Cisco Switching/Routing :: Datacenter Design With 2 Nexus 5K And 4 Nexus 2K?

Nov 13, 2012

we are planning a Nexus datacenter project with this layout:Our experiences with Nexus switches are not so large until now and the manuals are very extensive.Both N5K´s should be connected directly with all 4 N2K switches. I did not find a layout like this in the manuals. Only a design,where only 2 N2K are connected to one N5K, with this fex config:Now I´m not sure if it is right to make a config like this with the same slots and fex´s or with different slots and fex´s.

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Cisco Switching/Routing :: 6506 Benefits Of Adding Nexus Switch To Datacenter

Sep 7, 2012

We have  two catalyst 6506 switches  with 10 gb u plinks  and around 120 edge switches cat 3750-x switches. Still the module on the  core wheere servers are connected  is 1000mbps port.Now if we induct a nexus switch to the datacenter what kinds of benefits we can reap In a virtulised environment as well as real  environment?following are the some of the queries.Can we reduce the number of edge switches? ( by virtual environment), Inter operabaility between cat ios and nexus ios, how this will affect the environement,What will be the over all benefits ?, What are the cons of this induction ?

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Cisco Switching/Routing :: Nexus 5548UP To 2248 Design

Aug 10, 2012

This past networkers I was at the Cisco booth discussing how the 2248 can connect to the 5548 and have server connectivity.  It was told to me that now, as of a fairly recent NX-OS release, you can have the 2248 going dual-homed to both 5548 via VPC and then have a server connected to both 2248 and be in active-active mode.  Is this correct?
 
When we first deployed our 5548 and 2248 we had to put the 2248 in a straight pin mode, where it only had connections to one 5548 and then the server would dual connect to the 2248's and be in active-active mode.  I was told that this changed with an NX-OS release however documentation still seems to be fragmented on what exactly is the case. 

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Cisco Switching/Routing :: M1000E - Small Datacenter Design

Apr 19, 2012

Small datacenter design.  My requirements and setup will be as follows Dell PowerEdge M1000E Blade Chassis (initially one full chassis)Dell Powerconnect 10GbE Blade SwitchesDell Compellent Storage Array 10Gb iSCSI with redundant controllersDell Powerconnect 7024 dedicated external storage Virtual host blade servers 2 x Cisco ASA for firewall (5525-X or similar in active-active configuration)2 x redundant routers or switches as gateway to public internet I am looking to be able to segregate customers (approximately 100) into seperate VLANs at the access layer and route them up to the Cisco ASA firewalls using Dot1Q trunking for segregation.  The Cisco ASA's will perform NAT functionality and route to the redundant gateways.  I then need to police each customers traffic at the gateway to limit bandwidth and perform specific traffic marking along with simply routing out to the internet.

 Budget is somewhat restrictive so I am looking for the most "cost effective" devices I can use at the gateway to perform the traffic policing/marking/routing for each customer. 

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Cisco Switching/Routing :: Nexus 5596UP Dual-sided VPC Design With Dual Connected

Feb 19, 2012

I would like to make a design with 4 Nexus 5596UP. 2 of them equipped with Layer 3 Expansion Module  so they can serve as core layer and the other 2 Nexus used as Layer 2 for aggregation server layer.The 2 Nexus in the core layer will run HSRP and will peer with ISP via BGP for Internet connection The 2 Nexus in the aggregation layer will be configured as layer 2 device and have FEX and switches connected to them.What I am ensure of is how the vpc and port-channel configuration should look like between the 4 nexus. What I was thinking is to run vpc between the 2 Nexus in the aggregation layer and between the 2 Nexus in the core layer. Than I was thinking of connecting each Nexus in the aggragtion layer to both Nexus in the core layer using port-channel and vice-versa.

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Cisco Switching/Routing :: Packet Discard On Nexus 5020 Link To Nexus 5K

Feb 23, 2011

We are facing issue of continous packet discards On nexus4001L link (int po2) to Nexus5020 switch. Nexus4001L is installed in IBM blade center server and we have FCOE enabled in this setup. [code]

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Cisco Switching/Routing :: Nexus 7000 With Fabric Extenders Nexus 2000?

Mar 15, 2013

I have been tasked to replace the existing Cat 6500 and 3750 switches by Nexus 7000 and Nexus 2000.I was told initially my boss plans to get 2 x Nexus 7000 and then eventually blow up to 4 x Nexus 7000s.For Nexus, is there a list of tasks / points that i need to consider for building the initial design?
 
Can i just link the Nexus 7000 like the following?
 
N7k-A    =========   N7k-B
|                                   |           
lots of N2ks               lots of N2ks

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Cisco Switching/Routing :: Nexus FEX Transceivers SNMP MIB Nexus 5000

Dec 22, 2011

Struggle to find the SNMP MIBS of the Nexus 5000 FEX tranceivers.

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Cisco Switching/Routing :: 10G Ports On Nexus 7K?

Jul 2, 2012

I''ve trying to bring up ports on a N7K-M108X2-12L card using X2-10GB-SR modules.
 
All ports are in a VDC and configured to accept the M1 card:
 
vdc_id  vdc_name                          state               mac                 type        lc
------  --------                          -----               ----------          ---------   ------
2       cam-cor-csw-sfy-01                active              64:a0:e7:43:f0:c2   Ethernet    m1 f1 m1xl

[Code]....

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Cisco Switching/Routing :: 7010 - How To Add Two Nexus 5K In DC

Feb 18, 2013

This is regarding Nexus core switch 7010. We are already running two nexus 7K with ten Nexus 5k. Currently we are going to add two new Nexus 5k in our DC. In the 7K we already running two VDC's.

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Cisco Switching/Routing :: Nexus 5k High Fan RPM

Jun 8, 2013

The fans 1 & 2 in Module 1 on the Nexus5K are still experiencing the very high RPM and speed issue.
 
I have replaced the fan from another operational Nexus5K, and the fans are fine in the other Nexus. The replacement fans also have the same issues, so it is not a fan hardware issue.
 
There are no threshold alarms. the only log entry that is related to this is as follows:
 
%NOHMS-2-NOHMS_ENV_ERR_FAN_SPEED: System minor alarm in fan tray 1: fan speed is out of range on fan 1. 7950 to 12500 rpm expected. I have provided the output for both the fan detail and the temperature.
 
N5K-01# sh environment fan detail
Fan: --------------------------------------------------- Module  Fan  Airflow        Speed(%)  Speed(RPM)              Direction --------------------------------------------------- 1       1   

[Code].....

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Cisco Switching/Routing :: Per-VLAN QoS On Nexus 5K?

Feb 22, 2012

I was reading a QoS walkthrough earlier to try to solve my problem and I noticed that in IOS, you can specify "match vlan" in a class map.  This is not available in NX-OS. I'm not doing any routing on the 5K so I cannot match on ACL, and port where traffic is received is a trunk sharing other types of traffic I'd like to classify elsewise.
 
How can I match traffic on a per-VLAN basis?

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Cisco Switching/Routing :: How To Configure Nexus 5K

Oct 26, 2011

How to configure a nexus 5K?

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Cisco Switching/Routing :: Nexus 7k - Fex Not Loading

Mar 14, 2013

Just upgraded Nexus 7k from 5.2.1 to 5.2.7 (just system and kickstart image and NOT epld image). but after upgrading the one of the fex(n2k) dont seem to come online (this nexus 7k has two n2k and one of them came online and working fine)                  
 
[code]....

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Cisco Switching/Routing :: QOS By VLAN On Nexus 5k?

Aug 14, 2012

I have a couple of Nexus 5ks that I want to put QOS on for the servers running behind it but also have voice running across it.  Voice doesn't play well with jumbo frames so I'd like to put QOS only on the voice vlan. 

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Cisco Switching/Routing :: Vlan On Nexus 7K Is Down

Apr 17, 2013

I am working in my lab and I was adding a new L2/3 vlan

vlan 555
name test
 
int vlan 555
ip address 1.1.1.1/24
no shut
 
I have also ensured that this vlan is added to the port channel going to my Nexus5K's.  I added the vlan to the 5K's and also ensured that vlan 555 is traversing the peer link.  all is good there.  I have also placed a device on a interface on the 2k as a access switchport on vlan 555
 
Here is my problem, the L3 interface will NOT come up on the 7K
 
LAB-DSW01# sh ip int brie
IP Interface Status for VRF "default"(1)
Interface            IP Address      Interface Status
Vlan555             1.1.1.1     protocol-down/link-down/admin-up  
 
I have gone throug just about everything I can think of and I am still unable to get this L3 interface to come up.  I have other L3 interfaces on this device that are configured exactly the sameway without any issue at all.  All the existing interfaces are working properly, it's jut this new interface that I am trying to add.
 
I am running version 6.0.1 on the 7K and 5.2.1.N1.4 on the 5K.

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Cisco Switching/Routing :: Nexus 7010 / VSS - Does It Support Virtual Switching?

Apr 9, 2010

Does the nexus 7010 support virtual switching yet?  All of the posts I have found from about a year ago say that it is going to be supported, but there were no dates listed.  I heard the same thing from Cisco a while back, but haven't followed up with it.If it is supported finally are there any configuration guides available for it?

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Cisco Switching/Routing :: Facebook Forum Data Center Switching With Nexus 5000

Oct 8, 2012

Lucien is a customer support engineer at the Cisco Technical Assistance Center. He currently works in the data center switching team supporting customers on the Cisco Nexus 5000 and 2000. He was previously a technical leader within the network management team. Lucien holds a bachelor's degree in general engineering and a master's degree in  computer science from Ecole des Mines d'Ales. He also holds the  following certifications: CCIE #19945 in Routing and Switching, CCDP, DCNIS, and VCP #66183

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Cisco Switching/Routing :: FCoE Support On Nexus 7k

Feb 24, 2013

Its required that all ports on nexus 7k should be user configurable as either 1G/10G/FcoE. Which module do i need in this case ?

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Cisco Switching/Routing :: Would Nexus 5K Can Have 2 Separate Connections To Each VDC

Jan 23, 2012

We are thinking of following classic design, would Nexus 5K can have 2 seperate connections to each VDC? Nexus 7K w/ different VDC (Internal / DMZ ) Can Nexus 5K have a VPC connection to Nexus 7K to Internal VDC as well as DMZ VDC, and seperate traffic?

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Cisco Switching/Routing :: Nexus 5010 With 1G And 10G Uplinks In VPC?

Aug 12, 2012

I currenty have a Nexus 5010 connected to a core 3750X switch stack  in a VPC trunk using 2  1Gbps links.  I want to move this link to 2  10Gbps links without losing connectivity.  So I want remove a 1G link  and move it to 10G and then once that's up move the other 1G link to 10G  hopefully without losing connectivity.  So the question is, can I have a  1G and 10G link between the Nexus and 3750s in the same virtual port  channel without causing problems?

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Cisco Switching/Routing :: Setting Up NTP On New Nexus 3064s

Mar 11, 2012

I'm having a little trouble setting up NTP on our new Nexus 3064s. We are using a local Meinberg M300 as our server and the Nexus 3064 as a client. Before I submitted a TAC I was wondering if the community would mind double checking what I have. One major issue I've come across is that the Nexus 3064 will only take a 8 character NTP passphrase. We normally use a 32 char MD5 string. I setup a new 8 char passphrase on our Meinberg M300. I am not using fabric extenders or distribution to other Nexuses. I am using an interface vlan as our management interface per our current network setup. I am using a VRF. We use some public IPs so all IPs are xxx'ed out. [code]

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Cisco Switching/Routing :: Nexus 7K Downgrade Failure

Feb 2, 2012

After trying to downgrade a Nexus 7K from 5.2.1 to  5.1.5 by updating the boot & kickstart boot statements and reloading, I'm now stuck in an endless cycle of reloading. See below:

Is there a break sequence which will allow me to modify the boot statement back to the original via ROMMON or something similar?

[code]....

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Cisco Switching/Routing :: Configure Sub Interface For Nexus 7k?

Jan 11, 2013

how do we configure sub interface for nexus 7k?do we have to issue ma-address command under physical interface and than configure subinterface? if yes than what do we have to type the mac address for "mac-address" command?I can doing and than configure subinterface but the interface/subinterface didn't come up. do we have to bounce it couple times to bringe it up?

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Cisco Switching/Routing :: Connecting Nexus 7010 VDC With VPC

Jan 29, 2013

In our LAN network design, we have two Nexus 7010 switches on the core connected via vPC. Then LAN access switches are directly connected to the Core Nexus switches  via  regular port channels on the 3750's  and vPC on Nexus. The core Nexus switches will be linked to an existing LAN network and the applications will be progressively migrated from the old to the new network.In this scenario, three VDCs are planned to be configured on the Nexus -  One for the Interconnect (and WAN at a later stage), one for the LAN/local services and one for the building facilities/local services.

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Cisco Switching/Routing :: Setup IP On Nexus 5500?

Apr 19, 2013

How to you setup ip routing on a Nexus 5500 I want to do vlan routing between an Nexus 5500 and Catalyst 3750. Nothing clever just have the 2 switches talk and vlans route between the two.

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Cisco Switching/Routing :: Default Routes In Nexus 5k

Apr 29, 2013

I have a pair of N5K's, down stream from them are from Fabric Interconnects and a UCS chassis.  Upstream is a stack of 3750's then ASA5510's. 
 
I am trying to backup the config to our TFTP server and I am getting 'no route to host'.. I tried to add a route, and found that N5K uses VRF's for routing?? .. After some looking I see there are two base VRF's 'management' and 'default'.. the management VRF has a default gateway entry and a single interface member (mgmt0).. when I look at the default VRF .. there are no interface members or routing entries.. Ok, I can handle that just add some interfaces and add a default gateway.  Then I get lost:
 
I'm able to access the UCS manager..... so how the heck is that even possible if there's no gateway defined anywhere (or maybe I'm missing something?).  My theory was: add all other ports but mgmt0 to the default VRF, and have the default gateway point out of the uplinks (a vPC).. but wasn't sure how that would affect anything and mainly just wanted to know how I was able to access the UCS manager in light of the fact that there is no default gateway anywhere that I could see...

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Cisco Switching/Routing :: Nexus 5020 And GLC-T Compatibility

May 27, 2012

The below nexus 5020 nx-os version and type/revision of my GLC-T is compatible with each other? I noticed also the "Transceiver calibration is invalid"  when i do show int e1/8 transceiver details , what does it mean?

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Cisco Switching/Routing :: Upgrade Nexus 7009 6.0.1 To 6.1.2?

Feb 3, 2013

I need to upgrade my core switches at one of our locations (two 7009s with dual sups) from 6.0.1 to 6.1.2.  After looking through the release notes it appears that this will be a disruptive upgrade?how long should I expect for the disruption?  Are we talking a 7009 boot cycle (10 - 15 minutes) or something longer?How many disruptions can I expect?  I suspect 1 per chassis during the failover to the standby but I'd like to validate.Is there any compelling reason to upgrade the EPDL?  From what I can see, again from the release notes, this is only necessary with F2 cards if I were to upgrade to Sup2s . I'm in a healthcare environment and this upgrade will be affecting one of our major campuses so the more info I can get to the managers the more accepting they will be for the disruptions.

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Cisco Switching/Routing :: Nexus 7000 Vrf Not Enabled?

Dec 9, 2012

Should I install any special license to enable vrf within Nexus 7000 VDC? I observed that vrf routing instance is not enabled in the VDC.

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Cisco Switching/Routing :: Nexus 7K No Switchport Command Available?

Mar 22, 2013

I created new VDCs.  Since I have done so, there is not switchport command under the interface configuration.
 
The interesting this is that it is available on the admin VDC, but not the new VDC I created.  I cannot create a peer VPC Peer link between my 2 Nexus switches.  I did allocate ports to the new VDC and I did verify the enabled feature are the same.
 
why the switchport command is not available?

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Cisco Switching/Routing :: Nexus 5596 UP L3 OSPF

Jan 3, 2013

I have 2 Nexus 5596UPs with a layer 3 cards that are exhibiting some very peculiar behavior.  The systems are running 5.1(3)N1(1).I have configured 2 VRF contexts each running their own OSPF process.  There is a static gateway of last resort configured on each VRF, which is to an upstream pair of 5585X's in Active/Active.  Each OSPF process has the "default-information originate always" command configured, however, backbone neighbors are not recieving a gateway of last resort from the 5596UPs.  The applicable configurations are show below.  All other routing information is passing correctly between devices in the network.  This network is not production, it is a proof of concept for a larger implementation.

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Cisco Switching/Routing :: Nexus 7K Is Not Load Balancing

Aug 5, 2012

We have Nexus 7K on production. 7K chasis is not load balancing with non-cisco devices with etherchannel or LACP..I have tried all load balancing algorithms but in vain. [code]

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