Nexus 7000 - unexpected shutdown of vPC-Ports during reload of the primary vPC Switch
Dear Community,
We experienced an unusual behavior of two Nexus 7000 switches within a vPC domain.
According to the attached sketch, we have four N7Ks in two data centers - two Nexus 7Ks are in a vPC domain for each data center.
Both data centers are connected via a Multilayer-vPC.
We had to reload one of these switches and I expected the other N7K in this vPC domain to continue forwarding over its vPC-Member-ports.
Actually, all vPC ports have been disabled on the secondary switch until the reload of the first N7K (vPC-Role: primary) finished.
Logging on Switch B:
20:11:51 <Switch B> %VPC-2-VPC_SUSP_ALL_VPC: Peer-link going down, suspending all vPCs on secondary
20:12:01 <Switch B> %VPC-2-PEER_KEEP_ALIVE_RECV_FAIL: In domain 1, VPC peer keep-alive receive has failed
In case of a Peer-link failure, I would expect this behavior if the other switch is still reachable via the Peer-Keepalive-Link (via the Mgmt-Port), but since we reloaded the whole switch, the vPCs should continue forwarding.
Could this be a bug or are there any timers to be tuned?
All N7K switches are running on NX-OS 6.2(8)
Switch A:
vpc domain 1
peer-switch
role priority 2048
system-priority 1024
peer-keepalive destination <Mgmt-IP-Switch-B>
delay restore 360
peer-gateway
auto-recovery reload-delay 360
ip arp synchronize
interface port-channel1
switchport mode trunk
switchport trunk allowed vlan <x-y>
spanning-tree port type network
vpc peer-link
Switch B:
vpc domain 1
peer-switch
role priority 1024
system-priority 1024
peer-keepalive destination <Mgmt-IP-Switch-A>
delay restore 360
peer-gateway
auto-recovery reload-delay 360
ip arp synchronize
interface port-channel1
switchport mode trunk
switchport trunk allowed vlan <x-y>
spanning-tree port type network
vpc peer-link
Best regards
Problem solved:
During the reload of the Nexus 7K, the linecards were powerd off a short time earlier than the Mgmt-Interface. As a result of this behavior, the secondary Nexus 7K received at least one vPC-Peer-Keepalive Message while its peer-link was already powerd off. To avoid a split brain scenario, the VPC-member-ports have been shut down.
Now we are using dedicated interfaces on the linecards for the VPC-Peer-Keepalive-Link and a reload of one N7K won't result in a total network outage any more.
Similar Messages
-
Nexus 5000 vPC suspended during reload delay period
Hi ,
after reloading on vPC-Peer-Switch be box comes up and all vPC-Member-Ports on the box are in suspended state until the reload delay time expired.
Unfortunately the link of the vPC-Member Ports are already up. This behaviour leads us in some problems if we connect a Cisco-UCS-FI with a LACP-Portchannel to a vPC on N5K.
Because the link of the suspended Port is up the FI detects the port also as up and running and set it to individual state, because of missing LACP-BPDUs, So at this time the FI hast two uplinks, one Port-Channel and one individual Ports. After 30 seconds the FI starts to repinning the servers over these two uplinks. Because the individual Port is not in forwarding state an the reloaded N5K until reload delay timer expired.
So during this period all the servers which are pinned to the individual Port are blackholed.
Possible Workarrounds
1. Creating a Pin-Group for the Port-Channel and pinning all Servers to this Pin-Group to avoid in case on channel-Member goes to individual state, any server is pinned to this individual Port . This could be a solution
2.Configuring the Port-Channel on FI for "suspend individual". Unfortunately I could not find a way to achive this. This would avoid that the individual Port is considered as possible uplink-port, so no pinning to the individual Port would happen.
3. Find a way that during the delay restore time on the suspended vPC-Member-Ports also the link is down. (In my opinion this would be the best way)
I am not sure if configuration of "individual suspend" on the vPC on the N5K would help.
any other ideas?
HubertWhat I really want is a command I can use to prevent VPC from turning off ports at all. I'd much rather have an active-active situation than have my entire network go down just because the primary VPC peer rebooted. VPC is not designed correctly to deal with that situation. And yes, it has happened. Multiple times with different VPC keepalive setups.
-
EtherChannel problem on Nexus 7000
Dear NetPro gurus,
One of my customer is trying to setup an EtherChannel (LACP) on a pair of Nexus 7000. However, doesn't matter what we do, the port Eth 1/17 always become suspended. We have tried swapping fiber cables and also swapping SFPs, but no help.
The 1st Nexus 7010 - called 'VIWLRCA'
The 2nd Nexus 7010 - called 'VIWLRCB'
Originally port eth 1/17 are left as 'normal' trunk port, and we can see eth 1/17 shows up fine under 'show interface brief'
viwlrca-PROD# sh run int eth 1/17
interface Ethernet1/17
switchport
switchport mode trunk
udld disable
no shutdown
viwlrca-PROD# sh run int eth 1/18
interface Ethernet1/18
switchport
switchport mode trunk
udld disable
channel-group 20 mode active
no shutdown
viwlrca-PROD# sh int brief
Ethernet VLAN Type Mode Status Reason Speed Port
Interface Ch #
Eth1/17 1 eth trunk up none 10G(S) --
Eth1/18 1 eth trunk up none 10G(S) 20
Eth1/19 -- eth routed down SFP not inserted auto(S) --
Eth1/20 -- eth routed down SFP not inserted auto(S) --
Eth1/21 -- eth routed down Administratively down auto(S) --
Eth1/22 -- eth routed down Administratively down auto(S) --
Eth1/23 -- eth routed down Administratively down auto(S) --
Eth1/24 -- eth routed down Administratively down auto(S) --
Eth2/25 -- eth routed down Administratively down auto(D) --
Eth2/26 -- eth routed down Administratively down auto(D) --
Eth2/27 -- eth routed down SFP not inserted auto(D) --
Eth2/28 -- eth routed down SFP not inserted auto(D) --
Eth2/29 -- eth routed down SFP not inserted auto(D) --
Eth2/30 -- eth routed down SFP not inserted auto(D) --
Eth2/31 -- eth routed down SFP not inserted auto(D) --
Eth2/32 -- eth routed down SFP not inserted auto(D) --
viwlrca-PROD#
But as soon as I add the Eth 1/17 back onto PortChannel 20
The Eth 1/17 becomes "Suspended" straight away
viwlrca-PROD# sh int brief
Ethernet VLAN Type Mode Status Reason Speed Por
t
Interface Ch
Eth1/17 1 eth trunk down suspended auto(S) 20
Eth1/18 1 eth trunk up none 10G(S) 20
Eth1/19 -- eth routed down SFP not inserted auto(S) --
Eth1/20 -- eth routed down SFP not inserted auto(S) --
Eth1/21 -- eth routed down Administratively down auto(S) --
Eth1/22 -- eth routed down Administratively down auto(S) --
Eth1/23 -- eth routed down Administratively down auto(S) --
Eth1/24 -- eth routed down Administratively down auto(S) --
Eth2/25 -- eth routed down Administratively down auto(D) --
Eth2/26 -- eth routed down Administratively down auto(D) --
Eth2/27 -- eth routed down SFP not inserted auto(D) --
Eth2/28 -- eth routed down SFP not inserted auto(D) --
Eth2/29 -- eth routed down SFP not inserted auto(D) --
Eth2/30 -- eth routed down SFP not inserted auto(D) --
Eth2/31 -- eth routed down SFP not inserted auto(D) --
Eth2/32 -- eth routed down SFP not inserted auto(D) --
viwlrca-PROD#
viwlrca-PROD# sh port-channel summary
Flags: D - Down P - Up in port-channel (members)
I - Individual H - Hot-standby (LACP only)
s - Suspended r - Module-removed
S - Switched R - Routed
U - Up (port-channel)
M - Not in use. Min-links not met
Group Port- Type Protocol Member Ports
Channel
20 Po20(SU) Eth LACP Eth1/17(s) Eth1/18(P)
viwlrca-PROD#
Config on Primary Nexus:-
viwlrca-PROD# sh run
!Command: show running-config
!Time: Tue Mar 22 06:04:26 2011
version 5.1(1a)
hostname PROD
cfs eth distribute
feature udld
feature interface-vlan
feature lacp
feature vpc
feature vtp
username admin password 5 $1$pkJaKHZW$Sx4wpDG5xXYkD.QfDk/Cg. role vdc-admin
no ip domain-lookup
ip domain-name vfc.com
crypto key param rsa label viwlrca-PROD.vfc.com modulus 2048
snmp-server user admin vdc-admin auth md5 0x05f7328e3b39a70be09abc3056ec2819 pri
v 0x05f7328e3b39a70be09abc3056ec2819 localizedkey
vrf context management
spanning-tree pathcost method long
spanning-tree port type edge bpduguard default
spanning-tree loopguard default
spanning-tree vlan 1-3967,4048-4093 priority 4096
interface Vlan1
interface Vlan161
ip address 172.30.161.2/24
interface Vlan162
ip address 172.30.162.2/24
interface Vlan163
ip address 172.30.163.2/24
interface Vlan164
ip address 172.30.164.2/24
interface Vlan165
ip address 172.30.165.2/24
interface Vlan190
ip address 172.30.190.2/24
interface port-channel20
switchport
switchport mode trunk
interface Ethernet1/17
switchport
switchport mode trunk
udld disable
channel-group 20 mode active
no shutdown
interface Ethernet1/18
switchport
switchport mode trunk
udld disable
channel-group 20 mode active
no shutdown
interface Ethernet1/19
interface Ethernet1/20
interface Ethernet1/21
interface Ethernet1/22
interface Ethernet1/23
interface Ethernet1/24
interface Ethernet2/25
interface Ethernet2/26
interface Ethernet2/27
interface Ethernet2/28
interface Ethernet2/29
interface Ethernet2/30
interface Ethernet2/31
interface Ethernet2/32
interface Ethernet2/33
interface Ethernet2/34
interface Ethernet2/35
interface Ethernet2/36
interface Ethernet3/25
interface Ethernet3/26
interface Ethernet3/27
interface Ethernet3/28
interface Ethernet3/29
interface Ethernet3/30
interface Ethernet3/31
interface Ethernet3/32
interface Ethernet3/33
interface Ethernet3/34
interface Ethernet3/35
interface Ethernet3/36
line vty
viwlrca-PROD#
Config for Secondary Nexus 7000
VIWLRCB-PROD# sh run
!Command: show running-config
!Time: Tue Mar 22 09:19:22 2011
version 5.1(1a)
hostname PROD
cfs eth distribute
feature interface-vlan
feature lacp
feature vpc
feature vtp
username admin password 5 $1$Lc486EOm$EtKhZWuxGjWWokfeuUsMk. role vdc-admin
no ip domain-lookup
ip domain-name vfc.com
crypto key param rsa label VIWLRCB-PROD.vfc.com modulus 2048
snmp-server user admin vdc-admin auth md5 0xeb607b54234985ed6740c5fdbb8d84c6 pri
v 0xeb607b54234985ed6740c5fdbb8d84c6 localizedkey
vrf context management
spanning-tree pathcost method long
spanning-tree port type edge bpduguard default
spanning-tree loopguard default
spanning-tree vlan 1-3967,4048-4093 priority 8192
interface Vlan1
interface port-channel20
switchport
switchport mode trunk
interface Ethernet1/17
switchport
switchport mode trunk
channel-group 20 mode active
no shutdown
interface Ethernet1/18
switchport
switchport mode trunk
channel-group 20 mode active
no shutdown
interface Ethernet1/19
interface Ethernet1/20
interface Ethernet1/21
interface Ethernet1/22
interface Ethernet1/23
interface Ethernet1/24
interface Ethernet2/25
interface Ethernet2/26
interface Ethernet2/27
interface Ethernet2/28
interface Ethernet2/29
interface Ethernet2/30
interface Ethernet2/31
interface Ethernet2/32
interface Ethernet2/33
interface Ethernet2/34
interface Ethernet2/35
interface Ethernet2/36
interface Ethernet3/25
interface Ethernet3/26
interface Ethernet3/27
interface Ethernet3/28
interface Ethernet3/29
interface Ethernet3/30
interface Ethernet3/31
interface Ethernet3/32
interface Ethernet3/33
interface Ethernet3/34
interface Ethernet3/35
interface Ethernet3/36
line vty
VIWLRCB-PROD#
Cheers,
HuntQuick troubleshoot:
Default all interfaces in newly created port-channel as well as the port-channel interface, then delete port-channel interface. Recreate port-channel without the LACP protocol:
interface e1/17,e1/18
switchport
channel-group 20 mode on
no shutdown
exit
interface port-channel20
switchport
switchport mode trunk
no shutdown
exit
show port-channel summ
show int trunk
HTH,
Sean -
Connecting IBM B22 FEXes to Nexus 7000
Hello everybody,
Could someone give an definite answer, better to based on personal experience - is it possible to attach B22 FEX going to the IBM chassis to Nexus 7000 via F2 series 48-port 10G card?
NXOS is currently running 6.1.5a but we plan to upgrade to 6.2.8 or 6.2.12 once we get new 4GB DIMMs for SUP1 modules.
Thanks.In my case, I was getting this error on a interface of a Nexus C6001 with the FET-10G transceiver. I was able to clear it up by temorarily replacing and configuring a slower GLC-T which worked as expected. I then removed all the settings an got the FET-10G to link.
-
Pro 15 unexpected shutdown due to video card issue
I experienced unexpected shutdown (black screen) twice a day recently. the report shows it is Graphic gard issue. Do I need to update the driver?
Anonymous UUID: 71E7AE5E-09ED-4757-F0AF-CFBEB36E99FF
Wed Jun 11 15:22:07 2014
panic(cpu 0 caller 0xffffff7f856f5f7c): "GPU Panic: [<None>] 3 0 a0 d9 9 8 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0x112c00000 0xffffff81f5a88000 0x0e7150a2, D0, P1/4\n"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.5.26/src/Apple MuxControl/kext/GPUPanic.cpp:127
Backtrace (CPU 0), Frame : Return Address
0xffffff81f1443320 : 0xffffff8003422fa9
0xffffff81f14433a0 : 0xffffff7f856f5f7c
0xffffff81f1443470 : 0xffffff7f83e04bf4
0xffffff81f1443530 : 0xffffff7f83eceeaa
0xffffff81f1443570 : 0xffffff7f83ecef1a
0xffffff81f14435e0 : 0xffffff7f841039e2
0xffffff81f1443650 : 0xffffff7f83ef1985
0xffffff81f1443670 : 0xffffff7f83e0b6ad
0xffffff81f1443720 : 0xffffff7f83e091b8
0xffffff81f1443920 : 0xffffff7f83e0ab07
0xffffff81f14439f0 : 0xffffff7f84cdd33b
0xffffff81f1443ac0 : 0xffffff7f84c6ebeb
0xffffff81f1443af0 : 0xffffff7f84c6d3d4
0xffffff81f1443b70 : 0xffffff80038cf50a
0xffffff81f1443b90 : 0xffffff80038d006e
0xffffff81f1443bf0 : 0xffffff80038cdabf
0xffffff81f1443d40 : 0xffffff80034b66a8
0xffffff81f1443e50 : 0xffffff8003426bf1
0xffffff81f1443e80 : 0xffffff80034139f5
0xffffff81f1443ef0 : 0xffffff800341e043
0xffffff81f1443f70 : 0xffffff80034c989d
0xffffff81f1443fb0 : 0xffffff80034f3c76
Kernel Extensions in backtrace:
com.apple.driver.AppleMuxControl(3.5.26)[B67CD59F-1344-37BC-8A9A-46D6D3DCA13D]@ 0xffffff7f856e7000->0xffffff7f856fafff
dependency: com.apple.driver.AppleGraphicsControl(3.5.26)[C0F9A79F-167E-3A68-873C-5CE17B97F B11]@0xffffff7f856df000
dependency: com.apple.iokit.IOACPIFamily(1.4)[045D5D6F-AD1E-36DB-A249-A346E2B48E54]@0xfffff f7f846e2000
dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f83abe000
dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f83d5b000
dependency: com.apple.driver.AppleBacklightExpert(1.0.4)[E04639C5-D734-3AB3-A682-FE66694C66 53]@0xffffff7f856e2000
com.apple.nvidia.driver.NVDAResman(8.2.6)[DB59C243-61DE-3B0C-86C3-6D89446F6F14] @0xffffff7f83db4000->0xffffff7f84027fff
dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f83abe000
dependency: com.apple.iokit.IONDRVSupport(2.4.1)[B93BBFC9-9ED5-3DDD-8CED-5EDA081BB997]@0xff ffff7f83d9e000
dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f83d5b000
dependency: com.apple.AppleGraphicsDeviceControl(3.5.26)[E971FED4-805F-3462-9D93-1919EBE3DC 82]@0xffffff7f83dae000
com.apple.nvidia.driver.NVDAGK100Hal(8.2.6)[AE5D65B5-1E26-3509-97B9-C68D97C2114 3]@0xffffff7f84033000->0xffffff7f841dffff
dependency: com.apple.nvidia.driver.NVDAResman(8.2.6)[DB59C243-61DE-3B0C-86C3-6D89446F6F14] @0xffffff7f83db4000
dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f83abe000
com.apple.iokit.IOAcceleratorFamily(98.20)[A9B0998E-C32B-3A6C-A194-B6C735138446 ]@0xffffff7f84c57000->0xffffff7f84caffff
dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f83abe000
dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f83d5b000
com.apple.GeForce(8.2.6)[DEF6CC39-4A5E-3BED-AF24-986B5A653FEE]@0xffffff7f84cbc0 00->0xffffff7f84d4afff
dependency: com.apple.iokit.IOAcceleratorFamily(98.20)[A9B0998E-C32B-3A6C-A194-B6C735138446 ]@0xffffff7f84c57000
dependency: com.apple.iokit.IOPCIFamily(2.9)[244D4E48-78E6-3369-8D76-285C66EF9BF4]@0xffffff 7f83abe000
dependency: com.apple.iokit.IONDRVSupport(2.4.1)[B93BBFC9-9ED5-3DDD-8CED-5EDA081BB997]@0xff ffff7f83d9e000
dependency: com.apple.nvidia.driver.NVDAResman(8.2.6)[DB59C243-61DE-3B0C-86C3-6D89446F6F14] @0xffffff7f83db4000
dependency: com.apple.iokit.IOGraphicsFamily(2.4.1)[B889D3AB-CCC0-3FCD-A83E-D2E3E4CB537B]@0 xffffff7f83d5b000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
13D65
Kernel version:
Darwin Kernel Version 13.2.0: Thu Apr 17 23:03:13 PDT 2014; root:xnu-2422.100.13~1/RELEASE_X86_64
Kernel UUID: ADD73AE6-88B0-32FB-A8BB-4F7C8BE4092E
Kernel slide: 0x0000000003200000
Kernel text base: 0xffffff8003400000
System model name: MacBookPro10,1 (Mac-C3EC7CD22292981F)
System uptime in nanoseconds: 19073043831456
last loaded kext at 18040745522033: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7f85870000, size 49152)
last unloaded kext at 18114078820583: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7f85870000, size 32768)
loaded kexts:
com.github.osxfuse.filesystems.osxfusefs 2.6.4
org.virtualbox.kext.VBoxNetAdp 4.3.12
org.virtualbox.kext.VBoxNetFlt 4.3.12
org.virtualbox.kext.VBoxUSB 4.3.12
org.virtualbox.kext.VBoxDrv 4.3.12
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AppleBluetoothMultitouch 80.14
com.apple.driver.AudioAUUC 1.60
com.apple.filesystems.autofs 3.0
com.apple.iokit.IOBluetoothSerialManager 4.2.4f1
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AppleMikeyDriver 2.6.1f2
com.apple.driver.AppleHDA 2.6.1f2
com.apple.driver.AGPM 100.14.15
com.apple.driver.ApplePlatformEnabler 2.0.9d1
com.apple.driver.X86PlatformShim 1.0.0
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.driver.AppleMCCSControl 1.1.12
com.apple.GeForce 8.2.6
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.4f1
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.AppleIntelHD4000Graphics 8.2.6
com.apple.driver.AppleIntelFramebufferCapri 8.2.6
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleMuxControl 3.5.26
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.driver.AppleUSBTCButtons 240.2
com.apple.driver.AppleUSBTCKeyboard 240.2
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.5.1
com.apple.driver.AppleUSBHub 666.4.0
com.apple.driver.AppleSDXC 1.5.2
com.apple.driver.AirPort.Brcm4331 700.20.22
com.apple.driver.AppleAHCIPort 3.0.0
com.apple.driver.AppleUSBEHCI 660.4.0
com.apple.driver.AppleUSBXHCI 677.4.0
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 217.92.1
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 217.92.1
com.apple.driver.IOBluetoothHIDDriver 4.2.4f1
com.apple.driver.AppleMultitouchDriver 245.13
com.apple.kext.triggers 1.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.6
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.driver.DspFuncLib 2.6.1f2
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.driver.AppleSMBusController 1.0.11d1
com.apple.iokit.IOAcceleratorFamily 98.20
com.apple.nvidia.driver.NVDAGK100Hal 8.2.6
com.apple.nvidia.driver.NVDAResman 8.2.6
com.apple.driver.AppleHDAController 2.6.1f2
com.apple.iokit.IOHDAFamily 2.6.1f2
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.4f1
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.X86PlatformPlugin 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.7.0d11
com.apple.iokit.IOAcceleratorFamily2 98.20
com.apple.AppleGraphicsDeviceControl 3.5.26
com.apple.iokit.IOSurface 91.1
com.apple.iokit.IOBluetoothFamily 4.2.4f1
com.apple.driver.AppleSMC 3.1.8
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.driver.AppleGraphicsControl 3.5.26
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.driver.AppleUSBMultitouch 240.9
com.apple.iokit.IOUSBHIDDriver 660.4.0
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.driver.CoreStorage 380
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.2.7
com.apple.iokit.IO80211Family 630.35
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.iokit.IOUSBFamily 677.4.0
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.pthread 1
Model: MacBookPro10,1, BootROM MBP101.00EE.B02, 4 processors, Intel Core i7, 2.3 GHz, 16 GB, SMC 2.3f36
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In
Graphics: NVIDIA GeForce GT 650M, NVIDIA GeForce GT 650M, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D5434314753364D465238432D50422020
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x80AD, 0x484D5434314753364D465238432D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xEF), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.4f1 13674, 3 services, 23 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM256E, 251 GB
USB Device: Hub
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Hub
USB Device: Apple Internal Keyboard / Trackpad
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: USB Receiver
Thunderbolt Bus: MacBook Pro, Apple Inc., 11.1nuoyapapa,
if the bug exists in Apple’s code, then there’s nothing that can be done about it but to wait for an update from Apple. Given the loaded kernel extensions shown in the crash report, the only things which you could affect are VirtualBox and FUSE for OS X. Since you have the latest version of VirtualBox installed, and I haven’t seen similar GPU panics reported involving that version of VirtualBox, that led me to suggest experimenting with FUSE for OS X first. Since it’s a GPU panic, you could try disabling VirtualBox if you think that it’s more likely to be the cause than FUSE for OS X. -
Which port to use for the peer-keep alive
Hi All,
We have 2 Nexus 6001s in our data center.
The management port of each 6001 is connected to the other and this link is used as the peer keep alive link.
My colleague is suggesting that we use one of the inline data ports as the keep alive link.
Can you please advise on the pros and cons of using management/inline port as keep live link and the best practise to follow in this case?
Thanks,
PeteHi Pete,
Here are the best recommendation in order of preference.
1. Use mgmt0 (along with management traffic)
* Pros: whats good on this option is you are totally separating the VPC Peer keepalive link on another VRF (management) and does not mingle with the data or global vrf..
* Cons: VPC PKL is dependent on the OOB management switch.
2. Use dedicated 1G/10GE front panel ports.
* Pros - can just be a direct link between the N6K pair and not dependent on other boxes.
* Cons - you need extra SFPs for VPC PKL while the VPC PKL traffic join the global VRF.
HTH
Jay Ocampo -
Nexus 7000 - Moving vPC keep alive
We have two Nexus 7010 switches running a vPC domain between the two switches. On one of the 7010B, the peer keep alive (from the mgmt VRF) is connected to a 3560B *and* that 3560B also has a data connection back to the same 7010B. Everything is fine with that setup.
Our second 7010A, the peer keep alive link is also connected to a coresponding 3560A switch. However, that 3560A switch is not connected to 7010A.
I want to move the uplink from the 3560A from where it is to the 7010A which will break the keep alive. However, I will not be breaking the vPC peer link as it is a pair of 10G connections between the two 7010 switches.
I have read that the vPC won't come up unless the peer keep alive is present, but it wasn't clear about taking down the keep alive link momentarily. Moving the cable would be quick, but I know the mac table will need to update since 7010B switch will now see the keep alive across it's peer link instead of some other direction.
Can I take the peer keep alive link down providing the peer link stays up?
We are running kickstart and system version 5.0(3).
Thanks!
/alanPeer keepalive works on UDP port 3200 over IP with 1 sec interval and 5 sec timeout.
Iit is not requirement to have peer-keepalive destination IP in same subnet but if you do not have it in same subnet then you need to make sure you route it properly and your IP routed infrastructure that carries keeplive satisfies above requirement to make sure not a single event cause on that IP infrastructure causes keeplives to loose packets since peer-keepalive is UDP it is not reliable delivery method.
Recommendation in past i heard was to use your managemet ports as peer-keepalive. But one problem happens during ISSU with dual sup, the each supervisor reboots and after it comes up role of active and standby gets switch at the end. So If you did not connect two managment ports(one from each supervisor) to your management network then you will loose keepalives during software upgrade because supervisor switch over occurs and new maangement port becomes active.
So second recomendation is to create one peer-keepalive vrf so that it will have its own address space, if you have M1 1 gig card in each switch then connect one cable between switch and assign IP address (like 1.1.1.1-2/30) and put it in peer-keepalive vrf. With this set up during ISSU you do not loose peer keepalives because line cards does not need to reboot and your peer-keepalive UDP traffic will not depend on any other switch or router. -
Nexus 7000 vPC modification - avoiding type1 inconsistencies
Hi Everyone,
I need to configure some features on a pair of Nexus 7000's running 4.2(6) - one of them is Root Guard.
I am aware that when I enable Root Guard on the first vPC peer, the vPC will go into suspended state until I configure the other vPC peer identically.
This is causing me a big service disruption headache as I need to do this for a whole Data Centre.
I see on the Nexus 5k, you can do port-profiles which seems to enabled config synchronisation across vPC peers - so I assume the vPC would stay up due to both peers receiving config at exactly the same time - but this feature is not available on Nexus 7k.
Does anybody know for sure if I were to create a scheduled job to run at the same time on both vPC peers with identical config content - i.e. apply Root Guard to vPC - would this prevent the vPC going into suspend state?
If not, do you know of any other ways to prevent vPC going into suspend?
Thanks in advance for any advice!Hi Raj,
thankyou for your response.
We have VPC between Core - Aggregation - all 7k and Aggregation to Access (5ks). VPC down from Core all the way to Access and also up all the way from Access to Core.
So from a STP point of view, the topology is a single switch for Core, Aggregation and Access - so no loops.
I agree this limits the potential for trouble if a switch is plugged into the access layer by mistake for example - but the customer is adamant they want it (RootGuard).
Thanks,
Oswaldo -
Nexus 7000 with VPC and HSRP Configuration
Hi Guys,
I would like to know how to implement HSRP with the following setup:
There are 2 Nexus 7000 connected with VPC Peer link. Each of the Nexus 7000 has a FEX attached to it.
The server has two connections going to the FEX on each Nexus 7k (VPC). FEX's are not dual homed as far as I now they are not supported currently.
R(A) R(S)
| |
7K Peer Link 7K
| |
FEX FEX
Server connected to both FEX
The question is we have two routers connected to each of the Nexus 7k in HSRP (active and one is standby). How can I configure HSRP on the nexus switches and how the traffic will routed from the Standby Nexus switch to Active Nexus switch (I know HSRP works differently here as both of them can forward packets). Will the traffic go to the secondary switch and then via the peer link to the active switch and then to the active router ? (From what I read the packet from end hosts which will go via the peer link will get dropped)
Has anyone implemented this before ?
ThanksHi Kuldeep,
If you intend to put those routers on a non-vpc vlan, you may create a new inter-switch trunk between the N7K and allow that non-vpc vlan . However if those will be on a VPC vlan, best to create two links to the N7K pair and create a VPC, otherwise configure those ports as orphan ports which will leverage the VPC peer link .
HTH
Jay Ocampo -
Frame generated by Nexus 7000 contains unexpected trailer when using GRE
I have observed some unexpected behaviour on a Nexus 7000 running 6.1(2) in respect of the Ethernet II frame generated when the Nexus 7000 is a GRE Tunnel endpoint.
The device receiving the Frame is discarding it and I waiting for the vendor to confirm the reason for this discard. However in case the reason is due to the Ethernet frame being "unusual" I am curious if any one else has come across this.
To generate the Frame I perform a ping (on a workstation) which the Nexus 7000 in encapsulating in a GRE tunnel. Using Wireshark on the Nexus 7000 egress interface I observed that the Frame contains the following protocols as expected; ETH:IP:GRE:IP:ICMP:data
When I issue the command "ping -l 1" on the workstation the Frame details from Wireshark are:
Frame 84 bytes on wire
Total IP payload = 53 bytes
Outer IP header (20 bytes)
GRE ( 4 bytes)
Inner IP header (20 bytes)
ICMP (header 8 bytes payload 1 byte)
Ethernet Trailer length = 17 bytes
What is curious about this Frame is that;
a) No Ethernet Trailer is needed as the IP payload exceeds 46 bytes
b) The amount of padding applied is what would be needed if the Inner IP datagram were encapsulated directly in an Ethernet II Frame. The Inner ip datagram is 29 bytes octets and hence padding needed = 46 - 29 = 17.
By doing ping sweep from length 1 to 18 the observed padding was;
1,17
2,16
3,15
17,1
18,0
So it would appear that the Nexus is adding padding to the Ethernet frame as though it were containing the pre GRE payload only.What module are you using?
Ron -
Nexus 7000 and 2000. Is FEX supported with vPC?
I know this was not supported a few months ago, curious if anything has changed?
Hi Jenny,
I think the answer will depend on what you mean by is FEX supported with vPC?
When connecting a FEX to the Nexus 7000 you're able to run vPC from the Host Interfaces of a pair of FEX to an end system running IEEE 802.1AX (802.3ad) Link Aggregation. This is shown is illustration 7 of the diagram shown on the post Nexus 7000 Fex Supported/Not Supported Topologies.
What you're not able to do is run vPC on the FEX Network Interface that connect up to the Nexus 7000 i.e., dual-homing the FEX to two Nexus 7000. This is shown in illustrations 8 and 9 of under the FEX topologies not supported on the same page.
There's some discussion on this in the forum post DualHoming 2248TP-E to N7K that explains why it's not supported, but essentially it offers no additional resilience.
From that post:
The view is that when connecting FEX to the Nexus 7000, dual-homing does not add any level of resilience to the design. A server with dual NIC can attach to two FEX so there is no need to connect the FEX to two parent switches. A server with only a single NIC can only attach to a single FEX, but given that FEX is supported by a fully redundant Nexus 7000 i.e., SE, fabrics, power, I/O modules etc., the availability is limited by the single FEX and so dual-homing does not increase availability.
Regards -
Nexus 7000 Supervisor Management Port
Hi,
I have a deployment with 2 x Nexus 7009. Both N7K's have dual supervisor modules.
Each Supervisor Module is connected to alternate management switches.
Supervisor 1 is connected to Management Switch 1
Supervisor 2 is connected to Management Switch 2
In the event of a failure of Management Switch 1, access to Supervisor 1 is lost and in turn all access to the N7K.
Is there any method of achieving connectivity to the Active Supervisor (1) when this scenario occurs.Can connectivity be achieved via the Standby Supervisor (other than making the Standby Supervisor the Active Supervisor).
Thanks,
ColmThat is the correct behavior. As long as the primary sup is up, you will see the mgmt0 for the primary Sup up. The second you fail over to the stand-by sup, the mgmt0 for that sup will come up and the old primary will go down. So, it is only one mgmt0 is up at a time.
Make sure both mgmt0 interfaces are in the same vlan and also port fast is turned on so the mgmt ports comes up as soon as possible.
HTH -
Nexus 7000 vPC suspended VLAN problem
I am trying to connect a Cat3560G switch to an N7K pair via a vPC. The VLANs I wish to trunk are being suspended, I am getting the following error messages:
2010 Jun 22 17:03:36 N7K-Core1 %ETHPORT-3-IF_ERROR_VLANS_SUSPENDED: VLANs 2,301 on Interface port-channel2 are being suspended. (Reason: Vlan is not allowed on Peer-link)
The VLANs do exist , but a STP instance isnt created for it (I am using RPVST);
N7K-Core1# sh vlan id 2
VLAN Name Status Ports
2 VLAN0002 active Po2, Po75
N7K-Core1# sh spanning-tree vlan 2
ERROR: Spanning tree instance(s) for vlan does not exist.
Port Vlans Err-disabled on Trunk
Eth1/9 none
Eth1/10 none
Eth1/17 2,301
Eth1/18 2,301
Eth1/25 2,301
Eth1/26 2,301
Eth2/2 none
Eth10/1 none
Eth10/2 2,301
Po2 2,301
Po75 2,301
Po99 none
The VLANs are allowed on the trunk (it by default allows all)
interface port-channel1
description * vPC Peer-Link *
vpc peer-link
spanning-tree port type network
I have turned off bridge assurance as a test but no no avail.
Any ideas?I'm having the same issue between a pair of vPC'd 5020s going to a 6500 using a vPC.
All VLANs which are supposed to go over the trunk/vPC, are showing as err-disable on trunk. I've checked all configs and they are the same... allowed vlans match on all po interfaces and physical interfaces.
6509:
interface Port-channel78
description Connection to n5020s @ in the MDC
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 2240
switchport trunk allowed vlan 2002-2006,2010,2014,2018,2022,2024,2026,2240
switchport trunk allowed vlan add 2244,2248,2252,2254,4050,4052,4054
switchport mode trunk
end
N5020-1:
interface port-channel100
description Uplink to dist01 @ A building
switchport mode trunk
switchport trunk native vlan 2240
switchport trunk allowed vlan 2002-2006,2010,2014,2018,2022,2024
switchport trunk allowed vlan add 2026,2240,2244,2248,2252,2254,4050
switchport trunk allowed vlan add 4052,4054
vpc 100
N5020-2:
interface port-channel100
description Uplink to dist01 @ A building
switchport mode trunk
switchport trunk native vlan 2240
switchport trunk allowed vlan 2002-2006,2010,2014,2018,2022,2024
switchport trunk allowed vlan add 2026,2240,2244,2248,2252,2254,4050
switchport trunk allowed vlan add 4052,4054
vpc 100
All member ports reflect the correct config.
Both 5020s have the same config for the peer-link:
interface port-channel2
description VPC Peer-link
vpc peer-link
spanning-tree port type network
Output form 'show interface trunk"
n5020-1# sh int tru
Port Native Status Port
Vlan Channel
Eth1/1 2240 trnk-bndl Po100
Eth1/2 1 trnk-bndl Po200
Eth1/17 2240 trnk-bndl Po78
Eth1/18 2240 trnk-bndl Po78
Eth1/19 2240 trnk-bndl Po87
Eth1/20 2240 trnk-bndl Po87
Po78 2240 trunking --
Po87 2240 trunking --
Po100 2240 trunking --
Po200 1 trunking --
Port Vlans Allowed on Trunk
Eth1/1 2002-2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2254,4
050,4052,4054
Eth1/2 180-183
Eth1/17 180-183
Eth1/18 180-183
Eth1/19 2002-2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2254,4
050,4052,4054
Eth1/20 2002-2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2254,4
050,4052,4054
Po78 180-183
Po87 2002-2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2254,4
050,4052,4054
Po100 2002-2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2254,4
050,4052,4054
Po200 180-183
Port Vlans Err-disabled on Trunk
Eth1/1 2002-2004,2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2
254,4050,4052,4054
Eth1/2 180-183
Eth1/17 180-183
Eth1/18 180-183
Eth1/19 2002-2004,2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2
254,4050,4052,4054
Eth1/20 2002-2004,2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2
254,4050,4052,4054
Po78 180-183
Po87 2002-2004,2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2
254,4050,4052,4054
Po100 2002-2004,2006,2010,2014,2018,2022,2024,2026,2240,2244,2248,2252,2
254,4050,4052,4054
Po200 180-183
Port STP Forwarding
Eth1/1 none
Eth1/2 none
Eth1/17 none
Eth1/18 none
Eth1/19 none
Eth1/20 none
Po78 none
Po87 none
Po100 none
Po200 none
Thank you,
Chris Perkins
INX Inc. -
Windows often undergoes unexpected shutdown during work!!
I was using windows xp for 2 years with just 1GB RAM and i upgraded it to windows 7. Since then i am not able to work consistently since my windows is shutting down half way at random. Then i upgraded my RAM to one more GigaBytes. Still my problem
exist. ALso i am not sure whether it is because of absence of ups since the time i upgraded. I also tried for so many solutions yet nothing worked with my pc..Hi!
Unexpected shutdowns can be linked many different things, are you doing something specific at the time, for example using applications that require a lot of CPU or RAM?
In most cases it's linked to the CPU becoming to hot or a faulty RAM module.
Open up the event viewer and browse to "System"
Are there any errors at the time of the computer rebooting?
Best regards
Andreas Molin
Andreas Molin | Site: www.guidestomicrosoft.com | Twitter: andreas_molin -
Thinkpad x1 carbon unexpected shutdown and freezing during manual shutdown
Ever since i got my x1 carbon i've been experiencing constant unexpected shutdown issues. Ill leave my laptop on for a few minutes unused and when i come back it'll be turned off and when started back up it will prompt me that the computer has recovered from a unexpected shutdown. There are also numerous of times where i would attempt to put my laptop to sleep or shut it down manually and the screen will go black, however the laptop doesnt shutdown or goes into sleep mode, but instead freezes with a black screen. I've sent in my x1 carbon in once due to a harddrive failure where the computer wont even start up windows at all, the technician informed me that they put a new ssd in and ever since i got it back these issues still occur. Can some one please help me here? these occurance are getting more frequent and i'm afraid i might have to send in my laptop again due to harddrive failure.
Hi, kuelderrek
Could you possibly go into Event Viewer and look at the Windows Logs, and then take a screenshot of these logs and post them here? I'd also recommend making sure all the drivers for your system are up to date, just to make sure they are not causing any issues. You can find all the drivers for your system here.
Best,
Adam
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