6500-VSS and NEXUS 56XX vPC interoperability

Hello, is it possible to establish a PORT CHANNEL between a couple of Cisco 6500 running VSS mode and a couple of NEXUS 5000 running vPC? . Design should be " Back-to-Back" : VSS-- Port-Channel--vPC.
I want also to support L2 and L3 flows between the two couples.
I read many forums but i am not sure it runs.
Is such design, if it runs; supported by Cisco?
Thanks a lot for your help.

Hi Tlequertier,
We have VSS 6509Es with Sup 2Ts & 6908 modules. These have a 40gb/sec (4 x 10gb/sec) uplink to our NEXUS 5548UP vPC switches.
So we have a fully meshed ether-channel between the 4 physical switches (2 x N5548UP & 2x6509E)
Kind regards,
Tim

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Two Nexus 5020 vPC etherchannel with Two Catalyst 6500 VSS

Hi,
we are fighting with an 40 Gbps etherchannel between 2 Nx 5000 and 2 Catalyst 6500 but the etherchannel never comes up. Here is the config:
NK5-1
interface port-channel30
description Trunk hacia VSS 6500
switchport mode trunk
vpc 30
switchport trunk allowed vlan 50-54
speed 10000
interface Ethernet1/3
switchport mode trunk
switchport trunk allowed vlan 50-54
beacon
channel-group 30
interface Ethernet1/4
switchport mode trunk
switchport trunk allowed vlan 50-54
channel-group 30
NK5-2
interface port-channel30
description Trunk hacia VSS 6500
switchport mode trunk
vpc 30
switchport trunk allowed vlan 50-54
speed 10000
interface Ethernet1/3
switchport mode trunk
switchport trunk allowed vlan 50-54
beacon
channel-group 30
interface Ethernet1/4
switchport mode trunk
switchport trunk allowed vlan 50-54
beacon
channel-group 30
Catalyst 6500 VSS
interface Port-channel30
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 50-54
interface TenGigabitEthernet2/1/2
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 50-54
channel-protocol lacp
channel-group 30 mode passive
interface TenGigabitEthernet2/1/3
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 50-54
channel-protocol lacp
channel-group 30 mode passive
interface TenGigabitEthernet1/1/2
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 50-54
channel-protocol lacp
channel-group 30 mode passive
interface TenGigabitEthernet1/1/3
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 50-54
channel-protocol lacp
channel-group 30 mode passive
The "Show vpc 30" is as follows
N5K-2# sh vpc 30
vPC status
id     Port        Status Consistency Reason                     Active vlans
30     Po30        down* success     success                    -
But the "Show vpc Consistency-parameters vpc 30" is
N5K-2# sh vpc consistency-parameters vpc 30
    Legend:
        Type 1 : vPC will be suspended in case of mismatch
Name                             Type Local Value            Peer Value
Shut Lan                              1     No                     No
STP Port Type                    1     Default                Default
STP Port Guard                  1     None                   None
STP MST Simulate PVST 1     Default                Default
mode                                    1     on                     -
Speed                                  1     10 Gb/s                -
Duplex                                   1     full                   -
Port Mode                            1     trunk                  -
Native Vlan                           1     1                      -
MTU                                       1     1500                   -
Allowed VLANs                    -     50-54                  50-54
Local suspended VLANs    -     -                      -
We will apreciate any advice,
Thank you very much for your time...
Jose

Hi Lucien,
here is the "show vpc brief"
N5K-2# sh vpc brief
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link
vPC domain id                   : 5
Peer status                     : peer adjacency formed ok
vPC keep-alive status           : peer is alive
Configuration consistency status: success
Per-vlan consistency status     : success
Type-2 consistency status       : success
vPC role                        : secondary
Number of vPCs configured       : 2
Peer Gateway                    : Disabled
Dual-active excluded VLANs      : -
Graceful Consistency Check      : Enabled
vPC Peer-link status
id   Port   Status Active vlans
1    Po5    up     50-54
vPC status
id     Port        Status Consistency Reason                     Active vlans
30     Po30        down* success     success                    -
31     Po31        down* failed      Consistency Check Not      -
                                      Performed
*************************************************************************+
*************************************************************************+
N5K-1# sh vpc brief
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link
vPC domain id                   : 5
Peer status                     : peer adjacency formed ok
vPC keep-alive status           : peer is alive
Configuration consistency status: success
Per-vlan consistency status     : success
Type-2 consistency status       : success
vPC role                        : primary
Number of vPCs configured       : 2
Peer Gateway                    : Disabled
Dual-active excluded VLANs      : -
Graceful Consistency Check      : Enabled
vPC Peer-link status
id   Port   Status Active vlans
1    Po5    up     50-54
vPC status
id     Port        Status Consistency Reason                     Active vlans
30     Po30        down* failed      Consistency Check Not      -
                                      Performed
31     Po31        down* failed      Consistency Check Not      -
                                      Performed
I have changed the lacp on both devices to active:
On Nexus N5K-1/-2
interface Ethernet1/3
switchport mode trunk
switchport trunk allowed vlan 50-54
channel-group 30 mode active
interface Ethernet1/4
switchport mode trunk
switchport trunk allowed vlan 50-54
channel-group 30 mode active
On Catalyst 6500
interface TenGigabitEthernet2/1/2-3
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 50-54
switchport mode trunk
channel-protocol lacp
channel-group 30 mode active
interface TenGigabitEthernet1/1/2-3
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 50-54
switchport mode trunk
channel-protocol lacp
channel-group 30 mode active
Thanks for your time.
Jose

Ask the Expert: Different Flavors and Design with vPC on Cisco Nexus 5000 Series Switches

Welcome to the Cisco® Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about Cisco® NX-OS.
The biggest limitation to a classic port channel communication is that the port channel operates only between two devices. To overcome this limitation, Cisco NX-OS has a technology called virtual port channel (vPC). A pair of switches acting as a vPC peer endpoint looks like a single logical entity to port channel attached devices. The two devices that act as the logical port channel endpoint are actually two separate devices. This setup has the benefits of hardware redundancy combined with the benefits offered by a port channel, for example, loop management.
vPC technology is the main factor for success of Cisco Nexus® data center switches such as the Cisco Nexus 5000 Series, Nexus 7000 Series, and Nexus 2000 Series Switches.
This event is focused on discussing all possible types of vPC along-with best practices, failure scenarios, Cisco Technical Assistance Center (TAC) recommendations and troubleshooting
Vishal Mehta is a customer support engineer for the Cisco Data Center Server Virtualization Technical Assistance Center (TAC) team based in San Jose, California. He has been working in TAC for the past 3 years with a primary focus on data center technologies, such as the Cisco Nexus 5000 Series Switches, Cisco Unified Computing System™ (Cisco UCS®), Cisco Nexus 1000V Switch, and virtualization. He presented at Cisco Live in Orlando 2013 and will present at Cisco Live Milan 2014 (BRKCOM-3003, BRKDCT-3444, and LABDCT-2333). He holds a master’s degree from Rutgers University in electrical and computer engineering and has CCIE® certification (number 37139) in routing and switching, and service provider.
Nimit Pathak is a customer support engineer for the Cisco Data Center Server Virtualization TAC team based in San Jose, California, with primary focus on data center technologies, such as Cisco UCS, the Cisco Nexus 1000v Switch, and virtualization. Nimit holds a master's degree in electrical engineering from Bridgeport University, has CCNA® and CCNP® Nimit is also working on a Cisco data center CCIE® certification While also pursuing an MBA degree from Santa Clara University.
Remember to use the rating system to let Vishal and Nimit know if you have received an adequate response.
Because of the volume expected during this event, Vishal and Nimit might not be able to answer every question. Remember that you can continue the conversation in the Network Infrastructure Community, under the subcommunity LAN, Switching & Routing, shortly after the event. This event lasts through August 29, 2014. Visit this forum often to view responses to your questions and the questions of other Cisco Support Community members.

Hello Gustavo
Please see my responses to your questions:
Yes almost all routing protocols use Multicast to establish adjacencies. We are dealing with two different type of traffic –Control Plane and Data Plane.
Control Plane: To establish Routing adjacency, the first packet (hello) is punted to CPU. So in the case of triangle routed VPC topology as specified on the Operations Guide Link, multicast for routing adjacencies will work. The hellos packets will be exchanged across all 3 routers and adjacency will be formed over VPC links
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/operations/n5k_L3_w_vpc_5500platform.html#wp999181
Now for Data Plane we have two types of traffic – Unicast and Multicast.
The Unicast traffic will not have any forwarding issues, but because the Layer 3 ECMP and port channel run independent hash calculations there is a possibility that when the Layer 3 ECMP chooses N5k-1 as the Layer 3 next hop for a destination address while the port channel hashing chooses the physical link toward N5k-2. In this scenario,N5k-2 receives packets from R with the N5k-1 MAC as the destination MAC.
Sending traffic over the peer-link to the correct gateway is acceptable for data forwarding, but it is suboptimal because it makes traffic cross the peer link when the traffic could be routed directly.
For that topology, Multicast Traffic might have complete traffic loss due to the fact that when a PIM router is connected to Cisco Nexus 5500 Platform switches in a vPC topology, the PIM join messages are received only by one switch. The multicast data might be received by the other switch.
The Loop avoidance works little different across Nexus 5000 and Nexus 7000.
Similarity: For both products, loop avoidance is possible due to VSL bit
The VSL bit is set in the DBUS header internal to the Nexus.
It is not something that is set in the ethernet packet that can be identified. The VSL bit is set on the port asic for the port used for the vPC peer link, so if you have Nexus A and Nexus B configured for vPC and a packet leaves Nexus A towards Nexus B, Nexus B will set the VSL bit on the ingress port ASIC. This is not something that would traverse the peer link.
This mechanism is used for loop prevention within the chassis.
The idea being that if the port came in the peer link from the vPC peer, the system makes the assumption that the vPC peer would have forwarded this packet out the vPC-enabled port-channels towards the end device, so the egress vpc interface's port-asic will filter the packet on egress.
Differences: In Nexus 5000 when it has to do L3-to-L2 lookup for forwarding traffic, the VSL bit is cleared and so the traffic is not dropped as compared to Nexus 7000 and Nexus 3000.
It still does loop prevention but the L3-to-L2 lookup is different in Nexus 5000 and Nexus 7000.
For more details please see below presentation:
https://supportforums.cisco.com/sites/default/files/session_14-_nexus.pdf
DCI Scenario: If 2 pairs are of Nexus 5000 then separation of L3/L2 links is not needed.
But in most scenarios I have seen pair of Nexus 5000 with pair of Nexus 7000 over DCI or 2 pairs of Nexus 7000 over DCI. If Nexus 7000 are used then L3 and L2 links are required for sure as mentioned on above presentation link.
Let us know if you have further questions.
Thanks,
Vishal

Double-sided vpc Nexus7K and NExus 5K

I have two 5548UP connected to two Nexus 7k forming double sided vPC design. The 5k is acting as access layer top of the rack and 7k as aggregate. The 7k is configured with vrf contexts and vlans with vrrp.
I followed the best practices for double-sided vpc described in this document
http://www.cisco.com/c/dam/en/us/td/docs/switches/datacenter/sw/design/vpc_design/vpc_best_practices_design_guide.pdf
I'm using the same port-channel-id and vpc-id in all 4 devices. I also have different vpc domain-ids for the N5K (domain-id:20) and N7K (domain-id:10)
All physical connectivity has been verified. I have 16-ports port-channels (8 ports on each peer)
I have also verified all vpc status: show vpc, show vpc consistency-parameters global, and everything looks good int both N5K and N7K: keepalive is alive, peer adjacency formed ok, all consistency status are success, etc
I have also checked port-channel configurations and each individual interface member of the port-channel
The problem I have is the port-channel in the N7K is no coming up and I just can't figure out why. I've checked all I can think of, and tried different things and the only way I can bring the port-channel up is if I shutdown all interfaces in the N5K connecting to the N7K except those between 5K-1 and 7K1 (primary devices) and remove the "vpc 31" command under port-channel 31
In the Nexus5K, things looks good, this is what I see when I check the status of the vpc
vPC status
id     Port        Status Consistency Reason                     Active vlans
31     Po31        up     success     success                    14-16,24,28
                                                                 -31
However, in the N7K this is what I get. There are not consistency errors, but still the status of the port-channel is down.
vPC status
id   Port      Status Consistency Reason                  Active vlans
31   Po31      down   success     success                    -
sh int po31
port-channel31 is down (inactive)
admin state is up
vPC Status: Up, vPC number: 31
Any ideas what could be wrong? has anyone experienced similar issue?
Any suggestions are welcome.

Could you provide a quick diagram and the output of 'show port-channel summary' on both switches.

6500 VSS Chassis in unknown state

Hi,
we have 6500 chassises in our set up. But using CWLMS 4.0 , we are unable to manage VSS feature of 6500.Also
User tracking for Nexus 7K Switches subnets are not working.
Please guide.
Rgrds,
Soumik.

Hi,
Would you mind posting some more information about the VSS problem. (Exact steps or maybe a screenshot of what you are doing). I didn't have any major issues configuring Cisco 6500 VSS in LMS or NCS. Minor ones were some SNMP MIBs which you can simply ignore.
Predrag Petrovic

Installing New network card on a Cisco Catalyst 6500 VSS mode

Hi All.
I need to install a new network card on Cisco Catalyst 6500 VSS mode, I need to follow any special procedures or is it only insert the new card and the Catalyst automatically recognizes the card?
Thank you So mucho.

Hi,
Just insert the blade and the switch should recognize it. For the 6500 series the blades are hot swap able.
HTH

LMS 4.0.1 - Inventory problem with 6500 VSS

Hello,
I have just made a fresh install of LMS 4.0. I installed the 4.0.1 version too. It is done on a Windows 2008 STD running a WM environment.
I have only one problem : I cannot get the inventory collection for a 6500 VSS chassis. It is discovered, I got the archive configuration, it is visible on the data topology and on CiscoView but when I try to collect it for the inventory I got the following message :
R2-C6509-01
Device Collection Failed.
Someone has an idea?
Thanks by advance,
Regards,
Abel JULIAN,
Nextiraone France.

Login to LMS, then point your browser to
http://SERVERIP:1741/rme/devices.do
select your device and click "Edit Device Attributes", then click "Inlide Edit" and adjust the SNMP timeout settings for this device; in a first step change it to 10 (default is 2); Save the settings by clicking "Modify" and on the next screen "Apply".
Retry Inventory Collection and see if it will be successful now.

Switch 6500 VSS

Hi,
I have a client with a couple of 6500 with supervisor 720-2B
Now he would activate a VSS between the 6500.
The supervisor don't support VSS and the question is: is there an upgrade for the 720-3B or he must change them ?
Best Regards
Claudio

Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
You'll need to replace the sup. The sup720 doesn't support VSS.
Also for VSS, only certain line cards are supported.

Issues with CWLMS 3.2 RME 4.3.1 cannot fetch vlan.dat off a VSS and 4510.

Hi,
I am having a major headache with RME collecting the vlan.dat from a VSS and 4510, the device and credentials work fine, however when archiving the config i get partial success due to vlan failing. You can see in the IC_Services log that it attempts to TFTP the .dat file off which it fails with, i believe vlan fetch is only supported by SSH or telnet
when you do a CDA test both devices pass on everything..

managed to log on and please see below, tftp on one device works fine but from the 4510 or vss still fails
GRA_CHUB_CR_01#copy cat4000_flash: tftp:
Source filename []? vlan.dat
Address or name of remote host []? 172.20.220.10
Destination filename [vlan.dat]?
%Error opening tftp://172.20.220.10/vlan.dat (Timed out)
GRA_CHUB_CR_01#
DAR_R002_AS_01#
DAR_R002_AS_01#copy flash:vlan.dat tftp:
Address or name of remote host []? 172.20.220.10
Destination filename [vlan.dat]?
616 bytes copied in 0.009 secs (68444 bytes/sec)
DAR_R002_AS_01#

HP 6500 Printer and prints very faintly.

I changed my ink cartridges in my HP 6500 printer and it now prints very faintly or when I send a test print to the printer from my computer it will only feed the paper thru the printer.

The document here may help resolve black not printing on your Officejet 6500. Be sure to check the vents as shown in solution three. If this does not resolve the issue the post here may help.
Bob Headrick, HP Expert
I am not an employee of HP, I am a volunteer posting here on my own time.
If your problem is solved please click the "Accept as Solution" button ------------V
If my answer was helpful please click the "Thumbs Up" to say "Thank You"--V

What are the differences between Easy VSS and Traditional VSS on Catalyst 4500E with Sup 8E ?

I would like to know which feature is different between Easy VSS and Traditional VSS.
I know "Easy VSS is a new way of implementing VSS by using a single command" but I cannot find more information about it.
Please help.
Thank you.
Nash

Easy VSS is a simplified and automated way of configuring VSS for first time. Once a VSS is configured then it same as traditional VSS in functionality.
There is no concept of layer 2 or layer 3 VSL link. VSL is the internal portchannel link and you cannot configure as layer 2 or layer 3 portchannel.
Following is the link of Easy VSS steps.
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/XE3-6-0E/15-22E/configuration/guide/xe-360-config/vss.html#60764

Basic questation about VSS and windows backup

hi all, basic questation about backup and VSS
Environment:
windows 2008r2,NAS backup disk connected with iSCSI
If i create in the windows backup server job , where i backup disk D , target is NAS disk and start it . Windows backup is requester and is created shadow copy . This shadow copy is created in the disk D or in the NAS disk ? If in the disk D is created for
everyone application snapshot ? After created snapshot the windows backup copy data from snapshot to windowsimagebackup ? And If windows backup create different snapshot how detect which files is changed ?
thank you
Falcon

Hi,
Windows Server Backup stores backup versions in volume shadow copies. After the data write is complete, Windows Server Backup creates a shadow copy of the volume where the backup is stored using Volume Shadow Copy Service (VSS). This shadow copy retains the
state of the storage volume as a “backup version” or “point-in-time” of the backup and must restore using this backup version.
You could refer to the article below to know the steps of a back up operation performs:
Backup Version and Space Management in Windows Server Backup
http://blogs.technet.com/b/filecab/archive/2009/06/22/backup-version-and-space-management-in-windows-server-backup.aspx
Windows Server Backup uses Volume Shadow Copy Service (VSS) and block-level backup technology to back up and recover your operating system, files and folders, and volumes. The Volume Shadow Copy Service is used to differentiate between backup sets, and to track
where the various blocks are being written to within the shadow copy storage.
For more information about the incremental backup technology, please see:
Learn more about system image backup
http://blogs.technet.com/b/filecab/archive/2009/10/31/learn-more-about-system-image-backup.aspx
Backup and Recovery Issues with Windows Server 2008 (Part 2)
http://www.windowsnetworking.com/articles-tutorials/windows-server-2008/Backup-Recovery-Issues-Windows-Server-2008-Part2.html
Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Best Regards,
Mandy
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

OfficeJet 6500 709n and MicroSoft Office 2010 duplex print problem

I have an OfficeJet 6500 709n and was able to automatically duplex print with Windows 2003 no problems. I upgraded to Windows 2010 and now it won't see the automatic duplex printing. I can only select single page printing and manual duplex printing. Any ideas what I need to correct???? HELP PLEASE!!

Hello,
Make sure the Automatic Duplexing option is enabled:
Enter Control Panel > Devices and Printers.
Right click the printer icon, then click Printer Properties.
Click the Device Settings tab.
Set the Automatic Two-Sided Duplex Accessory as installed and click OK to save the change.
Now Automatic Duplexing should become available.
Regards,
Shlomi
Say thanks by clicking the Kudos thumb up in the post.
If my post resolve your problem please mark it as an Accepted Solution

VSS and Infoblox

Hi !
We have 2 Infoblox in HA connect to a VSS and we recibe this log:
[2013/01/10 17:47:03.945] (24443 /infoblox/one/bin/clusterd) vrrp.c:1180 vrrp_process_receive_pkt(): DETECTED DUAL ACTIVE CONDITION!
The configuration on the VSS's interfaces are:
interface giga1/1/YY
des LAN 1
sw acc vlan X
spanning-tree portfast
speed 1000
duplex full
interface giga1/1/YY
des HA1
sw acc vlan X
spanning-tree portfast
speed 1000
duplex full
interface giga2/1/YY
des LAN 2
sw acc vlan X
spanning-tree portfast
speed 1000
duplex full
interface giga2/1/YY
des HA2
sw acc vlan X
spanning-tree portfast
speed 1000
duplex full
All the interfaces are connected but the infloblox shows an error on the HA2 port.
Thanks
Regards,

Yes, we resolved the issue. There was any bug in the VSS IOS but when we change the status Master-backup the vip dind't learnt the new mac.
We configured the mac on the two interfaces manually.
Thank you,
Regards

Skype not connecting Moto G and Nexus 4 in ANDROI...

I have Moto G 2nd Gen and Nexus 4 device with latest Android 5.0.2. I donwloaded Skype on both devices yesterday and installed them. Then I opened two new skype accounts and tried making a call from one device to other. My wife was on the other device. Neither a normal call or a video call was going. Skype wasnt connecting at all. The phone from where I was making call was ringing but not the phone receiving call. Can somebody please help.
Regards
Ashok Kumar

Unfortunately the truth is prepaid support is not very well trained and was
not much help
My issue was solved ultimately not by prepaid support but upper level
support in NJ (or NY, not sure).
The problem was that my line was provisioned as having a 1X device (which I
never had). So even though we tried switching the device to an iPhone and
reprogramming it didn't matter. Any incoming MMS were simply discarded by
the system and all I would get were the silent SMS messages that ping my
phone to check the MMS server, but nothing was held to be retrieved.
If you are on VZW (pre or post paid) and having this problem, ask support
to check the "Mobile Type" and ensure its not set to 1X.
On Feb 25, 2014 5:25 AM, "Verizon Wireless Customer Support" <

6500-VSS and NEXUS 56XX vPC interoperability

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