Connecting 4 Nexus 2000 with Nexus 7000

Hi ,
I have two N7K-F248XP-25 going to be installed in one Nexus 7009 and I have 4 N2K-C2248TP-1GE (48x100/1000-T+4x10GE) .
In simple way, I have two F2 line cards within one N7K and 4 N2Ks. The N7K will be used as a parent switch and it has NX-OS version 6.0
So I want to connect the 4 N2K to the two F2 line cards in a redundant fasion, can some one tell me the best practice of how to connect those N2Ks?
I have read somewhere that I can only use two ports from each 4 shared ports but I am not sure if this is true. I will appreciate any input or a link.
Thanks

That was Awesome link! Thanks indeed.
So can you please confirm if I am following the F2 + FEX rule
Again, I have only one Nexus 7009 and 4 x N2K , so I have two F2 cards on the Nexust 7009. Here is my connectivity plan:
1st N2K to port 1 on the first F2
1st N2K to port 1 on the second F2
2nd N2K to port 2 on the first F2
2nd N2K to port 2 on the second F2
3rd N2K to port 3 on the first F2
3rd N2K to port 3 on the second F2
4rth N2K to port 4 on the first F2
4rth N2K to port 4 on the second F2
So eventually , I am planning to use one group (4 ports) on each F2 card for all the connectivity to those N2K Switches.
Also, I will have a total of 4 port channels .. right ? 1 Port channel for each N2K
I will appreciate your feedback!

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Hi guys,
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Dell Servers with Nexus 7000 + Nexus 2000 extenders

<< Original post by smunzani. Answered by Robert. Moving from Document section to Discussions>>
Team,
I would like to use some of the existing Dell Servers for new network design of Nexus 7000 + Nexus 2000 extenders. What are my options for FEC to the hosts? All references of M81KR I found on CCO are related to UCS product only.
What's best option for following setup?
N7K(Aggregation Layer) -- N2K(Extenders) -- Dell servers
Need 10G to the servers due to dense population of the VMs. The customer is not up for dumping recently purchased dell boxes in favor of UCS. Customer VMware license is Enterprise Edition.
Thanks in advance.

To answer your question, the M81KR-VIC is a Mezz card for UCS blades only. For Cisco rack there is a PCIe version which is called the P81. These are both made for Cisco servers only due to the integration with server management and virtual interface functionality.
http://www.cisco.com/en/US/prod/collateral/ps10265/ps10493/data_sheet_c78-558230.html
More information on it here:
Regards,
Robert

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.
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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, 2000, FCOE and Fabric Path

Hello,
I have a couple of design questions that I am hoping some of you can help me with.
I am working on a Dual DC Upgrade. It is pretty standard design, customer requires a L2 extension between the DC for Vmotion etc. Customer would like to leverage certain features of the Nexus product suite, including:
Trust Sec
VDC
VPC
High Bandwidth Scalability
Unified I/O
As always cost is a major issue and consolidation is encouraged where possible. I have worked on a couple of Nexus designs in the past and have levergaed the 7000, 5000, 2000 and 1000 in the DC.
The feedback that I am getting back from Customer seems to be mirrored in Cisco's technology roadmap. This relates specifically to the features supported in the Nexus 7000 and Nexus 5000.
Many large enterprise Customers ask the question of why they need to have the 7000 and 5000 in their topologies as many of the features they need are supported in both platforms and their environments will never scale to meet such a modular, tiered design.
I have a few specific questions that I am hoping can be answered:
The Nexus 7000 only supports the 2000 on the M series I/O Modules; can FCOE be implemented on a 2000 connected to a 7000 using the M series I/O Module?
Is the F Series I/O Module the only I/O Module that supports FCOE?
Are there any plans to introduce the native FC support on the Nexus 7000?
Are there any plans to introduce full fabric support (230 Gbps) to the M series I/O module?
Are there any plans to introduce Fabric path to the M series I/O module?
Are there any plans to introduce L3 support to the F series I/O Module?
Is the entire 2000 series allocated to a single VDC or can individual 2000 series ports be allocated to a VDC?
Is Trust Sec only support on multi hop DCI links when using the ASR on EoMPLS pwire?
Are there any plans to inroduce Trust Sec and VDC to the Nexus 5500?
Thanks,
Colm

Hello Allan
The only IO card which cannot co-exist with other cards in the same VDC is F2 due to specific hardware realisation.
All other cards can be mixed.
Regarding the Fabric versions - Fabric-2 gives much bigger throughoutput in comparing with Fabric-1
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Fab2 modules won't give any advantages to M1/F1 modules.
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/data_sheet_c78-685394.html
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/prodcut_bulletin_c25-688075.html
HTH,
Alex

Fex 2000 connecting to nexus 7k/5k

Hello All,
We are connecting one fex 2000 to two nexus 5k. I have prepared a simple configuration after consulting the various cisco pages on this.
On first nexus 5k:-
int Po100
des FEX-2232-1
vpc 100
switchport mode fex-fabric
fex associa 100
no shut
int eth1/1
des FEX-2232-1
switch mode fex-fabr
fex associ 100
channe-gr 100
no shut
================
On second nexus 5k:-
int Po100
des FEX-2232-1
vpc 100
switchport mode fex-fabric
fex associa 100
no shut
int eth1/1
des FEX-2232-1
switch mode fex-fabr
fex associ 100
channe-gr 100
no shut
Is the above configuration correct?
The other doubt is; when configuring is it required to create the Po100 first before applying the channel-group command on the physical interfaces?
Or can the channel-group be directly applied to physical interface ( without the Po being created )?
Appreciate help on this please. Thanks in advance.

suthomas1,
The config is correct. I'm using the same config here so stable and resilient.
No, its not required to create the po100 before applying the channel-group command on the phy-int.
Be careful with bpdu in fex access ports.
Reagards,
Gus Magno

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 ?
Thanks

Hi 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

Connecting Cisco ASA TenGig to Nexus 7000

I am attempting to connect an ASA 5585 TenGig to a Nexus 7000 F2 TenGig port.
I am seeing the error message Transceiver validation failed when I insert the SFP into the port. I know that the error is removed when I enter the command switchport mode fex-fabric, and have tried the configuration, but am unable to get the link to come up.at either end. I am also aware that LACP is not supported when switchport mode fex-fabric is configured.
ASA is in multiple context mode with portchannel interfaces allocated to the relevant ASA context. Anyone know if I am overlooking something? Anyone run into this issue before?
Nexus 7000:
Eth1/1 1 eth access down Transceiver validation fa auto(D) 2
Eth1/2 1 eth access down Transceiver validation fa auto(D) 2
interface Ethernet1/1
switchport mode trunk
switchport trunk allowed vlan 1-10
channel-group 2 mode active
no shutdown
interface Ethernet1/2
switchport mode trunk
switchport trunk allowed vlan 2-10
channel-group 2 mode active
no shutdown
interface port-channel2
switchport mode trunk
switchport trunk allowed vlan 2-10
ASA5585:
interface TenGigabitEthernet0/6
channel-group 2 mode active
interface TenGigabitEthernet0/7
channel-group 2 mode active
interface Port-channel2
interface Port-channel2.2
vlan 2
interface Port-channel2.3
vlan 3
context inside
allocate-interface Port-channel2.1
allocate-interface Port-channel2.2
config-url disk0:/inside.cfg

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.

Broadcom LiveLink : Receiving MAC flaps with Cisco Nexus 7000

We are migrating from using two Nortel 8600's running VRRP at the distribution to Cisco Nexus 7K's using HSRP. So we have a server connected to two 3750G switches which then connect to the Nexi (previously the 8600's). As soon as we connected the 3750's to the Nexus and moved the gateway to Nexus, LiveLink forces all the servers to alternate traffic between NIC1 and NIC2.
Since LiveLink is a teaming application, it uses virtual mac for nic1 and nic2, but the virtual mac associated with the IP address moves to the active link.
LiveLink is used to check the availability of the gateway by polling the gateway out of each interface using an ARP request.
The problem does not exhibit itself in our Cisco VSS environment, and with Nortel's VRRP. I tried running VRRP on the Nexus but no joy.
Anyone know of a bug that could cause this issue?

Unfortunately we have LiveLink enabled on most of our Windows servers in our data centers. One of my colleagues sent me this bug issue. I'm not sure if this is the cause, but it's worth trying. We will update the NxOs (currently on 5.1.1) next week and see if that fixes the problem.
•CSCtl85080
Symptom: Incomplete Address Resolution Protocol (ARP) entries are observed on a Cisco Nexus 7000 Series switch, along with partial packet loss and a memory leak.
Conditions: This symptom might be seen when ARP packets have a nonstandard size (that is, greater than 64 bytes).
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Virtualized Lab Infrastructure - 3560G connecting to a Nexus 7000 - Help!

Hi all,
I've been struggling with the configuration for my small environment for a week or so now, and being a Cisco beginner, I'm worried about going down the wrong path, so I'm hoping someone on here would be able to help with my lab configuration.
As you can see from the graphic, I have been allocated VLANs 16-22 for my use, on the Nexus 7000. There are lots of other VLANs in use on the Nexus, by other groups, most of which are routable between one another. VLAN 99 is used for switch management, and VLAN 11, is where the Domain Controller, DHCP and Windows Deployment Server reside for the lab domain. Servers across different VLANs use this DC/DHCP/WDS set of servers. These VLANS route out to the internet successfully.
I have been allocated eth 3/26 on the Nexus, as my uplink connection to my own ToR 3560G. All of my servers, of which there are around 8 in total, are connected to the 3560. I have enabled IP routing on the 3560, and created VLANs 18-22, providing an IP on each. This config has been assigned to all 48 gigabit ports on the 3560 (using the commands in the graphic), and each Windows Server 2012 R2 Hyper-V host connects to the 3560 via 4 x 1GbE connections. On each Hyper-V host, the 4 x 1GbE ports are teamed, and a Hyper-V vSwitch is bound to that team. I then assign the VLAN ID at the vNIC level.
Routing between the VLANs is currently working fine - As a test, i can put 2 of the servers on different VLANs, each with their respective VLAN default gateway, and they can ping between one another.
My challenge is, I'm not quite sure what i need to do for the following:
1) How should I configure the uplink gi 0/52 on the 3560 to enable my VLANs to reach the internet?
2) How should I configure eth 3/26 on the Nexus?
3) I need to ensure that the 3560 is also on the management VLAN 99 so it can be managed successfully.
4) I do not want to route to VLAN 11, as i intend to have my own domain (DC/DNS/DHCP/WDS)
Any help or guidance you can provide would be much appreciated!
Thanks!
Matt

Hi again Jon,
OK, been battling with it a little more.
Here's the config for the 3560:
Current configuration : 11643 bytes
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname CSP_DX_Cluster
no aaa new-model
vtp mode transparent
ip subnet-zero
ip routing
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
vlan internal allocation policy ascending
vlan 16,18-23,99
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk native vlan 18
switchport trunk allowed vlan 18-22
switchport mode trunk
spanning-tree portfast trunk
<same through interface GigabitEthernet0/48>
interface GigabitEthernet0/52
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 16,99
switchport mode trunk
interface Vlan1
no ip address
interface Vlan16
ip address 10.0.6.2 255.255.255.252
interface Vlan18
ip address 10.0.8.1 255.255.255.0
interface Vlan19
ip address 10.0.9.1 255.255.255.0
interface Vlan20
ip address 10.0.12.1 255.255.255.0
interface Vlan21
no ip address
interface Vlan22
ip address 10.0.14.1 255.255.255.0
interface Vlan99
ip address 10.0.99.87 255.255.255.0
ip classless
ip route 0.0.0.0 0.0.0.0 10.0.6.1
ip http server
control-plane
l
end
At the Nexus end, the port connecting to the 3560 is configured as:
interface Ethernet3/26
description DX_3560_uplink
switchport
switchport mode trunk
switchport trunk allowed vlan 16,99
no shutdown
Now, the problem I'm currently having, is that on the 3560, things route fine, between VLANs. However, from on a server within one of the VLANs, say, 18, trying to ping the default gateway of the 3560 fails. I can ping 10.0.6.2 which is the 3560-end of VLAN 16, but i can't get over to 10.0.6.1 and beyond. I suspect, it's relating to what you said about "the only thing missing is you also need routes on the Nexus switch for the IP subnets on your 3560 and the next hop IP would be 10.0.6.2 ie the vlan 16 SVI IP on the 3560"
I suspect that, in layman's (my terms!) terms, the Nexus simply doesn't know about the networks 10.0.8.1 (VLAN 18), 10.0.9.1 (VLAN 19) and so on.
So, i need routes on my Nexus to fix this. The problem is, I'm not quite sure what that looks like.
Would it be:
ip route 10.0.8.0 255.255.255.0 10.0.6.2
ip route 10.0.9.0 255.255.255.0 10.0.6.2 and so on?
To give a bit of history, prior to me creating VLANs 18-22 on the 3560, all VLANs originally existing on the Nexus. Everything routed fine out to the internet, for all of the VLANs (with the same subnet settings that i have configured, i.e. 10.0.8.x for VLAN 18 etc), so i'm presuming once I get the Nexus to understand that the IP subnets live on the 3560, traffic should flow successfully to the internet.
Should.... :-)

Connecting the nexus 5500 with multiple vsans

Hi,
it's my first experience in the fibre channel world and i have a few doubts about the best way to connect the nexus 5500 to a EMC storage.
This is my scenario
this is my configuration:
vsan database
vsan 2
vsan 2 interface fc 1/1
vsan 3
vsan 3 interface fc 1/2
interface fc1/1
switchport mode f
no shut
interface fc1/2
switchport mode f
no shut
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Fred

Hello Fred,
All interfaces must be in the same vsan for them to see each other
vsan database
vsan 2 interface fc1/1, fc1/2, fc1/3
exit
Then you can zone each separately
example:
zone name host1 vsan 2
member pwwn 11:11:11:11:11:11:11:11    (host1 pwwn)
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zone name host2 vsan 2
member pwwn 22:22:22:22:22:22:22:22    (host2 pwwn)
member pwwn 33:33:33:33:33:33:33:33    (VNX)
zoneset name Zoneset1 vsan 2
mem host1
mem host2
zoneset activate name Zoneset1 vsan 2
Thanks

Connecting two Nexus switches with link

Hi,
I would like to connect two nexus switches with a link. Like one c5020 and one c5548p. How do i need to configure the ports at both the switches which will be joined with a fiber cable.
For MDS switches such links becomes E-port and fabric is merged. Not sure what happenes at the Nexus swictches. Any input will be appreciated.
Thanks,

Do you have fc modules in each nexus? If so, they act much like the MDS 9148. All ports should be default auto speed and auto switchport mode. Insert fc-sfp's and a regular multimode fc cable between them. Default mode is fc switch.
If that doesn't work, configure the mode on each port as E.
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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.

Connecting 4 Nexus 2000 with Nexus 7000

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