  OutQ Up/Down
>  State/PrfRcvd
> PeerRouter2_v4          43XXX    5564646    5639942     0 00:47:19 810647
> PeerRouter2_v6          43XXX      52294      82663     0 00:47:19  85391
>
> Router2
> Neighbor                   AS    MsgRcvd    MsgSent  OutQ Up/Down
>  State/PrfRcvd
> PeerRouter1_v4          43XXX    6039364    6037168     0 00:47:34 810654
> PeerRouter1_v6          43XXX     421226     417520     0 00:47:34  87247
>
> I do not have any relation to those 149.63/17 and 149.63.59/24 networks.
>
> For debug purposes I did filter those announcements and problem was fixed.
> I did remove filter to test if the announcement loop was gone and it was
> for now.
> No configuration changes to bgpd.conf before or after upgrade (except that
> filter after the high cpu load reason was found).
>
> Br
> -Esa Kuusisto
>
> dmesg:
> OpenBSD 6.7 (RAMDISK_CD) #177: Thu May  7 11:19:02 MDT 2020
>     [hidden email]:/usr/src/sys/arch/amd64/compile/RAMDISK_CD
> real mem = 4278124544 (4079MB)
> avail mem = 4144447488 (3952MB)
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (242 entries)
> bios0: vendor Phoenix Technologies LTD version "6.00" date 09/19/2018
> bios0: VMware, Inc. VMware Virtual Platform
> acpi0 at bios0: ACPI 4.0
> acpi0: tables DSDT FACP BOOT APIC MCFG SRAT HPET WAET
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.91 MHz, 06-3a-00
> cpu0:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
> cpu0: 256KB 64b/line 8-way L2 cache
> cpu0: apic clock running at 65MHz
> cpu at mainbus0: not configured
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 24 pins
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpicpu at acpi0 not configured
> "PNP0A03" at acpi0 not configured
> acpicmos0 at acpi0
> "PNP0A05" at acpi0 not configured
> "ACPI0003" at acpi0 not configured
> cpu0: using IvyBridge MDS workaround
> pvbus0 at mainbus0: VMware
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
> ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
> pci1 at ppb0 bus 1
> "Intel 82371AB PIIX4 ISA" rev 0x08 at pci0 dev 7 function 0 not configured
> pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA,
> channel 0 configured to compatibility, channel 1 configured to compatibility
> pciide0: channel 0 disabled (no drives)
> atapiscsi0 at pciide0 channel 1 drive 0
> scsibus0 at atapiscsi0: 2 targets
> cd0 at scsibus0 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> removable
> cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> "Intel 82371AB Power" rev 0x08 at pci0 dev 7 function 3 not configured
> "VMware VMCI" rev 0x10 at pci0 dev 7 function 7 not configured
> vga1 at pci0 dev 15 function 0 "VMware SVGA II" rev 0x00
> vga1: aperture needed
> wsdisplay1 at vga1 mux 1: console (80x25, vt100 emulation)
> mpi0 at pci0 dev 16 function 0 "Symbios Logic 53c1030" rev 0x01: apic 2
> int 17
> mpi0: 0, firmware 1.3.41.32
> scsibus1 at mpi0: 16 targets, initiator 7
> sd0 at scsibus1 targ 0 lun 0: <VMware, Virtual disk, 2.0>
> sd0: 8192MB, 512 bytes/sector, 16777216 sectors, thin
> mpi0: target 0 Sync at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
> ppb1 at pci0 dev 17 function 0 "VMware PCI" rev 0x02
> pci2 at ppb1 bus 2
> ppb2 at pci0 dev 21 function 0 "VMware PCIE" rev 0x01
> pci3 at ppb2 bus 3
> vmx0 at pci3 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 18,
> address 00:50:56:8c:ea:36
> ppb3 at pci0 dev 21 function 1 "VMware PCIE" rev 0x01
> pci4 at ppb3 bus 4
> ppb4 at pci0 dev 21 function 2 "VMware PCIE" rev 0x01
> pci5 at ppb4 bus 5
> ppb5 at pci0 dev 21 function 3 "VMware PCIE" rev 0x01
> pci6 at ppb5 bus 6
> ppb6 at pci0 dev 21 function 4 "VMware PCIE" rev 0x01
> pci7 at ppb6 bus 7
> ppb7 at pci0 dev 21 function 5 "VMware PCIE" rev 0x01
> pci8 at ppb7 bus 8
> ppb8 at pci0 dev 21 function 6 "VMware PCIE" rev 0x01
> pci9 at ppb8 bus 9
> ppb9 at pci0 dev 21 function 7 "VMware PCIE" rev 0x01
> pci10 at ppb9 bus 10
> ppb10 at pci0 dev 22 function 0 "VMware PCIE" rev 0x01
> pci11 at ppb10 bus 11
> vmx1 at pci11 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 19,
> address 00:50:56:8c:13:1f
> ppb11 at pci0 dev 22 function 1 "VMware PCIE" rev 0x01
> pci12 at ppb11 bus 12
> ppb12 at pci0 dev 22 function 2 "VMware PCIE" rev 0x01
> pci13 at ppb12 bus 13
> ppb13 at pci0 dev 22 function 3 "VMware PCIE" rev 0x01
> pci14 at ppb13 bus 14
> ppb14 at pci0 dev 22 function 4 "VMware PCIE" rev 0x01
> pci15 at ppb14 bus 15
> ppb15 at pci0 dev 22 function 5 "VMware PCIE" rev 0x01
> pci16 at ppb15 bus 16
> ppb16 at pci0 dev 22 function 6 "VMware PCIE" rev 0x01
> pci17 at ppb16 bus 17
> ppb17 at pci0 dev 22 function 7 "VMware PCIE" rev 0x01
> pci18 at ppb17 bus 18
> ppb18 at pci0 dev 23 function 0 "VMware PCIE" rev 0x01
> pci19 at ppb18 bus 19
> vmx2 at pci19 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 16,
> address 00:50:56:8c:46:34
> ppb19 at pci0 dev 23 function 1 "VMware PCIE" rev 0x01
> pci20 at ppb19 bus 20
> ppb20 at pci0 dev 23 function 2 "VMware PCIE" rev 0x01
> pci21 at ppb20 bus 21
> ppb21 at pci0 dev 23 function 3 "VMware PCIE" rev 0x01
> pci22 at ppb21 bus 22
> ppb22 at pci0 dev 23 function 4 "VMware PCIE" rev 0x01
> pci23 at ppb22 bus 23
> ppb23 at pci0 dev 23 function 5 "VMware PCIE" rev 0x01
> pci24 at ppb23 bus 24
> ppb24 at pci0 dev 23 function 6 "VMware PCIE" rev 0x01
> pci25 at ppb24 bus 25
> ppb25 at pci0 dev 23 function 7 "VMware PCIE" rev 0x01
> pci26 at ppb25 bus 26
> ppb26 at pci0 dev 24 function 0 "VMware PCIE" rev 0x01
> pci27 at ppb26 bus 27
> ppb27 at pci0 dev 24 function 1 "VMware PCIE" rev 0x01
> pci28 at ppb27 bus 28
> ppb28 at pci0 dev 24 function 2 "VMware PCIE" rev 0x01
> pci29 at ppb28 bus 29
> ppb29 at pci0 dev 24 function 3 "VMware PCIE" rev 0x01
> pci30 at ppb29 bus 30
> ppb30 at pci0 dev 24 function 4 "VMware PCIE" rev 0x01
> pci31 at ppb30 bus 31
> ppb31 at pci0 dev 24 function 5 "VMware PCIE" rev 0x01
> pci32 at ppb31 bus 32
> ppb32 at pci0 dev 24 function 6 "VMware PCIE" rev 0x01
> pci33 at ppb32 bus 33
> ppb33 at pci0 dev 24 function 7 "VMware PCIE" rev 0x01
> pci34 at ppb33 bus 34
> isa0 at mainbus0
> pckbc0 at isa0 port 0x60/5 irq 1 irq 12
> pckbd0 at pckbc0 (kbd slot)
> wskbd0 at pckbd0: console keyboard, using wsdisplay1
> softraid0 at root
> scsibus2 at softraid0: 256 targets
> root on rd0a swap on rd0b dump on rd0b
> WARNING: CHECK AND RESET THE DATE!
> syncing disks... done
> rebooting...
> OpenBSD 6.7 (GENERIC.MP) #182: Thu May  7 11:11:58 MDT 2020
>     [hidden email]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 4278124544 (4079MB)
> avail mem = 4135862272 (3944MB)
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (242 entries)
> bios0: vendor Phoenix Technologies LTD version "6.00" date 09/19/2018
> bios0: VMware, Inc. VMware Virtual Platform
> acpi0 at bios0: ACPI 4.0
> acpi0: sleep states S0 S1 S4 S5
> acpi0: tables DSDT FACP BOOT APIC MCFG SRAT HPET WAET
> acpi0: wakeup devices PCI0(S3) USB_(S1) P2P0(S3) S1F0(S3) S2F0(S3)
> S8F0(S3) S16F(S3) S17F(S3) S18F(S3) S22F(S3) S23F(S3) S24F(S3) S25F(S3)
> PE40(S3) S1F0(S3) PE50(S3) [...]
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.91 MHz, 06-3a-00
> cpu0:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
> cpu0: 256KB 64b/line 8-way L2 cache
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
> cpu0: apic clock running at 65MHz
> cpu1 at mainbus0: apid 1 (application processor)
> cpu1: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.86 MHz, 06-3a-00
> cpu1:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
> cpu1: 256KB 64b/line 8-way L2 cache
> cpu1: smt 0, core 1, package 0
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 24 pins
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xf0000000, bus 0-127
> acpihpet0 at acpi0: 14318179 Hz
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpicpu0 at acpi0: C1(@1 halt!)
> acpicpu1 at acpi0: C1(@1 halt!)
> acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
> acpicmos0 at acpi0
> "PNP0A05" at acpi0 not configured
> acpiac0 at acpi0: AC unit online
> cpu0: using IvyBridge MDS workaround
> pvbus0 at mainbus0: VMware
> vmt0 at pvbus0
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
> ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
> pci1 at ppb0 bus 1
> pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x08
> pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA,
> channel 0 configured to compatibility, channel 1 configured to compatibility
> pciide0: channel 0 disabled (no drives)
> atapiscsi0 at pciide0 channel 1 drive 0
> scsibus1 at atapiscsi0: 2 targets
> cd0 at scsibus1 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> removable
> cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> piixpm0 at pci0 dev 7 function 3 "Intel 82371AB Power" rev 0x08: SMBus
> disabled
> "VMware VMCI" rev 0x10 at pci0 dev 7 function 7 not configured
> vga1 at pci0 dev 15 function 0 "VMware SVGA II" rev 0x00
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> mpi0 at pci0 dev 16 function 0 "Symbios Logic 53c1030" rev 0x01: apic 2
> int 17
> mpi0: 0, firmware 1.3.41.32
> scsibus2 at mpi0: 16 targets, initiator 7
> sd0 at scsibus2 targ 0 lun 0: <VMware, Virtual disk, 2.0>
> sd0: 8192MB, 512 bytes/sector, 16777216 sectors, thin
> mpi0: target 0 Sync at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
> ppb1 at pci0 dev 17 function 0 "VMware PCI" rev 0x02
> pci2 at ppb1 bus 2
> ppb2 at pci0 dev 21 function 0 "VMware PCIE" rev 0x01
> pci3 at ppb2 bus 3
> vmx0 at pci3 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 18,
> address 00:50:56:8c:ea:36
> ppb3 at pci0 dev 21 function 1 "VMware PCIE" rev 0x01
> pci4 at ppb3 bus 4
> ppb4 at pci0 dev 21 function 2 "VMware PCIE" rev 0x01
> pci5 at ppb4 bus 5
> ppb5 at pci0 dev 21 function 3 "VMware PCIE" rev 0x01
> pci6 at ppb5 bus 6
> ppb6 at pci0 dev 21 function 4 "VMware PCIE" rev 0x01
> pci7 at ppb6 bus 7
> ppb7 at pci0 dev 21 function 5 "VMware PCIE" rev 0x01
> pci8 at ppb7 bus 8
> ppb8 at pci0 dev 21 function 6 "VMware PCIE" rev 0x01
> pci9 at ppb8 bus 9
> ppb9 at pci0 dev 21 function 7 "VMware PCIE" rev 0x01
> pci10 at ppb9 bus 10
> ppb10 at pci0 dev 22 function 0 "VMware PCIE" rev 0x01
> pci11 at ppb10 bus 11
> vmx1 at pci11 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 19,
> address 00:50:56:8c:13:1f
> ppb11 at pci0 dev 22 function 1 "VMware PCIE" rev 0x01
> pci12 at ppb11 bus 12
> ppb12 at pci0 dev 22 function 2 "VMware PCIE" rev 0x01
> pci13 at ppb12 bus 13
> ppb13 at pci0 dev 22 function 3 "VMware PCIE" rev 0x01
> pci14 at ppb13 bus 14
> ppb14 at pci0 dev 22 function 4 "VMware PCIE" rev 0x01
> pci15 at ppb14 bus 15
> ppb15 at pci0 dev 22 function 5 "VMware PCIE" rev 0x01
> pci16 at ppb15 bus 16
> ppb16 at pci0 dev 22 function 6 "VMware PCIE" rev 0x01
> pci17 at ppb16 bus 17
> ppb17 at pci0 dev 22 function 7 "VMware PCIE" rev 0x01
> pci18 at ppb17 bus 18
> ppb18 at pci0 dev 23 function 0 "VMware PCIE" rev 0x01
> pci19 at ppb18 bus 19
> vmx2 at pci19 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 16,
> address 00:50:56:8c:46:34
> ppb19 at pci0 dev 23 function 1 "VMware PCIE" rev 0x01
> pci20 at ppb19 bus 20
> ppb20 at pci0 dev 23 function 2 "VMware PCIE" rev 0x01
> pci21 at ppb20 bus 21
> ppb21 at pci0 dev 23 function 3 "VMware PCIE" rev 0x01
> pci22 at ppb21 bus 22
> ppb22 at pci0 dev 23 function 4 "VMware PCIE" rev 0x01
> pci23 at ppb22 bus 23
> ppb23 at pci0 dev 23 function 5 "VMware PCIE" rev 0x01
> pci24 at ppb23 bus 24
> ppb24 at pci0 dev 23 function 6 "VMware PCIE" rev 0x01
> pci25 at ppb24 bus 25
> ppb25 at pci0 dev 23 function 7 "VMware PCIE" rev 0x01
> pci26 at ppb25 bus 26
> ppb26 at pci0 dev 24 function 0 "VMware PCIE" rev 0x01
> pci27 at ppb26 bus 27
> ppb27 at pci0 dev 24 function 1 "VMware PCIE" rev 0x01
> pci28 at ppb27 bus 28
> ppb28 at pci0 dev 24 function 2 "VMware PCIE" rev 0x01
> pci29 at ppb28 bus 29
> ppb29 at pci0 dev 24 function 3 "VMware PCIE" rev 0x01
> pci30 at ppb29 bus 30
> ppb30 at pci0 dev 24 function 4 "VMware PCIE" rev 0x01
> pci31 at ppb30 bus 31
> ppb31 at pci0 dev 24 function 5 "VMware PCIE" rev 0x01
> pci32 at ppb31 bus 32
> ppb32 at pci0 dev 24 function 6 "VMware PCIE" rev 0x01
> pci33 at ppb32 bus 33
> ppb33 at pci0 dev 24 function 7 "VMware PCIE" rev 0x01
> pci34 at ppb33 bus 34
> isa0 at pcib0
> isadma0 at isa0
> pckbc0 at isa0 port 0x60/5 irq 1 irq 12
> pckbd0 at pckbc0 (kbd slot)
> wskbd0 at pckbd0: console keyboard, using wsdisplay0
> pms0 at pckbc0 (aux slot)
> wsmouse0 at pms0 mux 0
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> vscsi0 at root
> scsibus3 at vscsi0: 256 targets
> softraid0 at root
> scsibus4 at softraid0: 256 targets
> root on sd0a (a470a90009e9ea4a.a) swap on sd0b dump on sd0b
> syncing disks... done
> rebooting...
> OpenBSD 6.7 (GENERIC.MP) #1: Sat May 16 16:33:02 MDT 2020
>     [hidden email]:/usr/src/sys/arch/amd64/compile/
> GENERIC.MP
> real mem = 4278124544 (4079MB)
> avail mem = 4135862272 (3944MB)
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (242 entries)
> bios0: vendor Phoenix Technologies LTD version "6.00" date 09/19/2018
> bios0: VMware, Inc. VMware Virtual Platform
> acpi0 at bios0: ACPI 4.0
> acpi0: sleep states S0 S1 S4 S5
> acpi0: tables DSDT FACP BOOT APIC MCFG SRAT HPET WAET
> acpi0: wakeup devices PCI0(S3) USB_(S1) P2P0(S3) S1F0(S3) S2F0(S3)
> S8F0(S3) S16F(S3) S17F(S3) S18F(S3) S22F(S3) S23F(S3) S24F(S3) S25F(S3)
> PE40(S3) S1F0(S3) PE50(S3) [...]
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.90 MHz, 06-3a-00
> cpu0:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
> cpu0: 256KB 64b/line 8-way L2 cache
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
> cpu0: apic clock running at 65MHz
> cpu1 at mainbus0: apid 1 (application processor)
> cpu1: Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 2799.71 MHz, 06-3a-00
> cpu1:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,MMX,FXSR,SSE,SSE2,SS,HTT,SSE3,PCLMUL,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,TSC_ADJUST,SMEP,ERMS,IBRS,IBPB,STIBP,L1DF,SSBD,ARAT,MELTDOWN
> cpu1: 256KB 64b/line 8-way L2 cache
> cpu1: smt 0, core 1, package 0
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 24 pins
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xf0000000, bus 0-127
> acpihpet0 at acpi0: 14318179 Hz
> acpiprt0 at acpi0: bus 0 (PCI0)
> acpicpu0 at acpi0: C1(@1 halt!)
> acpicpu1 at acpi0: C1(@1 halt!)
> acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
> acpicmos0 at acpi0
> "PNP0A05" at acpi0 not configured
> acpiac0 at acpi0: AC unit online
> cpu0: using IvyBridge MDS workaround
> pvbus0 at mainbus0: VMware
> vmt0 at pvbus0
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
> ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
> pci1 at ppb0 bus 1
> pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x08
> pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA,
> channel 0 configured to compatibility, channel 1 configured to compatibility
> pciide0: channel 0 disabled (no drives)
> atapiscsi0 at pciide0 channel 1 drive 0
> scsibus1 at atapiscsi0: 2 targets
> cd0 at scsibus1 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> removable
> cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> piixpm0 at pci0 dev 7 function 3 "Intel 82371AB Power" rev 0x08: SMBus
> disabled
> "VMware VMCI" rev 0x10 at pci0 dev 7 function 7 not configured
> vga1 at pci0 dev 15 function 0 "VMware SVGA II" rev 0x00
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> mpi0 at pci0 dev 16 function 0 "Symbios Logic 53c1030" rev 0x01: apic 2
> int 17
> mpi0: 0, firmware 1.3.41.32
> scsibus2 at mpi0: 16 targets, initiator 7
> sd0 at scsibus2 targ 0 lun 0: <VMware, Virtual disk, 2.0>
> sd0: 8192MB, 512 bytes/sector, 16777216 sectors, thin
> mpi0: target 0 Sync at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
> ppb1 at pci0 dev 17 function 0 "VMware PCI" rev 0x02
> pci2 at ppb1 bus 2
> ppb2 at pci0 dev 21 function 0 "VMware PCIE" rev 0x01
> pci3 at ppb2 bus 3
> vmx0 at pci3 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 18,
> address 00:50:56:8c:ea:36
> ppb3 at pci0 dev 21 function 1 "VMware PCIE" rev 0x01
> pci4 at ppb3 bus 4
> ppb4 at pci0 dev 21 function 2 "VMware PCIE" rev 0x01
> pci5 at ppb4 bus 5
> ppb5 at pci0 dev 21 function 3 "VMware PCIE" rev 0x01
> pci6 at ppb5 bus 6
> ppb6 at pci0 dev 21 function 4 "VMware PCIE" rev 0x01
> pci7 at ppb6 bus 7
> ppb7 at pci0 dev 21 function 5 "VMware PCIE" rev 0x01
> pci8 at ppb7 bus 8
> ppb8 at pci0 dev 21 function 6 "VMware PCIE" rev 0x01
> pci9 at ppb8 bus 9
> ppb9 at pci0 dev 21 function 7 "VMware PCIE" rev 0x01
> pci10 at ppb9 bus 10
> ppb10 at pci0 dev 22 function 0 "VMware PCIE" rev 0x01
> pci11 at ppb10 bus 11
> vmx1 at pci11 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 19,
> address 00:50:56:8c:13:1f
> ppb11 at pci0 dev 22 function 1 "VMware PCIE" rev 0x01
> pci12 at ppb11 bus 12
> ppb12 at pci0 dev 22 function 2 "VMware PCIE" rev 0x01
> pci13 at ppb12 bus 13
> ppb13 at pci0 dev 22 function 3 "VMware PCIE" rev 0x01
> pci14 at ppb13 bus 14
> ppb14 at pci0 dev 22 function 4 "VMware PCIE" rev 0x01
> pci15 at ppb14 bus 15
> ppb15 at pci0 dev 22 function 5 "VMware PCIE" rev 0x01
> pci16 at ppb15 bus 16
> ppb16 at pci0 dev 22 function 6 "VMware PCIE" rev 0x01
> pci17 at ppb16 bus 17
> ppb17 at pci0 dev 22 function 7 "VMware PCIE" rev 0x01
> pci18 at ppb17 bus 18
> ppb18 at pci0 dev 23 function 0 "VMware PCIE" rev 0x01
> pci19 at ppb18 bus 19
> vmx2 at pci19 dev 0 function 0 "VMware VMXNET3" rev 0x01: apic 2 int 16,
> address 00:50:56:8c:46:34
> ppb19 at pci0 dev 23 function 1 "VMware PCIE" rev 0x01
> pci20 at ppb19 bus 20
> ppb20 at pci0 dev 23 function 2 "VMware PCIE" rev 0x01
> pci21 at ppb20 bus 21
> ppb21 at pci0 dev 23 function 3 "VMware PCIE" rev 0x01
> pci22 at ppb21 bus 22
> ppb22 at pci0 dev 23 function 4 "VMware PCIE" rev 0x01
> pci23 at ppb22 bus 23
> ppb23 at pci0 dev 23 function 5 "VMware PCIE" rev 0x01
> pci24 at ppb23 bus 24
> ppb24 at pci0 dev 23 function 6 "VMware PCIE" rev 0x01
> pci25 at ppb24 bus 25
> ppb25 at pci0 dev 23 function 7 "VMware PCIE" rev 0x01
> pci26 at ppb25 bus 26
> ppb26 at pci0 dev 24 function 0 "VMware PCIE" rev 0x01
> pci27 at ppb26 bus 27
> ppb27 at pci0 dev 24 function 1 "VMware PCIE" rev 0x01
> pci28 at ppb27 bus 28
> ppb28 at pci0 dev 24 function 2 "VMware PCIE" rev 0x01
> pci29 at ppb28 bus 29
> ppb29 at pci0 dev 24 function 3 "VMware PCIE" rev 0x01
> pci30 at ppb29 bus 30
> ppb30 at pci0 dev 24 function 4 "VMware PCIE" rev 0x01
> pci31 at ppb30 bus 31
> ppb31 at pci0 dev 24 function 5 "VMware PCIE" rev 0x01
> pci32 at ppb31 bus 32
> ppb32 at pci0 dev 24 function 6 "VMware PCIE" rev 0x01
> pci33 at ppb32 bus 33
> ppb33 at pci0 dev 24 function 7 "VMware PCIE" rev 0x01
> pci34 at ppb33 bus 34
> isa0 at pcib0
> isadma0 at isa0
> pckbc0 at isa0 port 0x60/5 irq 1 irq 12
> pckbd0 at pckbc0 (kbd slot)
> wskbd0 at pckbd0: console keyboard, using wsdisplay0
> pms0 at pckbc0 (aux slot)
> wsmouse0 at pms0 mux 0
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> vscsi0 at root
> scsibus3 at vscsi0: 256 targets
> softraid0 at root
> scsibus4 at softraid0: 256 targets
> root on sd0a (a470a90009e9ea4a.a) swap on sd0b dump on sd0b
>
>
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Re: BGPD route update loop between iBGP peers after 6.6->6.7 upgrade

Claudio Jeker-3
In reply to this post by Esa Kuusisto
On Sat, May 23, 2020 at 12:47:58AM +0300, Esa Kuusisto wrote:

> Hi
>
> I upgraded today two openbsd routers with openbgpd from 6.6 -> 6.7. Upgrade
> was done using sysupgrade. Router1 and Router2 have two ebgp peers, two
> iBGP peers to local switches and one iBGP peer between Router1 <->Router2.
> Router2  was first upgraded and no problems there. After Router1 upgrade I
> saw high cpu utilization from bgpd. From logs I saw that both Router1 and
> Router2 saw two networks being updated between each other and withdraw
> multiple times every second:
>
> May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
> (PeerRouter2_v4) AS43XXX: withdraw 149.63.0.0/17
> May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
> (PeerRouter2_v4) AS43XXX: withdraw 149.63.59.0/24
> May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
> (PeerRouter2_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.252
> May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor AAA.BBB.211.252
> (PeerRouter2_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.252
>
> May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
> (PeerRouter1_v4) AS43XXX: withdraw 149.63.0.0/17
> May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
> (PeerRouter1_v4) AS43XXX: withdraw 149.63.59.0/24
> May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
> (PeerRouter1_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.253
> May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor AAA.BBB.211.253
> (PeerRouter1_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.253
>
> Router1
> Neighbor                   AS    MsgRcvd    MsgSent  OutQ Up/Down
>  State/PrfRcvd
> PeerRouter2_v4          43XXX    5564646    5639942     0 00:47:19 810647
> PeerRouter2_v6          43XXX      52294      82663     0 00:47:19  85391
>
> Router2
> Neighbor                   AS    MsgRcvd    MsgSent  OutQ Up/Down
>  State/PrfRcvd
> PeerRouter1_v4          43XXX    6039364    6037168     0 00:47:34 810654
> PeerRouter1_v6          43XXX     421226     417520     0 00:47:34  87247
>
> I do not have any relation to those 149.63/17 and 149.63.59/24 networks.
>
> For debug purposes I did filter those announcements and problem was fixed.
> I did remove filter to test if the announcement loop was gone and it was
> for now.
> No configuration changes to bgpd.conf before or after upgrade (except that
> filter after the high cpu load reason was found).
>
> Br
> -Esa Kuusisto
>

Please provide the bgpd.conf files for both routers. There are many ways
you can create an update loop and it is impossible to tell you what it is
without knowing the exact config.

--
:wq Claudio

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Re: BGPD route update loop between iBGP peers after 6.6->6.7 upgrade

Esa Kuusisto
Exact configs are sent.

Thanks
-Esa

On Sat, May 23, 2020 at 11:23 AM Claudio Jeker <[hidden email]> wrote:

> On Sat, May 23, 2020 at 12:47:58AM +0300, Esa Kuusisto wrote:
> > Hi
> >
> > I upgraded today two openbsd routers with openbgpd from 6.6 -> 6.7.
> Upgrade
> > was done using sysupgrade. Router1 and Router2 have two ebgp peers, two
> > iBGP peers to local switches and one iBGP peer between Router1
> <->Router2.
> > Router2  was first upgraded and no problems there. After Router1 upgrade
> I
> > saw high cpu utilization from bgpd. From logs I saw that both Router1 and
> > Router2 saw two networks being updated between each other and withdraw
> > multiple times every second:
> >
> > May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor
> AAA.BBB.211.252
> > (PeerRouter2_v4) AS43XXX: withdraw 149.63.0.0/17
> > May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor
> AAA.BBB.211.252
> > (PeerRouter2_v4) AS43XXX: withdraw 149.63.59.0/24
> > May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor
> AAA.BBB.211.252
> > (PeerRouter2_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.252
> > May 23 00:20:24 Router1 bgpd[22905]: Rib Loc-RIB: neighbor
> AAA.BBB.211.252
> > (PeerRouter2_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.252
> >
> > May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor
> AAA.BBB.211.253
> > (PeerRouter1_v4) AS43XXX: withdraw 149.63.0.0/17
> > May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor
> AAA.BBB.211.253
> > (PeerRouter1_v4) AS43XXX: withdraw 149.63.59.0/24
> > May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor
> AAA.BBB.211.253
> > (PeerRouter1_v4) AS43XXX: update 149.63.0.0/17 via AAA.BBB.211.253
> > May 23 00:17:44 Router2 bgpd[17698]: Rib Loc-RIB: neighbor
> AAA.BBB.211.253
> > (PeerRouter1_v4) AS43XXX: update 149.63.59.0/24 via AAA.BBB.211.253
> >
> > Router1
> > Neighbor                   AS    MsgRcvd    MsgSent  OutQ Up/Down
> >  State/PrfRcvd
> > PeerRouter2_v4          43XXX    5564646    5639942     0 00:47:19 810647
> > PeerRouter2_v6          43XXX      52294      82663     0 00:47:19  85391
> >
> > Router2
> > Neighbor                   AS    MsgRcvd    MsgSent  OutQ Up/Down
> >  State/PrfRcvd
> > PeerRouter1_v4          43XXX    6039364    6037168     0 00:47:34 810654
> > PeerRouter1_v6          43XXX     421226     417520     0 00:47:34  87247
> >
> > I do not have any relation to those 149.63/17 and 149.63.59/24 networks.
> >
> > For debug purposes I did filter those announcements and problem was
> fixed.
> > I did remove filter to test if the announcement loop was gone and it was
> > for now.
> > No configuration changes to bgpd.conf before or after upgrade (except
> that
> > filter after the high cpu load reason was found).
> >
> > Br
> > -Esa Kuusisto
> >
>
> Please provide the bgpd.conf files for both routers. There are many ways
> you can create an update loop and it is impossible to tell you what it is
> without knowing the exact config.
>
> --
> :wq Claudio
>